CN102565614A - Alternating voltage loop test method - Google Patents
Alternating voltage loop test method Download PDFInfo
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- CN102565614A CN102565614A CN2012100072922A CN201210007292A CN102565614A CN 102565614 A CN102565614 A CN 102565614A CN 2012100072922 A CN2012100072922 A CN 2012100072922A CN 201210007292 A CN201210007292 A CN 201210007292A CN 102565614 A CN102565614 A CN 102565614A
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Abstract
Disclosed is an alternating voltage loop test method. Firstly, alternating current is led to each section of bus bars on one side and voltage mutual inductors on each section of bus bars; secondly, current is led to main transformers and the voltage mutual inductors on each side; and thirdly, current is led to each section of bus bars on other sides and the voltage mutual inductors on bus bars. The voltage mutual inductors generate secondarily alternating voltage after the voltage mutual inductors are electrified, the alternating voltage leads current to a terminal box of the voltage mutual inductors through a cable wiring loop, the terminal box leads current to alternating current voltage terminals of relay protection cabinets, telecontrol cabinets, measuring cabinets, metering cabinets and the like through cable wirings, a high resolution voltage measuring instrument is used for detecting voltage terminals of cabinet cases, and test data are obtained. The method has the advantages that primary equipment and wires which are in a missing or wrong connection state can be checked and found; check is complete; equipment and materials are simple and convenient and workload is light; and check is more effective and reliable.
Description
Technical field
The invention belongs to electrical technology field.Be used in particular for transformer station before operation, the alternating voltage of secondary screen cabinet terminal is detected in the approximate simulation primary circuit under electriferous state, guarantee the method for circuit connection correctness.
Background technology
Electric power has become the indispensable necessity for life of people, and transformer station is the important step that electric power is carried, and the correctness of its ac voltage circuit will have influence on the safety and stability of electrical network, electric power the normal life with people normally is provided.Except the misoperation that the protective relaying device problem causes, most protection malfunctions mainly are that ac circuit goes wrong, and influence the correct operation of electric grid relay protection.The ac voltage circuit system is an important component part in the grid power system, mainly comprises once part and Secondary Part.Once part comprises: bus, connection lead, disconnector, isolating switch, main-transformer, voltage transformer (VT).Secondary Part comprises: voltage transformer secondary winding and binding post, the cable connection between terminal box, indoor secondary screen cabinet and connection device and screen cabinet is formed on the spot.Before the charged operation of transformer station; Be now adopt voltage transformer (VT) on the spot terminal box rise the method for inspection of secondary voltage, with reference to figure 2, after the transformer station loop connects; Off voltage mutual inductor side loop; Use pressure regulator equipment, voltage transformer (VT) on the spot terminal box add secondary voltage to screen cabinet side secondary circuit.In the pulpit, measure screen cabinet voltage terminal voltage with multimeter.This method can only be checked the voltage circuit that from the terminal box to the pulpit, shields cabinet.Once to secondary, there is obviously inspection dead angle in Secondary Winding coil, and can not check to the terminal box loop from mutual inductor secondary connection post and to obtain from voltage transformer (VT).If at the voltage transformer (VT) binding post short circuit is arranged, once charged possibility will cause voltage transformer (VT) to burn.Once just took place owing to short circuit is arranged, when once charged, burnt out the accident of voltage transformer (VT) at the secondary connection post of voltage transformer (VT).On the one hand, terminal box rises the method for secondary voltage in addition, and boost in the loop one by one, and testing equipment is heavy, repeatedly carry, and workload is big, makes troubles to field test.
Summary of the invention
Under such technical background, the problem that exists for solving, the present invention provide a kind of can to transformer station's alternating voltage once, the connection of secondary circuit checks, find to leak, the wrong primary equipment that connects and lead and the wiring of secondary screen cabinet case; Inspection to the alternating voltage secondary circuit is more comprehensive; Simple and convenient, workload is few; The higher method of inspection of validity, reliability of inspection.
The present invention adopts following technical scheme to realize.
The present invention is characterised in that; Before the charged operation of transformer station, simulate a side, i.e. medium-pressure or high pressure/low-pressure side charging test that electrical verification is pressed of once adding an examination of at main transformer; Through operating isolation switch and isolating switch; Make trial voltage charged according to following program: the phase one, take alternating current to each section of this side bus, and the voltage transformer (VT) on each section bus; Subordinate phase, charged to each main-transformer (referring to has the main transformer more than two), and the voltage transformer (VT) of each side; Phase III, charged each section bus, and the voltage transformer (VT) on the bus to other side; After voltage transformer (VT) is charged; Voltage transformer secondary produces alternating voltage; Alternating voltage is charged to the voltage transformer (VT) terminal box through the cable connection loop, and terminal box is charged to screen cabinet alternating voltage terminals such as relay protection, telemechanical, measurement, meterings through cable connection; In the charged process of each voltage transformer (VT); Utilize high-resolution voltage measuring instrument, detect at measurement point 1, measurement point 2, screen cabinet case voltage terminal is detected with reference to figure 2; Obtain test figure, judge the correctness of ac voltage circuit wiring through numerical value.
The present invention each electric pressure three windings or double winding transformer station adopt once additional examination to test voltage method, take electricity to this side bus and voltage transformer (VT), take electricity to main-transformer and voltage transformer (VT) thereof, take electricity to other side bus and voltage transformer (VT); Detect voltage at secondary screen cabinet case voltage terminal, detect at measurement point 1, measurement point 2 with reference to figure 2.Judge the correctness of ac voltage circuit through voltage value.
The present invention compares with existing secondary booster test, and this method has following advantage:
(1) can check the connection of transformer station alternating voltage primary circuit, find leakage, wrong primary equipment and the lead that connects.
(2) more comprehensive to the inspection of alternating voltage secondary circuit.Voltage transformer secondary winding, Secondary Winding binding post, secondary connection post are to the wiring of terminal box on the spot, and terminal box all can both be checked to obtain to secondary screen cabinet terminal connections on the spot.
(3) this method device therefor material is simple and convenient, and workload is few.Once charged back all voltage secondary circuit all can be detected the voltage secondary circuit according to charged process.Do not need with the pressure regulator repeated multiple times different secondary voltage circuits to be boosted, reduced workload and test period at secondary.
(4) this method more near the state of transformer station's charging operation, is checked the no-load voltage ratio situation of ac voltage circuit.Validity, the reliability of inspection are higher.If there are false wiring problems such as second short circuit, can not cause device damage yet, find the mistakes and omissions wiring after, have ample time and search and handle problems.
Below in conjunction with accompanying drawing 1, accompanying drawing 2 and embodiment the present invention is further specified.
Description of drawings
Fig. 1 is an alternating voltage primary circuit wiring schematic diagram;
Fig. 2 is an alternating voltage secondary circuit wiring schematic diagram.
Embodiment
The ac voltage circuit method of inspection; The present invention simulates the side at main transformer before the charged operation of transformer station, i.e. medium-pressure or high pressure/low-pressure side charging test that electrical verification is pressed of once adding an examination of; Through operating isolation switch and isolating switch; Make trial voltage charged according to following program: the phase one, take alternating current to each section of this side bus, and the voltage transformer (VT) on each section bus; Subordinate phase, charged to each main-transformer, and the voltage transformer (VT) of each side; Phase III, charged each section bus, and the voltage transformer (VT) on the bus to other side; After voltage transformer (VT) is charged; Voltage transformer secondary produces alternating voltage; Alternating voltage is charged to the voltage transformer (VT) terminal box through the cable connection loop, and terminal box is charged to screen cabinet alternating voltage terminals such as relay protection, telemechanical, measurement, meterings through cable connection; In the charged process of each voltage transformer (VT), utilize high-resolution voltage measuring instrument, screen cabinet case voltage terminal is detected, obtain test figure.
The present invention each electric pressure three windings or double winding transformer station adopt once additional examination to test voltage method, take electricity to this side bus and voltage transformer (VT), take electricity to main-transformer and voltage transformer (VT) thereof, take electricity to other side bus and voltage transformer (VT); Detect voltage at secondary screen cabinet case voltage terminal, obtain voltage value.
Embodiment is an example with the 220kV transformer station of three kinds of electric pressures, sets forth concrete implementation process.
See Fig. 1, through in the 110kV of transformer station side once, add three symmetrical positive phase sequence 380V trial voltages, operation isolation switch and isolating switch make trial voltage charged according to following program: one, the charged 110kV bus that arrives reaches and voltage transformer (VT); Two, charged to main transformer and voltage transformer (VT) thereof; Three, charged to medium voltage side 220kV bus and mutual inductor thereof; Four, charged to low-pressure side 35kV bus and voltage transformer (VT) thereof; In charged process,, detect magnitude of voltage at each screen cabinet case secondary voltage terminal synchronously with reference to figure 2; Through analyzing, can judge to draw the voltage circuit correctness to detecting data.
The condition that possesses: the substation project civil engineering is all accomplished, electric once, the secondary installing work of debugging before the charged operation accomplishes, all outlet septal line trackside isolation switch break off.Stand inner breaker, isolation switch breaks off.380V three-phase test power supply is arranged.
The required major equipment material of testing has: one in the high accuracy number multimeter of measuring voltage, 2 of three-way four line power leads, one of the three-phase air switch of control power supply.
1. test procedure
With reference to figure 1, dotted portion is the test connection synoptic diagram, and solid line is the transforming plant primary wiring schematic diagram, and experiment power supply is a 380V three-phase positive phase sequence power supply.
Step 1,110kV I section bus is charged
With reference to figure 1, the test air switch that closes, the 110kV outlet of closing is the female disconnector of I at interval; The female voltage transformer (VT) disconnector of the I of closing; The outlet of closing is isolating switch at interval, makes the female voltage transformer (VT) of 110kV I section bus and I charged, each relevant screen cabinet is carried out secondary voltage detect.Carry out next step operation after the data that record are normal.
Step 2,110kV II section bus is charged
With reference to figure 1; The female female disconnector of I, the female disconnector of II at interval of joining of the 110kV that closes, the female voltage transformer (VT) disconnector of the II of closing, female isolating switch at interval that joins closes; Make 110kV II section bus and II section bus-bar potential transformer charged, each relevant screen cabinet is carried out secondary voltage detect.Carry out next step operation after the data that record are normal.
Step 3, main transformer is charged
With reference to figure 1; The main transformer 110kV side of closing is disconnector at interval, and the main transformer 110kV side of closing is I section bus isolating switch at interval, and the main transformer 110kV side of closing is isolating switch at interval; Make the 220kV main transformer charged; Main transformer 110kV side voltage transformer (VT), 220kV side voltage transformer (VT) mutual inductor are charged, carry out secondary data and detect, and carry out next step operation after the data that record are normal.
Step 4,220kV I section bus is charged
With reference to figure 1; The main transformer 220kV side of closing is disconnector at interval; The main transformer 220kV side of closing is the female disconnector of I at interval, the female voltage transformer (VT) disconnector of the main transformer 220kV I of closing, and the main transformer 220kV side of closing is isolating switch at interval; Make the female voltage transformer (VT) of 220kV I section bus and I charged, each relevant screen cabinet is carried out secondary voltage detect.Carry out next step operation after the data that record are normal.
Step 5,220kV II section bus is charged
With reference to figure 1; The female female disconnector of I, the female disconnector of II at interval of joining of the 220kV that closes, the female voltage transformer (VT) disconnector of the II of closing, the female isolating switch at interval that joins of the 220kV that closes; Make 220kV II section bus and II section bus-bar potential transformer charged, each relevant screen cabinet is carried out secondary voltage detect.Carry out next step operation after the data that record are normal.
Step 6, the 35kV bus is charged
With reference to figure 1; The main transformer 35kV side of closing is disconnector at interval; The main transformer 35kV side of closing is bus isolating switch at interval, the 35kV I of closing section bus-bar potential transformer disconnector, and the main transformer 35kV side of closing is isolating switch at interval; Make 35kV I section bus and bus-bar potential transformer charged, each relevant screen cabinet is carried out secondary voltage detect.The data that record are normal.
2. the determination methods of testing result
Detected voltage data is carried out analysis and judgement.It is basic identical to record A, B, C three-phase voltage numerical value, and AB, BC, CA line magnitude of voltage are basic identical, can judge that the loop is normal.If it is bigger to detect the voltage phase difference of A, B, C, those phase connection existing problems that then differ greatly.
Secondary voltage terminal to screen cabinets such as public observing and controlling, relay protection, failure wave-recordings is measured, and the test figure that measures homophase should equate, is zero or unusual if record magnitude of voltage, can judge that then this circuit connection has problem.
3. other modes of using of this method of inspection
This method also can be added to electricity according to above-mentioned step mode each section bus and the bus-bar potential transformer of this side in the 220kV of 220kV transformer station side; Take electricity to main-transformer and voltage transformer (VT) thereof; Take electricity to each section of 110kV bus and voltage transformer (VT) thereof, take electricity to each section of 35kV bus and voltage transformer (VT) thereof.Detect secondary screen cabinet terminal voltage with multimeter.
Also can press in 35kV side additional examination electrical verification; Be added to electricity according to above-mentioned step mode each section bus and the bus-bar potential transformer of this side; Take electricity to main-transformer and voltage transformer (VT) thereof; Take electricity to each section of 110kV bus and voltage transformer (VT) thereof, take electricity to each section of 220kV bus and voltage transformer (VT) thereof.Detect secondary screen cabinet terminal voltage with multimeter.
4. the applicable scope of this test method
To each electric pressures such as 500kV, 110kV, 35kV, 10kV, two windings or three-winding transformer station can adopt similar approach to test equally; Promptly press in the electrical verification of once adding an examination of; Take electricity to bus and voltage transformer (VT), take electricity to main-transformer, take electricity to other side bus and voltage transformer (VT); Detect at secondary screen cabinet case, detect at measurement point 1, measurement point 2 with reference to figure 2.Judge the correctness of ac voltage circuit through magnitude of voltage.
Claims (2)
1. the ac voltage circuit method of inspection; It is characterized in that: before the charged operation of transformer station, simulate a side, i.e. medium-pressure or high pressure/low-pressure side charging test that electrical verification is pressed of once adding an examination of at main transformer; Through operating isolation switch and isolating switch; Make trial voltage charged according to following program: the phase one, take alternating current to each section of this side bus, and the voltage transformer (VT) on each section bus; Subordinate phase, charged to each main-transformer, and the voltage transformer (VT) of each side; Phase III, charged each section bus, and the voltage transformer (VT) on the bus to other side; After voltage transformer (VT) is charged; Voltage transformer secondary produces alternating voltage; Alternating voltage is charged to the voltage transformer (VT) terminal box through the cable connection loop, and terminal box is charged to screen cabinet alternating voltage terminals such as relay protection, telemechanical, measurement, meterings through cable connection; In the charged process of each voltage transformer (VT), utilize high-resolution voltage measuring instrument, screen cabinet case voltage terminal is detected, obtain test figure.
2. the ac voltage circuit method of inspection according to claim 1; It is characterized in that: each electric pressure three windings or double winding transformer station; Adopt once additional examination to test voltage method; Take electricity to this side bus and voltage transformer (VT), take electricity to main-transformer and voltage transformer (VT) thereof, take electricity to other side bus and voltage transformer (VT); Detect voltage at secondary screen cabinet case voltage terminal, obtain voltage value.
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| CN201210007292.2A CN102565614B (en) | 2012-01-11 | 2012-01-11 | Alternating voltage loop test method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445609A (en) * | 2015-12-01 | 2016-03-30 | 国网河南宜阳县供电公司 | Testing device and method for high voltage supply system loop |
| CN106324329A (en) * | 2016-10-25 | 2017-01-11 | 云南电网有限责任公司电力科学研究院 | Overvoltage self-adapting recognition method and system based on D-dot principle |
| CN113156276A (en) * | 2021-02-22 | 2021-07-23 | 云南建投第二安装工程公司 | Method for checking and debugging secondary voltage loop in AC withstand voltage test of switchgear bus |
| CN114089120A (en) * | 2021-11-25 | 2022-02-25 | 国网陕西省电力公司西咸新区供电公司 | Intelligent substation secondary voltage loop fault diagnosis positioning device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177641Y (en) * | 2008-04-18 | 2009-01-07 | 江苏省电力公司镇江供电公司 | Secondary circuit wiring checking system |
| CN101769980A (en) * | 2008-12-31 | 2010-07-07 | 新疆维吾尔自治区送变电工程公司 | Testing method simulating power transmission debugging |
| CN101881813A (en) * | 2010-06-17 | 2010-11-10 | 国网电力科学研究院 | Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit |
| EP2251702A1 (en) * | 2009-05-05 | 2010-11-17 | SMA Solar Technology AG | Cabling test device |
-
2012
- 2012-01-11 CN CN201210007292.2A patent/CN102565614B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177641Y (en) * | 2008-04-18 | 2009-01-07 | 江苏省电力公司镇江供电公司 | Secondary circuit wiring checking system |
| CN101769980A (en) * | 2008-12-31 | 2010-07-07 | 新疆维吾尔自治区送变电工程公司 | Testing method simulating power transmission debugging |
| EP2251702A1 (en) * | 2009-05-05 | 2010-11-17 | SMA Solar Technology AG | Cabling test device |
| CN101881813A (en) * | 2010-06-17 | 2010-11-10 | 国网电力科学研究院 | Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445609A (en) * | 2015-12-01 | 2016-03-30 | 国网河南宜阳县供电公司 | Testing device and method for high voltage supply system loop |
| CN106324329A (en) * | 2016-10-25 | 2017-01-11 | 云南电网有限责任公司电力科学研究院 | Overvoltage self-adapting recognition method and system based on D-dot principle |
| CN106324329B (en) * | 2016-10-25 | 2023-09-22 | 云南电网有限责任公司电力科学研究院 | Overvoltage self-adaptive identification method and system based on D-dot principle |
| CN113156276A (en) * | 2021-02-22 | 2021-07-23 | 云南建投第二安装工程公司 | Method for checking and debugging secondary voltage loop in AC withstand voltage test of switchgear bus |
| CN113156276B (en) * | 2021-02-22 | 2024-03-29 | 云南建投第二安装工程公司 | Method for checking and debugging secondary voltage loop of bus alternating-current withstand voltage test of switching equipment |
| CN114089120A (en) * | 2021-11-25 | 2022-02-25 | 国网陕西省电力公司西咸新区供电公司 | Intelligent substation secondary voltage loop fault diagnosis positioning device and method |
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