CN106814278A - Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods - Google Patents
Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods Download PDFInfo
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- CN106814278A CN106814278A CN201710092474.7A CN201710092474A CN106814278A CN 106814278 A CN106814278 A CN 106814278A CN 201710092474 A CN201710092474 A CN 201710092474A CN 106814278 A CN106814278 A CN 106814278A
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- current
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- electric current
- secondary current
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods, be for take out can height resist before operation, by being tested, it is ensured that the method for inspection technical field of primary circuit and secondary current circuit connection correctness.Site Detection and determination methods provide one kind and can be tested to taking out energy anti-primary circuit high and secondary current loop, find a misconnection, and the leakage of secondary current loop is wrong, open circuit situation；To the inspection of primary circuit and electric current secondary loop more fully；Simple and convenient, workload is few；The validity of inspection, reliability are high.By the measurement to secondary terminals electrical quantity, the exchange primary circuit of inspection transformer station and the correctness in secondary current loop, the characteristics of with simplicity, efficiency high, good effect, so as to safeguard the safe and stable operation of power network.
Description
Technical field
The invention belongs to electrotechnics, particularly resist before operation for taking out energy height, by being tested, it is ensured that once return
Road and the method for inspection technical field of secondary current circuit connection correctness.
Background technology
Take out can high anti-be power Transmission visual plant, its primary circuit and secondary current loop whether correctness, it will
The safety and stability of power network is had influence on, the normal offer of electric power and the normal life of people are provided.Primary circuit and secondary current are returned
The mistake on road can influence the adverse consequences such as the correct operation of electric grid relay protection.
500kV stations 500kV circuits are gone into operation, circuit take out can it is high it is anti-burn, check find cause of accident be producer once
Circuit connection mistake, secondary current loop is defective.Repair in shop reason is returned, seriously delays circuit operation.Result in serious economic effect
Benefit loss and bad social influence.
Generally, although take out can SC once and in secondary connection high anti-, also there is no wiring error unavoidably.Cause
This, how before energy anti-powered operation high is taken out, should be found and solution by the inspection of experiment by the objective test data of science
Primary circuit and secondary current circuit connection Problem-Error, it is ensured that install correct, have important to the safe and stable operation of power network
Meaning.
The content of the invention
The present invention is precisely in order to overcome the defect and problem that above-mentioned prior art is present, and provide one kind high can resist to taking out
Primary circuit and secondary current loop are tested, and find a misconnection, and the leakage of secondary current loop is wrong, open circuit situation；To one
The inspection of minor loop and electric current secondary loop is more fully；Simple and convenient, workload is few；The validity of inspection, reliability are high.
The present invention is achieved by the following technical solution.
Before energy anti-powered operation high is taken out, using the following steps：
, be grounded for three-phase shortcircuit energy anti-energy winding side of taking out high is taken out by the first step；
Second step, the A phase, B phase, C phase at the high-pressure side sleeve position 1 of plant stand high pressure reactance adds symmetrical three-phase adjustable electric
Source, close experiment air switch, increases test voltage elevated currents, and electric current flows through anti-high-pressure side casing current transformer high
CT1, flows through anti-winding high, flows through anti-low-pressure side casing current transformer CT2 high, flows to anti-neutral point high；Can winding taking out
Sensing produces electric current, and electric current flows through takes out energy winding side Current Transmit 3, flows to and takes out energy winding side three-phase shortcircuit earth point；Electricity
After current transformer once-through electric current, alternating current, alternating current is produced to pass through cable connection in secondary winding in current transformer
Loop flows to current transformer terminal box on the spot, and terminal box flows to relay protection, measurement, the exchange of measuring screen cabinet by cable connection
Current terminal；Using error less than or equal to 0.5%, voltage resolution be 0.001V, current resolution be 0.0001A, in electric current
The high-resolution clamp-on type instrument of phase angle measurement is carried out for 0.0003A, use the test voltage of unified fixation for reference to
Amount, is detected to test voltage, an electric current, and related screen, case secondary current terminal, obtains test data；
3rd step, the secondary current amplitude and phase that detect, and the amplitude and phase that utility theory calculates electric current,
The error calculation of measured data and calculated value is carried out, when amplitude error is less than or equal to 10% and phase angle error is less than or equal to 10
Degree, then judge exchange once and secondary circuit be correct, otherwise judges exchange once and secondary circuit has problem.
Beneficial effects of the present invention are, by the measurement to secondary terminals electrical quantity, check the exchange of transformer station once to return
Road and the correctness in secondary current loop, the characteristics of with simplicity, efficiency high, good effect, so as to safeguard the safety and stability of power network
Operation.
Below in conjunction with the accompanying drawings and example the present invention will be further described.
Brief description of the drawings
Fig. 1 is primary connection schematic diagram of the present invention；
Fig. 2 is secondary connection detects schematic diagram of the present invention.
Specific embodiment
Fig. 1, Fig. 2 are seen, before energy anti-powered operation high is taken out, using the following steps：
, be grounded for three-phase shortcircuit energy anti-energy winding side of taking out high is taken out by the first step；
Second step, the A phase, B phase, C phase at the high-pressure side sleeve position 1 of plant stand high pressure reactance adds symmetrical three-phase adjustable electric
Source, close experiment air switch, increases test voltage elevated currents, and electric current flows through anti-high-pressure side casing current transformer high
CT1, flows through anti-winding high, flows through anti-low-pressure side casing current transformer CT2 high, flows to anti-neutral point high；Can winding taking out
Sensing produces electric current, and electric current flows through takes out energy winding side Current Transmit 3, flows to and takes out energy winding side three-phase shortcircuit earth point；Electricity
After current transformer once-through electric current, alternating current, alternating current is produced to pass through cable connection in secondary winding in current transformer
Loop flows to current transformer terminal box on the spot, and terminal box flows to relay protection, measurement, the exchange of measuring screen cabinet by cable connection
Current terminal；Using error less than or equal to 0.5%, voltage resolution be 0.001V, current resolution be 0.0001A, in electric current
The high-resolution clamp-on type instrument of phase angle measurement is carried out for 0.0003A, use the test voltage of unified fixation for reference to
Amount, is detected to test voltage, an electric current, and related screen, case secondary current terminal, obtains test data；
3rd step, the secondary current amplitude and phase that detect, and the amplitude and phase that utility theory calculates electric current,
The error calculation of measured data and calculated value is carried out, when amplitude error is less than or equal to 10% and phase angle error is less than or equal to 10
Degree, then judge exchange once and secondary circuit be correct, otherwise judges exchange once and secondary circuit has problem.
Claims (1)
1. plant stand take out can it is high anti-once and the detection of secondary current loop and determination methods, it is characterised in that time point is taking out can be high
Before resisting powered operation, step is：
, be grounded for three-phase shortcircuit energy anti-energy winding side of taking out high is taken out by the first step；
Second step, the A phase, B phase, C phase at the high-pressure side sleeve position 1 of plant stand high pressure reactance adds symmetrical three-phase regulated power supply,
Close experiment air switch, increases test voltage elevated currents, and electric current flows through anti-high-pressure side casing current transformer CT1 high,
Anti- winding high is flowed through, anti-low-pressure side casing current transformer CT2 high is flowed through, anti-neutral point high is flowed to；Can winding sensing taking out
Electric current is produced, electric current flows through takes out energy winding side Current Transmit 3, flows to and takes out energy winding side three-phase shortcircuit earth point；Electric current is mutual
After sensor once-through electric current, alternating current, alternating current is produced to pass through cable connection loop in secondary winding in current transformer
Current transformer terminal box on the spot is flowed to, terminal box flows to relay protection, measurement, measuring screen cabinet alternating current by cable connection
Terminal；0.5%, voltage resolution is less than or equal to for 0.001V, current resolution are 0.0001A, are in electric current using error
0.0003A carries out the high-resolution clamp-on type instrument of phase angle measurement, and the test voltage for using unified fixation is reference vector,
Test voltage, an electric current, and related screen, case secondary current terminal are detected, test data is obtained；
3rd step, the secondary current amplitude and phase that detect, amplitude and phase with utility theory calculates electric current are carried out
The error calculation of measured data and calculated value, when amplitude error is less than or equal to 10% and phase angle error is less than or equal to 10 degree, then
Judge exchange once and secondary circuit is correct, otherwise judge exchange once and secondary circuit has problem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092474.7A CN106814278A (en) | 2017-02-21 | 2017-02-21 | Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092474.7A CN106814278A (en) | 2017-02-21 | 2017-02-21 | Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106814278A true CN106814278A (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710092474.7A Pending CN106814278A (en) | 2017-02-21 | 2017-02-21 | Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods |
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| CN (1) | CN106814278A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044820A (en) * | 2019-12-19 | 2020-04-21 | 深圳供电局有限公司 | Transformer substation intelligent secondary interface fault removing device and method |
| CN114236432A (en) * | 2021-12-17 | 2022-03-25 | 中国十七冶集团有限公司 | Method for rapidly checking wiring correctness of voltage transformer by using relay protection tester |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251569A (en) * | 2008-04-01 | 2008-08-27 | 山东电力研究院 | Method for testing electric secondary AC loop |
| CN102565618A (en) * | 2012-01-31 | 2012-07-11 | 云南电网公司 | Method for detecting zero-sequence voltage circuit of transformer substation |
| CN102608485A (en) * | 2012-03-23 | 2012-07-25 | 云南电网公司 | Detection method for zero-sequence current loops of transformer substations |
| CN202548258U (en) * | 2012-03-28 | 2012-11-21 | 云南电网公司 | Device for checking alternating current/voltage loop |
| CN103605015A (en) * | 2013-10-24 | 2014-02-26 | 西安欣东源电气有限公司 | Device and method for high-precision electric parameter measurement dry-type reactor online monitoring |
| CN205335830U (en) * | 2015-12-24 | 2016-06-22 | 章则明 | Device of volitional check short -circuit fault electric current among AC electric network |
| RU2592253C1 (en) * | 2015-05-27 | 2016-07-20 | Илья Николаевич Джус | Device for testing controlled shunting reactor |
-
2017
- 2017-02-21 CN CN201710092474.7A patent/CN106814278A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251569A (en) * | 2008-04-01 | 2008-08-27 | 山东电力研究院 | Method for testing electric secondary AC loop |
| CN102565618A (en) * | 2012-01-31 | 2012-07-11 | 云南电网公司 | Method for detecting zero-sequence voltage circuit of transformer substation |
| CN102608485A (en) * | 2012-03-23 | 2012-07-25 | 云南电网公司 | Detection method for zero-sequence current loops of transformer substations |
| CN202548258U (en) * | 2012-03-28 | 2012-11-21 | 云南电网公司 | Device for checking alternating current/voltage loop |
| CN103605015A (en) * | 2013-10-24 | 2014-02-26 | 西安欣东源电气有限公司 | Device and method for high-precision electric parameter measurement dry-type reactor online monitoring |
| RU2592253C1 (en) * | 2015-05-27 | 2016-07-20 | Илья Николаевич Джус | Device for testing controlled shunting reactor |
| CN205335830U (en) * | 2015-12-24 | 2016-06-22 | 章则明 | Device of volitional check short -circuit fault electric current among AC electric network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044820A (en) * | 2019-12-19 | 2020-04-21 | 深圳供电局有限公司 | Transformer substation intelligent secondary interface fault removing device and method |
| CN114236432A (en) * | 2021-12-17 | 2022-03-25 | 中国十七冶集团有限公司 | Method for rapidly checking wiring correctness of voltage transformer by using relay protection tester |
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Application publication date: 20170609 |
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