CN105098758A - Intelligent switch arc-extinguishing and overvoltage protection device - Google Patents
Intelligent switch arc-extinguishing and overvoltage protection device Download PDFInfo
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- CN105098758A CN105098758A CN201410662018.8A CN201410662018A CN105098758A CN 105098758 A CN105098758 A CN 105098758A CN 201410662018 A CN201410662018 A CN 201410662018A CN 105098758 A CN105098758 A CN 105098758A
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Abstract
The invention provides an intelligent switch arc-extinguishing and overvoltage protection device and relates to the technical field of electric power system arc extinguishing and resonance elimination. The intelligent switch arc-extinguishing and overvoltage protection device comprises a vacuum circuit breaker capable of realizing single-phase motion, a voltage transformer, a three-phase combined overvoltage protector, a high-voltage fuse and a zero sequence current transformer. Three phase ports of the three-phase combined overvoltage protector are respectively connected with three phases of the high-voltage fuse and then are connected with a high-voltage isolation switch, and a grounded end is connected with the voltage transformer and then is grounded. A voltage transformer control end of a microcomputer arc-extinguishing controller is connected with the voltage transformer, and a vacuum contactor control end is connected with the vacuum circuit breaker capable of realizing single-phase motion. Three phase ports of the vacuum circuit breaker capable of realizing single-phase motion are respectively connected with a three-phase high-voltage isolation switch, and the a zero sequence current transformer is arranged between a grounded end and a grounding point. According to the invention, the phase and type of a fault is determined according to signals provided by the voltage transformer and are displayed, the action speed is high, the problems of arc extinguishing and resonance elimination in an overvoltage protection device are effectively solved.
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 |
|---|---|---|---|
| CN201410662018.8A CN105098758A (en) | 2014-11-19 | 2014-11-19 | Intelligent switch arc-extinguishing and overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662018.8A CN105098758A (en) | 2014-11-19 | 2014-11-19 | Intelligent switch arc-extinguishing and overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105098758A true CN105098758A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410662018.8A Pending CN105098758A (en) | 2014-11-19 | 2014-11-19 | Intelligent switch arc-extinguishing and overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105098758A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817170Y (en) * | 2005-08-19 | 2006-09-13 | 安徽赛普电气有限公司 | Arc-resonance extinction route-selecting over voltage protection 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 |
-
2014
- 2014-11-19 CN CN201410662018.8A patent/CN105098758A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817170Y (en) * | 2005-08-19 | 2006-09-13 | 安徽赛普电气有限公司 | Arc-resonance extinction route-selecting over voltage protection 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 |
Non-Patent Citations (1)
| Title |
|---|
| 刘锋等: "新型消弧消谐装置在6kV厂用电系统中的应用", 《电工技术》 * |
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Application publication date: 20151125 |
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| RJ01 | Rejection of invention patent application after publication |