CN203312787U - Overvoltage protection device with circuit detection device - Google Patents
Overvoltage protection device with circuit detection device Download PDFInfo
- Publication number
- CN203312787U CN203312787U CN2012204635166U CN201220463516U CN203312787U CN 203312787 U CN203312787 U CN 203312787U CN 2012204635166 U CN2012204635166 U CN 2012204635166U CN 201220463516 U CN201220463516 U CN 201220463516U CN 203312787 U CN203312787 U CN 203312787U
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- China
- Prior art keywords
- phase
- overvoltage
- detection device
- circuit
- voltage
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- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 239000006096 absorbing agent Substances 0.000 claims abstract description 18
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 230000001012 protector Effects 0.000 claims abstract description 6
- 230000008030 elimination Effects 0.000 claims abstract description 5
- 238000003379 elimination reaction Methods 0.000 claims abstract description 5
- 230000001629 suppression Effects 0.000 claims abstract 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000011787 zinc oxide Substances 0.000 abstract description 5
- 230000006378 damage Effects 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Emergency Protection Circuit Devices (AREA)
Abstract
本实用新型公开了一种带电路检测装置的过电压保护装置，包括经真空断路器与三相三线系统的各相母线电连接的用电设备、电路检测装置以及用电设备旁的三相三线系统的各相母线与地之问置有的过电压吸收器和消弧消谐保护组件；所述电路检测装置，与用电设备连接；所述真空断路器的两端并联连接有断路器重燃抑制器；所述过电压吸收器由氧化锌压敏电阻器构成；所述消弧消谐保护组件中的电压互感器一次侧的中性点与地之间串接有电压互感器保护器。
The utility model discloses an overvoltage protection device with a circuit detection device, which comprises electrical equipment electrically connected to busbars of each phase of a three-phase three-wire system via a vacuum circuit breaker, a circuit detection device, and a three-phase three-wire system next to the electrical equipment There are overvoltage absorbers and arc suppression and harmonic elimination protection components between the busbars of each phase of the system and the ground; the circuit detection device is connected to the electrical equipment; the two ends of the vacuum circuit breaker are connected in parallel with a circuit breaker restart Suppressor; the overvoltage absorber is composed of a zinc oxide varistor; a voltage transformer protector is connected in series between the neutral point of the primary side of the voltage transformer in the arc suppression and resonance elimination protection component and the ground.
Description
Technical field
The utility model relates to a kind of overvoltage protection.
Background technology
At present, China considers for economical and operation, 3～35kV system in three-phase power grid is neutral point non-direct grounding system, and the various overvoltage in this system have very large impact to the insulation of power consumption equipment, has brought very large hidden danger for the safe operation of using electricity system.In system, superpotential formation mainly contains Lightning Over-voltage, switching overvoltage and arc grounding overvoltage; For solving these superpotential harm; people are everlasting, between each phase bus of the other three-phase three wire system of power consumption equipment and ground, surge absorber and arc-extinguishing harmonic-eliminating protection assembly are set; surge absorber wherein is connected in series and forms mutually with carborundum or zinc oxide by discharging gap, and arc-extinguishing harmonic-eliminating protection assembly is electrically connected to form by high-tension fuse, high-voltage and current-limitation fuse, high-pressure AC vacuum contactor, voltage transformer and controller.This overvoltage facility for prevention and control that surge absorber and arc-extinguishing harmonic-eliminating protection assembly is simply piled up exists weak point, at first, though surge absorber can be eliminated the overvoltage produced because of the thunderbolt in atmosphere or artificial operation, but can't eliminate vacuum circuit-breaker makes its contact ask the defect of restriking because cut-offfing the switching overvoltage produced in (closed or shutoff) process, its cause is, after the vacuum circuit breaker cut-offs, its two ends have formed different independently mini systems because cut-offfing impedance in loop or the difference of induction reactance or capacitive reactance, the superpotential frequency that this independently mini system produces, phase place all can not be consistent, so caused surge absorber to be difficult to eliminate up hill and dale the overvoltage at vacuum circuit-breaker two ends, thereby also just can't suppress it restrikes, secondly, discharging gap in surge absorber could play restriction to overvoltage while not only making various overvoltage need reach the place value of surge absorber, and system now has been subjected to superpotential impact, also too short because of the discharge time of Lightning Over-voltage, be Microsecond grade, and there is discharge time in surge absorber, make it to Lightning Over-voltage, not have effective protective effect, again, the protective feature of arc-extinguishing harmonic-eliminating protection assembly is weak, for example, after system is gone through generation arc grounding, the action of arc-extinguishing harmonic-eliminating protection assembly, removal of faults on system, the normal operation of three-phase power grid recovery, in the process that arc-extinguishing harmonic-eliminating protection assembly resets, system becomes another kind of state from a kind of stable state-transition, in system, normal two relatively ask mutually because asking that mutually electric capacity forms and shove, thereby the primary winding to the voltage transformer in system produces impact, and then causes the damage of voltage transformer and the accident of High-voltage Fuse Blow, finally, surge absorber and arc-extinguishing harmonic-eliminating protection assembly ask because adhering to different protection categories separately how by multidisciplinary, designed, to configure and to be supplied, and make it mutually raise difficult questions for discussion to consider to carry out organically cooperation as a whole and carry out the comprehensive overvoltage protection system of complete and make over-voltage protection function perfect not.
The utility model content
The technical problems to be solved in the utility model, for overcoming weak point of the prior art, provides a kind of overvoltage protector for indirect neutral point-grounding power system in three-phase power grid rational in infrastructure, practical, easy to use.
For solving technical problem of the present utility model, the technical scheme adopted is:
A kind of overvoltage protection with the circuit checkout gear, comprise that each phase bus of the three-phase three wire system on the power consumption equipment, circuit checker and the power consumption equipment side that are electrically connected to each phase bus of three-phase three wire system through vacuum circuit-breaker is protected assembly with surge absorber and arc-extinguishing harmonic-eliminating that asking of ground is equipped with; Described circuit checker, with power consumption equipment, be connected, described circuit checker comprises contact modules, both positive and negative polarity detection module and voltage strength detection module, described contact modules comprises two contact pins, described contact pin contacts respectively positive pole and the negative pole of circuit to be detected, described both positive and negative polarity detection module is connected with described contact modules, and described voltage strength detection module is connected with described contact modules, and described voltage strength grade is corresponding with default range of voltage values; The two ends of described vacuum circuit-breaker are connected in parallel to the circuit breaker inhibitor of restriking; Described surge absorber consists of zinc oxide varistor; Between the neutral point of the voltage transformer primary side in described arc-extinguishing harmonic-eliminating protection assembly and ground, be serially connected with the voltage transformer protector.
In the utility model, the two ends of vacuum circuit-breaker are connected in parallel to the circuit breaker inhibitor of restriking, and the overvoltage produced while cut-offfing be used to limiting vacuum circuit-breaker, restrike to prevent vacuum circuit-breaker; Surge absorber consists of zinc oxide varistor, be used to eliminating Lightning Over-voltage or switching overvoltage; Between the neutral point of the voltage transformer primary side in arc-extinguishing harmonic-eliminating protection assembly and ground, be serially connected with the voltage transformer protector, after preventing the arc grounding Failure elimination, shoving to the harm of voltage transformer when system recovers normal.
The accompanying drawing explanation
Fig. 1 is a kind of basic structure schematic diagram of the present utility model.
Embodiment
As Fig. 1, a kind of overvoltage protection with the circuit checkout gear, comprise that each phase bus of the three-phase three wire system 2 on the power consumption equipment 3, circuit checker and power consumption equipment 3 sides that are electrically connected to each phase bus of three-phase three wire system 2 through vacuum circuit-breaker 1 is protected assembly 5 with surge absorber 4 and arc-extinguishing harmonic-eliminating that asking of ground is equipped with; Described circuit checker 7, with power consumption equipment 3, be connected, described circuit checker 7 comprises contact modules, both positive and negative polarity detection module and voltage strength detection module, described contact modules comprises two contact pins, described contact pin contacts respectively positive pole and the negative pole of circuit to be detected, described both positive and negative polarity detection module is connected with described contact modules, and described voltage strength detection module is connected with described contact modules, and described voltage strength grade is corresponding with default range of voltage values; The two ends of described vacuum circuit-breaker 1 are connected in parallel to the circuit breaker inhibitor 6 of restriking; Described surge absorber 4 consists of zinc oxide varistor; Between the neutral point of the voltage transformer primary side in described arc-extinguishing harmonic-eliminating protection assembly and ground, be serially connected with the voltage transformer protector.
If of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204635166U CN203312787U (en) | 2012-09-12 | 2012-09-12 | Overvoltage protection device with circuit detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204635166U CN203312787U (en) | 2012-09-12 | 2012-09-12 | Overvoltage protection device with circuit detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312787U true CN203312787U (en) | 2013-11-27 |
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ID=49618962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204635166U Expired - Fee Related CN203312787U (en) | 2012-09-12 | 2012-09-12 | Overvoltage protection device with circuit detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078960A (en) * | 2014-06-11 | 2014-10-01 | 安徽三和电力技术有限公司 | Electric energy security intelligent detection and control device |
-
2012
- 2012-09-12 CN CN2012204635166U patent/CN203312787U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078960A (en) * | 2014-06-11 | 2014-10-01 | 安徽三和电力技术有限公司 | Electric energy security intelligent detection and control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150912 |
|
| EXPY | Termination of patent right or utility model |