CN104078967A - Arc extinction, resonance elimination, line selection and over voltage protection system - Google Patents
Arc extinction, resonance elimination, line selection and over voltage protection system Download PDFInfo
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- CN104078967A CN104078967A CN201410260584.6A CN201410260584A CN104078967A CN 104078967 A CN104078967 A CN 104078967A CN 201410260584 A CN201410260584 A CN 201410260584A CN 104078967 A CN104078967 A CN 104078967A
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Abstract
The invention provides an arc extinction, resonance elimination, line selection and over voltage protection system and relates to the technical field of electrics. In the normal operating process, a microcomputer controller continuously detects voltage signals provided by a PT; once line breakage of the PT or single-phase metal grounding or single-phase arc grounding happens to the system, the voltage of a PT auxiliary winding is changed promptly from a low level to a high level, starting of the microcomputer controller is interrupted, and the fault type and the fault phase are judged according to the change of the secondary voltage of the PT; if the fault is single-phase line breakage of the PT, the microcomputer controller outputs a switching value contact signal; if the fault is single-phase metal grounding, the microcomputer controller outputs a switching value contact signal and can also send an action command to a vacuum contactor according to user requirements; if the fault is single-phase arc grounding, the microcomputer controller sends an action command to the vacuum contactor to make the vacuum contactor quickly act to extinct arc light. The arc extinction, resonance elimination, line selection and over voltage protection system can be widely applied to various arc extinction and over voltage protection devices; the controller has the functions of arc extinction, resonance elimination and line selection; consequently, the system is praised by users because of multiple functions.
Description
Technical field
The present invention relates to technical field of electricity, be specifically related to a kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection system.
Background technology
Traditional concept is thought; 3-35kV electrical network belongs to medium voltage distribution network; in this type of electrical network, internal overvoltage amplitude is not high; so the principal element that jeopardizes line insulation safety is not internal overvoltage, but atmospheric over-voltage; thereby the overvoltage protection measure of taking is for a long time only for preventing atmospheric over-voltage; technical measures only limits to install various types of lightning arresters, and its protection value is higher, for internal overvoltage, does not have restriction.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection system, when system generation arc grounding, arc grounding is converted into metallic earthing, has thoroughly eliminated arc grounding overvoltage.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection system, comprise a microcomputerized controller, on described microcomputerized controller, be connected with failure indication module, ground connection indicating module, PT broken string indicating module, resonance modules, operation indicating module, route selection module, harmonic elimination module and liquid crystal panel display module;
Route selection module, when fault occurs, can be rapidly be carried out data sampling and analyze the zero-sequence current of each circuit, selects fast faulty line, the problem on route selection accuracy rate ground while overcoming the slow and arc grounding of conventional line selection apparatus route selection speed;
Harmonic elimination module is when system generation resonance, and microcomputerized controller sends action command fast, and harmonic elimination apparatus moves immediately, eliminates system resonance; Avoided the danger of burning " PT " and quick-fried " insurance ";
Liquid crystal panel display module picture is clear, attractive in appearance, controller powers on to move and can show three-phase line voltage simultaneously, save three analog voltage tables, while normally moving, microcomputerized controller constantly detects the voltage signal that PT provides, and once system, PT broken string, Single Phase Metal ground connection or single-phase arc grounding occurs, PT assists the voltage of winding (open delta) by low level, to transfer high level to immediately, microcomputerized controller starts interruption, and according to the variation of PT secondary voltage, failure judgement type and separate;
If PT single-phase wire break fault, microcomputerized controller output switch amount contact point signal;
If Single Phase Metal earth fault, microcomputerized controller output switch amount contact point signal, also can require to send action command to vacuum contactor according to user;
If single-phase arc grounding fault, microcomputerized controller sends action command to vacuum contactor, makes vacuum contactor quick acting, eliminates arc light.
Described microcomputerized controller is also connected with communication interface module, and described communication interface module is RS485 or RS232 communication interface, can carry out Long-range Data Transmission with Computerized monitor system, and communication protocol can require to set according to user simultaneously.
Described microcomputerized controller is also connected with failure wave-recording module, and record capable of circulation is fault waveform repeatedly, and memory extinguishing arc and each operate condition of overvoltage protection provide sufficient data message for moving optimization and accident analysis.
The invention has the beneficial effects as follows: the present invention is reasonable in design, easy to use, can be widely used in various extinguishing arcs and overvoltage protection, this controller has extinguishing arc, harmonic elimination, route selection function, due to a device multipotency, is deeply highly commended by customers.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, a kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection system, comprise a microcomputerized controller, on described microcomputerized controller, be connected with failure indication module, ground connection indicating module, PT broken string indicating module, resonance modules, operation indicating module, route selection module, harmonic elimination module and liquid crystal panel display module;
Route selection module, when fault occurs, can be rapidly be carried out data sampling and analyze the zero-sequence current of each circuit, selects fast faulty line, the problem on route selection accuracy rate ground while overcoming the slow and arc grounding of conventional line selection apparatus route selection speed;
Harmonic elimination module is when system generation resonance, and microcomputerized controller sends action command fast, and harmonic elimination apparatus moves immediately, eliminates system resonance; Avoided the danger of burning " PT " and quick-fried " insurance ";
Liquid crystal panel display module picture is clear, attractive in appearance, controller powers on to move and can show three-phase line voltage simultaneously, save three analog voltage tables, while normally moving, microcomputerized controller constantly detects the voltage signal that PT provides, and once system, PT broken string, Single Phase Metal ground connection or single-phase arc grounding occurs, PT assists the voltage of winding (open delta) by low level, to transfer high level to immediately, microcomputerized controller starts interruption, and according to the variation of PT secondary voltage, failure judgement type and separate;
If PT single-phase wire break fault, microcomputerized controller output switch amount contact point signal;
If Single Phase Metal earth fault, microcomputerized controller output switch amount contact point signal, also can require to send action command to vacuum contactor according to user;
If single-phase arc grounding fault, microcomputerized controller sends action command to vacuum contactor, makes vacuum contactor quick acting, eliminates arc light.
Described microcomputerized controller is also connected with communication interface module, and described communication interface module is RS485 or RS232 communication interface, can carry out Long-range Data Transmission with Computerized monitor system, and communication protocol can require to set according to user simultaneously.
Described microcomputerized controller is also connected with failure wave-recording module, and record capable of circulation is fault waveform repeatedly, and memory extinguishing arc and each operate condition of overvoltage protection provide sufficient data message for moving optimization and accident analysis.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. an extinguishing arc, extinguishing harmony, selecting line and overvoltage protection system, it is characterized in that: comprise a microcomputerized controller, on described microcomputerized controller, be connected with failure indication module, ground connection indicating module, PT broken string indicating module, resonance modules, operation indicating module, route selection module, harmonic elimination module and liquid crystal panel display module;
Route selection module, when fault occurs, can be carried out data sampling and analyze the zero-sequence current of each circuit rapidly, selects fast faulty line;
Harmonic elimination module is when system generation resonance, and microcomputerized controller sends action command fast, and harmonic elimination apparatus moves immediately, eliminates system resonance;
Liquid crystal panel display module picture is clear, attractive in appearance, and controller powers on to move and can show three-phase line voltage simultaneously, saves three analog voltage tables;
During normal operation, microcomputerized controller constantly detects the voltage signal that PT provides, once system, there is PT broken string, Single Phase Metal ground connection or single-phase arc grounding, the voltage of the auxiliary winding of PT transfers high level to by low level immediately, microcomputerized controller starts interruption, and according to the variation of PT secondary voltage, failure judgement type and separate;
If PT single-phase wire break fault, microcomputerized controller output switch amount contact point signal;
If Single Phase Metal earth fault, microcomputerized controller output switch amount contact point signal, also can require to send action command to vacuum contactor according to user;
If single-phase arc grounding fault, microcomputerized controller sends action command to vacuum contactor, makes vacuum contactor quick acting, eliminates arc light.
2. extinguishing arc, extinguishing harmony, selecting line according to claim 1 and overvoltage protection system; it is characterized in that: described microcomputerized controller is also connected with communication interface module; described communication interface module is RS485 or RS232 communication interface; can carry out Long-range Data Transmission with Computerized monitor system, communication protocol can require to set according to user simultaneously.
3. extinguishing arc, extinguishing harmony, selecting line according to claim 1 and overvoltage protection system; it is characterized in that: described microcomputerized controller is also connected with failure wave-recording module; record capable of circulation is fault waveform repeatedly; memory extinguishing arc and each operate condition of overvoltage protection, provide sufficient data message for moving optimization and accident analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260584.6A CN104078967A (en) | 2014-06-11 | 2014-06-11 | Arc extinction, resonance elimination, line selection and over voltage protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260584.6A CN104078967A (en) | 2014-06-11 | 2014-06-11 | Arc extinction, resonance elimination, line selection and over voltage protection system |
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| CN104078967A true CN104078967A (en) | 2014-10-01 |
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| CN201410260584.6A Pending CN104078967A (en) | 2014-06-11 | 2014-06-11 | Arc extinction, resonance elimination, line selection and over voltage protection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292419A (en) * | 2016-07-22 | 2017-01-04 | 安徽亚辉电气自动化有限公司 | A kind of measuring-controlling and analyzing system based on arc-extinguishing harmonic-eliminating cabinet |
| CN106324407A (en) * | 2016-09-28 | 2017-01-11 | 国家电网公司 | Voltage transformer's second harmonic elimination device detector |
| CN106505546A (en) * | 2016-11-16 | 2017-03-15 | 安徽合凯电气科技股份有限公司 | High-speed switch type arc-extinguishing resonance-extinguishing device and its operation method |
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| CN201417945Y (en) * | 2009-03-17 | 2010-03-03 | 郭道胜 | Integrated device for arc extinction, harmonic elimination and wire selection for electricity grid |
| CN202309066U (en) * | 2011-10-11 | 2012-07-04 | 合肥伟创电力技术有限公司 | Intelligent fast arc-extinction harmonic-extinction line selection and overvoltage protection device |
| CN202678928U (en) * | 2012-07-19 | 2013-01-16 | 安徽徽凯电气有限公司 | Device for arc extinction, resonance elimination, wire selection and overvoltage protection |
| CN203385813U (en) * | 2013-06-24 | 2014-01-08 | 华北电力大学（保定） | CPLD-based single-phase ground fault indicator |
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| CN201417945Y (en) * | 2009-03-17 | 2010-03-03 | 郭道胜 | Integrated device for arc extinction, harmonic elimination and wire selection for electricity grid |
| CN202309066U (en) * | 2011-10-11 | 2012-07-04 | 合肥伟创电力技术有限公司 | Intelligent fast arc-extinction harmonic-extinction line selection and overvoltage protection device |
| CN202678928U (en) * | 2012-07-19 | 2013-01-16 | 安徽徽凯电气有限公司 | Device for arc extinction, resonance elimination, wire selection and overvoltage protection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292419A (en) * | 2016-07-22 | 2017-01-04 | 安徽亚辉电气自动化有限公司 | A kind of measuring-controlling and analyzing system based on arc-extinguishing harmonic-eliminating cabinet |
| CN106292419B (en) * | 2016-07-22 | 2018-07-24 | 安徽亚辉电气自动化有限公司 | A kind of measuring-controlling and analyzing system based on arc-extinguishing harmonic-eliminating cabinet |
| CN106324407A (en) * | 2016-09-28 | 2017-01-11 | 国家电网公司 | Voltage transformer's second harmonic elimination device detector |
| CN106324407B (en) * | 2016-09-28 | 2023-07-25 | 国家电网公司 | Detector for secondary resonance elimination device of voltage transformer |
| CN106505546A (en) * | 2016-11-16 | 2017-03-15 | 安徽合凯电气科技股份有限公司 | High-speed switch type arc-extinguishing resonance-extinguishing device and its operation method |
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Application publication date: 20141001 |