CN204030614U - A kind of capacitor switching combination switch - Google Patents
A kind of capacitor switching combination switch Download PDFInfo
- Publication number
- CN204030614U CN204030614U CN201420505933.1U CN201420505933U CN204030614U CN 204030614 U CN204030614 U CN 204030614U CN 201420505933 U CN201420505933 U CN 201420505933U CN 204030614 U CN204030614 U CN 204030614U
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- China
- Prior art keywords
- circuit
- single chip
- magnetic latching
- latching relay
- machine controlling
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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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Abstract
The utility model is a kind of capacitor switching combination switch, comprise compensation condenser, bidirectional triode thyristor, the control loop of the major loop of magnetic latching relay composition and single chip machine controlling circuit composition, described single chip machine controlling circuit comprises control circuit of bidirectional thyristor, magnetic latching relay control circuit, compensation condenser control circuit, voltage detecting circuit, zero cross detection circuit, signal input circuit, described single chip machine controlling circuit is according to zero cross detection circuit, the relevant signal that signal input circuit and voltage detecting circuit obtain, output control signal makes compensation condenser in the time of supply voltage or load current, drop into or withdraw from, single chip machine controlling circuit can also carry out power phase shortage automatically according to the failure condition of system simultaneously, have a power failure, incoming call, compensation condenser short circuit, the various defencive functions such as open circuit also send corresponding alarm signal, it is a kind of working stability, the intelligent capacitor switching combination switch of perfect performance.
Description
Technical field
The utility model relates to a kind of power switch, relates in particular to a kind of for reactive compensating capacitor combination switch.
Background technology
In electric power system, mostly enterprise customer is motor, the inductive loads such as arc furnace, this will consume reactive energy, the power factor of power supply grid is reduced, loss increases, if national regulation power factor is lower than 0.7 for this reason, power supply department can stop enterprise power supply, this just requires enterprise to take measures, improve power factor, carry out reactive power compensation, and reactive power compensation adopts the method for parallel capacitor in electrical network to realize conventionally, the switching of compensation condenser is to adopt contactor to carry out the earliest, during due to switched capacitor, can produce very large rush of current, adopted afterwards special capacitor switching contactor, be that electric capacity accesses a bleeder resistor while just having dropped into impulse current is released, and then by closed contactor input compensation capacitor operation, developed into again afterwards the rush of current while adopting silicon control zero-cross point switching to reduce capacitor switching, but because silicon controlled heating problem is difficult to solve, to making, controllable silicon volume is large, and easily damage.
Summary of the invention
In order to overcome the deficiency of conventional art, the utility model provides a kind of volume little, working stability is reliable, by monolithic processor controlled capacitor switching combination switch, comprise compensation condenser, bidirectional triode thyristor, the control loop of the major loop of magnetic latching relay composition and single chip machine controlling circuit composition, described single chip machine controlling circuit comprises control circuit of bidirectional thyristor, magnetic latching relay control circuit, compensation condenser control circuit, voltage detecting circuit, zero cross detection circuit, signal input circuit, photoelectric coupling circuit, described single chip machine controlling circuit is according to zero cross detection circuit, the relevant signal that signal input circuit and voltage detecting circuit obtain, by carrying out analytical calculation with the condition value of setting, output control signal, conducting bidirectional triode thyristor and magnetic latching relay in the time of supply voltage zero passage, due to the hysteresis quality of magnetic latching relay action, after bidirectional triode thyristor conducting 0.1-1 second, magnetic latching relay is then closed, compensation condenser is dropped into, when described single chip machine controlling circuit is compensated withdrawing from after signal or various fault-signal of capacitor, single chip machine controlling circuit sends after control signal drops into bidirectional triode thyristor and magnetic latching relay is disconnected again, when bidirectional triode thyristor is again at current over-zero after magnetic latching relay disconnects, disconnect and compensation condenser is withdrawn from.
Further arrange, described bidirectional triode thyristor and magnetic latching relay can be one group or three groups, and to form single-phase or three phase capacitance switching combination switch, described magnetic latching relay also can be contactor or electromagnetic relay.
Further arrange, described signal input circuit, zero cross detection circuit and voltage detecting circuit is all to adopt photoelectrical coupler input single chip machine controlling circuit, this is on the one hand to carry out forceful electric power isolation, is to be pulse digital signal because single chip machine controlling circuit needs on the other hand.
Further arrange, described bidirectional triode thyristor triggers control by pulse signal.
Further arrange; described compensation condenser can be single-phase or three-phase; can be one or more; each capacitor carries out switching control by a corresponding capacitor switching combination switch; the voltage signal of the compensation condenser that described single chip machine controlling circuit can detect according to voltage detecting circuit and the input-signal judging of zero cross detection circuit go out the failure condition of electric power system to realize power phase shortage, power failure, incoming call, and the various defencive functions such as compensation condenser short circuit, open circuit also send corresponding alarm signal.
The beneficial effect that above structure is brought is: 1) because major loop adopts bidirectional triode thyristor in parallel with magnetic latching relay, when dropping into, first dropped into when the supply voltage zero passage by bidirectional triode thyristor by compensation condenser, after moment time delay, magnetic latching relay then drops into and bidirectional triode thyristor is withdrawn from automatically and make compensation condenser work, magnetic latching relay is that voltage is to drop into for 1 o'clock after bidirectional triode thyristor drops into, can not produce impulse current, and once bidirectional triode thyristor also can exit automatically after magnetic latching relay input, by the accurate control of single chip machine controlling circuit, make capacitor switching combination switch really accomplish operating passing zero, while is due to the use of magnetic latching relay, after building-out capacitor is devoted oneself to work, not needing to consume electric energy maintains, there is energy-saving effect, 2) owing to having adopted high performance single chip machine controlling circuit, make system there are the various comprehensive protection functions such as power phase shortage, power failure, incoming call, compensation condenser short circuit, open circuit, compensation condenser has really been accomplished operating passing zero simultaneously, can produce hardly the impact of shoving, making compensation circuit working stability reliable, is a kind of intelligent capacitor switching combination switch of perfect performance.
Brief description of the drawings
Fig. 1 is the utility model capacitor switching combination switch control loop functional-block diagram.
Fig. 2 is the utility model capacitor switching combination switch major loop schematic circuit.
Embodiment
As shown in Figure 1-2, specific embodiment of the utility model is a kind of capacitor switching combination switch, comprise compensation condenser C, bidirectional triode thyristor K1, the control loop of the major loop of magnetic latching relay K2 composition and single chip machine controlling circuit composition, described single chip machine controlling circuit comprises control circuit of bidirectional thyristor, magnetic latching relay control circuit, compensation condenser control circuit, voltage detecting circuit, zero cross detection circuit, signal input circuit, described single chip machine controlling circuit is according to the supply voltage zero cross signal of zero cross detection circuit, voltage signal on the capacitor switching signal of signal input circuit and power supply and the compensation condenser of voltage detecting circuit, by carrying out analytical calculation with the various parameter definite values of setting, in the time obtaining the building-out capacitor input signal of signal input circuit, while conducting bidirectional triode thyristor and magnetic latching relay in the time of supply voltage zero passage, due to the hysteresis quality of magnetic latching relay action, bidirectional triode thyristor in advance after conducting 0.1-1 second magnetic latching relay then closed, compensation condenser is dropped into, when described single chip machine controlling circuit is compensated withdrawing from after signal or various fault-signal of capacitor, single chip machine controlling circuit sends after first control signal drops into bidirectional triode thyristor and magnetic latching relay is disconnected again, and when bidirectional triode thyristor is again at current over-zero after magnetic latching relay disconnects, disconnects compensation condenser is withdrawn from.
Further arrange, described by compensation condenser C, bidirectional triode thyristor K1, the major loop of magnetic latching relay K2 composition, bidirectional triode thyristor K1 wherein and magnetic latching relay K2 bis-end parallel connections, compensation condenser C is connected on power supply phase line L and bidirectional triode thyristor K1 after protection fuse L is set, between magnetic latching relay K2 and power supply N line, described major loop also comprises the resistance R 2 and the capacitor C1 that are connected in parallel on bidirectional triode thyristor K1 bis-ends, the input of diode D and photoelectrical coupler T, resistance R 2 and capacitor C1 form the resistance-capacitance protection of bidirectional triode thyristor K1 and provide power supply signal for photoelectrical coupler, diode D provides working pulse signal for photoelectrical coupler T, resistance R 1, R3, R4 is current-limiting resistance, input pulse control signal IN after R1 for bidirectional triode thyristor K1 provides triggering signal, the photoelectrical coupler T that accessory power supply VCC is zero cross detection circuit by R4 provides working power, the voltage zero-crossing signal that photoelectrical coupler T obtains exports single chip machine controlling circuit to from the collector electrode of photoelectrical coupler.
Further arrange, described bidirectional triode thyristor K1 and magnetic latching relay K2 can be one group or three groups, and to form single-phase or three phase capacitance switching combination switch, described magnetic latching relay K2 can be also contactor or electromagnetic relay.
Further arrange, described signal input circuit, zero cross detection circuit and voltage detecting circuit is all to adopt photoelectrical coupler input single chip machine controlling circuit, this is on the one hand to carry out forceful electric power isolation, is to be pulse digital signal because single chip machine controlling circuit needs on the other hand.
Further arrange, described bidirectional triode thyristor triggers control by pulse signal.
Further arrange; described compensation condenser C can be single-phase or three-phase; can be one or more; each compensation condenser carries out switching control by one group of corresponding capacitor switching combination switch; the failure condition that described single chip machine controlling circuit can go out electric power system according to the input-signal judging of the voltage signal of compensation condenser voltage detecting circuit and zero cross detection circuit is to carry out power phase shortage, power failure, incoming call, and the various defencive functions such as compensation condenser short circuit, open circuit also send corresponding alarm signal.
Claims (3)
1. a capacitor switching combination switch, comprise compensation condenser, bidirectional triode thyristor, the control loop of the major loop of magnetic latching relay composition and single chip machine controlling circuit composition, described single chip machine controlling circuit comprises control circuit of bidirectional thyristor, magnetic latching relay control circuit, compensation condenser control circuit, voltage detecting circuit, zero cross detection circuit, signal input circuit, described single chip machine controlling circuit is according to zero cross detection circuit, the relevant signal that signal input circuit and voltage detecting circuit obtain, by carrying out analytical calculation with the relevant parameters of setting, output control signal successively conducting bidirectional triode thyristor and magnetic latching relay and compensation condenser is dropped in the time of supply voltage zero passage, when described single chip machine controlling circuit is compensated withdrawing from after signal or various fault-signal of capacitor, after single chip machine controlling circuit sends control signal bidirectional triode thyristor is dropped into, magnetic latching relay disconnects, and after magnetic latching relay disconnects, bidirectional triode thyristor disconnects during again at current over-zero and compensation condenser is withdrawn from.
2. capacitor switching combination switch according to claim 1, is characterized in that: described bidirectional triode thyristor and magnetic latching relay can be all one group or three groups, to form single-phase or three phase capacitance switching combination switch.
3. capacitor switching combination switch according to claim 1 and 2, is characterized in that: described magnetic latching relay can be contactor or electromagnetic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505933.1U CN204030614U (en) | 2014-08-29 | 2014-08-29 | A kind of capacitor switching combination switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505933.1U CN204030614U (en) | 2014-08-29 | 2014-08-29 | A kind of capacitor switching combination switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030614U true CN204030614U (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505933.1U Expired - Fee Related CN204030614U (en) | 2014-08-29 | 2014-08-29 | A kind of capacitor switching combination switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249673A (en) * | 2016-07-22 | 2016-12-21 | 张其发 | Voltage real-time monitoring control circuit |
| CN110350370A (en) * | 2019-07-17 | 2019-10-18 | 南京伊科诺电气科技有限公司 | A kind of intelligent socket and its operating passing zero method |
-
2014
- 2014-08-29 CN CN201420505933.1U patent/CN204030614U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249673A (en) * | 2016-07-22 | 2016-12-21 | 张其发 | Voltage real-time monitoring control circuit |
| CN110350370A (en) * | 2019-07-17 | 2019-10-18 | 南京伊科诺电气科技有限公司 | A kind of intelligent socket and its operating passing zero method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20141217 Termination date: 20160829 |