CN112986883B - Effectiveness testing system and method for transformer winding deformation detection device - Google Patents
Effectiveness testing system and method for transformer winding deformation detection device Download PDFInfo
- Publication number
- CN112986883B CN112986883B CN202110188610.9A CN202110188610A CN112986883B CN 112986883 B CN112986883 B CN 112986883B CN 202110188610 A CN202110188610 A CN 202110188610A CN 112986883 B CN112986883 B CN 112986883B
- Authority
- CN
- China
- Prior art keywords
- winding
- detection device
- winding deformation
- deformation detection
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 title claims abstract description 253
- 238000001514 detection method Methods 0.000 title claims abstract description 113
- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 10
- 230000001133 acceleration Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 239000011162 core material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention relates to a transformer winding deformation detection device effectiveness test system and a method, wherein the system comprises a deformation generator, a winding deformation detection device clamp and a power source which are connected with the deformation generator, a microprocessor unit is connected with the deformation generator through the power source, the power source generates a power supply, and a loop is formed by a load and a winding of the deformation generator; the deformation generator comprises silicon steel, wherein windings are arranged at two ends of the silicon steel to respectively form a single-winding deformation generator and a multi-winding deformation generator; and the microprocessor unit simulates various situations, compares the same winding value with the original data and the historical data, and if the winding deformation detection device tests that the relative change of the winding parameters of the system is not more than +/-2%, the effectiveness of the winding deformation detection device meets the requirement. The invention can ensure the credibility of the transformer winding deformation detection device on site for detecting the transformer winding to the greatest extent, and simultaneously improves the working efficiency and quality of power supply operation and maintenance personnel.
Description
Technical Field
The invention relates to the field of testing of power instruments, in particular to a system and a method for testing effectiveness of a transformer winding deformation detection device.
Background
The safe operation and maintenance of the power system are the result of the combined action of various devices, and the power transformer belongs to the class with high value, large action and wide involvement, so the power transformer has great significance for the research of ensuring the safe operation of the power transformer. From the historical statistics regarding transformer accidents, it can be seen that the transformer winding is one of the most faulty components. From the perspective of a disassembled view of the transformer, the transformer faults caused by winding deformation account for the vast majority. In addition, the failure positions and the defect conditions of the transformer are analyzed according to the state statistics, the coil and the lead outgoing line are the most main failure occurrence parts, and the defect parts of the transformer are mainly shown in an iron core, a coil, a lead, a sleeve and a tap changer.
The transformer winding faults are mainly unrecoverable changes of a mechanical structure of the winding under the action of electromagnetic force or mechanical force, and commonly include winding looseness, warping, bulging, dislocation and the like. Because the internal mechanical and electrical structures of the transformer are complex, once the mechanical structure of the winding is changed, the characteristic parameters which are changed along with the change of the mechanical structure of the winding are more, therefore, various transformer winding state monitoring schemes are developed aiming at the monitoring of different characteristic quantities, for example, a transformer winding deformation detection device is developed in the prior art. When the transformer fails, the power supply operation and maintenance personnel bring the transformer winding deformation detection device to the site to test the transformer winding, and the characteristics of the transformer winding are not found by comparing with the original results, and at the moment, the power supply operation and maintenance personnel can not determine whether the transformer winding is deformed or not or the transformer winding deformation detection device cannot detect the deformation, so that the research on a method for testing the effectiveness of the transformer winding deformation detection device is urgently needed, a corresponding test platform is researched, the transformer winding deformation detection device brought to the site is ensured to be effective, and the functions of the transformer winding deformation detection device can be exerted.
Disclosure of Invention
In order to solve the effectiveness problem of the transformer winding deformation detection device, the invention aims to provide a simple, easy-to-use and high-reliability effectiveness test system and method of the transformer winding deformation detection device, and in order to achieve the purpose, the invention has the following beneficial effects:
a transformer winding deformation detection device effectiveness test system comprises a deformation generator, a winding deformation detection device clamp and a power source, wherein the winding deformation detection device clamp and the power source are connected with the deformation generator;
the deformation generator comprises silicon steel, wherein windings are arranged at two ends of the silicon steel to respectively form a single-winding deformation generator and a multi-winding deformation generator;
and the microprocessor unit simulates various situations, compares the same winding value with the original data and the historical data, and if the winding deformation detection device tests that the relative change of the winding parameters of the system is not more than +/-2%, the effectiveness of the winding deformation detection device meets the requirement.
Further, the single winding deformation generator is including locating the winding lifting block on the silicon steel, go up the spacing block, spacing block and lifting rope down, a circle of winding is pasted on the winding lifting block, go up the spacing block and arrange respectively in the left and right both sides on single winding deformation generator upper portion, and leave certain the interrupted in the middle, through the manual lifting winding lifting block that promotes of lifting rope, the winding can produce deformation, loosen the winding lifting block, the winding is returned to original position because of the weight effect of winding lifting block, microprocessor unit warp upper limit display result through the single winding.
Furthermore, the single-winding deformation generator of the multi-winding deformation generator comprises a winding lifting block, an upper limiting block, a lower limiting block and a lifting rope, wherein the winding lifting block, the upper limiting block, the lower limiting block and the lifting rope are arranged on silicon steel, a plurality of turns of windings are attached to the winding lifting block of the multi-winding deformation generator, and the rest of the multi-winding deformation generator is identical to the single-winding deformation generator in structure.
Furthermore, 4 turns of windings are attached to a winding lifting block of the multi-winding deformation generator, and the deformation quantity of the single-winding deformation generator and the deformation quantity of the multi-winding deformation generator are set to be 3 cm.
Furthermore, a sealing box is arranged at one end of the silicon steel, a bayonet for installing a sensor of the winding deformation detection device is arranged in the sealing box, and the sealing box is used for simulating the installation of the sensor of the transformer winding deformation detection device.
Further, the microprocessor unit controls the power source to generate complex power output through RS232 communication, and the single-winding deformation condition and the multi-winding deformation condition are reflected through digital quantity input DI of the upper limit and the lower limit of the single winding and the multi-winding respectively.
Furthermore, voltage, current and vibration sensor signals required by the winding deformation detection device are acquired through clamping of the winding deformation detection device.
The invention also relates to a testing method for the effectiveness of the transformer winding deformation detection device, which comprises the following steps:
step (1) preparation of work before measurement
Clamping a transformer winding deformation detection device in a winding deformation detection device, sequentially installing vibration sensors at corresponding positions of a closed box, connecting a sensor signal output line to the transformer winding deformation detection device, and simultaneously connecting a voltage signal and a current signal to the transformer winding deformation detection device;
step (2) power-on detection of test platform
After the test platform is powered on, observing whether the communication between the microprocessor unit and the power source is normal; the transformer winding deformation detection device is connected to the vibration sensor to normally display an acceleration value, a voltage signal loop has no short circuit, a current signal loop has no open circuit, and the acceleration value can be normally displayed on the device; the power source is detected normally and has no short circuit; the microprocessor correctly reflects the states of the single-winding deformer and the multi-winding deformer;
step (3) controlling the power source to output a certain power supply scene
Step (4) manually simulating winding deformation, and detecting effectiveness by using a measuring device
Firstly, manually lifting a manual lifting rope of the single-winding deformation generator to an upper limit, observing a transformer winding deformation detection device, and recording a detection result;
manually loosening the lifting rope to return to the lower limit, observing the transformer winding deformation detection device, and recording the detection result;
switching to a multi-winding deformation generator, repeating the process, observing the transformer winding deformation detection device, and recording the detection result;
step (5) typical power supply scene coverage judgment
And (6) evaluating the effectiveness of the device.
Comparing the same winding value of the test platform with the original data and the historical data by the microprocessor unit, the relative change of the winding parameter of the platform tested by the winding deformation detection device is not more than +/-2 percent
And (7) finishing the test.
Further, a typical power supply scenario includes at least two of a normal output, a frequency deviation output, a voltage deviation output, a harmonic output, a voltage fluctuation and flicker output, a voltage sag output, and a complex output.
Further, the microprocessor unit judges whether the typical power supply scene is covered, and if not, returns to the step (3); if the coverage is achieved, the next step is directly carried out.
The principle of the invention is as follows:
the transformer winding deformation detection device is installed on a test platform, a sensor, voltage and current signals are connected, a power-on starting platform is electrified to complete self-checking, a power source is controlled by a microprocessor unit to generate a power supply scene, a single/double winding deformation generator is used for manually generating winding deformation, the effectiveness of the transformer winding deformation detection device is uniformly evaluated after the test is completed, the transformer winding deformation detection device can be put into practical production and application after the evaluation is qualified, and the transformer fault, the signal input abnormality and other reasons of the transformer winding deformation detection device need to be searched again when the evaluation is unqualified.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the microprocessor unit controls the power source to generate a power supply scene, the single/double winding deformation generator is used for manually generating winding deformation, the effectiveness of the transformer winding deformation detection device is uniformly evaluated after the test is finished, the transformer winding deformation detection device can be put into practical production and application after the evaluation is qualified, and the reasons of transformer fault, signal input abnormity and the like of the transformer winding deformation detection device are required to be searched again when the evaluation is unqualified. The whole is simple and easy to use, and is highly reliable.
(2) The invention can match the function test of the transformer winding deformation detection device, can simulate various complex power supply scenes of a power system at present, has strong applicability and flexibility, can evaluate the effectiveness of the transformer winding deformation detection device, can ensure the credibility of the transformer winding deformation detection device on site for detecting the transformer winding to the greatest extent, and simultaneously improves the working efficiency and quality of power supply operation and maintenance personnel, thereby greatly improving the effectiveness and flexibility of the whole test process of the transformer winding deformation detection device.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
As shown in fig. 1, the system for testing the effectiveness of the transformer winding deformation detection device in the present embodiment includes a deformation generator 1, a winding deformation detection device card 2 connected to the deformation generator 1, and a power source 4, wherein a microprocessor unit 3 is connected to the deformation generator 1 through the power source 4, the power source 4 generates a power supply, and a loop is formed by a load 5 and a winding of the deformation generator 1.
The deformation generator 1 comprises silicon steel 1.1, and windings are arranged at two ends of the silicon steel 1.1 to form a single-winding deformation generator 1.2 and a multi-winding deformation generator 1.3 respectively.
The single-winding deformation generator 1.2 comprises a winding lifting block 1.7, an upper limiting block 1.9, a lower limiting block 1.10 and a lifting rope 1.8 which are arranged on silicon steel 1.1, wherein a circle of winding is attached to the winding lifting block 1.7, the upper limiting block 1.9 is respectively arranged on the left side and the right side of the upper part of the single-winding deformation generator, a certain gap is reserved in the middle of the upper limiting block, the winding lifting block 1.7 is manually lifted through the lifting rope 1.8, the winding can deform, the winding lifting block 1.7 is loosened, the winding can return to the original position under the action of the weight of the winding lifting block, the gap is used for detecting that the winding lifting block reaches the upper limit of the single-winding deformation generator, and the microprocessor unit can display the upper limit DI through the single-winding deformation; the lower limiting block has the same structure and principle as the upper limiting block, is arranged differently and is arranged on the left side and the right side of the lower part of the single-winding deformation generator.
The single-winding deformation generator 1.2 of the multi-winding deformation generator comprises a winding lifting block 1.7, an upper limiting block 1.9, a lower limiting block 1.10 and a lifting rope 1.8 which are arranged on silicon steel 1.1, the structure and the principle of the single-winding deformation generator are the same as those of the single-winding deformation generator, only a plurality of turns of winding are pasted on the winding lifting block of the multi-winding deformation generator, and the number of the turns of the winding is 4 in the example. The deformation quantity of the single-winding deformation generator and the multi-winding deformation generator is set to be 3 cm.
Silicon steel 1.1 one end is located to the seal box 1.4, is equipped with the bayonet socket of 6 sensors of installation winding deformation detection device in the seal box 1.4, and seal box 1.4 one end is located to first sensor bayonet socket 1.5, and seal box 1.4 one end is located to sixth sensor bayonet socket 1.6, and seal box 1.4 is used for simulating the sensor installation of transformer winding deformation detection device. The 6 sensors are in contact with the transformer housing.
The load 5 is a common resistance type or impedance type load, the winding also presents impedance characteristics, and the power source generates power and flows through the load and the winding to form a loop.
The evaluation of the winding deformation detection device is as follows:
compared with the original data and the historical data, the winding deformation detection device tests that the relative change of the winding parameters of the platform is not more than +/-2% for the same winding value of the test platform by the microprocessor unit 3, and if the relative change is met, the effectiveness of the winding deformation detection device meets the requirement, and the winding deformation detection device is qualified and can be put into field application.
The microprocessor unit 3 controls the power source to generate complex power output through RS232 communication, and reflects the deformation conditions of the single winding and the multi-winding through digital quantity input DI of the upper limit and the lower limit of the single winding and the multi-winding respectively.
Winding deformation detection device screens 2 mainly used installation and block winding deformation detection device, simultaneously to winding deformation detection device required voltage, electric current, vibration sensor signal access to this screens, make things convenient for winding deformation detection device to insert, voltage signal and current signal all are in mutual-inductor secondary side output range, can not damage winding deformation detection device, as shown in figure 1.
In the embodiment, the vibration sensor adopts an American omega industrial grade accelerometer ACC786A, the sensor adopts top mounting and is characterized by a sealed 316L stainless steel shell, the sensor is suitable for severe environment and designed for industrial vibration measurement, and the sensitivity of the sensor is 100mV/g (under the conditions of +/-5 percent and 25 ℃); the acceleration range is 80g peak value; amplitude nonlinearity is 1%; the frequency response is +/-5% (3-5000 Hz), +/-10% (1-9000 Hz) and +/-3 dB (0.5-14000 Hz); the resonance frequency is 30 kHz; the lateral sensitivity is at most 5% axial.
The power source 4 adopts a PRE series programmable alternating current power supply of the Siann Aike Saibo, and is mainly characterized in that:
1) full power feedback, real bidirectional, AC/DC four-quadrant output function; 2) the harmonic wave extends to 100 times @50Hz/60Hz and 25 times @400 Hz; 3) the output voltage can be expanded to L-N/450Vac @40Hz-70Hz without adding a step-up transformer; 4) the output fundamental wave frequency is increased to 5000 Hz; 5) constant power curve output is realized, and high and low voltage gears are not required to be arranged; 6) alternating current, direct current, alternating current-direct current output modes; 7) single-phase, three-phase (three-phase linkage), split-phase output modes; 8) a programmable output impedance; 9) SCPI compatible RS-232, USB and Ethernet interfaces.
In this embodiment, the silicon steel and the winding are made of the same material as that of a common transformer, and a single-winding deformation generator and a multi-winding deformation generator are embedded in the silicon steel to respectively simulate single-winding deformation and multi-winding deformation.
The vibration of the transformer iron core is mainly caused by the mutual attraction among the silicon steel sheets under the action of the magnetostriction and the eddy current of the silicon steel sheets.
Assume a supply voltage of U s Sin ω t, the magnetic induction generated in the core according to the principle of electromagnetic induction can be expressed as:
in the formula (I), the compound is shown in the specification,
s is the core cross-sectional area, w is the angular velocity, and Ncore is the number of winding turns.
Because the magnetic flux density and the magnetic field intensity are in a linear relationship, the magnetic field intensity of the iron core is as follows:
in the formula, B s Is the saturation magnetic induction of the iron core, H c Is the coercive force.
Under the action of an external magnetic field, the micro deformation relation of the silicon steel sheet generated by magnetostriction satisfies the following conditions:
wherein epsilon is the axial magnetostriction rate of the silicon steel sheet, delta L is the axial maximum expansion and contraction of the silicon steel sheet, L is the original axial dimension of the silicon steel sheet, and epsilon s The saturation magnetostriction ratio of the silicon steel sheet.
By combining the above relational expressions, the maximum axial expansion and contraction amount of the iron core silicon steel sheet caused by magnetostriction is:
therefore, when the transformer is unloaded, the vibration acceleration of the iron core caused by the magnetostriction of the silicon steel sheets is obtained as follows:
as can be seen from equation (5), the vibration acceleration value is proportional to the square of the voltage under the condition that the conditions such as the core material and the operating temperature are not changed:
a c ∝u s 2 (6)
because the transformer iron core material has nonlinearity, the iron core vibration signal contains a large amount of higher harmonic components except a fundamental frequency component, and for the transformer iron core working under a power supply with the frequency of 50Hz, the components of 100Hz, 200Hz, 300Hz and 400Hz are obvious, and a transformer manufacturer needs to control the magnetostriction amount of silicon steel sheets by controlling the epsilon value of the silicon steel sheets in order to reduce the vibration of the transformer iron core.
As shown in fig. 2, the method for testing the effectiveness of the transformer winding deformation detection apparatus of the present embodiment includes the following steps:
and (1) preparing before measurement.
The transformer winding deformation detection device is clamped in the winding deformation detection device, the 6 vibration sensors are sequentially arranged at corresponding positions of the closed box, a sensor signal output line is connected into the transformer winding deformation detection device, and a voltage signal and a current signal are also connected into the transformer winding deformation detection device.
And (2) electrifying the test platform for detection.
After the test platform is powered on, observing whether the communication between the microprocessor unit and the power source is normal; the transformer winding deformation detection device is connected with 6 vibration sensors to normally display the acceleration value, a voltage signal loop has no short circuit, a current signal loop has no open circuit, and the voltage signal loop and the current signal loop can be normally displayed on the device; the power source is detected normally and has no short circuit; the microprocessor correctly reflects the state of the single-winding deformer and the multi-winding deformer.
And (3) controlling the power source to output a certain power supply scene.
And (4) manually simulating winding deformation, and detecting effectiveness by using a measuring device.
Firstly, a manual lifting rope of a single-winding deformation generator is lifted to an upper limit, a transformer winding deformation detection device is observed, and a detection result is recorded; and manually loosening the lifting rope to return to the lower limit, observing the transformer winding deformation detection device, and recording the detection result. And switching to a multi-winding deformation generator, repeating the process, observing the transformer winding deformation detection device, and recording the detection result.
And (5) judging the coverage of a typical power supply scene.
Typical power supply scenarios include normal output, frequency deviation output, voltage deviation output, harmonic output, voltage fluctuation and flicker output, voltage sag output, and complex output (superposition of at least 2 of the above cases). Judging whether the typical power supply scene is covered or not, and returning to the step (3) if the typical power supply scene is not covered; if the coverage is available, the next step is directly carried out.
And (6) evaluating the effectiveness of the device.
Compared with the original data and the historical data, the winding deformation detection device tests that the relative change of the winding parameters of the platform is not more than +/-2% for the same winding value of the test platform by the microprocessor unit 3, and if the relative change is met, the effectiveness of the winding deformation detection device meets the requirement, and the winding deformation detection device is qualified and can be put into field application.
And (7) ending the test.
In conclusion, the invention realizes a simple and easy-to-use method for testing the effectiveness of the transformer winding deformation detection device, can match the functional test of the transformer winding deformation detection device, can simulate various complicated power supply scenes of a power system at present, has strong applicability and flexibility, can evaluate the effectiveness of the transformer winding deformation detection device by using the platform, can ensure the credibility of the transformer winding deformation detection device on site to the transformer winding to the greatest extent, and simultaneously improves the working efficiency and quality of power supply operation and maintenance personnel, thereby greatly improving the effectiveness and flexibility of the transformer winding deformation detection device in the whole test process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A testing method for the effectiveness of a transformer winding deformation detection device is characterized in that: the testing method is suitable for a testing system for the effectiveness of a transformer winding deformation detection device, the testing system comprises a deformation generator, a winding deformation detection device clamp and a power source, wherein the winding deformation detection device clamp and the power source are connected with the deformation generator;
the deformation generator comprises silicon steel, wherein windings are arranged at two ends of the silicon steel to respectively form a single-winding deformation generator and a multi-winding deformation generator;
the single-winding deformation generator comprises a winding lifting block, an upper limiting block, a lower limiting block and a lifting rope, wherein the winding lifting block is arranged on silicon steel, a circle of winding is attached to the winding lifting block, the upper limiting block is respectively arranged on the left side and the right side of the upper part of the single-winding deformation generator, a certain gap is reserved between the upper limiting block and the lower limiting block, the winding lifting block is manually lifted through the lifting rope, the winding can deform, the winding lifting block is loosened, the winding returns to the original position due to the weight of the winding lifting block, and the microprocessor unit displays the result through the upper limit of the single-winding deformation;
the single-winding deformation generator of the multi-winding deformation generator comprises a winding lifting block, an upper limiting block, a lower limiting block and a lifting rope, wherein the winding lifting block, the upper limiting block, the lower limiting block and the lifting rope are arranged on silicon steel;
the sealing box is arranged at one end of the silicon steel, a bayonet for installing a sensor of the winding deformation detection device is arranged in the sealing box, and the sealing box is used for simulating the installation of the sensor of the transformer winding deformation detection device;
the test method comprises the following steps:
step (1) preparation of work before measurement
Clamping a transformer winding deformation detection device in a winding deformation detection device, sequentially installing vibration sensors at corresponding positions of a closed box, connecting a sensor signal output line to the transformer winding deformation detection device, and simultaneously connecting a voltage signal and a current signal to the transformer winding deformation detection device;
step (2) power-on detection of test platform
After the test platform is powered on, observing whether the communication between the microprocessor unit and the power source is normal; the transformer winding deformation detection device is connected with the vibration sensor to normally display an acceleration value, a voltage signal loop has no short circuit, a current signal loop has no open circuit, and the acceleration value can be normally displayed on the device; the power source is detected normally and has no short circuit; the microprocessor unit correctly reflects the states of the single-winding deformer and the multi-winding deformer;
step (3) the microprocessor unit controls the power source to output a certain power supply scene
Step (4) manually simulating winding deformation, and detecting effectiveness by using a measuring device
Firstly, manually lifting a manual lifting rope of the single-winding deformation generator to an upper limit, observing a transformer winding deformation detection device, and recording a detection result;
manually loosening the lifting rope to return to the lower limit, observing the transformer winding deformation detection device, and recording the detection result; switching to a multi-winding deformation generator, repeating the process, observing the transformer winding deformation detection device, and recording the detection result;
step (5) typical power supply scene coverage judgment;
step (6) evaluation of device effectiveness
Comparing the same winding value of the test platform with the original data and the historical data by the microprocessor unit, wherein the relative change of the winding parameter of the platform tested by the winding deformation detection device is not more than +/-2%;
and (7) finishing the test.
2. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 1, characterized in that: typical power supply scenarios include at least two of normal output, frequency deviation output, voltage deviation output, harmonic output, voltage fluctuation and flicker output, voltage sag output, and complex output.
3. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 2, characterized in that: the microprocessor unit judges whether the typical power supply scene is covered or not, and if not, the step (3) is returned to; if the coverage is available, the next step is directly carried out.
4. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 1, characterized in that: and the microprocessor unit simulates various situations, compares the same winding value with the original data and the historical data, and if the winding deformation detection device tests that the relative change of the winding parameters of the system is not more than +/-2%, the effectiveness of the winding deformation detection device meets the requirement.
5. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 1, characterized in that: 4 turns of windings are attached to a winding lifting block of the multi-winding deformation generator, and the deformation quantity of the single-winding deformation generator and the multi-winding deformation generator is set to be 3 cm.
6. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 1, characterized in that: the microprocessor unit controls the power source to generate complex power output through RS232 communication, and the deformation conditions of the single winding and the multiple winding are reflected through digital quantity input DI of the upper limit and the lower limit of the single winding and the multiple winding respectively.
7. The method for testing the effectiveness of the transformer winding deformation detection device according to claim 1, characterized in that: and voltage, current and vibration sensor signals required by the winding deformation detection device are acquired through the clamping position of the winding deformation detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188610.9A CN112986883B (en) | 2021-02-19 | 2021-02-19 | Effectiveness testing system and method for transformer winding deformation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188610.9A CN112986883B (en) | 2021-02-19 | 2021-02-19 | Effectiveness testing system and method for transformer winding deformation detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112986883A CN112986883A (en) | 2021-06-18 |
| CN112986883B true CN112986883B (en) | 2022-08-16 |
Family
ID=76393434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110188610.9A Active CN112986883B (en) | 2021-02-19 | 2021-02-19 | Effectiveness testing system and method for transformer winding deformation detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112986883B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327448B (en) * | 2022-07-01 | 2025-05-06 | 国网宁夏电力有限公司宁东供电公司 | Device and method for collecting transformer impedance data |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084168A1 (en) * | 2000-05-04 | 2001-11-08 | Georgia Tech Research Corporation | System and method for off-line impulse frequency response analysis test |
| CN201007732Y (en) * | 2007-02-05 | 2008-01-16 | 北京伏安电气公司 | A winding deformation test pliers |
| CN101545962A (en) * | 2009-04-21 | 2009-09-30 | 江苏省电力试验研究院有限公司 | Integral check system of FRA-type winding deformation tester |
| KR20140045767A (en) * | 2012-10-09 | 2014-04-17 | 대우조선해양 주식회사 | Calibration system and method for weld tester |
| CN104535955A (en) * | 2015-01-15 | 2015-04-22 | 国网四川省电力公司电力科学研究院 | Calibration device and method of transformer frequency response method winding deformation tester |
| CN106526409A (en) * | 2016-10-28 | 2017-03-22 | 华北电力大学（保定） | Transformer winding deformation live testing system and testing method thereof |
| KR101751404B1 (en) * | 2016-03-17 | 2017-06-28 | 삼성전자 주식회사 | Magnetic field monitoring probe, magnetic resonance imaging apparatus comprising the same and control method for the same |
| CN107015077A (en) * | 2017-02-23 | 2017-08-04 | 广西电网有限责任公司电力科学研究院 | A kind of deformation of transformer winding analogue means |
| CN206479625U (en) * | 2017-03-02 | 2017-09-08 | 福建瑞能博尔电力设备有限公司 | Deformation of transformer winding tester calibration device |
| CN107783072A (en) * | 2017-11-13 | 2018-03-09 | 广西电网有限责任公司电力科学研究院 | A kind of flexible winding deformation analogue means |
| CN210894654U (en) * | 2019-08-29 | 2020-06-30 | 广州市兆能有限公司 | Transformer winding deformation testing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466034B1 (en) * | 2001-05-29 | 2002-10-15 | Powertech Labs Inc. | Transformer winding movement detection by high frequency internal response analysis |
| CN101738567B (en) * | 2008-11-25 | 2012-05-30 | 上海市电力公司 | The Method of Using Constant Current Sweep Frequency Power Supply to Excite and Detect the State of Transformer Winding |
| WO2011010325A1 (en) * | 2009-07-23 | 2011-01-27 | Indian Institute Of Technology, Bombay | An on-line diagnostic method for health monitoring of a transformer |
-
2021
- 2021-02-19 CN CN202110188610.9A patent/CN112986883B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084168A1 (en) * | 2000-05-04 | 2001-11-08 | Georgia Tech Research Corporation | System and method for off-line impulse frequency response analysis test |
| CN201007732Y (en) * | 2007-02-05 | 2008-01-16 | 北京伏安电气公司 | A winding deformation test pliers |
| CN101545962A (en) * | 2009-04-21 | 2009-09-30 | 江苏省电力试验研究院有限公司 | Integral check system of FRA-type winding deformation tester |
| KR20140045767A (en) * | 2012-10-09 | 2014-04-17 | 대우조선해양 주식회사 | Calibration system and method for weld tester |
| CN104535955A (en) * | 2015-01-15 | 2015-04-22 | 国网四川省电力公司电力科学研究院 | Calibration device and method of transformer frequency response method winding deformation tester |
| KR101751404B1 (en) * | 2016-03-17 | 2017-06-28 | 삼성전자 주식회사 | Magnetic field monitoring probe, magnetic resonance imaging apparatus comprising the same and control method for the same |
| CN106526409A (en) * | 2016-10-28 | 2017-03-22 | 华北电力大学（保定） | Transformer winding deformation live testing system and testing method thereof |
| CN107015077A (en) * | 2017-02-23 | 2017-08-04 | 广西电网有限责任公司电力科学研究院 | A kind of deformation of transformer winding analogue means |
| CN206479625U (en) * | 2017-03-02 | 2017-09-08 | 福建瑞能博尔电力设备有限公司 | Deformation of transformer winding tester calibration device |
| CN107783072A (en) * | 2017-11-13 | 2018-03-09 | 广西电网有限责任公司电力科学研究院 | A kind of flexible winding deformation analogue means |
| CN210894654U (en) * | 2019-08-29 | 2020-06-30 | 广州市兆能有限公司 | Transformer winding deformation testing device |
Non-Patent Citations (2)
| Title |
|---|
| Study on System Identification based on Rogowski coil measuring;Feng Gao 等;《2011 International Conference on Electrical and Control Engineering》;20111231;全文 * |
| 绕组变形测试仪校准系统的不确定度分析;翟少磊 等;《电气自动化》;20200531;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112986883A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hashemnia et al. | Improved power transformer winding fault detection using FRA diagnostics–part 2: radial deformation simulation | |
| US8219335B2 (en) | Electric winding displacement detection method and apparatus | |
| García et al. | Transformer tank vibration modeling as a method of detecting winding deformations-part II: experimental verification | |
| EP0769150B1 (en) | Monitoring of internal partial discharges on a power transformer | |
| Bagheri et al. | A new vibration analysis approach for transformer fault prognosis over cloud environment | |
| CN106569170B (en) | A secondary circuit detector of a metering device and its detection method | |
| Athikessavan et al. | Inter-turn fault detection of dry-type transformers using core-leakage fluxes | |
| Cabanas et al. | A new online method based on leakage flux analysis for the early detection and location of insulating failures in power transformers: Application to remote condition monitoring | |
| CN103033695B (en) | The detection method of transformer tolerance DC magnetic biasing ability | |
| CN112986883B (en) | Effectiveness testing system and method for transformer winding deformation detection device | |
| CN204694836U (en) | A kind of electric energy meter power frequency magnetic field influence amount test unit | |
| Hu et al. | Flux linkage detection based ground fault identification and system diagnosis in high-resistance grounding systems | |
| CN106959406B (en) | Test device and method for magnetizing generator core under low voltage | |
| Konishi et al. | Tank Vibration Analysis of an Extra‐High‐Voltage Transformer | |
| Cabanas et al. | Insulation fault diagnosis in high voltage power transformers by means of leakage flux analysis | |
| CN106597356A (en) | Single-phase electric energy meter power frequency magnetic field influence quantity testing apparatus | |
| CN106952182B (en) | Power transformer winding fault diagnosis method based on vibration distribution characteristics | |
| Manohar et al. | Transformer winding fault diagnosis by vibration monitoring | |
| Cabanas et al. | Detection of insulation faults on disc-type winding transformers by means of leakage flux analysis | |
| Zheng et al. | Analysis on the Influence of the DC bias on spatial magnetic flux leakage in the transformer | |
| CN115877307A (en) | A 10kV-110kV current transformer residual magnetism maintenance method | |
| Li et al. | Simulation Analysis of Power Transformer Internal Short Circuit for Magnetic Flux Leakage Distribution Feature Extraction | |
| CN203965616U (en) | Single-phase or three phases electronic energy meter stationary magnetic field affects test unit | |
| CN209486281U (en) | A kind of three-phase mutual inductor simulation linked network detection system | |
| CN102841257B (en) | For testing the instrument of transformer single-phase short circuit impedance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |