CN109782137A - A kind of insulation line monitoring device and method - Google Patents
A kind of insulation line monitoring device and method Download PDFInfo
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- CN109782137A CN109782137A CN201811490336.5A CN201811490336A CN109782137A CN 109782137 A CN109782137 A CN 109782137A CN 201811490336 A CN201811490336 A CN 201811490336A CN 109782137 A CN109782137 A CN 109782137A
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- 238000009413 insulation Methods 0.000 title claims abstract description 29
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 11
- 238000005070 sampling Methods 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 11
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims description 14
- 238000004082 amperometric method Methods 0.000 claims description 9
- 206010044565 Tremor Diseases 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000032683 aging Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of insulation line monitoring devices, comprising: insulating properties Acquisition Circuit, voltage sampling circuit, current sampling circuit, switching value observation circuit, data communication circuit, data presentation device, alarm control circuit and central processing unit；The signal end of central processing unit is connected with the signal end of insulating properties Acquisition Circuit, voltage sampling circuit, current sampling circuit, switching value observation circuit, data communication circuit, data display circuit and alarm control circuit respectively.The present invention is using the quality of dielectric loss angle judgement insulation, it can be achieved that whether unit under test insulating properties real time monitoring, can monitor cable, insulator and arrester due to misloading or problem of aging, insulating properties declines and generates electric leakage, even accident problem etc..
Description
Technical field
The present invention relates to technical field of insulation detection, especially a kind of insulation line monitoring device and method.
Background technique
It is also most important link is exactly power transmission that power equipment is most basic in operation engineering, in high-pressure system, electricity
Power transmission is mostly to cause cable to have absolutely essential status during electricity consumption by cable transmission, and cable
Insulation performance is the guarantee of our power system stabilities.It is shown in power system accident safety survey according to statistics, largely
When upper generation electric power accident caused by the damage of cable.Monitoring for insulating performance of cable is particularly important, so
And regularly repair and obviously not can solve problem brought by cable insulation damage, this is a potential crisis, passes through people
To overhaul the damaged condition for being very difficult to judge cable.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of insulation line monitoring device and methods, originally
Application using dielectric loss angle judgement insulation quality, it can be achieved that unit under test insulating properties monitor in real time, can monitor cable, insulator and
Whether arrester is due to misloading or problem of aging, and insulating properties declines and generates electric leakage, even accident problem etc..
The purpose of the present invention is achieved through the following technical solutions:
A kind of insulation line monitoring device, comprising:
Insulating properties Acquisition Circuit, the insulating properties Acquisition Circuit are used to acquire the dielectric loss angle of unit under test, and just by dielectric loss angle
Cut the quality of insulation for judging unit under test；
Voltage sampling circuit, the voltage sampling circuit are used to acquire the three-phase voltage information of unit under test；
Current sampling circuit, the current sampling circuit are used to monitor the current information of plurality of positions；
Switching value observation circuit, the switching value observation circuit are used for monitoring switch amount mission bit stream；
Data communication circuit, the data communication circuit are used to establish data link channel with external equipment or remote equipment；
Data presentation device, the data presentation device are used to show the data information of monitoring；
Alarm control circuit, the alarm control circuit include buzzer and alarm lamp, and alarm control circuit is used for abnormal feelings
Condition is alarmed；
Central processing unit, the central processing unit is for obtaining dielectric loss angle information, three-phase voltage information, multiple spot current information
And switching value mission bit stream, and analyze and determine according to the data information of acquisition the insulating properties and energized state of cable, and it is right
Abnormal conditions are alarmed；
The signal end of central processing unit respectively with insulating properties Acquisition Circuit, voltage sampling circuit, current sampling circuit, switching value
Observation circuit, data communication circuit, data display circuit and alarm control circuit signal end be connected.
Preferably, voltage sampling circuit includes voltage sample circuit and voltage analysis circuit, the input in voltage sample circuit
End is connected with A phase collection terminal, B phase collection terminal and C phase collection terminal respectively, the output end in voltage sample circuit and voltage analysis circuit
Input terminal be connected, the output end in voltage analysis circuit is connected with the input terminal of central processing unit.
Preferably, current sampling circuit includes current sampling circuit, amperometry circuit and several current collecting devices, if
The signal end of dry current collecting device is connected with the signal end of current sampling circuit respectively, the output end and electricity of current sampling circuit
The input terminal for flowing analysis circuit is connected, and the output end in amperometry circuit is connected with the input terminal of central processing unit.
It preferably, further include control switch, control switch, which includes key control loop, and key disappears trembles circuit, by keying
Circuit processed is disappeared by key trembles circuit and is connected with central processing unit.
Preferably, the unit under test includes cable, insulator and arrester.
Preferably, central processing unit includes cortex-m3 processor.
A kind of insulated on-line monitoring method, which comprises
S1, dielectric loss angle information, three-phase voltage information, current information and the switching value mission bit stream for obtaining unit under test；
S2, pass through the dielectric loss angle information of acquisition, three-phase voltage information, current information and switching value mission bit stream and preset dielectric loss
Angle valve value, three-phase voltage threshold values, current threshold and switching value task comparison value are compared, if comparison result and threshold values are not
Symbol, then trigger breaker relay, data presentation device and controlling alarm circuit.
The beneficial effects of the present invention are: the present invention is using the quality of dielectric loss angle judgement insulation, it can be achieved that unit under test insulate
Property real time monitoring, cable, insulator and arrester can be monitored whether due to misloading or problem of aging, insulating properties declines and generates
Electric leakage, even accident problem etc..
Detailed description of the invention
Fig. 1 is internal module connection block diagram of the invention；
In figure, 101- central processing unit, 102- insulating properties Acquisition Circuit, 103- voltage sample circuit, 104- voltage analysis time
Road, 105- key control loop, 106- key, which disappears, trembles circuit, 107- current sampling circuit, 108- amperometry circuit, 109- number
According to communicating circuit, 110- switching value observation circuit, 111- data presentation device, 112- alarm control circuit.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
A kind of insulation line monitoring device please refers to shown in attached drawing 1, comprising:
Insulating properties Acquisition Circuit 102, the insulating properties Acquisition Circuit 102 are used to acquire the dielectric loss angle of unit under test, and pass through Jie
Damage angle tangent judges the quality of insulation of unit under test；
Voltage sampling circuit, the voltage sampling circuit are used to acquire the three-phase voltage information of unit under test；
Current sampling circuit, the current sampling circuit are used to monitor the current information of plurality of positions；
Switching value observation circuit 110, the switching value observation circuit are used for monitoring switch amount mission bit stream；
Data communication circuit 109, the data communication circuit 109 are used to establish data link with external equipment or remote equipment logical
Road；
Data presentation device 111, the data presentation device 111 are used to show the data information of monitoring；
Alarm control circuit 112, the alarm control circuit 112 include buzzer and alarm lamp, and alarm control circuit 112 is used for
It alarms abnormal conditions；
Central processing unit 101, the central processing unit 101 is for obtaining dielectric loss angle information, three-phase voltage information, multiple spot electricity
Stream information and switching value mission bit stream, and according to the insulating properties and energization shape of the data information of acquisition analytical judgment cable
State, and alarm abnormal conditions；
The signal end of central processing unit 101 respectively with insulating properties Acquisition Circuit 102, voltage sampling circuit, current sampling circuit,
Switching value observation circuit 110, data communication circuit 109, data display circuit 111 and alarm control circuit 112 signal end
It is connected.
Preferably, voltage sampling circuit includes voltage sample circuit 103 and voltage analysis circuit 104, voltage sample circuit
103 input terminal is connected with A phase collection terminal, B phase collection terminal and C phase collection terminal respectively, the output end in voltage sample circuit 103 with
The input terminal in voltage analysis circuit 104 is connected, the output end in voltage analysis circuit 104 and the input terminal of central processing unit 101
It is connected.
Preferably, current sampling circuit includes current sampling circuit 107, amperometry circuit 108 and several current acquisitions
Device, the signal end of several current collecting devices are connected with the signal end of current sampling circuit 107 respectively, current sampling circuit
107 output end is connected with the input terminal in amperometry circuit 108, the output end and central processing list in amperometry circuit 108
The input terminal of member 101 is connected.
It preferably, further include control switch, control switch, which includes key control loop 105, and key disappears trembles circuit 106,
Key control loop 105 is disappeared by key trembles circuit 106 and is connected with central processing unit 101.
Preferably, the unit under test includes cable, insulator and arrester.
Preferably, central processing unit 101 includes cortex-m3 processor.
A kind of insulated on-line monitoring method, which comprises
S1, dielectric loss angle information, three-phase voltage information, current information and the switching value mission bit stream for obtaining unit under test；
S2, pass through the dielectric loss angle information of acquisition, three-phase voltage information, current information and switching value mission bit stream and preset dielectric loss
Angle valve value, three-phase voltage threshold values, current threshold and switching value task comparison value are compared, if comparison result and threshold values are not
Symbol, then trigger breaker relay, data presentation device and controlling alarm circuit.
It should be noted that power equipment most basic and most important link in operation engineering is exactly power transmission,
In high-pressure system, power transmission is mostly to pass through cable transmission, causes cable to have during electricity consumption absolutely essential
Status, and the insulation performance of cable is the guarantee of our power system stabilities.How to go to judge that insulating performance of cable becomes solution
The key of this problem is shown by numerous data, and the exchange of technology of cable is directed to cable producer, it has been found that dielectric loss
Angle (dielectric loss angle) be one reflection Insulating Performance for HV Electric Equipments important indicator, the variation of dielectric loss angle can reflect by
Tide, deterioration be rotten or insulation in the insulation defects such as gas discharge, therefore it is research insulation ag(e)ing feature and online for measuring dielectric loss angle
Monitor insulation status an important content, using dielectric loss angle indicate dielectric quality quality be it is inconvenient, because
It is related for factors such as dielectric loss angle value and test voltage, media sizes, it is difficult to be compared between distinct device, so using dielectric loss angle instead
Tangent come judge insulation quality.
Specific monitoring method is, after realizing the processes such as conversion, amplification, filtering, triggering, the sampling of signal, by software portion
Divide according to fetched data founding mathematical models, using analysis methods such as FFT, calculates dielectric loss, partial discharge, frequency, capacitor, each time
The physical quantitys such as leakage current are stored in database, the criterion as analysis likelihood of failure.On-line monitoring system is generally by intelligently connecing
Earth signal extraction system, signal acquiring system, analysis and diagnosis system composition.
The present invention is using the quality of dielectric loss angle judgement insulation, it can be achieved that unit under test insulating properties real time monitoring, can monitor electricity
Whether cable, insulator and arrester are due to misloading or problem of aging, and insulating properties declines and generates electric leakage, even accident problem
Deng.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (7)
1. a kind of insulation line monitoring device characterized by comprising
Insulating properties Acquisition Circuit, the insulating properties Acquisition Circuit are used to acquire the dielectric loss angle of unit under test, and just by dielectric loss angle
Cut the quality of insulation for judging unit under test；
Voltage sampling circuit, the voltage sampling circuit are used to acquire the three-phase voltage information of unit under test；
Current sampling circuit, the current sampling circuit are used to monitor the current information of plurality of positions；
Switching value observation circuit, the switching value observation circuit are used for monitoring switch amount mission bit stream；
Data communication circuit, the data communication circuit are used to establish data link channel with external equipment or remote equipment；
Data presentation device, the data presentation device are used to show the data information of monitoring；
Alarm control circuit, the alarm control circuit include buzzer and alarm lamp, and alarm control circuit is used for abnormal feelings
Condition is alarmed；
Central processing unit, the central processing unit is for obtaining dielectric loss angle information, three-phase voltage information, multiple spot current information
And switching value mission bit stream, and analyze and determine according to the data information of acquisition the insulating properties and energized state of cable, and it is right
Abnormal conditions are alarmed；
The signal end of central processing unit respectively with insulating properties Acquisition Circuit, voltage sampling circuit, current sampling circuit, switching value
Observation circuit, data communication circuit, data display circuit and alarm control circuit signal end be connected.
2. a kind of insulation line monitoring device according to claim 1, which is characterized in that voltage sampling circuit includes that voltage is adopted
Sample circuit and voltage analysis circuit, the input terminal in voltage sample circuit respectively with A phase collection terminal, B phase collection terminal and C phase collection terminal
It is connected, the output end in voltage sample circuit is connected with the input terminal in voltage analysis circuit, and the output end in voltage analysis circuit is in
The input terminal of Central Processing Unit is connected.
3. a kind of insulation line monitoring device according to claim 1, which is characterized in that current sampling circuit includes that electric current is adopted
Sample circuit, amperometry circuit and several current collecting devices, the signal end of several current collecting devices respectively with current sample
The signal end in circuit is connected, and the output end of current sampling circuit is connected with the input terminal in amperometry circuit, amperometry circuit
Output end be connected with the input terminal of central processing unit.
4. a kind of insulation line monitoring device according to claim 1, which is characterized in that it further includes control switch, control
Switch disappears including key control loop and key trembles circuit, and key control loop is disappeared by key trembles circuit and central processing unit
It is connected.
5. a kind of insulation line monitoring device according to claim 1, which is characterized in that the unit under test include cable,
Insulator and arrester.
6. a kind of insulation line monitoring device according to claim 1, which is characterized in that central processing unit includes
Cortex-m3 processor.
7. a kind of insulated on-line monitoring method, which is characterized in that the described method includes:
S1, dielectric loss angle information, three-phase voltage information, current information and the switching value mission bit stream for obtaining unit under test；
S2, pass through the dielectric loss angle information of acquisition, three-phase voltage information, current information and switching value mission bit stream and preset dielectric loss
Angle valve value, three-phase voltage threshold values, current threshold and switching value task comparison value are compared, if comparison result and threshold values are not
Symbol, then trigger breaker relay, data presentation device and controlling alarm circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490336.5A CN109782137A (en) | 2018-12-06 | 2018-12-06 | A kind of insulation line monitoring device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490336.5A CN109782137A (en) | 2018-12-06 | 2018-12-06 | A kind of insulation line monitoring device and method |
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| CN109782137A true CN109782137A (en) | 2019-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117630607A (en) * | 2023-12-06 | 2024-03-01 | 海南电网有限责任公司输电运检分公司 | Insulated test electrode device applied to live working |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121962A (en) * | 2010-12-30 | 2011-07-13 | 西安交通大学 | High-voltage ceramic capacitance sensor for monitoring local discharge of electric generator on line |
| CN102879716A (en) * | 2012-09-24 | 2013-01-16 | 哈尔滨理工大学 | Online monitoring method and device for main insulation of three-phase cable under metal sheath cross interconnection |
| CN102981106A (en) * | 2012-11-12 | 2013-03-20 | 华北电力大学 | Online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge |
| CN103454547A (en) * | 2013-08-28 | 2013-12-18 | 国网浙江省电力公司嘉兴供电公司 | High-voltage equipment insulation on-line monitoring system |
| CN103592563A (en) * | 2013-11-22 | 2014-02-19 | 国家电网公司 | Direct current system insulation on-line monitoring device |
| JP2016042046A (en) * | 2014-08-15 | 2016-03-31 | 三宝電機株式会社 | Dielectric loss tangent measurement device and method thereof, and power cable diagnosis device and method thereof |
| CN207719893U (en) * | 2018-01-25 | 2018-08-10 | 国网湖北省电力公司宜昌供电公司 | A kind of intelligent front end acquisition measure and control device |
-
2018
- 2018-12-06 CN CN201811490336.5A patent/CN109782137A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121962A (en) * | 2010-12-30 | 2011-07-13 | 西安交通大学 | High-voltage ceramic capacitance sensor for monitoring local discharge of electric generator on line |
| CN102879716A (en) * | 2012-09-24 | 2013-01-16 | 哈尔滨理工大学 | Online monitoring method and device for main insulation of three-phase cable under metal sheath cross interconnection |
| CN102981106A (en) * | 2012-11-12 | 2013-03-20 | 华北电力大学 | Online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge |
| CN103454547A (en) * | 2013-08-28 | 2013-12-18 | 国网浙江省电力公司嘉兴供电公司 | High-voltage equipment insulation on-line monitoring system |
| CN103592563A (en) * | 2013-11-22 | 2014-02-19 | 国家电网公司 | Direct current system insulation on-line monitoring device |
| JP2016042046A (en) * | 2014-08-15 | 2016-03-31 | 三宝電機株式会社 | Dielectric loss tangent measurement device and method thereof, and power cable diagnosis device and method thereof |
| CN207719893U (en) * | 2018-01-25 | 2018-08-10 | 国网湖北省电力公司宜昌供电公司 | A kind of intelligent front end acquisition measure and control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117630607A (en) * | 2023-12-06 | 2024-03-01 | 海南电网有限责任公司输电运检分公司 | Insulated test electrode device applied to live working |
| CN117630607B (en) * | 2023-12-06 | 2025-03-14 | 海南电网有限责任公司输电运检分公司 | An insulation test electrode device for live working |
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Application publication date: 20190521 |