CN202548258U - Device for checking alternating current/voltage loop - Google Patents
Device for checking alternating current/voltage loop Download PDFInfo
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- CN202548258U CN202548258U CN2012201211148U CN201220121114U CN202548258U CN 202548258 U CN202548258 U CN 202548258U CN 2012201211148 U CN2012201211148 U CN 2012201211148U CN 201220121114 U CN201220121114 U CN 201220121114U CN 202548258 U CN202548258 U CN 202548258U
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Abstract
The utility model discloses a device for checking an alternating current/voltage loop. The device comprises a primary current-rising voltage-rising part and a secondary detection part, wherein the primary current-rising voltage-rising part and the secondary detection part transmit data through a wireless signal, so a complete checking device is formed. The device has the advantages that when primarily outputting alternating current/voltage, a transformer station converts the alternating current/voltage into secondary current/voltage through primary current/voltage transformer equipment, the current/voltage accesses a secondary panel through a secondary loop, and by measuring the electrical amount of terminals of the secondary panel, the accuracy of the alternating current/voltage loop of the transformer station is checked. The device has the characteristics of simplicity, convenience, high efficiency and good effect, so a power grid can safely and steadily operate.
Description
Technical field
The utility model belongs to electrotechnics, is the device in check AC current-voltage loop.
Background technology
On June 23rd, 2006, Luoping, 500kV Yunnan becomes the 5122 isolating switchs accident of blasting, and finds it is to cause accident to enlarge because 500kV II section bus protection and seven sieve I loop lines draw the wiring error that connects current transformer in the 5122 isolating switch sleeve pipes after the accident on inspection.
On August 12nd, 2011; Zhenxiong, the Yunnan 1# of power plant machine is under the circuit failure condition; The action of 1# connecting transformer zero sequence differential protection causes stopping accident, and inspection discovery culprit is that the zero sequence CT polarity of connecting transformer public winding connects instead; This is a difficult problem that always perplexs electric system, scrapes the polarity method with conventional battery and can't scrape polarity at all.
At present, lack the standard of relevant AC current-voltage loop field adjustable work, site test work is also lack of standardization.All there is not the complete AC current-voltage in-circuit testing instrument system of function both at home and abroad.The on-the-spot dry cell that mainly utilizes cooperates equipment such as pointer multimeter, cable proofreader device, pincerlike phase meter, relay-protection tester, mutual-inductor tester and strong current generator to accomplish check, lack of complete property and the systematicness of loop individual equipment.
Owing to receive the limitation of specialty, various test units perhaps to secondary device, are only tested to the single equipment element perhaps to primary equipment.Lack whole treat the factory station once, secondary device and between the system concept of relation; For the AC current-voltage circuit system that connects between primary equipment and the secondary device; Lack verifying attachment to the AC current-voltage circuit system; Cause the AC current-voltage loop can not obtain fully, effectively check, thereby cause the generation of some electric power accidents.
Because site test does not have special-purpose verifying attachment; Each site test all will connect the various testing equipments and the instrument of a secondary; Bring great waste to human resources; The correct matching problem of mutual inductor and secondary device is outstanding under different personnel, the distinct methods, does not set up science, objective, automatic checking system.There is the not high problem of test mass in the AC current-voltage loop, so be badly in need of the AC current-voltage in-circuit testing systematic unity standard site test of research and development one cover science.
Through this AC current-voltage in-circuit testing device; The total solution of site test is provided, can accomplishes field test work safely, efficiently, at low cost, unified and standard factory station AC current-voltage in-circuit testing method; For standardized work provides strong guarantee; Guarantee the correctness in current/voltage loop, the reliability service of electrical secondary equipments such as guarantee electric grid relay protection is guaranteed factory's station safe and stable operation.
The utility model content
Under such technical background, for solving the problem of above-mentioned existence, this verifying attachment can to AC current-voltage once, the connection of secondary circuit tests, and finds a no-load voltage ratio problem and an equipment, lead connects and leakage, the wrong problem of the wiring of secondary screen cabinet case; Checkability to the alternating current loop is high, effective, and comprehensive more and system, and security risk is less relatively.
The purpose of the utility model realizes through following technical scheme.
Described AC current-voltage in-circuit testing device comprises AC current-voltage in-circuit testing device, and the utility model comprises that a up-flow boosts partly and the secondary detection part, and it is each other through the transmission of wireless signals data, and it is whole to constitute complete verifying attachment; Wherein:
One time up-flow boosting section branch comprises: power safety, air power switch, three-phase automatic coupling voltage regulator, pressure regulation motor, buck button, voltage table, standard current transformer, current/voltage and phase measuring instrument, Wireless Transmitter, communication interface, power light, wiring of input power source post, out-put supply binding post, earth terminal; Its syndeton is: wiring of input power source post A1, B1, C1 are connected to power safety through the air power switch, and the power safety outlet is connected with three-phase automatic coupling voltage regulator L1, L2, L3, power light, pressure regulation motor respectively; Standard current transformer is passed in the outlet of three-phase automatic coupling voltage regulator, is connected to out-put supply binding post A2, B2, C2, and the outlet of three-phase automatic coupling voltage regulator is connected with voltage table V1, V2, V3, and is connected with current/voltage and phase measuring instrument; The common port X1 of three-phase automatic coupling voltage regulator, X2, X3 receive earth terminal, and are connected with power light, pressure regulation motor, current/voltage and phase measuring instrument respectively after all connecting; The Secondary Winding of standard current transformer is connected to current/voltage and phase measuring instrument, and communication interface is connected to current/voltage and phase measuring instrument, and Wireless Transmitter is connected to current/voltage and phase measuring instrument;
Secondary detection partly comprises: pincerlike phase meter, pincerlike measuring sonde, communication interface, Wireless Transmitter; Its syndeton is: pincerlike measuring sonde is connected with pincerlike phase meter, and pincerlike phase meter is connected with Wireless Transmitter with communication interface respectively.See Fig. 2, dot-and-dash line is transformer station's field apparatus partly, includes casing current transformer and protection screen.
A up-flow boosts and partly carries out various exchanges data with the secondary detection part through wireless transmission; Secondary detection part can collect single test voltage or electric current vector as a reference through wireless transmission, when the current/voltage that carries out the protection screen cabinet detects as unified fixing phase reference.
The beneficial effect of the utility model does; At transforming plant primary output AC electric current (or voltage), transformer station is transformed into secondary current (or voltage) through primary current (or voltage) mutual inductor equipment, inserts secondary screen cabinet to electric current (or voltage) through secondary circuit; Through measurement to secondary screen cabinet terminal electric parameters; The correctness in AC current-voltage loop of check transformer station, have easy, efficient is high, good effectiveness, thereby safeguard the safe and stable operation of electrical network.
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and embodiment the utility model is further specified.
Description of drawings
Fig. 1 is the example structure synoptic diagram of verifying attachment wiring;
Fig. 2 is the example structure synoptic diagram of verifying attachment secondary detection wiring;
Fig. 3 uses primary circuit embodiment synoptic diagram for verifying attachment.
Embodiment
See Fig. 1, described AC current-voltage in-circuit testing device comprises that a up-flow boosts partly and the secondary detection part, and it is each other through the transmission of wireless signals data, and it is whole to constitute complete verifying attachment; One time up-flow boosting section branch comprises: power safety, air power switch, three-phase automatic coupling voltage regulator, pressure regulation motor, buck button, voltage table, standard current transformer, current/voltage and phase measuring instrument, Wireless Transmitter, communication interface, power light, wiring of input power source post, out-put supply binding post, earth terminal; These components and parts annexations are: wiring of input power source post A1, B1, C1 are connected to the air power switch, and the air power switch is connected to power safety, and the power safety outlet is connected to three-phase automatic coupling voltage regulator L1, L2, L3; Wherein A (or B or C) mutually and receive an end of power light and receives pressure regulation motor one end, and standard current transformer is passed in the outlet of pressure regulator; Be connected to the out-put supply binding post, the outlet of pressure regulator is also received voltage table one end, and receive current/voltage and phase measuring instrument; After three-phase automatic coupling voltage regulator common port X1, X2, X3 all connect; Receive earth terminal, and connect the other end of power light, and receive the other end of pressure regulation motor; And receive current/voltage and phase measuring instrument; The Secondary Winding of standard current transformer is connected to current/voltage and phase measuring instrument, and communication interface is connected to current/voltage and phase measuring instrument, and Wireless Transmitter is connected to current/voltage and phase measuring instrument;
See Fig. 2, secondary detection partly comprises: current/voltage and phase place instrument, pincerlike measuring sonde, communication interface, Wireless Transmitter; These components and parts annexations are: pincerlike current probe is connected to pincerlike phase meter, and Wireless Transmitter is connected to pincerlike phase meter, and communication interface is connected to pincerlike phase meter.In the dot-and-dash line is transformer station's field apparatus, includes the casing current transformer and the protection screen of main transformer.
Multi-functional current voltage and phase place instrument are used for electric current and voltage, and the phasing degree, can show the amplitude and the phase place of the three-phase test power supply of output, adopt the intelligent digital screen display.Communication interface can be connected with computer, and Wireless Transmitter sends wireless signal and transmits data, can carry out the real-time radio data transmission with miscellaneous equipment such as secondary detection equipment.Adopt buck button control pressure regulation motor, drive the voltage and current that the three-phase automatic coupling voltage regulator is regulated output, to reach up-flow and the purpose of boosting once.Air power switch and power safety be timely tripping or fusing when going out line loop short-circuit conditions is arranged, and guarantees device security.Voltage table is used to keep watch on the voltage condition of output.Standard current transformer is used for a little electric current that big current transitions becomes current/voltage and phase place instrument to import.
Basic functional principle is to see Fig. 1, input three-phase positive phase sequence working power; The external power binding post that the three-phase and four-line alternating current input power supplying is arranged; To power safety, power safety output three-phase voltage is got single-phase voltage as pressure regulation machine operation power supply simultaneously to the three-phase automatic coupling voltage regulator through air power switch output voltage; Get single phase poaer supply and keep watch on the power supply situation to power light; Regulate the current/voltage of exporting through the three-phase automatic coupling voltage regulator, three-phase automatic coupling voltage regulator output line passes standard current transformer and receives the out-put supply binding post, and the standard current transformer Secondary Winding induces electric current and is linked into multi-functional current voltage and phase place instrument; Three-phase automatic coupling voltage regulator output voltage is linked into multi-functional current voltage and phase place instrument, in order to measure electric current and the voltage magnitude and the phase place of output.
See Fig. 3,20167 earthing isolators that close at 220kV side position 1 place are provided with three relative ground circuits; A up-flow of verifying attachment boost out-put supply binding post A2, B2, the C2 of part, with test wire one by one correspondence connect the A in factory station, B, C phase, the air power switch closes; Operation buck button boost button; Regulate the electric current of output, observe up-flow electric current that part exports that boosts, but up to the degree of secondary detected phase.Secondary detection is partly accepted in real time once institute's electrical verification of adding an examination of pressure U through Wireless Transmitter
A(or U
B orU
C) data, and to set A (or B or C) phase voltage be the reference vector that secondary current detects.See Fig. 2, at protection screen cabinet current terminal, use pincerlike current measurement probe, wiring detects to secondary cable, detects the amplitude and the phasing degree of electric current secondary loop.Through analysis, judge the correctness of circuit connection to detected data.
The check of factory's other current transformer ac voltage circuit of station can be through the adjustment short dot, and the position of power supply that adjustment adds makes electric current flow through more current transformer once, detects the secondary current of these current transformers, reaches the purpose of inspection.
The method of detection voltage circuit will be broken off the transforming plant primary earth point, and voltage transformer (VT) on the bus band is regulated the output boosted voltage with verifying attachment, exists then, and the secondary voltage terminal detects secondary voltage, and method is basic identical with the detection electric current.
Claims (1)
1. AC current-voltage in-circuit testing device is characterized in that, comprises that a up-flow boosts partly and the secondary detection part, and it is each other through the transmission of wireless signals data, and it is whole to constitute complete verifying attachment; Wherein:
One time up-flow boosting section branch comprises: power safety, air power switch, three-phase automatic coupling voltage regulator, pressure regulation motor, buck button, voltage table, standard current transformer, current/voltage and phase measuring instrument, Wireless Transmitter, communication interface, power light, wiring of input power source post, out-put supply binding post, earth terminal; Its syndeton is: wiring of input power source post (A1, B1, C1) is connected to power safety through the air power switch, and the power safety outlet is connected with three-phase automatic coupling voltage regulator (L1, L2, L3), power light, pressure regulation motor respectively; Standard current transformer is passed in the outlet of three-phase automatic coupling voltage regulator, is connected to out-put supply binding post (A2, B2, C2), and the outlet of three-phase automatic coupling voltage regulator is connected with voltage table (V1, V2, V3), and is connected with current/voltage and phase measuring instrument; The common port of three-phase automatic coupling voltage regulator (X1, X2, X3) is received earth terminal, and is connected with power light, pressure regulation motor, current/voltage and phase measuring instrument respectively after all connecting; The Secondary Winding of standard current transformer is connected to current/voltage and phase measuring instrument, and communication interface is connected to current/voltage and phase measuring instrument, and Wireless Transmitter is connected to current/voltage and phase measuring instrument;
Secondary detection partly comprises: pincerlike phase meter, pincerlike measuring sonde, communication interface, Wireless Transmitter; Its syndeton is: pincerlike measuring sonde is connected with pincerlike phase meter, and pincerlike phase meter is connected with Wireless Transmitter with communication interface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201211148U CN202548258U (en) | 2012-03-28 | 2012-03-28 | Device for checking alternating current/voltage loop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201211148U CN202548258U (en) | 2012-03-28 | 2012-03-28 | Device for checking alternating current/voltage loop |
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| CN202548258U true CN202548258U (en) | 2012-11-21 |
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| CN2012201211148U Expired - Lifetime CN202548258U (en) | 2012-03-28 | 2012-03-28 | Device for checking alternating current/voltage loop |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743994A (en) * | 2014-01-27 | 2014-04-23 | 广州供电局有限公司 | Low-voltage load test method and device |
| CN103777077A (en) * | 2014-02-20 | 2014-05-07 | 陈勇 | Wireless pincerlike phase detection device |
| CN106814278A (en) * | 2017-02-21 | 2017-06-09 | 云南电网有限责任公司 | Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods |
| CN106841737A (en) * | 2017-02-21 | 2017-06-13 | 云南电网有限责任公司 | A kind of low current amplification detecting process in exchange secondary current loop |
| CN107064711A (en) * | 2017-02-17 | 2017-08-18 | 云南电网有限责任公司 | Plant stand is common high anti-once and secondary current in-circuit testing method |
| CN107478943A (en) * | 2017-08-09 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Detect the method and device of differential protection for generator polarity |
| CN109283421A (en) * | 2018-10-16 | 2019-01-29 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage is powered detection test method and device |
| CN113219377A (en) * | 2021-04-30 | 2021-08-06 | 西安热工研究院有限公司 | Generator primary loop checking method based on injection type stator grounding protection device |
-
2012
- 2012-03-28 CN CN2012201211148U patent/CN202548258U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743994A (en) * | 2014-01-27 | 2014-04-23 | 广州供电局有限公司 | Low-voltage load test method and device |
| CN103743994B (en) * | 2014-01-27 | 2017-02-01 | 广州供电局有限公司 | Low-voltage load test method and device |
| CN103777077A (en) * | 2014-02-20 | 2014-05-07 | 陈勇 | Wireless pincerlike phase detection device |
| CN107064711A (en) * | 2017-02-17 | 2017-08-18 | 云南电网有限责任公司 | Plant stand is common high anti-once and secondary current in-circuit testing method |
| CN106814278A (en) * | 2017-02-21 | 2017-06-09 | 云南电网有限责任公司 | Plant stand take out can it is high anti-once and secondary current loop Site Detection and determination methods |
| CN106841737A (en) * | 2017-02-21 | 2017-06-13 | 云南电网有限责任公司 | A kind of low current amplification detecting process in exchange secondary current loop |
| CN107478943A (en) * | 2017-08-09 | 2017-12-15 | 大唐东北电力试验研究所有限公司 | Detect the method and device of differential protection for generator polarity |
| CN109283421A (en) * | 2018-10-16 | 2019-01-29 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage is powered detection test method and device |
| CN109283421B (en) * | 2018-10-16 | 2024-02-09 | 中铁电气化（武汉）设计研究院有限公司 | Low-voltage power-on detection test method and device for railway traction substation |
| CN113219377A (en) * | 2021-04-30 | 2021-08-06 | 西安热工研究院有限公司 | Generator primary loop checking method based on injection type stator grounding protection device |
| CN113219377B (en) * | 2021-04-30 | 2024-02-02 | 西安热工研究院有限公司 | Generator primary loop inspection method based on injection type stator grounding protection device |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20121121 |