CN113985308B - Power plant security power system switching performance test system and method - Google Patents
Power plant security power system switching performance test system and method Download PDFInfo
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- CN113985308B CN113985308B CN202111267105.XA CN202111267105A CN113985308B CN 113985308 B CN113985308 B CN 113985308B CN 202111267105 A CN202111267105 A CN 202111267105A CN 113985308 B CN113985308 B CN 113985308B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000011056 performance test Methods 0.000 title claims description 9
- 238000012360 testing method Methods 0.000 claims abstract description 70
- 238000011156 evaluation Methods 0.000 claims description 29
- 230000003111 delayed effect Effects 0.000 claims description 20
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- RUXBJTDGOHITBG-UHFFFAOYSA-N 4-[6-(3-hydroxyphenyl)pyrazin-2-yl]benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1C1=CN=CC(C=2C=C(O)C=CC=2)=N1 RUXBJTDGOHITBG-UHFFFAOYSA-N 0.000 claims 20
- FJNNGDRUSXSMAJ-UHFFFAOYSA-N 2-[[2-[(1,1-dioxo-2,3-dihydro-1,2-benzothiazol-6-yl)amino]pyrimidin-4-yl]-(1h-indazol-4-yl)amino]ethanol Chemical compound C=1C=NC(NC=2C=C3S(=O)(=O)NCC3=CC=2)=NC=1N(CCO)C1=CC=CC2=C1C=NN2 FJNNGDRUSXSMAJ-UHFFFAOYSA-N 0.000 claims 18
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
- G01R31/40—Testing power supplies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses a system and a method for testing the switching performance of a security power supply system of a power plant.A factory power supply section PC I is connected with a security section working power supply breaker 3DL through a factory power supply section PC I feeder breaker 1DL and provides working power for the security PC section through the factory power supply section PC I; the factory power supply section PC II is connected with the security PC section through the factory power supply section PC II feeder circuit breaker 2DL and the security section standby power circuit breaker 4DL, and provides standby power for the security PC section through the factory power supply section PC II; the emergency diesel generator is connected with the security PC section through a diesel generator outlet breaker 01DL and a security section emergency power supply breaker 02DL, and provides emergency power for the security PC section through the emergency diesel generator; the security PC section is connected with the security section load through the security section load breaker XXDL, and the system and the method can test the correctness and the reliability of the power supply switching.
Description
Technical Field
The invention belongs to the technical field of electric power debugging and electric power test, and relates to a system and a method for testing switching performance of a security power supply system of a power plant.
Background
When the working power supply of the security section of the power plant is lost, the power supply of the security section is switched to a standby power supply or to the security power supply of the diesel generating set. The load of the power supply of the security section is extremely important, and the security of the generator set is directly affected. The working power supply of the security section is lost, wherein the correctness and reliability of the power supply switching are required to be tested.
At present, technical standards such as GB/T14285-2006 relay protection and safety automatic device technical regulations and DL/T526-2002 automatic static standby power supply switching device technical conditions in China are not explicitly described for specific requirements and evaluation standards of a testing method of a safety power supply switching system. The acceptance criteria of the "DLT 5295-2013 thermal power generation construction engineering unit debugging quality acceptance and evaluation procedure" on security power supply system debugging unit engineering are: normal operation and meets the design and standard requirements. Only the electric interlocking condition of the diesel generator is specified in the technical specification of station service electricity design of the DLT 5153-2014 thermal power plant.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a system and a method for testing the switching performance of a security power system of a power plant, which can test the correctness and the reliability of power switching.
In order to achieve the above purpose, the switching performance test system of the security power system of the power plant of the present invention comprises a factory power supply section PC I, a factory power supply section PC II, a factory power supply section PC I feeder breaker 1DL, a factory power supply section PC II feeder breaker 2DL, a security working power breaker 3DL, a security standby power breaker 4DL, a security PC section, an emergency diesel generator, a diesel generator outlet breaker 01DL, a security emergency power breaker 02DL, a security load breaker XXDL and an automatic switching device;
The factory power supply section PC I section is connected with the security section PC section through the factory power supply section PC I section feeder circuit breaker 1DL and the security section working power circuit breaker 3DL, and provides working power for the security section PC through the factory power supply section PC I section; the factory power supply section PC II is connected with the security PC section through the factory power supply section PC II feeder circuit breaker 2DL and the security section standby power circuit breaker 4DL, and provides standby power for the security PC section through the factory power supply section PC II; the emergency diesel generator is connected with the security PC section through a diesel generator outlet breaker 01DL and a security section emergency power supply breaker 02DL, and provides emergency power for the security PC section through the emergency diesel generator; the security PC section is connected with the security section load through a security section load breaker XXDL;
The automatic switching device is connected with a safety section load circuit breaker XXDL, an emergency diesel generator, a safety section emergency power circuit breaker 02DL, a diesel generator outlet circuit breaker 01DL, a safety section standby power circuit breaker 4DL, a factory power supply section PC II section feeder circuit breaker 2DL, a safety section working power circuit breaker 3DL and a factory power supply section PC I section feeder circuit breaker 1 DL.
The invention relates to a method for testing the switching performance of a security power system of a power plant, which comprises the following steps:
1) Performing early preparation of switching performance test of the automatic switching device;
2) Performing charge and discharge test of the automatic switching device;
3) Switching test from the working power supply to the standby power supply is carried out;
4) Switching test from the working power supply to the emergency power supply is carried out;
5) And performing a switching test from the working power supply to the standby power supply, and then testing the switching test of the emergency diesel generator.
The specific operation of the step 2) is as follows:
When the following conditions are met, the automatic switching device starts charging, and the switching function is opened;
31a) The function input of the automatic switching device;
31b) The safety section working power circuit breaker 3DL is combined, and the safety section standby power circuit breaker 4DL and the safety section emergency power circuit breaker 02DL are separated simultaneously.
31C) The bus corresponding to the safety section working power circuit breaker 3DL has voltage;
31d) No external lockout condition;
If any one of the following is satisfied, the automatic switching device discharges, and the switching function is locked;
32a) The function of the automatic switching device exits;
32b) After the automatic switching device acts;
32c) The external locking automatic switching device is provided with an opening;
32d) Manually operating a PC I section of a power supply section for a cutting factory;
32e) The safety section emergency power circuit breaker 02DL and the safety section emergency power circuit breaker 4DL are discharged after being switched on;
32f) The guard-stage operating power circuit breaker 3DL fails to discharge upon trip.
The test conditions tested in step 3) were: the power supply section PC I section feeder circuit breaker 1DL of the factory, the power supply section PC II section feeder circuit breaker 2DL of the factory and the safety section working power circuit breaker 3DL are in a closing state, and the safety section standby power circuit breaker 4DL, the diesel generator outlet circuit breaker 01DL and the safety section emergency power circuit breaker 02DL are in a breaking state;
The test content and the judgment standard are as follows:
31 Simulating that the working bus is pressureless and the working power supply is currentless, and testing the automatic switching device to start the switching function;
Specifically, the automatic switching device is charged, the standby power supply is normal, the safety PC section is out of voltage and the working power supply has no current, the safety section working power supply breaker 3DL is broken, and the safety section standby power supply breaker 4DL is switched on in a delayed manner; the evaluation criteria are: the safety section working power circuit breaker 3DL is delayed for 1.5s after breaking, and the safety section standby power circuit breaker 4DL is switched on;
32 The safety section working power circuit breaker 3DL steals and jumps and has no current, and the automatic switching device is tested to start the switching function;
Specifically, the automatic switching device is charged, the standby power supply is normal, the safety section working power supply breaker 3DL is in a switching-off state, the working power supply is free of current, and the safety section standby power supply breaker 4DL is in a delayed switching-on state, and the judgment standard is as follows: after a delay of 1.5s, the safety section standby power circuit breaker 4DL is closed.
The test conditions tested in step 4) were: the power supply section PC I section feeder circuit breaker 1DL of the factory, the power supply section PC II section feeder circuit breaker 2DL of the factory and the safety section working power circuit breaker 3DL are in a closing state, and the safety section standby power circuit breaker 4DL, the diesel generator outlet circuit breaker 01DL and the safety section emergency power circuit breaker 02DL are in a breaking state;
Test content and evaluation criteria:
41 Simulating that the working bus is pressureless and the working power supply is currentless, and testing the automatic switching device to start the switching function;
specifically, the automatic switching device is charged, the standby power supply is abnormal, the security PC section is out of voltage, the working power supply has no current, and an emergency diesel generator instruction is started; the evaluation criteria are: the safety section working power circuit breaker 3DL breaks, and then delays for 1.5s, and an emergency diesel generator is started;
42 The safety section working power circuit breaker 3DL is separated and has no current, and the automatic switching device is tested to start the switching function;
specifically, the automatic switching device is charged completely, the standby power supply is abnormal, the safety section working power supply breaker 3DL is in a switching-off state, the working power supply has no current, the emergency diesel generator is started, and the emergency diesel generator instruction is started in a delayed manner; the evaluation criteria are: and (5) delaying for 1.5s, and starting the emergency diesel generator.
The test conditions tested in step 5) were: when the power supply device normally operates before switching, the power supply section PC I feeder circuit breaker 1DL, the power supply section PC II feeder circuit breaker 2DL and the safety section working power circuit breaker 3DL are in a closing state, and the safety section standby power circuit breaker 4DL, the diesel generator outlet circuit breaker 01DL and the safety section emergency power circuit breaker 02DL are in a breaking state;
Test content and evaluation criteria:
51 Simulating that the working bus is pressureless and the working power supply is currentless, and testing the starting and switching functions of the automatic switching device;
specifically, the automatic switching device is charged, the standby power supply is normal, the safety PC section is out of voltage and the working power supply has no current, the safety section standby power supply breaker 4DL is switched on in a delayed manner, the safety section standby power supply breaker 4DL is switched off, and the emergency diesel generator is started; the evaluation criteria are: the safety section working power circuit breaker 3DL is disconnected, after 1.5s of delay, the safety section standby power circuit breaker 4DL is closed, the safety PC section is in voltage loss, the delay is disconnected, the safety section standby power circuit breaker 4DL is started up to an emergency diesel generator;
52 Simulating that the working bus is pressureless and the working power supply is currentless, and testing the starting and switching functions of the automatic switching device;
Specifically, the charging is completed, the standby power supply is normal, the safety PC section is out of voltage and the working power supply has no current, the safety section standby power supply breaker 4DL is refused to be closed, and the emergency diesel generator is started; the evaluation criteria are: delaying for 1.5s, and starting an emergency diesel generator;
53 The safety section working power circuit breaker 3DL is separated and has no current, and the automatic switching device is tested to start the switching function;
Specifically, the automatic switching device is charged, the standby power supply is normal, the safety PC section is out of voltage, the working power supply has no current, the safety section standby power supply breaker 4DL is switched on in a delayed manner, the safety section standby power supply breaker 4DL is switched off, and the emergency diesel generator is started; the evaluation criteria are: the safety section working power circuit breaker 3DL is disconnected, after 1.5s of delay, the safety section standby power circuit breaker 4DL is closed, the safety PC section is in voltage loss, the delay is disconnected, the safety section standby power circuit breaker 4DL is started up to an emergency diesel generator;
54 The safety section working power circuit breaker 3DL is separated and has no current, and the automatic switching device is tested to start the switching function;
Specifically, the charging is completed, the standby power supply is normal, the security PC section is out of voltage, the working power supply has no current, and the emergency diesel generator is started; the evaluation criteria are: and (5) delaying for 1.5s, and starting the emergency diesel generator.
The invention has the following beneficial effects:
when the system and the method for testing the switching performance of the security power supply system of the power plant are specifically operated, the charging and discharging test of the automatic switching device, the switching test of the working power supply to the standby power supply, the switching test of the working power supply to the emergency power supply and the switching test of the working power supply to the standby power supply are sequentially carried out, and then the switching test of the emergency diesel generator is tested, so that the stability and the correctness of the switching of the power supply are tested, the operation is simple and convenient, and the safety and the reliability of the switching of the security power supply system of the power plant can be improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Fig. 2 is a flow chart of the present invention.
FIG. 3 is a diagram of the charging and discharging logic of the robot of the present invention.
FIG. 4 is a flow chart of a test for switching from a working power supply to a standby power supply according to the present invention
FIG. 5 is a flow chart of a power switching test from the working power supply to the diesel generator according to the present invention
FIG. 6 is a flow chart of a test for switching the working power supply to the standby power supply and then switching the power supply of the diesel generator
Wherein, 1 is the power supply section PC I section of the factory, 2 is the power supply section PC II section of the factory, 3 is the feeder circuit breaker 1DL of the power supply section PC I section of the factory, 4 is the feeder circuit breaker 2DL of the power supply section PC II section of the factory, 5 is the working power circuit breaker 3DL of the security section, 6 is the standby power circuit breaker 4DL of the security section, 7 is the security PC section, 8 is the emergency diesel generator, 9 is the exit circuit breaker 01DL of the diesel generator, 10 is the emergency power circuit breaker 02DL of the security section, 11 is the load circuit breaker XXDL of the security section, 12 is the automatic switching device.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, but not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the accompanying drawings, there is shown a schematic structural diagram in accordance with a disclosed embodiment of the invention. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
Referring to fig. 1, the switching performance test system of the security power system of the power plant of the present invention includes a power supply section PC I section 1 for a plant, a power supply section PC II section 2 for a plant, a feeder circuit breaker 1DL3 for a power supply section PC I section for a plant, a feeder circuit breaker 2DL4 for a power supply section PC II section for a plant, a working power circuit breaker 3DL5 for a security section, a standby power circuit breaker 4DL6 for a security section, a security PC section 7, an emergency diesel generator 8, a diesel generator outlet circuit breaker 01DL9, a security section emergency power circuit breaker 02DL10, a load circuit breaker XXDL for a security section and an automatic switching device 12;
The factory power supply section PC I section 1 is connected with the security PC section 7 through the factory power supply section PC I section feeder circuit breaker 1DL3 and the security section working power circuit breaker 3DL5, and provides working power for the security PC section 7 through the factory power supply section PC I section 1; the factory power supply section PC II section 2 is connected with the security PC section 7 through the factory power supply section PC II section feeder circuit breaker 2DL4 and the security section standby power circuit breaker 4DL6, and provides standby power for the security PC section 7 through the factory power supply section PC II section 2; the emergency diesel generator 8 is connected with the security PC section 7 through a diesel generator outlet breaker 01DL9 and a security section emergency power supply breaker 02DL10, and provides emergency power for the security PC section 7 through the emergency diesel generator 8; the security PC section 7 is connected to the security section load via a security section load breaker XXDL.
The automatic switching device 12 is connected to a safety section load circuit breaker XXDL, an emergency diesel generator 8, a safety section emergency power circuit breaker 02DL10, a diesel generator outlet circuit breaker 01DL9, a safety section standby power circuit breaker 4DL6, a plant power supply section PC II feeder circuit breaker 2DL4, a safety section working power circuit breaker 3DL5, and a plant power supply section PC I feeder circuit breaker 1DL 3.
Referring to fig. 2 to 6, the method for testing the switching performance of the security power system of the power plant according to the present invention comprises the following steps:
1) Performing a preliminary preparation for the switching performance test of the automatic switching device 12;
2) Performing a charge-discharge test of the automatic switching device 12;
the specific operation of the step 2) is as follows:
When the following conditions are satisfied at the same time, the automatic switching device 12 starts charging, and the switching function is opened;
a) The automatic switching device 12 is put into function;
b) The safety section working power circuit breaker 3DL5 is combined, and the safety section standby power circuit breaker 4DL6 and the safety section emergency power circuit breaker 02DL10 are separated simultaneously.
C) The bus corresponding to the safety section working power circuit breaker 3DL5 has voltage;
d) No external latch-up condition.
If any one of the following is satisfied, the automatic switching device 12 discharges and the switching function is blocked;
a) The automatic switching device 12 function exits;
b) After the automatic switching device 12 is operated;
c) The external locking automatic switching device 12 is opened;
d) Manually operating a PC I section 1 of a power supply section for a cutting factory;
e) The safety section emergency power circuit breaker 02DL10 and the safety section emergency power circuit breaker 4DL6 are discharged after being switched on;
f) The guard period operating power circuit breaker 3DL5 fails to discharge upon tripping.
3) Switching test from the working power supply to the standby power supply is carried out;
The test conditions tested in step 3) were: the factory power supply section PC I section feeder circuit breaker 1DL3, the factory power supply section PC II section feeder circuit breaker 2DL4 and the security section working power circuit breaker 3DL5 are in a closing state, and the security section standby power circuit breaker 4DL6, the diesel generator outlet circuit breaker 01DL9 and the security section emergency power circuit breaker 02DL10 are in a breaking state.
The test content and the judgment standard are as follows:
31 Simulating no voltage of the working bus and no current of the working power supply, and starting a switching function by the automatic switching device 12;
Specifically, the automatic switching device 12 is charged, the standby power supply is normal, the safety PC section 7 is out of voltage, the working power supply has no current, the safety section working power supply breaker 3DL5 is disconnected, and the safety section standby power supply breaker 4DL6 is switched on in a delayed manner. The evaluation criteria are: the safety working power circuit breaker 3DL5 is delayed for 1.5s after being disconnected, and the safety standby power circuit breaker 4DL6 is switched on.
32 The safety section operating power circuit breaker 3DL5 is stolen and no current flows, and the test automatic switching apparatus 12 starts the switching function.
Specifically, the automatic switching device 12 is charged, the standby power supply is normal, the safety section working power supply breaker 3DL5 is in a switching-off state, the working power supply is free of current, the safety section standby power supply breaker 4DL6 is switched on in a delayed manner, and the judgment standard is as follows: after a delay of 1.5s, the safety section standby power circuit breaker 4DL6 is switched on.
4) And switching the working power supply to the emergency power supply for testing.
The test conditions tested in step 4) were: the factory power supply section PC I section feeder circuit breaker 1DL3, the factory power supply section PC II section feeder circuit breaker 2DL4 and the security section working power circuit breaker 3DL5 are in a closing state, and the security section standby power circuit breaker 4DL6, the diesel generator outlet circuit breaker 01DL9 and the security section emergency power circuit breaker 02DL10 are in a breaking state.
Test content and evaluation criteria:
41 The analog working bus is pressureless and the working power supply is currentless, the test automatic switching device 12 starts the switching function.
Specifically, the automatic switching device 12 is charged, the standby power supply is abnormal, the security PC section 7 is out of voltage, the working power supply has no current, and an emergency diesel generator instruction is started; the evaluation criteria are: the safety section working power circuit breaker 3DL5 is disconnected, and then the time is delayed for 1.5s, and the emergency diesel generator 8 is started.
42 The safety section operating power circuit breaker 3DL5 is split and no current, the test automatic switching device 12 starts the switching function.
Specifically, the automatic switching device 12 is charged completely, the standby power supply is abnormal, the safety section working power supply breaker 3DL5 is in a switching-off state, the working power supply has no current, the emergency diesel generator 8 is started, and an instruction for starting the emergency diesel generator is delayed; the evaluation criteria are: and (5) delaying for 1.5 seconds, and starting the emergency diesel generator 8.
5) The working power supply is switched to the standby power supply, and then the switching test of the emergency diesel generator 8 is tested.
The test conditions tested in step 5) were: when the power supply device is normally operated before switching, the power supply section PC I feeder circuit breaker 1DL3, the power supply section PC II feeder circuit breaker 2DL4 and the safety section working power circuit breaker 3DL5 are in a closing state, and the safety section standby power circuit breaker 4DL6, the diesel generator outlet circuit breaker 01DL9 and the safety section emergency power circuit breaker 02DL10 are in a breaking state.
Test content and evaluation criteria:
51 The analog working bus is pressureless and the working power supply is currentless, and the start-up switching function of the automatic switching device 12 is tested.
Specifically, the automatic switching device 12 is charged, the standby power supply is normal, the safety PC section 7 is out of voltage, the working power supply is free of current, the safety section standby power supply breaker 4DL6 is switched on in a delayed manner, the safety section standby power supply breaker 4DL6 is switched off, and the emergency diesel generator 8 is started; the evaluation criteria are: the safety section working power circuit breaker 3DL5 is disconnected, after 1.5s of delay, the safety section standby power circuit breaker 4DL6 is closed, the safety PC section 7 is out of voltage, the delay is disconnected the safety section standby power circuit breaker 4DL6, and the emergency diesel generator 8 is started.
52 The analog working bus is pressureless and the working power supply is currentless, and the start-up switching function of the automatic switching device 12 is tested.
Specifically, the charging is completed, the standby power supply is normal, the safety PC section 7 is out of voltage, the working power supply is free of current, the safety section standby power supply breaker 4DL6 is closed, and the emergency diesel generator 8 is started; the evaluation criteria are: and (5) delaying for 1.5 seconds, and starting the emergency diesel generator 8.
53 The safety section operating power circuit breaker 3DL5 is split and no current, the test automatic switching device 12 starts the switching function.
Specifically, the automatic switching device 12 is charged, the standby power supply is normal, the security PC section 7 is out of voltage, the working power supply has no current, the security section standby power supply breaker 4DL6 is switched on in a delayed manner, the security section standby power supply breaker 4DL6 is switched off, and the emergency diesel generator 8 is started; the evaluation criteria are: the safety section working power circuit breaker 3DL5 is disconnected, after 1.5s of delay, the safety section standby power circuit breaker 4DL6 is closed, the safety PC section 7 is out of voltage, the delay is disconnected the safety section standby power circuit breaker 4DL6, and the emergency diesel generator 8 is started.
54 The safety section operating power circuit breaker 3DL5 is split and no current, the test automatic switching device 12 starts the switching function.
Specifically, the charging is completed, the standby power supply is normal, the security PC section 7 is out of voltage, the working power supply has no current, and the emergency diesel generator 8 is started; the evaluation criteria are: and (5) delaying for 1.5 seconds, and starting the emergency diesel generator 8.
The specific operation of the step 1) is as follows:
The test scheme meeting the switching function of the automatic switching device 12 is formulated to be in line with the field reality, the accident safety section is not loaded, the emergency diesel generator 8 is provided with a self-starting condition, the diesel generator outlet breaker 01DL9 and the safety section emergency power circuit breaker 02DL10 are positioned at test positions, a working power supply is available, and the power supply section PC I section feeder circuit breaker 1DL3 and the safety section working power circuit breaker 3DL5 are positioned at working positions. The emergency diesel generator 8 is available, the factory power supply section PC II section feeder circuit breaker 2DL4 is located in a working position, and the security section standby power circuit breaker 4DL6 is located in a test position.
The invention is suitable for a power plant security power system with a security section configured with a diesel generator.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (2)
1. The switching performance test system for the safety power supply system of the power plant is characterized by comprising a power supply section PCI section (1) for the power plant, a power supply section PCII section (2) for the power plant, a feeder circuit breaker 1DL (3) for the power supply section PCI section for the power plant, a feeder circuit breaker 2DL (4) for the power supply section PC II section for the power plant, a working power circuit breaker 3DL (5) for the safety section, a standby power circuit breaker 4DL (6) for the safety section, a safety PC section (7), an emergency diesel generator (8), a diesel generator outlet circuit breaker 01DL (9), a emergency power circuit breaker 02DL (10) for the safety section, a load circuit breaker XXDL (11) for the safety section and an automatic switching device (12);
The power supply section PCI section (1) of the factory is connected with the working power supply breaker 3DL (5) of the security section through the power supply section PCI section feeder breaker 1DL (3) of the factory and the security PC section (7), and the working power supply is provided for the security PC section (7) through the power supply section PCI section (1) of the factory; the power supply section PCII section (2) of the factory is connected with the safety PC section (7) through the feeder circuit breaker 2DL (4) of the PC section II of the factory and the standby power circuit breaker 4DL (6) of the safety section, and the standby power is provided for the safety PC section (7) through the power supply section PCII section (2) of the factory; the emergency diesel generator (8) is connected with the security PC section (7) through a diesel generator outlet breaker 01DL (9) and a security section emergency power supply breaker 02DL (10), and provides emergency power for the security PC section (7) through the emergency diesel generator (8); the security PC section (7) is connected with the security section load through a security section load breaker XXDL (11);
The automatic switching device (12) is connected with a safety section load circuit breaker XXDL (11), an emergency diesel generator (8), a safety section emergency power circuit breaker 02DL (10), a diesel generator outlet circuit breaker 01DL (9), a safety section standby power circuit breaker 4DL (6), a plant power supply section PCII section feeder circuit breaker 2DL (4), a safety section working power circuit breaker 3DL (5) and a plant power supply section PCI section feeder circuit breaker 1DL (3).
2. The switching performance test method for the security power supply system of the power plant is characterized by comprising the following steps of:
1) Performing a preliminary preparation of a switching performance test of the automatic switching device (12);
2) Performing a charge-discharge test of the automatic switching device (12);
3) Switching test from the working power supply to the standby power supply is carried out;
4) Switching test from the working power supply to the emergency power supply is carried out;
5) Switching test from the working power supply to the standby power supply is carried out, and switching test of the emergency diesel generator (8) is tested;
the specific operation of the step 2) is as follows:
When the following conditions are met at the same time, the automatic switching device (12) starts charging, and the switching function is opened;
31a) The function input of the automatic switching device (12);
31b) The safety section working power circuit breaker 3DL (5) is combined, and the safety section standby power circuit breaker 4DL (6) and the safety section emergency power circuit breaker 02DL (10) are separated at the same time;
31c) The bus corresponding to the safety section working power circuit breaker 3DL (5) has voltage;
31d) No external lockout condition;
If any one of the following is satisfied, the automatic switching device (12) discharges, and the switching function is blocked;
32a) The automatic switching device (12) exits the function;
32b) After the automatic switching device (12) acts;
32c) The external locking automatic switching device (12) is provided with an opening;
32d) Manually operating the PCI section (1) of the power supply section for the cutting factory;
32e) The safety section emergency power circuit breaker 02DL (10) and the safety section emergency power circuit breaker 4DL (6) are discharged after being switched on;
32f) The safety section working power circuit breaker 3DL (5) fails to discharge after tripping;
The test conditions tested in step 3) were: the power supply section PCI section feeder circuit breaker 1DL (3) of the factory, the power supply section PCII section feeder circuit breaker 2DL (4) of the factory and the safety section working power circuit breaker 3DL (5) are in a closing state, and the safety section standby power circuit breaker 4DL (6), the diesel generator outlet circuit breaker 01DL (9) and the safety section emergency power circuit breaker 02DL (10) are in a breaking state;
The test content and the judgment standard are as follows:
31 Simulating no voltage of the working bus and no current of the working power supply, and testing the automatic switching device (12) to start the switching function;
Specifically, the automatic switching device (12) is charged, the standby power supply is normal, the safety PC section (7) is in voltage loss, the working power supply is free of current, the safety section working power supply breaker 3DL (5) is broken, and the safety section standby power supply breaker 4DL (6) is switched on in a delayed manner; the evaluation criteria are: the safety section working power circuit breaker 3DL (5) is delayed for 1.5s after breaking, and the safety section standby power circuit breaker 4DL (6) is switched on;
32 The safety section working power circuit breaker 3DL (5) is in stealing and tripping without current, and the automatic switching device (12) is tested to start the switching function;
Specifically, the automatic switching device (12) is charged, the standby power supply is normal, the safety section working power supply breaker 3DL (5) is in a switching-off state, the working power supply is free of current, the safety section standby power supply breaker 4DL (6) is switched on in a delayed mode, and the judgment standard is as follows: after the time delay is 1.5s, the safety section standby power circuit breaker 4DL (6) is switched on;
The test conditions tested in step 4) were: the power supply section PCI section feeder circuit breaker 1DL (3) of the factory, the power supply section PCII section feeder circuit breaker 2DL (4) of the factory and the safety section working power circuit breaker 3DL (5) are in a closing state, and the safety section standby power circuit breaker 4DL (6), the diesel generator outlet circuit breaker 01DL (9) and the safety section emergency power circuit breaker 02DL (10) are in a breaking state;
Test content and evaluation criteria:
41 Simulating no voltage of the working bus and no current of the working power supply, and testing the automatic switching device (12) to start the switching function;
specifically, the automatic switching device (12) is charged, the standby power supply is abnormal, the security PC section (7) is out of voltage, the working power supply has no current, and an emergency diesel generator instruction is started; the evaluation criteria are: the safety section working power circuit breaker 3DL (5) is disconnected, and then the time is delayed for 1.5 seconds, and an emergency diesel generator (8) is started;
42 The safety section working power circuit breaker 3DL (5) is split and has no current, and the test automatic switching device (12) starts the switching function;
specifically, the automatic switching device (12) is charged completely, the standby power supply is abnormal, the safety section working power supply breaker 3DL (5) is in a switching-off state, the working power supply has no current, the emergency diesel generator (8) is started, and an emergency diesel generator instruction is started in a delayed manner; the evaluation criteria are: the time delay is 1.5s, and an emergency diesel generator (8) is started;
The test conditions tested in step 5) were: when the power supply device normally operates before switching, the PCI section feeder circuit breaker 1DL (3) of the power supply section of the factory, the PC II section feeder circuit breaker 2DL (4) of the power supply section of the factory and the working power circuit breaker 3DL (5) of the security section are in a closing state, and the standby power circuit breaker 4DL (6) of the security section, the outlet circuit breaker 01DL (9) of the diesel generator and the emergency power circuit breaker 02DL (10) of the security section are in a breaking state;
Test content and evaluation criteria:
51 Simulating no voltage of the working bus and no current of the working power supply, and testing the starting and switching functions of the automatic switching device (12);
Specifically, the automatic switching device (12) is charged, the standby power supply is normal, the safety PC section (7) is out of voltage, the working power supply is free of current, the safety section standby power supply breaker 4DL (6) is switched on in a delayed manner, the safety section standby power supply breaker 4DL (6) is switched off, and the emergency diesel generator (8) is started; the evaluation criteria are: the safety section working power supply breaker 3DL (5) is disconnected, after 1.5s of delay, the safety section standby power supply breaker 4DL (6) is switched on, the safety PC section (7) is in voltage loss, the delay is disconnected, the safety section standby power supply breaker 4DL (6) is disconnected, and the emergency diesel generator (8) is started;
52 Simulating no voltage of the working bus and no current of the working power supply, and testing the starting and switching functions of the automatic switching device (12);
Specifically, the charging is completed, the standby power supply is normal, the safety PC section (7) is out of voltage, the working power supply is free of current, the safety section standby power supply breaker 4DL (6) is closed refused, and the emergency diesel generator (8) is started; the evaluation criteria are: the time delay is 1.5s, and an emergency diesel generator (8) is started;
53 The safety section working power circuit breaker 3DL (5) is split and has no current, and the test automatic switching device (12) starts the switching function;
Specifically, the automatic switching device (12) is charged, the standby power supply is normal, the safety PC section (7) is out of voltage, the working power supply is free of current, the safety section standby power supply breaker 4DL (6) is switched on in a delayed manner, the safety section standby power supply breaker 4DL (6) is switched off, and the emergency diesel generator (8) is started; the evaluation criteria are: the safety section working power supply breaker 3DL (5) is disconnected, after 1.5s of delay, the safety section standby power supply breaker 4DL (6) is switched on, the safety PC section (7) is in voltage loss, the delay is disconnected, the safety section standby power supply breaker 4DL (6) is disconnected, and the emergency diesel generator (8) is started;
54 The safety section working power circuit breaker 3DL (5) is split and has no current, and the test automatic switching device (12) starts the switching function;
Specifically, the charging is completed, the standby power supply is normal, the security PC section (7) is out of voltage, the working power supply has no current, and the emergency diesel generator (8) is started; the evaluation criteria are: and (3) delaying for 1.5s, and starting the emergency diesel generator (8).
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| CN102237711A (en) * | 2010-04-29 | 2011-11-09 | 上海宝钢化工有限公司 | Standby power switching device and power failure judgment method thereof |
| CN109283472A (en) * | 2018-09-18 | 2019-01-29 | 四川创宏电气有限公司 | Intelligent test system and test method for power supply equipment |
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| CN101719688B (en) * | 2009-12-18 | 2011-10-05 | 江苏金智科技股份有限公司 | Starting method for industrial enterprise power supply rapid switching device based on power direction |
| WO2012061200A2 (en) * | 2010-11-02 | 2012-05-10 | Schneider Electric USA, Inc. | Automated emergency power supply test |
| US8433531B2 (en) * | 2010-11-02 | 2013-04-30 | Schneider Electric USA, Inc. | Automated emergency power supply test featuring user selection of load percentage or exhaust temperature |
| CN208890467U (en) * | 2018-06-25 | 2019-05-21 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of thermal power plant security personnel three power supply of section switching wiring construction |
| JP7118915B2 (en) * | 2019-03-15 | 2022-08-16 | 株式会社東芝 | Emergency power supply equipment for nuclear power plant, its control method, and control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102237711A (en) * | 2010-04-29 | 2011-11-09 | 上海宝钢化工有限公司 | Standby power switching device and power failure judgment method thereof |
| CN109283472A (en) * | 2018-09-18 | 2019-01-29 | 四川创宏电气有限公司 | Intelligent test system and test method for power supply equipment |
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