CN105932659A - Intelligent switch arc suppression and over-voltage protection device - Google Patents
Intelligent switch arc suppression and over-voltage protection device Download PDFInfo
- Publication number
- CN105932659A CN105932659A CN201610490401.9A CN201610490401A CN105932659A CN 105932659 A CN105932659 A CN 105932659A CN 201610490401 A CN201610490401 A CN 201610490401A CN 105932659 A CN105932659 A CN 105932659A
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- CN
- China
- Prior art keywords
- voltage
- phase
- circuit breaker
- vacuum circuit
- arc suppression
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides an intelligent switch arc suppression and over-voltage protection device, and relates to the technical field of arc suppression and harmonic elimination of power systems. The intelligent switch arc suppression and over-voltage protection device comprises a vacuum circuit breaker capable of carrying out monophasic action, a voltage transformer, a three-phase combined over-voltage protector, a microcomputer arc suppression controller, a high-voltage fuse and a zero-sequence current transformer, wherein three-phase ports of the three-phase combined over-voltage protector are connected with three phases of the high-voltage fuse respectively and then connected with high-voltage isolation switches; a ground terminal is connected with the voltage transformer and then grounded; a voltage transformer control end of the microcomputer arc suppression controller is connected with the voltage transformer; a vacuum contactor control end is connected with the vacuum circuit breaker capable of carrying out monophasic action; the three-phase ports of the vacuum circuit breaker capable of carrying out monophasic action are connected with the three-phase high-voltage isolation switches respectively; and the zero-sequence current transformer is arranged between the ground terminal and a ground point. The fault phase and the fault type can be judged and displayed according to a signal provided by the voltage transformer; the action speed is high; and the problems of arc suppression, harmonic elimination and the like in the over-voltage protection device are effectively solved.
Description
Technical field
The present invention relates to 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 earthings, neutral by arc extinction coil grounding or neutral point are in the power system of high resistance ground; owing to all kinds of overvoltage protection devices are 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 causes 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 constitute certain threat to life-span and the operation safety of power system device.
Summary of the invention
It is an object of the invention to provide a kind of quick action, can extinguishing arc, the overvoltage protection of harmonic elimination.
In order to solve the problem in the presence of background technology, the present invention is by the following technical solutions: it includes 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 includes that voltage transformer controls end, vacuum contactor controls end；
The three-phase port of described three-phase combined voltage protector LBP three being connected and be followed by three-phase high-voltage isolating switch with high-tension fuse RD respectively, three phase combined over-voltage protector LBP earth terminal be connected with voltage transformer pt after ground connection, the voltage transformer of microcomputer arc extinguishing controller ZK controls end and is connected with voltage transformer pt, vacuum contactor controls end and 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 vacuum circuit breaker LKJKZ earth terminal and the earth point of monophasic action.
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, unstable arc grounding is converted into stable metallic ground, the overvoltage that arc grounding is caused limits online voltage levvl, it is greatly reduced single-phase earthing arc light duration and the insulation breakdown short circuit accident thus caused and Explosion of on Arrester accident, with the vacuum circuit breaker of monophasic action can replacing traditional high-voltage and current-limitation fuse and add the extinguishing arc scheme of AC vacuum contactor, decrease the workload of regular maintenance and change the expense of fuse.
The intelligent switch extinguishing arc of the present invention and overvoltage protection; with microcomputer arc extinguishing controller as core control part; the signal provided according to voltage transformer judges that fault is separate and fault type showing; 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 the electrical schematic diagram of the present invention.
Detailed description of the invention
See Fig. 1; a kind of intelligent switch extinguishing arc and overvoltage protection, it includes 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 includes that voltage transformer controls end, vacuum contactor controls end；
The three-phase port of described three-phase combined voltage protector LBP three being connected and be followed by three-phase high-voltage isolating switch with high-tension fuse RD respectively, three phase combined over-voltage protector LBP earth terminal be connected with voltage transformer pt after ground connection, the voltage transformer of microcomputer arc extinguishing controller ZK controls end and is connected with voltage transformer pt, vacuum contactor controls end and 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 vacuum circuit breaker LKJKZ earth terminal and the earth point of monophasic action.
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, unstable arc grounding is converted into stable metallic ground, the overvoltage that arc grounding is caused limits online voltage levvl, it is greatly reduced single-phase earthing arc light duration and the insulation breakdown short circuit accident thus caused and Explosion of on Arrester accident, with the vacuum circuit breaker of monophasic action can replacing traditional high-voltage and current-limitation fuse and add the extinguishing arc scheme of AC vacuum contactor, decrease the workload of regular maintenance and change the expense of fuse.
The intelligent switch extinguishing arc of the present invention and overvoltage protection; with microcomputer arc extinguishing controller as core control part; the signal provided according to voltage transformer judges that fault is separate and fault type showing; 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 includes 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) includes that voltage transformer controls end, vacuum contactor controls end.
2. the three-phase port of the three-phase combined voltage protector (LBP) described in three being connected and be followed by three-phase high-voltage isolating switch with high-tension fuse (RD) respectively, three phase combined over-voltage protector (LBP) earth terminal be connected with voltage transformer (PT) after ground connection, the voltage transformer of microcomputer arc extinguishing controller (ZK) controls end and is connected with voltage transformer (PT), vacuum contactor controls end and 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 |
|---|---|---|---|
| CN201610490401.9A CN105932659A (en) | 2016-06-29 | 2016-06-29 | Intelligent switch arc suppression and over-voltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610490401.9A CN105932659A (en) | 2016-06-29 | 2016-06-29 | Intelligent switch arc suppression and over-voltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932659A true CN105932659A (en) | 2016-09-07 |
Family
ID=56828917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610490401.9A Withdrawn CN105932659A (en) | 2016-06-29 | 2016-06-29 | Intelligent switch arc suppression and over-voltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932659A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110063011A (en) * | 2016-11-17 | 2019-07-26 | 东芝三菱电机产业***株式会社 | Power-converting device |
-
2016
- 2016-06-29 CN CN201610490401.9A patent/CN105932659A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110063011A (en) * | 2016-11-17 | 2019-07-26 | 东芝三菱电机产业***株式会社 | Power-converting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160907 |