CN201174597Y - 10kV reactive compensating capacitor switch - Google Patents
10kV reactive compensating capacitor switch Download PDFInfo
- Publication number
- CN201174597Y CN201174597Y CNU2008200662276U CN200820066227U CN201174597Y CN 201174597 Y CN201174597 Y CN 201174597Y CN U2008200662276 U CNU2008200662276 U CN U2008200662276U CN 200820066227 U CN200820066227 U CN 200820066227U CN 201174597 Y CN201174597 Y CN 201174597Y
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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 relates to a 10kV reactive power compensation capacitor switching switch, which consists of three relays (or circuit breakers) and a control circuit, wherein a main contact of each relay is respectively connected to three phases of a main circuit in series, an input and an output of the main contact of each relay are respectively connected with an electric network and a capacitor (a capacitor bank), a control coil of each relay is connected with an output control wire of the control circuit, and the main contacts of two of the relays are respectively connected with controlled silicon in parallel. The switch is characterized in that: the controlled silicon parallelly connected to the main contacts is formed by serially connecting at least two controlled silicon. The switch adopts a circuit structure that the contacts of the relays are connected with the controlled silicon in parallel, a switching strategy and the switching opportunity selection controlled by a software are matched, which ensure that inrush current can not be produced when the capacitor is switched and the switching can not stretch discharge, thereby prolonging the service life of the relays; the adaptation of at least two controlled silicon overcomes the defect of inadequate voltage withstanding, and the adaptation of an isolating circuit overcomes the defect that the interference is easy to produce between a high-voltage circuit and a control loop.
Description
Technical field
The utility model belongs to a kind of fling-cut switch of commercial power capacitance compensating cabinet, particularly a kind of 10kV reactive power compensation capacitor switching switch.
Background technology
At present the fling-cut switch of commercial power capacitance compensating cabinet often adopts relay (contactor) or the circuit breaker fling-cut switch as capacitor, because capacitor volume is very big, major loop has very big shoving when dropping into electric capacity, and relay is contact meeting arcing when switching, influenced the useful life of relay and building-out capacitor, if adopt the fling-cut switch of controllable silicon as electric capacity, because certain pressure drop is arranged during the controllable silicon conducting, heating is very serious when flowing through big electric current, must install bigger radiator additional, both increased the volume of switch, more high-power loss had been arranged again.Though disclosed 200520099258.8 Chinese patents have solved the problems referred to above, when being applied to the 10KV high-voltage fence, there is the defective that is subject to disturb between withstand voltage not enough, high tension loop of controllable silicon and the control loop.
Summary of the invention
The purpose of this utility model provide a kind of neither can produce shove, oneself power consumption is very little again, can be applied to the 10kV reactive power compensation capacitor switching switch of 10KV high-voltage fence again, to overcome above-mentioned deficiency.
To achieve these goals, the utility model is made of three relays (or circuit breaker) and control circuit, wherein the main contact of each relay is connected on respectively in the three-phase of major loop, the input and output of its main contact are connected with capacitor (capacitor group) with electrical network respectively, the control coil of relay is connected with the output control line of control circuit, respectively be parallel with controllable silicon on the main contact of two relays therein, the silicon controlled trigger end is connected with the output control line of control circuit, is characterized in: the controllable silicon that is connected in parallel on the main contact is made of at least two controllable silicon series connection.
Be connected with buffer circuit between the output control line of above-mentioned each silicon controlled trigger end and control circuit.
Above-mentioned control circuit produces circuit by central processor CPU, amplifying circuit and triggering signal and constitutes, wherein the data input pin of central processor CPU links to each other with the switching signal with the phase test signal, the relay control signal output of central processor CPU and the input of output of SCR control signal and amplifying circuit join, the output of amplifying circuit is connected with the input that triggering signal produces circuit with the control coil of relay respectively, and the output that triggering signal produces circuit is connected with the silicon controlled trigger end by buffer circuit.
Because the utility model adopts the circuit structure of relay contact and controllable silicon parallel connection, cooperation is by the Switching Strategy and the switching choose opportunities of software control, make when capacitor drops into, can not produce and shove, switching all can arcing, thereby prolonged the useful life of relay, adopt at least two controllable silicon series connection to solve withstand voltage not enough defective, adopt buffer circuit to solve the defective that is subject to disturb between high tension loop and the control loop.
Description of drawings
Fig. 1 is the syndeton schematic diagram of the utility model major loop.
Fig. 2 is the utility model control circuit theory diagram.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
The syndeton of major loop of the present utility model as shown in Figure 1, scurry the controllable silicon AS1～ASn of connection, the controllable silicon CS1～CSn that scurries connection and magnetic latching relay K1, K2, K3 among the figure and form main switch jointly, controllable silicon realizes that mainly building-out capacitor is not had the function of impacting ground input electrical network Ua, Ub, Uc or disconnecting from electrical network Ua, Ub, Uc, relay K 1, K3 reliably connect the back closure at bidirectional triode thyristor, with the controllable silicon short circuit, realize normal operation function.Relay K 2 realizes switching on or off the function of circuit, moves when no current.
The sequence of movement of the utility model input compensation capacitor C is: at first with relay K 2 closures, respectively controllable silicon AS1～ASn, CS1～CSn choosing is connected then, again with relay K 1, K3 closure; The sequence of movement of excision building-out capacitor C is: at first disconnect relay K 1, K3 under the situation that controllable silicon AS1～ASn, CS1～CSn connects, stop the triggering signal of controllable silicon AS1～ASn, CS1～CSn then, disconnect relay K 2 at last.In the process of input compensation capacitor C, after the K2 closure, circuit does not form the loop, no current, select the mode that is connected through controllable silicon AS1～ASn, CS1～CSn employing, promptly voltage is the conducting of 0V time trigger controllable silicon between the contactor fracture, and the overcurrent multiple can be controlled in 2 times of rated current.In the excision compensation condenser process, stop the triggering signal of controllable silicon AS1～ASn, CS1～CSn after, during current over-zero, controllable silicon turn-offs naturally, capacitor C is out of service, can not impact to electrical network.It all is to finish under the condition of controllable silicon AS1～ASn, CS1～CSn by-path turn-on that relay K 1, K3 switch on and off, so fracture can arcing; Relay K 2 is the switching electric current not, and fracture can arcing yet.This switching mode has effectively been protected relay contact, prolongs the useful life and the silicon controlled voltage endurance capability of relay and corresponding combination switch thereof greatly.。
The acp chip central processor CPU of control circuit of the present utility model (as shown in Figure 2) adopts the 89C2051 single-chip microcomputer.Singlechip CPU accept from idle compensating control throwing, cut signal, high level is for throwing, low level is for cutting.After CPU receives switching compensation condenser signal,, send corresponding signal (be high level and represent to connect, low level is represented to disconnect) for respectively relay K 2, controllable silicon AS1～ASn, CS1～CSn, relay K 1, K3 promptly according to the sequence of movement of design.For safety action reliable, there is certain hour at interval between per two actuating signals, guarantee like this before each action, before once the action transient process finish, wherein the input point of controllable silicon AS1～ASn, CS1～CSn triggering signal is respectively when relay K 1 and relay K 3 fracture voltage zero passages.The above-mentioned course of work all realizes with software in single-chip microcomputer 89C2051.Design according to program, receive the switching signal of slave controller when single-chip microcomputer after, program meeting final controlling element initialization and phase-detection work, and according to program setting, select suitable opportunity (phase place) that corresponding controllable silicon is sent action command by buffer circuit, or relay send action command.
The utility model can also realize that system cut-off detects with power supply to fall mutually to detect, and can in time allow switch reset during power failure, guarantees that system's upper electrical switch all is in off-state in any case, does not have shoving when powering on.
The content that is not described in detail in this specification belongs to this area professional and technical personnel's known prior art.
Claims (3)
1, a kind of 10kV reactive power compensation capacitor switching switch, constitute by three relays and control circuit, wherein the main contact of each relay is connected on respectively in the three-phase of major loop, the input and output of its main contact are connected with capacitor with electrical network respectively, the control coil of relay is connected with the output control line of control circuit, respectively be parallel with controllable silicon on the main contact of two relays therein, the silicon controlled trigger end is connected with the output control line of control circuit, it is characterized in that: the controllable silicon that is connected in parallel on the main contact is made of at least two controllable silicon series connection.
2,10kV reactive power compensation capacitor switching switch as claimed in claim 1 is characterized in that: be connected with buffer circuit between the output control line of each silicon controlled trigger end and control circuit.
3,10kV reactive power compensation capacitor switching switch as claimed in claim 1, it is characterized in that: control circuit is by central processor CPU, amplifying circuit and triggering signal produce circuit and constitute, wherein the data input pin of central processor CPU links to each other with the switching signal with the phase test signal, the relay control signal output of central processor CPU and the input of output of SCR control signal and amplifying circuit join, the output of amplifying circuit is connected with the input that triggering signal produces circuit with the control coil of relay respectively, and the output that triggering signal produces circuit is connected with the silicon controlled trigger end by buffer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200662276U CN201174597Y (en) | 2008-03-27 | 2008-03-27 | 10kV reactive compensating capacitor switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200662276U CN201174597Y (en) | 2008-03-27 | 2008-03-27 | 10kV reactive compensating capacitor switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174597Y true CN201174597Y (en) | 2008-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200662276U Expired - Fee Related CN201174597Y (en) | 2008-03-27 | 2008-03-27 | 10kV reactive compensating capacitor switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN201174597Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616939A (en) * | 2015-02-06 | 2015-05-13 | 孙毅彪 | Non-arc intelligent bridge strong-controlled type high-voltage circuit breaker |
| CN104616926A (en) * | 2015-02-06 | 2015-05-13 | 孙毅彪 | Non-arc, series and intelligent bridge type high-voltage circuit breaker |
| CN104637753A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free matrix intelligent bridge strong control type high-voltage circuit breaker |
| CN104637754A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free matrix intelligent bridge type high-voltage circuit breaker |
| CN104637723A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free intelligent bridge type high-voltage circuit breaker |
| CN104681349A (en) * | 2015-02-06 | 2015-06-03 | 孙毅彪 | No-arc parallel intelligent bridge type high-voltage circuit breaker |
| WO2019033717A1 (en) * | 2017-08-15 | 2019-02-21 | 广州金升阳科技有限公司 | Alternating current switching device |
| CN111427440A (en) * | 2020-03-08 | 2020-07-17 | 苏州浪潮智能科技有限公司 | Method and equipment for controlling GPU compensation capacitance |
| CN111856182A (en) * | 2020-07-15 | 2020-10-30 | 国网青海省电力公司电力科学研究院 | Capacitor tower |
-
2008
- 2008-03-27 CN CNU2008200662276U patent/CN201174597Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616939A (en) * | 2015-02-06 | 2015-05-13 | 孙毅彪 | Non-arc intelligent bridge strong-controlled type high-voltage circuit breaker |
| CN104616926A (en) * | 2015-02-06 | 2015-05-13 | 孙毅彪 | Non-arc, series and intelligent bridge type high-voltage circuit breaker |
| CN104637753A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free matrix intelligent bridge strong control type high-voltage circuit breaker |
| CN104637754A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free matrix intelligent bridge type high-voltage circuit breaker |
| CN104637723A (en) * | 2015-02-06 | 2015-05-20 | 孙毅彪 | Arc-free intelligent bridge type high-voltage circuit breaker |
| CN104681349A (en) * | 2015-02-06 | 2015-06-03 | 孙毅彪 | No-arc parallel intelligent bridge type high-voltage circuit breaker |
| CN104637753B (en) * | 2015-02-06 | 2018-04-20 | 孙毅彪 | No electric arc type matrix learning bridge controls by force formula high-voltage circuitbreaker |
| CN104681349B (en) * | 2015-02-06 | 2018-09-21 | 孙毅彪 | Without electric arc type intelligent bridge-type high-voltage circuitbreaker in parallel |
| CN104637723B (en) * | 2015-02-06 | 2018-12-28 | 孙毅彪 | Without electric arc type intelligence bridge-type high-voltage circuitbreaker |
| WO2019033717A1 (en) * | 2017-08-15 | 2019-02-21 | 广州金升阳科技有限公司 | Alternating current switching device |
| CN111427440A (en) * | 2020-03-08 | 2020-07-17 | 苏州浪潮智能科技有限公司 | Method and equipment for controlling GPU compensation capacitance |
| CN111856182A (en) * | 2020-07-15 | 2020-10-30 | 国网青海省电力公司电力科学研究院 | Capacitor tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 |