CN104934958A - Intelligent switch arc extinction and overvoltage protection device - Google Patents
Intelligent switch arc extinction and overvoltage protection device Download PDFInfo
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- CN104934958A CN104934958A CN201510436245.3A CN201510436245A CN104934958A CN 104934958 A CN104934958 A CN 104934958A CN 201510436245 A CN201510436245 A CN 201510436245A CN 104934958 A CN104934958 A CN 104934958A
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Abstract
The invention discloses an intelligent switch arc extinction and overvoltage protection device, and relates to the technical field of electrical power system arc extinction and resonance elimination. The intelligent switch arc extinction and overvoltage protection device comprises a vacuum circuit breaker capable of performing the single-phase motion, a voltage transformer, a three-phase combinative overvoltage protector, a microcomputer arc extinction controller, a high-voltage fuse and a zero sequence current transformer; the three phases of ports of the three-phase combinative overvoltage protector are connected with the three phases of the high-voltage fuse respectively to be connected with high-voltage disconnecting switches, the grounded end is connected with the voltage transformer to be grounded, the voltage transformer control end of the microcomputer arc extinction controller is connected with the voltage transformer, the vacuum contactor control end is connected with the vacuum circuit breaker capable of performing the single-phase motion, the three phases of ports of the vacuum circuit breaker capable of performing the single-phase motion are connected with the three phases of high-voltage disconnecting switches respectively, and the zero sequence current transformer is arranged between the grounded end and a grounded point. According to the intelligent switch arc extinction and overvoltage protection device, fault phases and fault types are judged according to signals provided by the voltage transformer and are displayed, the motion speed is high, and the aims of arc extinction, resonance elimination and the like in the overvoltage protection device are effectively achieved.
Description
Technical field
The present invention relates to electric power system extinguishing arc, harmonic elimination technical field, be specifically related to a kind of microcomputer arc extinguishing harmonic elimination and over-pressure safety device.
Background technology
Current 3-35KW neutral point indirect earthing, neutral by arc extinction coil grounding or neutral point are in the electric power system of high resistance ground; because all kinds of overvoltage protection device is without extinguishing arc, harmonic elimination function; or function singleness; thus can not effectively avoid because of the atmospheric over-voltage that system is alternate and cause between phase ground, the single-phase generation to accidents such as having a rest property arc grounding over-voltage, ferro-resonance over-voltages, these overvoltage form certain threat to the life-span of power system device and security of operation.
Summary of the invention
The object of this invention is to provide a kind of quick action, the overvoltage protection of energy extinguishing arc, harmonic elimination.
In order to solve in background technology existing problem, the present invention is by the following technical solutions: it comprise can the vacuum circuit-breaker LKJKZ of monophasic action, voltage transformer pt, three phase combined over-voltage protector LBP, microcomputer arc extinguishing controller ZK, high-tension fuse RD, zero sequence current mutual inductor LH;
Described microcomputer arc extinguishing controller ZK comprises voltage transformer control end, vacuum contactor control end;
Three-phase high-voltage isolating switch is connect after the three-phase port of described three-phase combined voltage protector LBP is connected with three of high-tension fuse RD respectively, ground connection after three phase combined over-voltage protector LBP earth terminal is connected with voltage transformer pt, the voltage transformer control end of microcomputer arc extinguishing controller ZK is connected with voltage transformer pt, vacuum contactor control end with can the vacuum circuit-breaker LKJKZ of monophasic action be connected, the three-phase port of vacuum circuit-breaker LKJKZ of monophasic action can connect three-phase high-voltage isolating switch respectively, can the vacuum circuit-breaker LKJKZ earth terminal ground connection of monophasic action, zero sequence current mutual inductor LH can be provided with between the vacuum circuit-breaker LKJKZ earth terminal of monophasic action and earth point.
When there is single-phase interval phase arc grounding fault, microcomputer arc extinguishing controller mutually the vacuum circuit-breaker of monophasic action can send action command, device can action in 30ms, the arc grounding of instability is converted into stable metallic ground, the overvoltage Limiting on-Line Voltage level that arc grounding causes, greatly reduce time that single-phase earthing arc light continues and the insulation breakdown short circuit accident caused thus and Explosion of on Arrester accident, with the vacuum circuit-breaker of monophasic action replacing the extinguishing arc scheme that traditional high-voltage and current-limitation fuse adds AC vacuum contactor, decrease the workload of regular maintenance and change the expense of fuse.
Intelligent switch extinguishing arc of the present invention and overvoltage protection; with microcomputer arc extinguishing controller for core control part; the signal provided according to voltage transformer judges the separate and fault type of fault and shows; quick action of the present invention, efficiently solves the problem such as arc-extinguishing harmonic-eliminating in overvoltage protection.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention.
Embodiment
See Fig. 1, a kind of intelligent switch extinguishing arc and overvoltage protection, it comprise can the vacuum circuit-breaker LKJKZ of monophasic action, voltage transformer pt, three phase combined over-voltage protector LBP, microcomputer arc extinguishing controller ZK, high-tension fuse RD, zero sequence current mutual inductor LH;
Described microcomputer arc extinguishing controller ZK comprises voltage transformer control end, vacuum contactor control end;
Three-phase high-voltage isolating switch is connect after the three-phase port of described three-phase combined voltage protector LBP is connected with three of high-tension fuse RD respectively, ground connection after three phase combined over-voltage protector LBP earth terminal is connected with voltage transformer pt, the voltage transformer control end of microcomputer arc extinguishing controller ZK is connected with voltage transformer pt, vacuum contactor control end with can the vacuum circuit-breaker LKJKZ of monophasic action be connected, the three-phase port of vacuum circuit-breaker LKJKZ of monophasic action can connect three-phase high-voltage isolating switch respectively, can the vacuum circuit-breaker LKJKZ earth terminal ground connection of monophasic action, zero sequence current mutual inductor LH can be provided with between the vacuum circuit-breaker LKJKZ earth terminal of monophasic action and earth point.
When there is single-phase interval phase arc grounding fault, microcomputer arc extinguishing controller mutually the vacuum circuit-breaker of monophasic action can send action command, device can action in 30ms, the arc grounding of instability is converted into stable metallic ground, the overvoltage Limiting on-Line Voltage level that arc grounding causes, greatly reduce time that single-phase earthing arc light continues and the insulation breakdown short circuit accident caused thus and Explosion of on Arrester accident, with the vacuum circuit-breaker of monophasic action replacing the extinguishing arc scheme that traditional high-voltage and current-limitation fuse adds AC vacuum contactor, decrease the workload of regular maintenance and change the expense of fuse.
Intelligent switch extinguishing arc of the present invention and overvoltage protection; with microcomputer arc extinguishing controller for core control part; the signal provided according to voltage transformer judges the separate and fault type of fault and shows; quick action of the present invention, efficiently solves the problem such as arc-extinguishing harmonic-eliminating in overvoltage protection.
Claims (2)
1. intelligent switch extinguishing arc and overvoltage protection, it is characterized in that, it comprises can vacuum circuit-breaker (LKJKZ), voltage transformer (PT), three phase combined over-voltage protector (LBP), microcomputer arc extinguishing controller (ZK), high-tension fuse (RD), the zero sequence current mutual inductor (LH) of monophasic action; Described microcomputer arc extinguishing controller (ZK) comprises voltage transformer control end, vacuum contactor control end.
2. after the three-phase port of the three-phase combined voltage protector (LBP) described in is connected with three of high-tension fuse (RD) respectively, connect three-phase high-voltage isolating switch, ground connection after three phase combined over-voltage protector (LBP) earth terminal is connected with voltage transformer (PT), the voltage transformer control end of microcomputer arc extinguishing controller (ZK) is connected with voltage transformer (PT), vacuum contactor control end with can the vacuum circuit-breaker (LKJKZ) of monophasic action be connected, the three-phase port of vacuum circuit-breaker (LKJKZ) of monophasic action can connect three-phase high-voltage isolating switch respectively, can vacuum circuit-breaker (LKJKZ) the earth terminal ground connection of monophasic action, the vacuum circuit-breaker (LKJKZ) of monophasic action zero sequence current mutual inductor (LH) between earth terminal and earth point, can be provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436245.3A CN104934958A (en) | 2015-07-23 | 2015-07-23 | Intelligent switch arc extinction and overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436245.3A CN104934958A (en) | 2015-07-23 | 2015-07-23 | Intelligent switch arc extinction and overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104934958A true CN104934958A (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510436245.3A Pending CN104934958A (en) | 2015-07-23 | 2015-07-23 | Intelligent switch arc extinction and overvoltage protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104934958A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100007997A1 (en) * | 2008-07-11 | 2010-01-14 | Goodwell Electric Corp. | Electronic arc extinguishing device |
| CN203180517U (en) * | 2013-01-22 | 2013-09-04 | 合肥隆科电力设备有限责任公司 | Microcomputer arc-extinguishing, harmonic-eliminating and overvoltage-protecting device |
| CN203180518U (en) * | 2013-01-22 | 2013-09-04 | 合肥隆科电力设备有限责任公司 | Intelligent switch arc-extinguishing and overvoltage-protecting device |
-
2015
- 2015-07-23 CN CN201510436245.3A patent/CN104934958A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100007997A1 (en) * | 2008-07-11 | 2010-01-14 | Goodwell Electric Corp. | Electronic arc extinguishing device |
| CN203180517U (en) * | 2013-01-22 | 2013-09-04 | 合肥隆科电力设备有限责任公司 | Microcomputer arc-extinguishing, harmonic-eliminating and overvoltage-protecting device |
| CN203180518U (en) * | 2013-01-22 | 2013-09-04 | 合肥隆科电力设备有限责任公司 | Intelligent switch arc-extinguishing and overvoltage-protecting device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |