CN104124680A - Arc harmonic elimination, line selection and overvoltage protection device - Google Patents
Arc harmonic elimination, line selection and overvoltage protection device Download PDFInfo
- Publication number
- CN104124680A CN104124680A CN201410252550.2A CN201410252550A CN104124680A CN 104124680 A CN104124680 A CN 104124680A CN 201410252550 A CN201410252550 A CN 201410252550A CN 104124680 A CN104124680 A CN 104124680A
- Authority
- CN
- China
- Prior art keywords
- voltage
- extinguishing
- arc
- overvoltage protection
- overvoltage
- 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.)
- Pending
Links
Abstract
The invention provides an arc harmonic elimination, line selection and overvoltage protection device, and belongs to the electrical technical field. The device comprises an isolation handcart; a line incoming end of the isolation handcart is connected with a three-phase main bus, and while a line outgoing end of the isolation handcart is connected with a large-capacity overvoltage protection device and a high-voltage vacuum contactor; a large-capacity combined overvoltage protection device and the high-voltage vacuum contactor are grounded; a high-voltage fuse and a voltage transformer are mounted on the isolation handcart; the voltage transformer is connected with an arc harmonic elimination and line selection integrated controller. The device is stable and fast to act and can limit well the arc grounding overvoltage, resonant overvoltage, operation overvoltage and atmospheric over-voltage; zero-sequence current of each line is subjected to data sampling and analyzing through the arc harmonic elimination and line selection integrated controller, a line suffering from fault can be quickly selected, and thus the problems of slow speed at line selection and poor accuracy of line selection under arc grounding of the conventional line selection device can be overcome.
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.
Background technology
At present, what the electric power system great majority of China 3～35KV adopted is isolated neutral operational mode, this operational mode allows the short time power supply reliability that operates with failure high in the time of single-phase earthing, the capacitance current producing when single-phase earthing is very little, and common line selection device for low current cannot carry out the selection of ground path at all.The particularly use of arc suppression coil and arc extinction cabinet, the difficulty of more having aggravated small current line selection, during particularly for arc grounding, has increased the difficulty of route selection especially, even cannot carry out route selection.Having stable behavior is selected fast, fast faulty line and can be carried out to arc grounding overvoltage, resonance overvoltage, switching overvoltage, atmospheric over-voltage fine restriction in addition arc-extinguishing harmonic-eliminating and excess voltage preventer.
Summary of the invention
The extinguishing arc, extinguishing harmony, selecting line and the overvoltage protection that provide a kind of having stable behavior to select fast, fast faulty line and can carry out to arc grounding overvoltage, resonance overvoltage, switching overvoltage, atmospheric over-voltage fine restriction are provided technical problem to be solved by this invention.
Technical problem to be solved by this invention adopts following s technical scheme to realize:
A kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection; comprise isolation handcart; the inlet wire termination three-phase main bus bar of described isolation handcart; the leading-out terminal of described isolation handcart respectively with can hold overvoltage protection greatly, high-pressure vacuum contactor is connected; describedly can hold Combined over-voltage protection device and high-pressure vacuum contactor ground connection greatly; on described isolation handcart, high-tension fuse and voltage transformer are installed, described voltage transformer is connected with extinguishing arc, extinguishing harmony, selecting line integrated controller.
The leading-out terminal of described isolation handcart is connected by high-voltage and current-limitation fuse high-pressure vacuum contactor, and high-pressure vacuum contactor passes current transformer ground connection by electric current.
The described large Combined over-voltage protection device that can hold adopts series connection znr and discharging gap, composition four star connections.
Described high-tension fuse is connected with voltage transformer, the neutral-point solid ground of voltage transformer.
As shown from the above technical solution, the present invention eliminates arc overvoltage by high-pressure vacuum contactor K; Eliminate atmospheric over-voltage and switching overvoltage by the large Combined over-voltage protection device that can hold; Thereby destroy condition of resonance elimination resonance overvoltage by dropping into different harmonic elimination resistance.
The invention has the beneficial effects as follows: the present invention not only having stable behavior is quick, and can well limit arc grounding overvoltage, resonance overvoltage, switching overvoltage, atmospheric over-voltage; By extinguishing arc, extinguishing harmony, selecting line integrated controller, the zero-sequence current of each circuit carried out data sampling and analyzed, selecting 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.
Brief description of the drawings
Fig. 1 is principle of the invention figure.
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; comprise isolation handcart GL; the inlet wire termination three-phase main bus bar of isolation handcart GL; the leading-out terminal of isolation handcart GL respectively with can hold Combined over-voltage protection device SHZB greatly, high-pressure vacuum contactor K is connected; can hold greatly Combined over-voltage protection device SHZB and high-pressure vacuum contactor K ground connection; on described isolation handcart GL, high-tension fuse FU1 and voltage transformer pt are installed; described voltage transformer pt is connected with extinguishing arc, extinguishing harmony, selecting line integrated controller, as shown in Figure 1.The present invention, in the time of system generation arc grounding, is converted into metallic earthing by arc grounding in 30ms, by arc grounding overvoltage Limiting on-Line Voltage level.In this device, can hold greatly Combined over-voltage protection device SHZB and adopt series connection znr and discharging gap, can effectively limit various overvoltage and absorb overvoltage energy large, 2ms square wave current can reach 800A.Can select 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.
The leading-out terminal of isolation handcart GL is connected with high-pressure vacuum contactor K by high-voltage and current-limitation fuse FU2, and high-pressure vacuum contactor K is by Current Transmit ground connection.Described high-tension fuse FU1 is connected with voltage transformer pt, the neutral ground of voltage transformer pt, and the secondary outgoing line of Current Transmit is connected with ammeter.
When the normal operation of this device, microcomputerized controller is by gathering the secondary singal of voltage transformer pt, the ruuning situation of real-time monitoring system voltage, when detecting that large fluctuation appears in voltage transformer pt secondary voltage, make corresponding processing according to character and the kind of the amplitude of the amplitude of voltage transformer pt three-phase voltage and residual voltage and the next comprehensive failure judgement of angle: be judged as arc grounding, microcomputerized controller sends instruction, high-pressure vacuum contactor vacuum earthed switch K closes a floodgate, the voltage of fault phase is reduced to zero potential, simultaneously by the level of the limiting voltage on-Line Voltage of healthy phases, system can be operated with failure 2 hours, for the time has been striven in the back brake operation of equipment, while being judged as system resonance, microcomputerized controller drops into different harmonic elimination resistance according to the character of resonance and eliminates resonance, while being judged as metallic earthing, the route selection module of extinguishing arc, extinguishing harmony, selecting line integrated controller shows route selection result in the LCDs of microcomputerized controller, by RS485 interface, the judged result of microcomputerized controller is passed to backstage simultaneously and reports to the police.This device can be remembered the data such as 50 fault types, time of origin, for accident analysis and processing provide information; Be furnished with RS485 microcomputer communication interface, can realize remote data communication with user's Computerized monitor system.Integrated controller, the variation of using vacuum earthed switch action front and back electric current.
More than show and described general 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 (4)
1. an extinguishing arc, extinguishing harmony, selecting line and overvoltage protection, it is characterized in that: comprise isolation handcart GL), the inlet wire termination three-phase main bus bar of described isolation handcart (GL), the leading-out terminal of described isolation handcart (GL) can hold overvoltage protection (SHZB) with large respectively, high-pressure vacuum contactor (K) is connected, describedly can hold Combined over-voltage protection device (SHZB) and high-pressure vacuum contactor (K) ground connection greatly, high-tension fuse (FU1) and voltage transformer (PT) are installed on described isolation handcart (GL), described voltage transformer (PT) is connected with extinguishing arc, extinguishing harmony, selecting line integrated controller (WK).
2. extinguishing arc, extinguishing harmony, selecting line according to claim 1 and overvoltage protection; it is characterized in that: the leading-out terminal of described isolation handcart (GL) is connected with high-pressure vacuum contactor (K) by high-voltage and current-limitation fuse (FU2), and high-pressure vacuum contactor (K) passes current transformer (CT) ground connection by electric current.
3. extinguishing arc, extinguishing harmony, selecting line according to claim 1 and overvoltage protection; it is characterized in that: the described large Combined over-voltage protection device (SHZB) that can hold adopts series connection znr and discharging gap, composition four star connections.
4. extinguishing arc, extinguishing harmony, selecting line according to claim 1 and overvoltage protection; it is characterized in that: described high-tension fuse (FU1) is connected with voltage transformer (PT), the neutral-point solid ground of voltage transformer (PT).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410252550.2A CN104124680A (en) | 2014-06-09 | 2014-06-09 | Arc harmonic elimination, line selection and overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410252550.2A CN104124680A (en) | 2014-06-09 | 2014-06-09 | Arc harmonic elimination, line selection and overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104124680A true CN104124680A (en) | 2014-10-29 |
Family
ID=51769997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410252550.2A Pending CN104124680A (en) | 2014-06-09 | 2014-06-09 | Arc harmonic elimination, line selection and overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104124680A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105098759A (en) * | 2014-11-21 | 2015-11-25 | 芜湖蓝宙电子科技有限公司 | Microcomputer arc-extinguishing resonance-elimination overvoltage protection device |
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
| CN111327034A (en) * | 2018-12-17 | 2020-06-23 | 安徽伟创电力科技有限公司 | Novel high-efficiency arc extinction and overvoltage protection device |
| CN113097986A (en) * | 2021-03-31 | 2021-07-09 | 国网内蒙古东部电力有限公司电力科学研究院 | Protection method, device and system for primary harmonic elimination device of distribution network voltage transformer |
-
2014
- 2014-06-09 CN CN201410252550.2A patent/CN104124680A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098759A (en) * | 2014-11-21 | 2015-11-25 | 芜湖蓝宙电子科技有限公司 | Microcomputer arc-extinguishing resonance-elimination overvoltage protection 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 |
| CN111327034A (en) * | 2018-12-17 | 2020-06-23 | 安徽伟创电力科技有限公司 | Novel high-efficiency arc extinction and overvoltage protection device |
| CN111327034B (en) * | 2018-12-17 | 2022-02-18 | 安徽伟创电力科技有限公司 | Arc extinction and overvoltage protection device |
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
| CN113097986A (en) * | 2021-03-31 | 2021-07-09 | 国网内蒙古东部电力有限公司电力科学研究院 | Protection method, device and system for primary harmonic elimination device of distribution network voltage transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104991162B (en) | A kind of positioning device and application method of single-phase grounded malfunction in grounded system of low current | |
| CN201408236Y (en) | Power distribution network failure locating device | |
| CN106655120A (en) | Intelligent ground protection method and system for neutral point of power distribution network | |
| CN104124680A (en) | Arc harmonic elimination, line selection and overvoltage protection device | |
| CN104678260A (en) | System and method for single-phase grounding line selection of small current grounding system | |
| CN106526415A (en) | High-resistance ground fault line selection method for small-current grounding system | |
| CN203135436U (en) | Intelligent ground resistor complete equipment | |
| CN105356441A (en) | Intelligent PT harmonic elimination and phase selection method and device | |
| CN204012685U (en) | A kind of 10kV electrical network earth fault treatment facility | |
| CN201887468U (en) | Device for limiting all overvoltage | |
| CN201008096Y (en) | Arc extinguishing compensation mechanism for neutral point non-effective earthing power network | |
| CN104052044A (en) | Voltage collecting device of overvoltage suppression cabinet | |
| CN201859161U (en) | Asymmetric current source | |
| CN105510768B (en) | A kind of trouble shoot method of service conductor ground connection | |
| CN103217627A (en) | Earth fault positioning method of earth fault positioning system | |
| CN102646973A (en) | Distribution network electric shock protection method and device | |
| CN201054500Y (en) | Direction ground arc-elimination and cable selection suite device | |
| CN103050960B (en) | Pulse selection coil compensating and failure processing device and working method thereof | |
| CN204287384U (en) | A kind of microcomputer type small current earthing wire-selecting control device | |
| CN103001194A (en) | On-line line fault monitoring and protection device and protection method thereof | |
| CN204333950U (en) | A kind of electric power system two CSTR single-phase earthing extinguishing arc equipment | |
| Li et al. | Research on Single-phase Grounding Fault Handling True Test of Primary and Secondary Integration Circuit Breaker | |
| CN205404697U (en) | Multi -functional high voltage insulation on -line monitoring device | |
| CN107561406A (en) | It is a kind of based on fault line selection method for single-phase-to-ground fault of the multiterminal than width phase comparing method | |
| CN107367670A (en) | A kind of fault line selection method for single-phase-to-ground fault based on quintuple harmonics electric current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141029 |