CN204668956U - A kind of electric reactive compensating switching device - Google Patents
A kind of electric reactive compensating switching device Download PDFInfo
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- CN204668956U CN204668956U CN201520187437.0U CN201520187437U CN204668956U CN 204668956 U CN204668956 U CN 204668956U CN 201520187437 U CN201520187437 U CN 201520187437U CN 204668956 U CN204668956 U CN 204668956U
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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
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- 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
A kind of electric reactive compensating switching device belongs to low-voltage compensation apparatus technical field, particularly relates to a kind of electric reactive compensating switching device.The utility model provides a kind of stable, electric reactive compensating switching device of possessing state-indicating function.The utility model comprises the first three-phase breaker, the second three-phase breaker, the first capacitor fling-cut switch, the second capacitor fling-cut switch, the first three-phase capacitor and the second three-phase capacitor, the A phase input of its structural feature first three-phase breaker is connected with the A phase input of the second three-phase breaker, A phase power line respectively, the B phase input of the first three-phase breaker is connected with the B phase input of the second three-phase breaker, B phase power line respectively, and the C phase input of the first three-phase breaker is connected with the C phase input of the second three-phase breaker, C phase power line respectively.
Description
Technical field
The utility model belongs to low-voltage compensation apparatus technical field, particularly relates to a kind of electric reactive compensating switching device.
Background technology
Reactive power compensation works the power factor improving electrical network in power supply system, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.Reactive power compensation device is in an indispensable very important position in power supply system.
At present, the operation stability of the reactive power compensator on market is good not, and does not possess state-indicating function; Therefore the structure of existing reactive power compensator haves much room for improvement, and function has to be increased.
Summary of the invention
The utility model is exactly for the problems referred to above, provides a kind of stable, electric reactive compensating switching device of possessing state-indicating function.
For achieving the above object, the utility model adopts following technical scheme, the utility model comprises the first three-phase breaker, second three-phase breaker, first capacitor fling-cut switch, second capacitor fling-cut switch, first three-phase capacitor and the second three-phase capacitor, the A phase input of its structural feature first three-phase breaker respectively with the A phase input of the second three-phase breaker, A phase power line is connected, the B phase input of the first three-phase breaker respectively with the B phase input of the second three-phase breaker, B phase power line is connected, the C phase input of the first three-phase breaker respectively with the C phase input of the second three-phase breaker, C phase power line is connected.
The A phase output terminal of the first three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the first capacitor fling-cut switch, C phase input is corresponding connects; The A phase output terminal of the second three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the second capacitor fling-cut switch, C phase input is corresponding connects; The control signal input of the switching control section of the first capacitor fling-cut switch is connected with the first switch controlling signal input port, and the control signal input of the switching control section of the second capacitor fling-cut switch is connected with second switch control signal input port.
The A phase output terminal of the first capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the first three-phase capacitor, B phase port, C phase port respectively; The A phase output terminal of the second capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the second three-phase capacitor, B phase port, C phase port respectively; Be connected with the first indicator light between the B phase port of the first three-phase capacitor and C phase port, between the B phase port of the second three-phase capacitor and C phase port, be connected with the second indicator light.
As a kind of preferred version, first switch controlling signal input port described in the utility model is connected with the first switch controlling signal output port of switching controller, and second switch control signal input port is connected with the second switch control signal output port of switching controller; The A phase voltage signal input port of switching controller is connected with A phase power line, and the C phase voltage signal input port of switching controller is connected with C phase power line; The A phase current signal input port of switching controller is connected with the secondary of the A phase current mutual inductor detecting described A phase power line current.
As another kind of preferred version, the A phase output terminal of the first capacitor fling-cut switch described in the utility model is connected with first one end, current transformer former limit, and the first current transformer former limit other end is connected with the A phase port of the first three-phase capacitor; The A phase output terminal of the second capacitor fling-cut switch is connected with second one end, current transformer former limit, and the second current transformer former limit other end is connected with the A phase port of the second three-phase capacitor; First current transformer secondary is connected with the first current signal input port of described switching controller, and the second current transformer secondary is connected with the second current signal input port of described switching controller.
As another kind of preferred version, be provided with the first temperature sensor in the first three-phase capacitor described in the utility model, in the second three-phase capacitor, be provided with the second temperature sensor; The signal output port of the first temperature sensor is connected with the first temperature signal input mouth of described switching controller, and the signal output port of the second temperature sensor is connected with the second temperature signal input mouth of described switching controller.
Secondly, first capacitor fling-cut switch described in the utility model and the second capacitor fling-cut switch include three relays, wherein the main contact of each relay is connected in the three-phase of major loop respectively, the input and output of its main contact are connected with three-phase capacitor with power line respectively, the control coil of relay is connected with switch controlling signal input port, the main contact of two relays wherein is respectively parallel with controllable silicon, silicon controlled trigger end and described switching controller output control line be connected; The controllable silicon be connected in parallel on main contact is made up of at least two controllable silicon in serial connections.
In addition, buffer circuit is connected with between each described silicon controlled trigger end of the utility model and the output control line of switching controller.
The utility model beneficial effect.
The utility model adopts the redundancy structure of the first three-phase breaker, the second three-phase breaker, the first capacitor fling-cut switch, the second capacitor fling-cut switch, the first three-phase capacitor and the second three-phase capacitor, makes reactive power compensation uninterruptedly stable.
The control signal input of the switching control section of the utility model first capacitor fling-cut switch is connected with the first switch controlling signal input port, and the control signal input of the switching control section of the second capacitor fling-cut switch is connected with second switch control signal input port.Be convenient to be connected with switching controller carry out switching control by the first switch controlling signal input port and second switch control signal input port.
Be connected with the first indicator light between the B phase port of the utility model first three-phase capacitor and C phase port, between the B phase port of the second three-phase capacitor and C phase port, be connected with the second indicator light.By the first indicator light and the second indicator light, be convenient to switching situation and the ruuning situation of understanding three-phase capacitor in time.
The utility model structure is relatively simple, small volume, cost are lower.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described further.The utility model protection range is not only confined to the statement of following content.
Fig. 1 is winding diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model capacitor fling-cut switch.
Embodiment
As shown in the figure, the utility model comprises the first three-phase breaker, second three-phase breaker, first capacitor fling-cut switch, second capacitor fling-cut switch, first three-phase capacitor and the second three-phase capacitor, the A phase input of its structural feature first three-phase breaker respectively with the A phase input of the second three-phase breaker, A phase power line is connected, the B phase input of the first three-phase breaker respectively with the B phase input of the second three-phase breaker, B phase power line is connected, the C phase input of the first three-phase breaker respectively with the C phase input of the second three-phase breaker, C phase power line is connected.
The A phase output terminal of the first three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the first capacitor fling-cut switch, C phase input is corresponding connects; The A phase output terminal of the second three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the second capacitor fling-cut switch, C phase input is corresponding connects; The control signal input of the switching control section of the first capacitor fling-cut switch is connected with the first switch controlling signal input port, and the control signal input of the switching control section of the second capacitor fling-cut switch is connected with second switch control signal input port.
The A phase output terminal of the first capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the first three-phase capacitor, B phase port, C phase port respectively; The A phase output terminal of the second capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the second three-phase capacitor, B phase port, C phase port respectively; Be connected with the first indicator light between the B phase port of the first three-phase capacitor and C phase port, between the B phase port of the second three-phase capacitor and C phase port, be connected with the second indicator light.
Described first switch controlling signal input port is connected with the first switch controlling signal output port of switching controller, and second switch control signal input port is connected with the second switch control signal output port of switching controller; The A phase voltage signal input port of switching controller is connected with A phase power line, and the C phase voltage signal input port of switching controller is connected with C phase power line; The A phase current signal input port of switching controller is connected with the secondary of the A phase current mutual inductor detecting described A phase power line current.
The A phase output terminal of described first capacitor fling-cut switch is connected with first one end, current transformer former limit, and the first current transformer former limit other end is connected with the A phase port of the first three-phase capacitor; The A phase output terminal of the second capacitor fling-cut switch is connected with second one end, current transformer former limit, and the second current transformer former limit other end is connected with the A phase port of the second three-phase capacitor; First current transformer secondary is connected with the first current signal input port of described switching controller, and the second current transformer secondary is connected with the second current signal input port of described switching controller.Current transformer detects the A phase current of three-phase capacitor, cut-offfing of switching controller control capacitance fling-cut switch; The overcurrent protection of three-phase capacitor can be realized, substitute the fuse and thermal relay that use in existing product, not only there is better protective value, and the very high-power loss not having fuse and thermal relay in existing product to cause.
Be provided with the first temperature sensor in described first three-phase capacitor, in the second three-phase capacitor, be provided with the second temperature sensor; The signal output port of the first temperature sensor is connected with the first temperature signal input mouth of described switching controller, and the signal output port of the second temperature sensor is connected with the second temperature signal input mouth of described switching controller.Temperature sensor records the internal operating temperature of three-phase capacitor, cut-offfing of switching controller control capacitance fling-cut switch; Realize the temperature protection to three-phase capacitor.
Described first capacitor fling-cut switch and the second capacitor fling-cut switch include three relays, wherein the main contact of each relay is connected in the three-phase of major loop respectively, the input and output of its main contact are connected with three-phase capacitor with power line respectively, the control coil of relay is connected with switch controlling signal input port, the main contact of two relays wherein is respectively parallel with controllable silicon, silicon controlled trigger end and described switching controller output control line be connected; The controllable silicon be connected in parallel on main contact is made up of at least two controllable silicon in serial connections.Owing to adopting the circuit structure of relay contact and controllable silicon parallel connection, make can not produce when capacitor drops into shove, switching all can not draw orphan, thus extends the useful life of relay.At least two controllable silicon in serial connections are adopted to solve withstand voltage inadequate defect, controllable silicon mainly realizes building-out capacitor without the function dropping into electrical network with impacting or disconnect from electrical network, relay is closed after bidirectional triode thyristor is reliably connected, and by controllable silicon short circuit, realizes normal operation function.
Buffer circuit is connected with between each described silicon controlled trigger end and the output control line of switching controller.Buffer circuit is adopted to solve the defect be easily disturbed between high tension loop and control loop.
Described switching controller can adopt STC12C2052 single-chip microcomputer.
Described switching controller also can adopt JKW5C type switching controller.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection range of the present utility model as long as meet.
Claims (6)
1.
a kind of electric reactive compensating switching device, comprise the first three-phase breaker, second three-phase breaker, first capacitor fling-cut switch, second capacitor fling-cut switch, first three-phase capacitor and the second three-phase capacitor, the A phase input that it is characterized in that the first three-phase breaker respectively with the A phase input of the second three-phase breaker, A phase power line is connected, the B phase input of the first three-phase breaker respectively with the B phase input of the second three-phase breaker, B phase power line is connected, the C phase input of the first three-phase breaker respectively with the C phase input of the second three-phase breaker, C phase power line is connected,
the A phase output terminal of the first three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the first capacitor fling-cut switch, C phase input is corresponding connects; The A phase output terminal of the second three-phase breaker, B phase output terminal, C phase output terminal respectively with A phase input, the B phase input of the second capacitor fling-cut switch, C phase input is corresponding connects; The control signal input of the switching control section of the first capacitor fling-cut switch is connected with the first switch controlling signal input port, and the control signal input of the switching control section of the second capacitor fling-cut switch is connected with second switch control signal input port;
the A phase output terminal of the first capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the first three-phase capacitor, B phase port, C phase port respectively; The A phase output terminal of the second capacitor fling-cut switch, B phase output terminal, C phase output terminal are connected with the A phase port of the second three-phase capacitor, B phase port, C phase port respectively; Be connected with the first indicator light between the B phase port of the first three-phase capacitor and C phase port, between the B phase port of the second three-phase capacitor and C phase port, be connected with the second indicator light.
2.
a kind of electric reactive compensating switching device according to claim 1, it is characterized in that described first switch controlling signal input port is connected with the first switch controlling signal output port of switching controller, second switch control signal input port is connected with the second switch control signal output port of switching controller; The A phase voltage signal input port of switching controller is connected with A phase power line, and the C phase voltage signal input port of switching controller is connected with C phase power line; The A phase current signal input port of switching controller is connected with the secondary of the A phase current mutual inductor detecting described A phase power line current.
3.
a kind of electric reactive compensating switching device according to claim 2, it is characterized in that the A phase output terminal of described first capacitor fling-cut switch is connected with first one end, current transformer former limit, the first current transformer former limit other end is connected with the A phase port of the first three-phase capacitor; The A phase output terminal of the second capacitor fling-cut switch is connected with second one end, current transformer former limit, and the second current transformer former limit other end is connected with the A phase port of the second three-phase capacitor; First current transformer secondary is connected with the first current signal input port of described switching controller, and the second current transformer secondary is connected with the second current signal input port of described switching controller.
4.
according to claim 3, an electric reactive compensating switching device, is characterized in that being provided with the first temperature sensor in described first three-phase capacitor, be provided with the second temperature sensor in the second three-phase capacitor; The signal output port of the first temperature sensor is connected with the first temperature signal input mouth of described switching controller, and the signal output port of the second temperature sensor is connected with the second temperature signal input mouth of described switching controller.
5.
a kind of electric reactive compensating switching device according to claim 4, it is characterized in that described first capacitor fling-cut switch and the second capacitor fling-cut switch include three relays, wherein the main contact of each relay is connected in the three-phase of major loop respectively, the input and output of its main contact are connected with three-phase capacitor with power line respectively, the control coil of relay is connected with switch controlling signal input port, the main contact of two relays wherein is respectively parallel with controllable silicon, silicon controlled trigger end and described switching controller output control line be connected; The controllable silicon be connected in parallel on main contact is made up of at least two controllable silicon in serial connections.
6.
according to claim 5, an electric reactive compensating switching device, is characterized in that being connected with buffer circuit between each described silicon controlled trigger end and the output control line of switching controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520187437.0U CN204668956U (en) | 2015-03-31 | 2015-03-31 | A kind of electric reactive compensating switching device |
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| CN201520187437.0U CN204668956U (en) | 2015-03-31 | 2015-03-31 | A kind of electric reactive compensating switching device |
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| CN204668956U true CN204668956U (en) | 2015-09-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826931A (en) * | 2016-05-28 | 2016-08-03 | 胡运冲 | High-voltage reactive power compensation device with self-protection function and power compensation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826931A (en) * | 2016-05-28 | 2016-08-03 | 胡运冲 | High-voltage reactive power compensation device with self-protection function and power compensation method |
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| Date | Code | Title | Description |
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| 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: 20150923 Termination date: 20190331 |