CN203180518U - Intelligent switch arc-extinguishing and overvoltage-protecting device - Google Patents

Intelligent switch arc-extinguishing and overvoltage-protecting device Download PDF

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Publication number
CN203180518U
CN203180518U CN 201320032528 CN201320032528U CN203180518U CN 203180518 U CN203180518 U CN 203180518U CN 201320032528 CN201320032528 CN 201320032528 CN 201320032528 U CN201320032528 U CN 201320032528U CN 203180518 U CN203180518 U CN 203180518U
Authority
CN
China
Prior art keywords
phase
arc
voltage
extinguishing
vacuum circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320032528
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Chinese (zh)
Inventor
李青
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEFEI LONGKE ELECTRIC POWER EQUIPMENT CO Ltd
Original Assignee
HEFEI LONGKE ELECTRIC POWER EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HEFEI LONGKE ELECTRIC POWER EQUIPMENT CO Ltd filed Critical HEFEI LONGKE ELECTRIC POWER EQUIPMENT CO Ltd
Priority to CN 201320032528 priority Critical patent/CN203180518U/en
Application granted granted Critical
Publication of CN203180518U publication Critical patent/CN203180518U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

An intelligent switch arc-extinguishing and overvoltage-protecting device relates to the technical field of arc extinguishing and harmonic eliminating of an electric power system. The intelligent switch arc-extinguishing and overvoltage-protecting device comprises a vacuum circuit breaker capable of performing single-phase motions, a voltage transformer, a three-phase combined type overvoltage protector, a microcomputer arc-extinguishing controller, a high-voltage fuse, and a zero-sequence current transformer, wherein three-phase ports of the three-phase combined type overvoltage protector are respectively connected with three phases of the high-voltage fuse and then connected with a high-voltage isolation switch; a grounding terminal of the three-phase combined type overvoltage protector is connected with the voltage transformer and then grounded; a voltage transformer control terminal of the microcomputer arc-extinguishing controller is connected with the voltage transformer; a vacuum contactor control terminal of the microcomputer arc-extinguishing controller is connected with the vacuum circuit breaker capable of performing the single-phase motions; three-phase ports of the vacuum circuit breaker capable of performing the single-phase motions are respectively connected with the three-phase high-voltage isolation switch; and the zero-sequence current transformer is arranged between a grounding terminal of the vacuum circuit breaker capable of performing the single-phase motions and a grounding point. According to the intelligent switch arc-extinguishing and overvoltage-protecting device, fault phases and fault types are determined and displayed based on signals provided by the voltage transformer, the action speed is high, and the problems of arc extinguishing and harmonic eliminating in the overvoltage-protecting device are effectively solved.

Description

Intelligent switch extinguishing arc and overvoltage protection
Technical field
The utility model relates to electric power system extinguishing arc, harmonic elimination technical field, is specifically related to a kind of intelligent switch extinguishing arc and overvoltage protection.
Background technology
3-35KV neutral point indirect earthing, neutral by arc extinction coil grounding or neutral point are in the electric power system of high resistance ground at present; because all kinds of overvoltage protection devices do not have extinguishing arc, harmonic elimination function; or function singleness; thereby the generation of accidents such as the atmospheric over-voltage that can not effectively avoid causing between alternate and phase ground because of system, single phase intermittent arc grounding overvoltage, ferro-resonance over-voltage, these overvoltage constitute certain threat to life-span and the security of operation of power system device.
Summary of the invention
The purpose of this utility model provides a kind of quick action, the overvoltage protection of energy extinguishing arc, harmonic elimination.
In order to solve existing problem in the background technology, the utility model is by the following technical solutions: it comprise can single-phase action vacuum circuit-breaker LKJKZ, voltage transformer pt, three phase combined over-voltage protector LBP, microcomputer arc-suppressing controller ZK, high-tension fuse RD, zero sequence current mutual inductor LH;
Described microcomputer arc-suppressing controller ZK comprises voltage transformer control end, vacuum contactor control end;
The three-phase port of described three phase combined over-voltage protector LBP connects three-phase high-voltage isolating switch respectively with after three of high-tension fuse RD is connected; three phase combined over-voltage protector LBP earth terminal is connected back ground connection with voltage transformer pt; the voltage transformer control end of microcomputer arc-suppressing controller ZK is connected with voltage transformer pt; the vacuum contactor control end is connected with vacuum circuit-breaker LKJKZ that can single-phase action; the three-phase port of vacuum circuit-breaker LKJKZ that can single-phase action connects three-phase high-voltage isolating switch respectively; vacuum circuit-breaker LKJKZ earth terminal ground connection that can single-phase action is provided with zero sequence current mutual inductor LH between vacuum circuit-breaker LKJKZ earth terminal that can single-phase action and the earth point.
When single phase intermittent arc grounding fault takes place when, the microcomputer arc-suppressing controller sends action command to vacuum circuit-breaker that can single-phase action, device can move in 30ms, unsettled arc grounding is converted into stable metal ground connection, the overvoltage Limiting on-Line Voltage level of arc grounding initiation, the insulation breakdown short circuit accident and the Explosion of on Arrester accident that reduce the lasting time of single-phase earthing arc light greatly and cause thus, replace the extinguishing arc scheme that traditional high-voltage and current-limitation fuse adds AC vacuum contactor with vacuum circuit-breaker that can single-phase action, reduced the workload of regular maintenance and changed the expense of fuse.
Intelligent switch extinguishing arc of the present utility model and overvoltage protection; be core control part with the microcomputer arc-suppressing controller; judge fault separate and fault type and demonstration according to the signal that voltage transformer provides; the utility model quick action has effectively solved problem such as extinguishing arc, harmonic elimination in the overvoltage protection.
Description of drawings
Fig. 1 is electrical schematic diagram of the present utility model
Embodiment
Referring to Fig. 1, a kind of intelligent switch extinguishing arc and overvoltage protection, it comprise can single-phase action vacuum circuit-breaker LKJKZ, voltage transformer pt, three phase combined over-voltage protector LBP, microcomputer arc-suppressing controller ZK, high-tension fuse RD, zero sequence current mutual inductor LH;
Described microcomputer arc-suppressing controller ZK comprises voltage transformer control end, vacuum contactor control end;
The three-phase port of described three phase combined over-voltage protector LBP connects three-phase high-voltage isolating switch respectively with after three of high-tension fuse RD is connected; three phase combined over-voltage protector LBP earth terminal is connected back ground connection with voltage transformer pt; the voltage transformer control end of microcomputer arc-suppressing controller ZK is connected with voltage transformer pt; the vacuum contactor control end is connected with vacuum circuit-breaker LKJKZ that can single-phase action; the three-phase port of vacuum circuit-breaker LKJKZ that can single-phase action connects three-phase high-voltage isolating switch respectively; vacuum circuit-breaker LKJKZ earth terminal ground connection that can single-phase action is provided with zero sequence current mutual inductor LH between vacuum circuit-breaker LKJKZ earth terminal that can single-phase action and the earth point.
When single phase intermittent arc grounding fault takes place when, the microcomputer arc-suppressing controller sends action command to vacuum circuit-breaker that can single-phase action, device can move in 30ms, unsettled arc grounding is converted into stable metal ground connection, the overvoltage Limiting on-Line Voltage level of arc grounding initiation, the insulation breakdown short circuit accident and the Explosion of on Arrester accident that reduce the lasting time of single-phase earthing arc light greatly and cause thus, replace the extinguishing arc scheme that traditional high-voltage and current-limitation fuse adds AC vacuum contactor with vacuum circuit-breaker that can single-phase action, reduced the workload of regular maintenance and changed the expense of fuse.
Intelligent switch extinguishing arc of the present utility model and overvoltage protection; be core control part with the microcomputer arc-suppressing controller; judge fault separate and fault type and demonstration according to the signal that voltage transformer provides; the utility model quick action has effectively solved problem such as extinguishing arc, harmonic elimination in the overvoltage protection.

Claims (1)

1. an intelligent switch extinguishing arc and overvoltage protection, it is characterized in that, it comprise can single-phase action vacuum circuit-breaker (LKJKZ), voltage transformer (PT), three phase combined over-voltage protector (LBP), microcomputer arc-suppressing controller (ZK), high-tension fuse (RD), zero sequence current mutual inductor (LH);
Described microcomputer arc-suppressing controller (ZK) comprises voltage transformer control end, vacuum contactor control end;
The three-phase port of described three phase combined over-voltage protector (LBP) connects three-phase high-voltage isolating switch respectively with after three of high-tension fuse (RD) is connected; three phase combined over-voltage protector (LBP) earth terminal is connected back ground connection with voltage transformer (PT); the voltage transformer control end of microcomputer arc-suppressing controller (ZK) is connected with voltage transformer (PT); the vacuum contactor control end is connected with vacuum circuit-breaker (LKJKZ) that can single-phase action; the three-phase port of vacuum circuit-breaker (LKJKZ) that can single-phase action connects three-phase high-voltage isolating switch respectively; vacuum circuit-breaker (LKJKZ) earth terminal ground connection that can single-phase action is provided with zero sequence current mutual inductor (LH) between vacuum circuit-breaker (LKJKZ) earth terminal that can single-phase action and the earth point.
CN 201320032528 2013-01-22 2013-01-22 Intelligent switch arc-extinguishing and overvoltage-protecting device Expired - Fee Related CN203180518U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320032528 CN203180518U (en) 2013-01-22 2013-01-22 Intelligent switch arc-extinguishing and overvoltage-protecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320032528 CN203180518U (en) 2013-01-22 2013-01-22 Intelligent switch arc-extinguishing and overvoltage-protecting device

Publications (1)

Publication Number Publication Date
CN203180518U true CN203180518U (en) 2013-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320032528 Expired - Fee Related CN203180518U (en) 2013-01-22 2013-01-22 Intelligent switch arc-extinguishing and overvoltage-protecting device

Country Status (1)

Country Link
CN (1) CN203180518U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104300525A (en) * 2014-09-22 2015-01-21 合肥凯正电气技术有限公司 Digital arc extinction restraining system
CN104868461A (en) * 2015-06-01 2015-08-26 安徽禄讯电子科技有限公司 Intelligent switch arc-extinguishing and overvoltage-protecting device
CN104901300A (en) * 2015-07-07 2015-09-09 安徽瑞宏信息科技有限公司 Arc-suppression and over-voltage protection device for intelligent switch
CN104934958A (en) * 2015-07-23 2015-09-23 合肥扬帆通信元器件有限公司 Intelligent switch arc extinction and overvoltage protection device
CN105098758A (en) * 2014-11-19 2015-11-25 芜湖蓝宙电子科技有限公司 Intelligent switch arc-extinguishing and overvoltage protection device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104300525A (en) * 2014-09-22 2015-01-21 合肥凯正电气技术有限公司 Digital arc extinction restraining system
CN105098758A (en) * 2014-11-19 2015-11-25 芜湖蓝宙电子科技有限公司 Intelligent switch arc-extinguishing and overvoltage protection device
CN104868461A (en) * 2015-06-01 2015-08-26 安徽禄讯电子科技有限公司 Intelligent switch arc-extinguishing and overvoltage-protecting device
CN104901300A (en) * 2015-07-07 2015-09-09 安徽瑞宏信息科技有限公司 Arc-suppression and over-voltage protection device for intelligent switch
CN104934958A (en) * 2015-07-23 2015-09-23 合肥扬帆通信元器件有限公司 Intelligent switch arc extinction and overvoltage protection device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130904

Termination date: 20150122