CN102707206B - Reclosure device for insulation detection - Google Patents
Reclosure device for insulation detection Download PDFInfo
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- CN102707206B CN102707206B CN201210185058.9A CN201210185058A CN102707206B CN 102707206 B CN102707206 B CN 102707206B CN 201210185058 A CN201210185058 A CN 201210185058A CN 102707206 B CN102707206 B CN 102707206B
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- insulation
- reclosing
- insulation detection
- microprocessor
- reclosure
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- 238000009413 insulation Methods 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000012360 testing method Methods 0.000 claims description 11
- 230000003068 static effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 230000016507 interphase Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000000254 damaging effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000001613 Gambling Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a reclosure device, in particular to a reclosure device for insulation detection. The reclosure device for insulation detection belongs to the technical field of relay protection of power system. The reclosure device for insulation detection is in such a structure that an insulation detection device (2) for detecting the interphase or ground insulation of a primary device is connected with the high voltage primary device detected, an output end of the insulation detection device (2) is connected with an input end of a reclosure microprocessor (5), and an output end of the reclosure microprocessor (5) is connected with circuit breaker (6), a display (3) and a loudspeaker (4). The reclosure device for insulation detection provided by the invention can perform insulation detection on a double-circuit parallel line with a sensing voltage which trips off due to failures, and controls the reclosure to act according to detection result, thereby effectively guaranteeing safe and stable operation of the power system.
Description
Technical field
The present invention relates to a kind of reclosing device, particularly relate to a kind of reclosure device for insulation detection, it belongs to Relay Protection Technology in Power System field.
Background technology
The cardinal rule of current relay protection of power system is: the overhead transmission line boundary belt reclosing device of each electric pressure, and cable line is not with reclosing; Bus protection is not with reclosing; Tranformer protection is not with reclosing.
The above-mentioned reclosing device with overhead transmission line protection cooperation, for the reclosing device that the power end of single-side power circuit is protected, behind line failure protection act tripping switch excision trouble spot, single shot reclosing is carried out in the mode of gambling, if previously generation is transient fault insulation recovery, successful reclosing; Previous generation be permanent fault, trouble spot insulation do not recover then reclosing failure, circuit is protected tripping again.For busbar protective device; just owing to worrying that bus first time fault has the possibility of permanent fault; namely worry that the fault current that bus-bar fault produces is large; coincide with on trouble spot and can impact the primary equipments such as switch and damaging property of system; just adopt the relaying configuration scheme of bus protection not with reclosing, do so be obviously blindly, unscientific.
At present; there is the following technical matters in all kinds of primary equipment of known electric system relay protection reclosing using priciple: 1) during overhead transmission line generation permanent fault; blindly carry out single shot reclosing; electric or mechanical damaging impact can be carried out to equipment belts such as switches, if especially after coinciding with trouble spot during second time tripping operation switch be unable to bear open continuously, disconnected operation and tripping will expand accident scope, bring serious impact to the stable of electric system.2) during bus generation transient fault, originally carrying out the simple reclosing in side just can recovery system power transmission immediately, but will through the scene of repeatedly checking of operations staff and electric power system dispatching commanding, communication, the each element power transmission of last bus often needs the time of several hours, especially very easily expansion accident scope under barber etc. easily recurs the physical environments such as power equipment short trouble, makes system lose stable.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of reclosure device for insulation detection, and when electric system primary equipment breaks down, the present invention according to fault recovery situation, can control reclosing action, effectively ensure that power system security, stable operation.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
Reclosure device for insulation detection, its structure is as follows: be connected with detected high pressure primary equipment for detecting primary equipment insulation detection device that is alternate or insulation against ground situation, the output terminal of insulation detection device is connected with the input end of reclosing microprocessor, and the output terminal of reclosing microprocessor is connected with isolating switch, display and loudspeaker.
The output terminal of above-mentioned reclosing microprocessor is also connected with display and loudspeaker.
Above-mentioned detected high pressure primary equipment is transmission line of electricity, bus or transformer.
Above-mentioned reclosing microprocessor is ARM-LPC4357 chip.
Above-mentioned reclosing microprocessor also can be reclosing device.
Owing to adopting technique scheme, tool of the present invention is had the following advantages and effect:
The present invention can carry out Insulation monitoring to the double back parallel circuit after the tripping because of fault with induced voltage, and controls reclosing action according to testing result, ensure that power system security, stable operation.
Accompanying drawing explanation
Fig. 1 is block diagram of the present invention.
Fig. 2 circuit theory diagrams that to be insulation detection device of the present invention detect the static insulating of the overhead transmission line of aircraft carrier line or non-inductive voltage.
Fig. 3 is the circuit theory diagrams that the dynamic insulation of insulation detection device of the present invention to the overhead transmission line or bus that have induced voltage detects.
Fig. 4 is that insulation detection device of the present invention is by the circuit theory diagrams that the principle of series loop dividing potential drop is carried out dynamically or static insulating detects.
In figure, 1, detected high pressure primary equipment, 2, insulation detection device, 3, display, 4, loudspeaker, 5, reclosing microprocessor, 6, isolating switch.
Embodiment
Further illustrate the present invention below in conjunction with embodiment, but protection scope of the present invention not limit by embodiment.
As shown in Figure 1, reclosure device for insulation detection of the present invention, its structure is as follows: be connected with detected high pressure primary equipment 1 for detecting primary equipment insulation detection device 2 that is alternate or insulation against ground situation, the output terminal of insulation detection device 2 is connected with the input end of reclosing microprocessor 5, and the output terminal of reclosing microprocessor 5 is connected with isolating switch 6, display 3 and loudspeaker 4.
Above-mentioned detected high pressure primary equipment 1 is transmission line of electricity, bus or transformer.Reclosing microprocessor 5 is the reclosing device that ARM-LPC4357 chip or relay protection manufacturer produce, and reclosing device is existing city pin product.
Insulation detection device 2 is for detecting the alternate or insulation against ground situation of primary equipment, this is techniques well known, below, enumerate the different Cleaning Principle of three insulation detection devices 2, but this can not be used for the concrete structure limiting insulation detection device 2, as long as the device of high pressure primary equipment insulation situation can be detected.
As shown in Figure 2, insulation detection device 2 detects for the static insulating of the overhead transmission line to aircraft carrier line or non-inductive voltage, the mode that it is mainly converted by transformer impedance is to the static insulating test of the overhead transmission line of aircraft carrier line or non-inductive voltage: mainly measure on bus with or without the ground wire significantly do not removed, namely hung up by operations staff during temporary interruption, exist with or without metallic short circuit phenomenon.When normal condition is electric capacity no-voltage, during as there is abnormal condition, then voltage can be detected.
As shown in Figure 3, insulation detection device detects there being the dynamic insulation of the overhead transmission line of induced voltage or bus, if it clearly distinguishes the dynamic insulation situation of overhead transmission line or the bus necessarily having induced voltage by the size of direct current transient current waveform and state.
As shown in Figure 4, insulation detection device is undertaken dynamically by the principle of series loop dividing potential drop or static insulating detects, it mainly carries out Insulation test by the principle of series loop dividing potential drop, when three-phase bus or transmission line of electricity over the ground or phase insulation puncture constantly, all drop on measurement electric capacity by insulation detection device by the boosting mutual inductor voltage be added on a bus or circuit, insulation detection device can measure sufficiently high voltage, is greater than setting value; If when three-phase bus or transmission line of electricity over the ground or phase insulation is good time, the voltage measured on electric capacity is very little, and lower than setting value.
All can measure high pressure primary equipment by above-mentioned three kinds of insulation detection devices and whether well insulate situation, determine whether bus protection or route protection can close a floodgate.But this can not be used for limiting protection scope of the present invention.CPU in Fig. 2, Fig. 3 and Fig. 4 is ARM-LPC4357 chip.
Principle of work of the present invention is as follows:
Insulation detection device 2 detects the insulation situation of detected high pressure primary equipment 1, and testing result is exported to reclosing microprocessor 5, reclosing microprocessor 5 carries out data analytical calculation after receiving insulation detection device 2 testing result, and control signal is exported to isolating switch 6, control isolating switch 6 action, technical result is also exported to display 3 and loudspeaker 4, for providing operational order for operation personnel by reclosing microprocessor 5 simultaneously.
The present invention is the insulation recovery situation judging by the circuit that disconnects because of fault or bus according to the testing result of insulation detection device, or judges that one does not have the nonloaded line of power transmission or the insulation situation of bus; Then determine whether to send close a floodgate order or circuit and whether can close power transmission by hand.
Reclosing device and insulation monitoring and warning device combine by the present invention, have made the new equipment that adapts to intelligent grid requirement, and this is the intention protection that the present invention emphasizes, the present invention effectively ensure that power system security, stable operation.
Claims (1)
1. reclosure device for insulation detection, it is characterized in that structure is as follows: be connected with detected high pressure primary equipment (1) for detecting primary equipment insulation detection device (2) that is alternate or insulation against ground situation, the output terminal of insulation detection device (2) is connected with the input end of reclosing microprocessor (5), and the output terminal of reclosing microprocessor (5) is connected with isolating switch (6); The output terminal of described reclosing microprocessor (5) is also connected with display (3) and loudspeaker (4); Described detected high pressure primary equipment (1) is transmission line of electricity, bus or transformer;
Insulation detection device (2) detects the insulation situation of detected high pressure primary equipment (1), and the static insulating for the overhead transmission line to aircraft carrier line or non-inductive voltage detects; The overhead transmission line of the mode converted by transformer impedance to aircraft carrier line or non-inductive voltage carries out static insulating test; And testing result is exported to reclosing microprocessor (5), reclosing microprocessor (5) carries out data analytical calculation after receiving insulation detection device (2) testing result, and control signal is exported to isolating switch (6), control isolating switch (6) action, testing result is also exported to display (3) and loudspeaker (4), for providing operational order for operation personnel by reclosing microprocessor (5) simultaneously;
Operation personnel judge the insulation recovery situation by the circuit that disconnects because of fault or bus according to shown testing result, or judge that one does not have the nonloaded line of power transmission or the insulation situation of bus; Then determine whether to send close a floodgate order or circuit and whether can close the order of power transmission by hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185058.9A CN102707206B (en) | 2012-06-07 | 2012-06-07 | Reclosure device for insulation detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185058.9A CN102707206B (en) | 2012-06-07 | 2012-06-07 | Reclosure device for insulation detection |
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| Publication Number | Publication Date |
|---|---|
| CN102707206A CN102707206A (en) | 2012-10-03 |
| CN102707206B true CN102707206B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210185058.9A Active CN102707206B (en) | 2012-06-07 | 2012-06-07 | Reclosure device for insulation detection |
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| CN (1) | CN102707206B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954887A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Power line insulation monitoring method based on instant fault |
| CN104459466A (en) * | 2014-12-02 | 2015-03-25 | 国网河南偃师市供电公司 | Device for judging station of automatic reclosing lock of power transmission and distribution station |
| CN105116716A (en) * | 2015-10-10 | 2015-12-02 | 国网浙江临海市供电公司 | Reclosing control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261304A (en) * | 2008-04-25 | 2008-09-10 | 山东大学 | Low current grounding system distribution circuit single-phase earth fault automatic position setting method |
| CN101478150B (en) * | 2009-01-20 | 2012-04-25 | 李景禄 | Intelligent diagnosis method and apparatus for power transmission and distribution line state |
| CN202870238U (en) * | 2012-06-07 | 2013-04-10 | 辽宁省电力有限公司沈阳供电公司 | Reclosing device with insulation detection function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082261A (en) * | 1993-05-31 | 1994-02-16 | 李养善 | Make the single-pole reclosing of criterion with non-full phase voltage |
| US8284904B2 (en) * | 2008-10-22 | 2012-10-09 | Textron Innovations Inc. | Method for performing a shield integrity test and for isolating trouble in the shield using graphical analysis |
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2012
- 2012-06-07 CN CN201210185058.9A patent/CN102707206B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261304A (en) * | 2008-04-25 | 2008-09-10 | 山东大学 | Low current grounding system distribution circuit single-phase earth fault automatic position setting method |
| CN101478150B (en) * | 2009-01-20 | 2012-04-25 | 李景禄 | Intelligent diagnosis method and apparatus for power transmission and distribution line state |
| CN202870238U (en) * | 2012-06-07 | 2013-04-10 | 辽宁省电力有限公司沈阳供电公司 | Reclosing device with insulation detection function |
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| CN102707206A (en) | 2012-10-03 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121009 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121009 Address after: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant after: Liaoning Shenyang Electric Power Supply Co., Ltd. Applicant after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Applicant before: Liaoning Shenyang Electric Power Supply Co., Ltd. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tao Yongmao Inventor after: Fu Yun Inventor after: Xia Yujue Inventor after: Li Anping Inventor after: Xia Rongzhen Inventor after: Wang Yan Inventor before: Tao Yongmao Inventor before: Li Anping Inventor before: Xia Rongzhen Inventor before: Wang Yan |
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| COR | Change of bibliographic data | ||
| CP03 | Change of name, title or address |
Address after: 110003 Shenyang, Heping District, Liaoning, No. eight via street, No. 94 Patentee after: Shenyang Power Supply Company of State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 110811 eight Heping Street, 94 Heping Street, Liaoning, Shenyang Patentee before: Liaoning Shenyang Electric Power Supply Co., Ltd. Patentee before: State Grid Corporation of China |