CN100440680C - Switching low-voltage comprehensive switch of electric power capacitor - Google Patents
Switching low-voltage comprehensive switch of electric power capacitor Download PDFInfo
- Publication number
- CN100440680C CN100440680C CNB200610038349XA CN200610038349A CN100440680C CN 100440680 C CN100440680 C CN 100440680C CN B200610038349X A CNB200610038349X A CN B200610038349XA CN 200610038349 A CN200610038349 A CN 200610038349A CN 100440680 C CN100440680 C CN 100440680C
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- Prior art keywords
- power capacitor
- electric power
- current
- switching low
- voltage comprehensive
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- 239000003990 capacitor Substances 0.000 title claims abstract description 36
- 238000004891 communication Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Keying Circuit Devices (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The present invention discloses a switching low-voltage comprehensive switch of an electric power capacitor, which is characterized in that the present invention is provided with at least two electromagnetic relays, wherein contact point loops of the electromagnetic relays are connected with a miniature current mutual inductor and a small circuit breaker, and the miniature current mutual inductor is connected with a miniature controller. The present invention has the advantages of novel and compact structure, powerful function, high reliability, small size and low price.
Description
Technical field:
The present invention relates to the device for switching of switching low-voltage electric power capacitor; be a kind of group switch equipment of the switching low-voltage electric power capacitor based on electromagnetic type relay; specifically, be a kind of comprehensive switch with switching low-voltage electric power capacitor of control, protection, measurement, signal and functions such as communicating by letter.
Background technology:
Existing switching low-voltage electric power capacitor switch, basically have only throwing (low voltage power capacitor is put into operation), cut the switching function of (making low voltage power capacitor move back fortune) low voltage power capacitor, for the reliable throwing that guarantees low voltage power capacitor, cut and safe operation, must components and parts such as serial connection fuse, thermal relay and reactor in the throwing of low voltage power capacitor, switchback road, it exists, and function is strong, wiring is complicated, overall volume is big, power loss is high, resource consumption is big, and shortcoming such as operation maintenance inconvenience.
Summary of the invention:
The purpose of this invention is to provide strong, the simple for structure novelty of a kind of function, reliability height, low in energy consumption, volume is little, price is low and operation maintenance switching low-voltage comprehensive switch of electric power capacitor easily.
Technical solution of the present invention is: at least two electromagnetic type relays are arranged, and the contact loop of electromagnetic type relay is connected to micro-transformer of current and miniature circuit breaker; Micro-transformer of current is connected to microcontroller.
The current monitoring circuit of the microcontroller described in the present invention connects micro-transformer of current, and the electric voltage observation circuit of controller connects contact two side loops of electromagnetic relay, the controlling output circuit of controller connects the coil of electromagnetic type relay.Solenoid and its contact of the current protection automatic trip of miniature circuit breaker are in series; Micro-transformer of current adopts punching, and promptly the lead of tested electric current therefrom passes; Electromagnetic type relay adopts the magnetic freeze mode, the change of junction closure or off-state, and the pulse voltage polarity that is added on the coil by change realizes; Microcontroller is a core with the microprocessor, and communication interface is arranged.
Beneficial effect of the present invention is: strong, the simple for structure novelty of function, reliability height, power consumption and resource consumption is few, volume is little, price is low and operation maintenance is convenient.
The invention will be further described below in conjunction with drawings and Examples:
Description of drawings:
Accompanying drawing is the operation principle schematic diagram of a kind of switching low-voltage electric power capacitor switch of the present invention.
Embodiment:
Accompanying drawing has been described one embodiment of the present of invention, in the drawings: XT
1Be input terminal, the XT of switch
2It is the outlet terminal of switch; KA
1, KA
2Be two electromagnetic type relays, wherein S is the one docking point, and L is its coil; QS is a miniature circuit breaker, and wherein S is the one docking point, and L is its solenoid; TA
1, TA
2It is micro-transformer of current; A is a microcontroller, wherein A
1Be working power circuit and input voltage detection circuit, A
2Be electromagnetic type relay contact two side voltage detecting circuits, A
3Be the adhesive of control electromagnetic type relay contact, discharge circuit, A
4Be switch loop current testing circuit, A
5Be communication interface circuit, A
6Be the control input interface circuit, A
7It then is the man-machine interface circuit.
The implementation procedure of the controlled function of switching low-voltage comprehensive switch of electric power capacitor: XT
1Connect low pressure (0.4kV) three phase mains, XT
2Connect low voltage power capacitor; Manually close QS, A
1Work, A (comprises A
2～A
7) have working power promptly to work; The low voltage power capacitor that puts into operation if desired is to A
5Send out a combined floodgate information or to A
6Send out a combined floodgate level signal, pass through A after the smart circuit among the A is received
3Send closing pulse, KA
1And KA
2Junction closure, the low voltage power capacitor operation of promptly switching on; For reducing KA
1, KA
2What produce during junction closure shoves, and A passes through A
2Detect KA
1Or KA
2In the zero crossing moment of its contact two top-cross stream voltage, simultaneously according to KA
1Or KA
2The time chien shih KA of adhesive
1Or KA
2Junction closure when its contact two side voltages are zero, thereby " zero throws " function of realization " zero switching "; After low voltage power capacitor energising operation, make it move back fortune if desired, then to A
5Send out a separating brake information or to A
6Send out a separating brake level signal, pass through A after the smart circuit among the A is received
3Send the separating brake pulse, KA
1And KA
2Contact promptly disconnect, low voltage power capacitor has a power failure and out of service; In order to reduce KA
1, KA
2The impact that produces when contact disconnects, A passes through A
4Detect KA
1, KA
2The alternating current zero crossing moment in the contact loop is simultaneously according to KA
1Or KA
2Release time make KA
1Or KA
2When by its contact electric current being zero, disconnect, thus " zero cuts " function of realization " zero switching ".
The defencive function implementation procedure of switching low-voltage comprehensive switch of electric power capacitor: A passes through A
1Power supply voltage is measured, if overtension, cross low or phase shortage, when severe three-phase is uneven then the low voltage power capacitor or behind the low voltage power capacitor that puts into operation it is moved back fortune of not putting into operation is realized the voltage-type protection; When electric current was big especially in the loop, L produced big electromagnetic attraction among the QS, made the QS tripping operation, and realization electric current speed is cut protection; A passes through A
4, TA
1, TA
2Each phase operating current for low voltage power capacitor is measured, if electric current is big or the serious imbalance of three-phase current then move back the fortune low voltage power capacitor, realizes the overcurrent protection and the unbalance protection of three-phase current of low voltage power capacitor.
The measurement of switching low-voltage comprehensive switch of electric power capacitor, the implementation procedure of semiotic function: A passes through A
1Can measure supply voltage, pass through A
4Measure low voltage power capacitor three-phase operating current, and pass through A
7Show; The throwing of low voltage power capacitor, cut status signal and various protection actuating signal is passed through A
7Show.
The communication function of switching low-voltage comprehensive switch of electric power capacitor then is by soft, hardware communication interface A
5Realize.
Claims (6)
1, a kind of switching low-voltage comprehensive switch of electric power capacitor is characterized in that: at least two electromagnetic type relays are arranged, and the contact loop of electromagnetic type relay is connected to micro-transformer of current and miniature circuit breaker; Micro-transformer of current is connected to microcontroller; Current monitoring circuit in the microcontroller connects micro-transformer of current, electric voltage observation circuit and succeeds the coil that electrical equipment contact two side loops, controlling output circuit connect electromagnetic relay.
2, switching low-voltage comprehensive switch of electric power capacitor according to claim 1 is characterized in that: the solenoid of the current protection automatic trip of miniature circuit breaker is connected in the contact loop of miniature circuit breaker.
3, switching low-voltage comprehensive switch of electric power capacitor according to claim 1 is characterized in that: micro-transformer of current adopts punching, and promptly the lead by tested electric current therefrom passes.
4, switching low-voltage comprehensive switch of electric power capacitor according to claim 1 is characterized in that: electromagnetic type relay adopts the magnetic freeze mode.
5, switching low-voltage comprehensive switch of electric power capacitor according to claim 1 is characterized in that: microcontroller is core with the microprocessor, and communication interface is arranged.
6, switching low-voltage comprehensive switch of electric power capacitor according to claim 1 is characterized in that: electromagnetic type relay has two or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610038349XA CN100440680C (en) | 2006-02-17 | 2006-02-17 | Switching low-voltage comprehensive switch of electric power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610038349XA CN100440680C (en) | 2006-02-17 | 2006-02-17 | Switching low-voltage comprehensive switch of electric power capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1819391A CN1819391A (en) | 2006-08-16 |
| CN100440680C true CN100440680C (en) | 2008-12-03 |
Family
ID=36919145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610038349XA Expired - Fee Related CN100440680C (en) | 2006-02-17 | 2006-02-17 | Switching low-voltage comprehensive switch of electric power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100440680C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0746763A (en) * | 1993-05-26 | 1995-02-14 | Meidensha Corp | Reactive power regulator |
| CN1151606A (en) * | 1995-12-07 | 1997-06-11 | 刘旭东 | Rated current regulating leakage automatic circuit breaker |
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN1423388A (en) * | 2001-12-07 | 2003-06-11 | 广州擎天电气控制实业有限公司 | Motor open-phase protection circuit |
| CN1571229A (en) * | 2004-04-29 | 2005-01-26 | 江苏省电力公司泰州供电公司 | Switching fault detection control device for compensation capacitance |
| CN2702083Y (en) * | 2004-06-24 | 2005-05-25 | 西安森宝电气工程有限公司 | Pressure regulation and reactive compensation controlling device of beam-pumping unit |
| CN2713710Y (en) * | 2004-07-07 | 2005-07-27 | 温州市万成电子有限公司 | Combination switch for switching capacitors |
-
2006
- 2006-02-17 CN CNB200610038349XA patent/CN100440680C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0746763A (en) * | 1993-05-26 | 1995-02-14 | Meidensha Corp | Reactive power regulator |
| CN1151606A (en) * | 1995-12-07 | 1997-06-11 | 刘旭东 | Rated current regulating leakage automatic circuit breaker |
| JPH10248156A (en) * | 1997-03-04 | 1998-09-14 | Toshiba Corp | Circuit breaker with leak alarm |
| CN1423388A (en) * | 2001-12-07 | 2003-06-11 | 广州擎天电气控制实业有限公司 | Motor open-phase protection circuit |
| CN1571229A (en) * | 2004-04-29 | 2005-01-26 | 江苏省电力公司泰州供电公司 | Switching fault detection control device for compensation capacitance |
| CN2702083Y (en) * | 2004-06-24 | 2005-05-25 | 西安森宝电气工程有限公司 | Pressure regulation and reactive compensation controlling device of beam-pumping unit |
| CN2713710Y (en) * | 2004-07-07 | 2005-07-27 | 温州市万成电子有限公司 | Combination switch for switching capacitors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1819391A (en) | 2006-08-16 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU MODERN POWER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: XIANDAI ELECTRIC POWER CAPACITORS CO., LTD., JIANGSU |
|
| CP03 | Change of name, title or address |
Address after: 226005 Nantong City, Jiangsu Province modern power road, No. 1 Patentee after: JIANGSU MODERN ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 226005 No. 395 Renmin West Road, Jiangsu, Nantong Patentee before: JIANGSU MODERN CAPACITOR Co.,Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20060816 Assignee: Nantong golden well electric complete equipment Co.,Ltd. Assignor: JIANGSU MODERN ELECTRIC TECHNOLOGY Co.,Ltd. Contract record no.: 2017320000154 Denomination of invention: Switching low-voltage comprehensive switch of electric power capacitor Granted publication date: 20081203 License type: Common License Record date: 20170628 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Switching low-voltage comprehensive switch of electric power capacitor Effective date of registration: 20200521 Granted publication date: 20081203 Pledgee: Bank of Jiangsu Co.,Ltd. Nantong Gangzha sub branch Pledgor: JIANGSU MODERN ELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2020980002372 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210811 Granted publication date: 20081203 Pledgee: Bank of Jiangsu Co.,Ltd. Nantong Gangzha sub branch Pledgor: JIANGSU MODERN ELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2020980002372 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Switching low voltage power capacitor integrated switch Effective date of registration: 20210812 Granted publication date: 20081203 Pledgee: Bank of Jiangsu Co.,Ltd. Nantong Gangzha sub branch Pledgor: JIANGSU MODERN ELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2021320000175 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20220217 |