CN103633636B - Arrester deteriorates protection device - Google Patents
Arrester deteriorates protection device Download PDFInfo
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- CN103633636B CN103633636B CN201310548507.6A CN201310548507A CN103633636B CN 103633636 B CN103633636 B CN 103633636B CN 201310548507 A CN201310548507 A CN 201310548507A CN 103633636 B CN103633636 B CN 103633636B
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- arrester
- impedance element
- compensating impedance
- control unit
- protection device
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- 230000006866 deterioration Effects 0.000 claims abstract description 11
- 230000004907 flux Effects 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000004880 explosion Methods 0.000 description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229960001296 zinc oxide Drugs 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of arrester deteriorates protection device,It is related to arrester technical field,Described arrester deterioration protection device upper end connection arrester,Lower end is connected on grounding copper bar,It includes compensating impedance element,Increase resistance switch and control unit,Described compensating impedance element one end is connected to the low-pressure end of arrester,Described compensating impedance element is grounded again with increasing after resistance switch in parallel is connected,Described compensating impedance element is connected with increasing the circuit after hindering switch in parallel through magnetic flux transducer with control unit,Described control unit control connection increases resistance switch,During normal operation,Increase resistance switch closure,By compensating impedance element short circuit,It is directly grounded equivalent to arrester ground end,When control unit detects that leakage current of an arrester transfinites value,Send separating brake order driving and increase resistance switch disjunction,Compensating impedance element is sealed in arrester loop,Reach the purpose for reducing leakage current.
Description
Technical field
The present invention relates to arrester technical field, and in particular to a kind of arrester deteriorates protection device.
Background technology
Arrester is that universal system overvoltage protection device is applied in operation of power networks, and it carries the incident of limitation system internal cause
It is struck by lightning, various overvoltage caused by harmonic wave and operation etc., plays vital effect.But Zinc-Oxide Arrester is certainly
The safe for operation of body is often ignored, and with the accumulation for bearing overvoltage impact energy, its performance will also gradually degrade, main table
Now increase for leakage current, its process is relatively slow, has certain disguise, if finding not in time, it is most likely that hair
Raw breakdown fault.Although lightning arrester body value is not high, once an explosion occurred accident, typically all causes system blackout, produce
Be forced to interrupt, caused by indirect loss it is often inestimable.
At present, the method for solving arrester deterioration and explosion issues, typically using wired monitor, hot melten type or heat explosion type
Electrical apparatus release, but they have certain limitation in operative practice：First, the more difficult control of inverse-time curve of hot melten type electrical apparatus release
System, the action of dropout and Explosion of on Arrester are heated sometimes while is occurred；Second, heat explosion type electrical apparatus release does not apply to be made in switch cubicle
With, to site space require it is more big；3rd, on-line detector is also only to provide monitoring result, if there is exceeded phenomenon,
The contradiction of " have a power failure change in time " with " continuous production " is faced, especially when arrester is located in the maintenances such as unattended operation transformer station not
Just remote districts, change not in time, system is in tape jam defect running status, lose on-line checking to a certain extent
Meaning.Furthermore even if hot melten type or heat explosion type electrical apparatus release safely can depart from the arrester of deterioration from system, also lose
The effect protected to system is gone.
Therefore, the arrester deterioration protection that an effective, enforceable ONLINE RECOGNITION takes into account timely protective effect is studied
Product then seem particularly urgently with reality.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of running status that can monitor arrester at any time, effectively prolonged
The arrester deterioration protection device of slow Explosion of on Arrester.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of arrester deteriorates protection device, and described arrester deterioration protection device upper end connection arrester, lower end connects
It is connected on grounding copper bar, it includes compensating impedance element, increases resistance switch and control unit, and described compensating impedance element one end connects
The low-pressure end of arrester is connected to, described compensating impedance element is grounded again with increasing after resistance switch in parallel is connected, described compensation resistance
Anti- element is connected with increasing the circuit after hindering switch in parallel through magnetic flux transducer with control unit, the control connection of described control unit
Increase resistance switch, during normal operation, increase resistance switch closure, compensating impedance element short circuit directly connects equivalent to arrester ground end
Ground, when control unit detects that leakage current of an arrester transfinites value, send separating brake order driving and increase resistance switch disjunction, compensating impedance
Element is sealed in arrester loop, reaches the purpose for reducing leakage current.
Described control unit includes a CPU.
Described increasing resistance switch is contact switch or non-contact switch.
Described compensating impedance element is the arrester of low-voltage-grade, for raising loop resistance when arrester deteriorates
It is anti-.
Described magnetic flux transducer is punching Zero flux sensor.
The beneficial effects of the invention are as follows：
1st, as a result of the principle of lifting impedance, increased compensating impedance element of connecting simply has shared system voltage
Partial value, its Insulation Coordination need one standard of offer without reference system nominal voltage after being completely disengaged compared to arrester
Relevant voltage hierarchically secure insulation distance will save space.
2nd, the principle of lifting impedance is employed, although not logged off in electrical connection, this is substantially reduced and keeps away
The chargeability of thunder device, the rated voltage of arrester is improved, significantly reduce the leakage current of arrester, delayed aging to enter
Journey, while can continue to realize defencive function, gained time to arrester is changed.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Part-structure figure of arrester deterioration protection device as shown in Figure 1, in figure：Compensating impedance element 2, increase resistance
Switch 3 is in parallel, is arrester high-pressure side by protection arrester 1, control unit 4, punching Zero flux sensor 5, A, E is lightning-arrest
Device low-pressure end, I are that the leakage current of an arrester of detection becomes ratio, and U is phase secondary voltage where arrester；
Arrester deterioration protection device upper end connection arrester 1, lower end is connected on grounding copper bar, and it includes compensating impedance
Element 2, increase resistance switch 3 and control unit 4, the one end of compensating impedance element 2 is connected to the low-pressure end E of arrester 1, compensating impedance member
Part 2 is grounded again with increasing after resistance switch 3 is connected in parallel, and the circuit after compensating impedance element 2 is in parallel with increasing resistance switch 3 is through punching zero
Magnetic flux transducer 5 is connected with control unit 4, and the control connection of control unit 4 increases resistance switch 3, and control unit 4 is a CPU.
Compensating impedance element 2 and increasing resistance switch 3 inside arrester deterioration protection device is in parallel, is connected with control unit 4.
Compensating impedance element 2 is the arrester of low-voltage-grade, for raising impedance loop when arrester deteriorates.Increase resistance switch 3
Effect be compensating impedance element seal in arrester ground loop or in arrester ground loop compensating impedance element is short
Connect.Control unit 4 is responsible for the changing value I of monitoring leakage current of an arrester, and controls increasing resistance 3 divisions of switch.
The present invention can monitor the running status of arrester at any time, effectively delay Explosion of on Arrester, influence system operation event
Generation, valuable replacing maintenance time is provided to automatic station.During normal operation, increase resistance switch closure, compensation is hindered
Anti- element short circuit, is directly grounded equivalent to arrester ground end；As control unit detects that leakage current of an arrester transfinites value, hair
Go out separating brake order driving and increase resistance switch disjunction, compensating impedance element seals in arrester loop, reduces arrester chargeability, reach
Reduce the purpose of leakage current.
Control unit 4 detects leakage current of an arrester value I in real time, when detecting that leakage current values are in allowed band,
It in original state is closing position to increase resistance switch 3, will switch 3 short circuits of compensating impedance element 2 in parallel with increasing resistance, equivalent to keeping away
Thunder device earth terminal is directly grounded；When control unit 4 detects that leakage current of an arrester exceeds setting value, separating brake order driving is sent
Increase resistance 3 disjunctions of switch, compensating impedance element 2 is sealed in arrester loop.
Compensating impedance element 2 be by " proportional unit " of protection arrester, by with lightning arrester characteristic identical zinc oxide valve
Piece forms.In order to reach the purpose of the equiva lent impedance part of arrester valve piece senile cause reduction in compensation operation, compensation is sealed in
It is still to meet that system insulation coordinates requirement after impedor.
Residual voltage (peak value) U under arrester lightning impulse current5kAFor more than 3 times (general producer's choosings of system nominal voltage
3.5 times), and rated lightning impulse (external insulation) withstanding voltage (peak value) U of various kinds of equipmentXFor the 4.5 of system nominal voltage
Times.Residual voltage (peak value) U under compensating impedance element lightning impulse currentB, after compensating impedance element seals in arrester loop just
There is following formula establishment：
Ux=U5kA+UB (1)
Because the rated voltage of compensating impedance element is chosen for the 10~20% of system nominal voltage, that is rushed to arrester thunder and lightning
The influence of residual voltage under electric current is hit also 10~20% or so.When arrester deteriorates, compensating impedance element is sealed in, plays increase lotus
Electric rate, reduce leakage current effect；Even if arrester does not deteriorate, compensating impedance element is sealed in, makes arrester lightning impulse current
Lower residual voltage (peak value) U5kA increases by 10~20%, is still not above 4.5 times of system nominal voltage, meets that system insulation coordinates
It is required that.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of arrester deteriorates protection device, described arrester deterioration protection device upper end connection arrester, lower end connection
In on grounding copper bar, it is characterised in that：Described arrester deterioration protection device includes compensating impedance element, increases resistance switch and control
Unit processed, described compensating impedance element one end are connected to the low-pressure end of arrester, and described compensating impedance element is opened with increasing resistance
Pass is grounded again after being connected in parallel, and described compensating impedance element is with increasing the circuit after hindering switch in parallel through magnetic flux transducer and control
Unit is connected, and the control connection of described control unit increases resistance switch, during normal operation, increases resistance switch closure, by compensating impedance member
Part short circuit, it is directly grounded equivalent to arrester ground end, when control unit detects that leakage current of an arrester transfinites value, sends point
Lock order driving increases resistance switch disjunction, and compensating impedance element is sealed in arrester loop.
2. arrester according to claim 1 deteriorates protection device, it is characterised in that：Described increasing resistance switch is opened for contact
Pass or non-contact switch.
3. arrester according to claim 1 deteriorates protection device, it is characterised in that：Described compensating impedance element is low
The arrester of voltage class.
4. arrester according to claim 1 deteriorates protection device, it is characterised in that：Described control unit includes one
CPU。
5. arrester according to claim 1 deteriorates protection device, it is characterised in that：Described magnetic flux transducer is punching
Formula Zero flux sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548507.6A CN103633636B (en) | 2013-11-08 | 2013-11-08 | Arrester deteriorates protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548507.6A CN103633636B (en) | 2013-11-08 | 2013-11-08 | Arrester deteriorates protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103633636A CN103633636A (en) | 2014-03-12 |
| CN103633636B true CN103633636B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310548507.6A Active CN103633636B (en) | 2013-11-08 | 2013-11-08 | Arrester deteriorates protection device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171307A (en) * | 2017-07-18 | 2017-09-15 | 苏州基弘电气设备制造有限公司 | A kind of novel distribution cabinet arrester deteriorates protection device |
| CN107465178A (en) * | 2017-08-17 | 2017-12-12 | 国家电网公司 | Automatic fusing type direct current arrester group |
| CN107749613A (en) * | 2017-12-17 | 2018-03-02 | 王在彬 | A kind of protection device for arrester |
| CN110221153B (en) * | 2019-07-24 | 2021-12-10 | 阳光电源股份有限公司 | Lightning protection device fault detection circuit and method |
| CN112054481A (en) * | 2020-07-22 | 2020-12-08 | 国网山东省电力公司微山县供电公司 | Lightning arrester grounding overvoltage protection device and use method thereof |
| CN112186720B (en) * | 2020-08-24 | 2022-09-13 | 国网河北省电力有限公司电力科学研究院 | High-speed short circuit current limiting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459559B1 (en) * | 1999-01-14 | 2002-10-01 | Dale Jack Christofersen | Thyristor controlled dynamic voltage suppressor for electric power systems |
| CN102484419A (en) * | 2009-08-31 | 2012-05-30 | Abb技术有限公司 | A method and a device for overvoltage protection, and an electric system with such a device |
| CN203536953U (en) * | 2013-11-08 | 2014-04-09 | 国家电网公司 | Lightning arrester deterioration protective device |
-
2013
- 2013-11-08 CN CN201310548507.6A patent/CN103633636B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459559B1 (en) * | 1999-01-14 | 2002-10-01 | Dale Jack Christofersen | Thyristor controlled dynamic voltage suppressor for electric power systems |
| CN102484419A (en) * | 2009-08-31 | 2012-05-30 | Abb技术有限公司 | A method and a device for overvoltage protection, and an electric system with such a device |
| CN203536953U (en) * | 2013-11-08 | 2014-04-09 | 国家电网公司 | Lightning arrester deterioration protective device |
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| Publication number | Publication date |
|---|---|
| CN103633636A (en) | 2014-03-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Applicant after: State Grid Corporation of China Applicant after: Electric Power Research Institute, State Grid Xinjiang Electric Power Company Applicant after: Anhui Zhengguangdian Electric Technologies Co., Ltd. Address before: 100031 West Chang'an Avenue, Beijing, No. 86 Applicant before: State Grid Corporation of China Applicant before: Institute of Electric Power Sciences, Xinjiang Electric Power Company Applicant before: Anhui Zhengguangdian Electric Technologies Co., Ltd. |
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| GR01 | Patent grant |