CN103618321A - Reactive compensating capacitor device - Google Patents
Reactive compensating capacitor device Download PDFInfo
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- CN103618321A CN103618321A CN201310645727.0A CN201310645727A CN103618321A CN 103618321 A CN103618321 A CN 103618321A CN 201310645727 A CN201310645727 A CN 201310645727A CN 103618321 A CN103618321 A CN 103618321A
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- thyristor
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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 invention provides a reactive compensating capacitor device. The reactive compensating capacitor device comprises a controllable capacitor set and a fixed capacitor set, and the controllable capacitor set and the fixed capacitor set are connected in series. The controllable capacitor set comprises a second resistor, a second capacitor and a switch, the switch is controlled to be turned on or turn off to control whether the second capacitor is charged or not to achieve the aim of controlling the reactive power output, and the function of dynamically adjusting the capacity of the capacitor device in a classification mode is achieved.
Description
Technical field
The application relates to power system device field, particularly relates to a kind of reactive-load compensation capacitor device.
Background technology
In electric power system, thyristor switchable capacitor type reactive power compensator is mainly used in load or burden without work is compensated, and it mainly adopts switching mode in parallel.
The capacitor device of the described switching mode in parallel of employing in the market generally adopts packet type switching pattern to control compensation power, described packet type switched capacitor can be divided into again vacuum contactor formula grouping switching capacitor and thyristor type grouping switching capacitor, the quantity of vacuum contactor is depended in the capacitance grouping of described vacuum type contactor type grouping switching capacitor, described vacuum contactor quantity is more, and grouping is thinner; Described thyristor type grouping switching capacitor can, according to the difference of electric pressure and capacity, adopt the connection in series-parallel thyristor of varying number.
But, no matter be in described vacuum contactor formula grouping switching capacitor or described thyristor type grouping switching capacitor, the voltage that described vacuum contactor and described thyristor bear is the rated voltage of capacitor device, described vacuum contactor and thyristor are for a long time under high-voltage state, and obviously shorten useful life.
Summary of the invention
In view of above technical problem, the embodiment of the present application provides a kind of reactive-load compensation capacitor device, comprising:
Controllable capacitor group and fixed capacitor group;
The first end of described fixed capacitor group is connected with bus, and the second end is connected with the first end of described controllable capacitor group;
The second end of described controllable capacitor group adopts three-phase star connection;
Wherein:
Described fixed capacitor group, comprising:
The first reactance and first electric capacity of mutually connecting, one end not being connected with described the first electric capacity of described the first reactance is as the first end of described fixed capacitor group, and one end that described the first electric capacity is not connected with described the first reactance is as the second end of described fixed capacitor group;
Described controllable capacitor group, comprising:
The second reactance, the first end of described the second reactance is as the first end of described controllable capacitor group;
The second electric capacity, the first end of described the second electric capacity is connected with described second reactance the second end, and the second end of described the second electric capacity adopts three-phase star connection as the second end of described controllable capacitor group;
Switch, the first end of described switch is connected with the first end of described reactance, and the second end of described switch is connected with the second end of described the second electric capacity.
Preferably, in above-mentioned reactive-load compensation capacitor device, the number of described controllable capacitor group is N+1, and described N+1 controllable capacitor group connected successively, and described N is not less than 1 positive integer.
Preferably, in above-mentioned reactive-load compensation capacitor device, the load voltage value of described N+1 controllable capacitor group is identical.
Preferably, in above-mentioned reactive-load compensation capacitor device, the load voltage value of described N+1 controllable capacitor group is different.
Preferably, in above-mentioned reactive-load compensation capacitor device, the reactance Rate of the second reactance in described N+1 controllable capacitor group is identical.
Preferably, in above-mentioned reactive-load compensation capacitor device, described switch is comprised of the first thyristor and second thyristor of reverse parallel connection.
Preferably, in above-mentioned reactive-load compensation capacitor device, the control end of described the first thyristor and the second thyristor is connected to on-off controller, and described on-off controller is for controlling the break-make of described the first thyristor and the second thyristor.
Preferably, in above-mentioned reactive-load compensation capacitor device, the anode of described the first thyristor is connected with the first end of described the second reactance, and the negative electrode of the first thyristor is connected with the second end of described the second electric capacity.
Preferably, in above-mentioned reactive-load compensation capacitor device, when needs are controlled described the second capacitance and are not exported, at electrical network positive half wave constantly, described on-off controller is controlled described the first thyristor conducting, described the second thyristor cut-off, when the negative half-wave of described electrical network, described on-off controller is controlled described the first thyristor cut-off, described the second thyristor conducting.
Preferably, in above-mentioned reactive-load compensation capacitor device, the number of described the first electric capacity is N+1, series connection mutually between described N+1 the first electric capacity.
Known by technique scheme, the described reactive-load compensation capacitor device that the application provides, adopt series system that fixed capacitor group is connected with controllable capacitor group, by controlling the break-make control of described switch, whether described the second electric capacity is charged, to reach the object of power ratio control output, can realize the multistage quick adjustment that realizes capacitor output reactive power in a group capacitor device; Visible, than technical scheme of the prior art, the voltage that described in the application, switch bears is the voltage at described controllable capacitor group two ends, this magnitude of voltage is much smaller than the load voltage value of described reactive-load compensation capacitor device group, thyristor quantity used is also less than the capacitor device thyristor quantity of whole group of switching, so the technical scheme that adopts the application to provide, rises appreciably the useful life of described switch.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structure chart of the described reactive-load compensation capacitor device that Fig. 1 provides for the embodiment of the present application;
The connection layout of described N+1 the controllable capacitor group that Fig. 2 provides for embodiment;
The structure chart of the reactive-load compensation capacitor device that Fig. 3 provides for another embodiment of the application;
The structure chart of the reactive-load compensation capacitor device that Fig. 4 provides for another embodiment of the application.
Embodiment
It is more than the application's core concept, in order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
The invention provides a kind of reactive-load compensation capacitor device, solved vacuum contactor described in prior art and described thyristor short problem in useful life.
A kind of reactive-load compensation capacitor the device below embodiment of the present invention being provided is introduced.
Embodiment mono-
Referring to Fig. 1, the structure chart of the described reactive-load compensation capacitor device that Fig. 1 provides for the embodiment of the present application.
The embodiment of the present application provides a kind of reactive-load compensation capacitor device, comprising: fixed capacitor group 1
With controllable capacitor group 2;
The first end of described fixed capacitor group 1 is connected with bus, and the second end is connected with the first end of described controllable capacitor group 2;
The second end three-phase star of described controllable capacitor group 2 connects;
Wherein:
Described fixed capacitor group 1, comprising:
The first reactance L1 and first capacitor C 1 of mutually connecting, one end that described the first reactance L1 is not connected with described the first capacitor C 1 is as the first end of described fixed capacitor group 1, wherein said the first reactance L1 is for the inrush phenomenon of suppression capacitor, and one end that described the first capacitor C 1 is not connected with described the first reactance L1 is as the second end of described fixed capacitor group 1;
Described controllable capacitor group 2, comprising:
The second reactance L2, the first end of described the second reactance L2 is as the first end of described controllable capacitor group 2;
The second electric capacity, the first end of the second electric capacity is connected with described second reactance the second end, and the second end of the second electric capacity adopts three-phase star connection as the second end of controllable capacitor group;
Switch, the first end of switch is connected with the first end of reactance, and the second end of switch is connected with the second end of the second electric capacity.
The described reactive-load compensation capacitor device that above-described embodiment provides is when application, described by controlling conducting and the shutoff of described K switch, whether control the capacity of described the second capacitor C2 in described controllable capacitor group 2 exports, in the time need to making the volume output of described capacitor 2, controlling described K switch disconnects, described the second reactance L2 and described the second capacitor C 2 access loops, the volume output of described the second capacitor C 2, now the voltage swing at K switch two ends is: the total voltage of described reactive-load compensation capacitor device deducts the voltage of described fixed capacitor.When not needing the capacity of described the second capacitor C2 to export, described K switch conducting, makes described the second reactance L2 and the second capacitor C 2 short circuits, and the capacity of described the second capacitor C 2 is not exported.
Known by technique scheme, the described reactive-load compensation capacitor device that the application provides, adopt series system that fixed capacitor group is connected with controllable capacitor group, by controlling the break-make control of described switch, whether described the second electric capacity is charged, to reach the object of power ratio control output, can realize the multistage quick adjustment that realizes capacitor output reactive power in a group capacitor device; Visible, than technical scheme of the prior art, the voltage that described in the application, switch bears is the voltage at described controllable capacitor group two ends, this magnitude of voltage is much smaller than the load voltage value of described reactive-load compensation capacitor device group, thyristor quantity used is also less than the capacitor device thyristor quantity of whole group of switching, so the technical scheme that adopts the application to provide, rises appreciably the useful life of described switch.
Referring to Fig. 2, the connection layout of described N+1 the controllable capacitor group that Fig. 2 provides for embodiment.
Be understandable that, in order to increase the adjustable range of the compensation power of described reactive-load compensation capacitor device, the number of the described controllable capacitor group that the present embodiment provides can be N+1, and described N+1 controllable capacitor group connected successively, and wherein said N is not less than 1 positive integer.
By controlling the K switch in controllable capacitor group described in each, whether the second capacitance of controlling in described controllable capacitor group is exported, the output capacity of wherein said reactive-load compensation capacitor device equal described reactive-load compensation capacitor device both end voltage square divided by capacitive reactance, so in described N+1 capacitor group, the quantity of described the second electric capacity of carrying out volume output is more, and the reactive power output of described reactive-load compensation capacitor device is lower.
Be understandable that, in order to regulate according to the actual requirements the output reactive power of described reactive-load compensation capacitor device, the load voltage value of described N+1 controllable capacitor group in the embodiment of the present application can be the same or different.
Embodiment bis-
Referring to Fig. 3, the structure chart of the reactive-load compensation capacitor device that Fig. 3 provides for another embodiment of the application.
With respect to embodiment mono-, the switch in the present embodiment is comprised of the first thyristor T1 and the second thyristor T2 of reverse parallel connection.
Wherein, the control end of described the first thyristor T1 and the second thyristor T2 is connected to on-off controller, described on-off controller is for controlling the break-make of described the first thyristor T1 and the second thyristor T2, the anode of described the first thyristor T1 is connected with the first end of described the second reactance L2, and the negative electrode of the first thyristor T1 is connected with the second end of described the second capacitor C 2; The anode of described the second thyristor T2 is connected with the negative electrode of the first thyristor T1, and the negative electrode of described the second thyristor T2 is connected with the anode of described the first thyristor T1.
Be understandable that, when adopting described the first thyristor T1 and the second thyristor T2, when the electric capacity output of described the second electric capacity is controlled, described controller is controlled the break-make of controlling described the first thyristor T1 and the second thyristor T2 according to the sine voltage in electrical network, concrete, when needs are controlled described the second capacitance and are not exported, at line voltage in positive half wave constantly, described on-off controller is controlled described the first thyristor T1 conducting, described the second thyristor T2 cut-off, when the negative half-wave of described electrical network, described on-off controller is controlled described the first thyristor T1 cut-off, described the second thyristor T2 conducting.When not needing described the second capacitance output, control described the first thyristor T1 and described the second thyristor T2 in cut-off state.
Be understandable that, the application described in each controllable capacitor group share an on-off controller, described on-off controller can be controlled the on off operating mode of thyristor described in each respectively.
Referring to Fig. 4, the structure chart of the described reactive-load compensation capacitor device that Fig. 4 provides for another embodiment of the application.
For convenient, understand, the present embodiment also provides a kind of structure chart of reactive-load compensation capacitor device, and referring to Fig. 4, the course of work and the principle of the reactive-load compensation capacitor device that the application is provided are introduced.
Referring to Fig. 4, described reactive-load compensation capacitor device comprises fixed capacitor group 1, controllable capacitor group 2 and controllable capacitor group 3 with mutual series connection, the structure of wherein said controllable capacitor group and fixed capacitor group, existing introduction in detail in other parts of the application, so carry out simple introduction at this: the switch of described controllable capacitor group 2,3 adopts the thyristor of reverse parallel connection to form, and wherein controllable capacitor 2 is identical with the load voltage value of controllable capacitor 3, and described the first capacitor C 1 is identical with the capacitance of described the second capacitor C 2.
Referring to the reactive-load compensation capacitor apparatus structure in Fig. 4, the first thyristor T1 in described controllable capacitor group 2 and controllable capacitor group 3 and the second thyristor T2 are during all according to certain sequential turn-on, the second capacitor C 2 short circuits in described controllable capacitor group 2 and controllable capacitor group 3, suppose that now described reactive-load compensation capacitor device output capacity is Q; Wherein conducting is now sequentially: at line voltage during in positive half wave, control the first thyristor T1 conducting in described controllable capacitor group 2 and controllable capacitor group 3, two other second thyristor T2 cut-off, when line voltage is when bearing half-wave, control the second thyristor T2 conducting in described controllable capacitor group 2 and controllable capacitor group 3, two other first thyristor T1 cut-off.
The first thyristor T1 in described controllable capacitor group 2 and the second thyristor T2 cut-off, thyristor T1 in controllable capacitor group 3 and thyristor T2 are during all according to certain sequential turn-on, the second capacitor C 2 short circuits in described controllable capacitor group 3, described the second capacitor C 2 volume outputs in controllable capacitor group 2, now described reactive-load compensation capacitor device output capacity is 0.75Q; Conducting is now sequentially: at line voltage during in positive half wave, control the first thyristor T1 conducting in described controllable capacitor group 3, the second thyristor T2 cut-off, when line voltage is when bearing half-wave, control the second thyristor T2 conducting in described controllable capacitor group 3, the first thyristor T1 cut-off.
When the first thyristor T1 in described controllable capacitor group 2 and controllable capacitor group 3 and the second thyristor T2 all end, described the second capacitor C 2 capacity in described controllable capacitor group 2 and controllable capacitor group 3 are all exported, and now the output capacity of described reactive-load compensation capacitor device is 0.6Q.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the application.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can be in the situation that do not depart from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a reactive-load compensation capacitor device, is characterized in that, comprising: controllable capacitor group and fixing
Capacitor group;
The first end of described fixed capacitor group is connected with bus, and the second end is connected with the first end of described controllable capacitor group;
The second end of described controllable capacitor group adopts three-phase star connection;
Wherein:
Described fixed capacitor group, comprising:
The first reactance and first electric capacity of mutually connecting, one end not being connected with described the first electric capacity of described the first reactance is as the first end of described fixed capacitor group, and one end that described the first electric capacity is not connected with described the first reactance is as the second end of described fixed capacitor group;
Described controllable capacitor group comprises:
The second reactance, the first end of described the second reactance is as the first end of described controllable capacitor group;
The second electric capacity, the first end of described the second electric capacity is connected with described second reactance the second end, and the second end of described the second electric capacity adopts three-phase star connection as the second end of described controllable capacitor group;
Switch, the first end of described switch is connected with the first end of described reactance, and the second end of described switch is connected with the second end of described the second electric capacity.
2. reactive-load compensation capacitor device according to claim 1, is characterized in that, the number of described controllable capacitor group is N+1, and described N+1 controllable capacitor group connected successively, and described N is not less than 1 positive integer.
3. reactive-load compensation capacitor device according to claim 2, is characterized in that, the load voltage value of described N+1 controllable capacitor group is identical.
4. reactive-load compensation capacitor device according to claim 2, is characterized in that, the load voltage value of described N+1 controllable capacitor group is different.
5. reactive-load compensation capacitor device according to claim 2, is characterized in that, the reactance Rate of the second reactance in described N+1 controllable capacitor group is identical.
6. reactive-load compensation capacitor device according to claim 1, is characterized in that described switch is comprised of the first thyristor and second thyristor of reverse parallel connection.
7. reactive-load compensation capacitor device according to claim 6, is characterized in that, the control end of described the first thyristor and the second thyristor is connected to on-off controller, and described on-off controller is for controlling the break-make of described the first thyristor and the second thyristor.
8. reactive-load compensation capacitor device according to claim 7, is characterized in that, the anode of described the first thyristor is connected with the first end of described the second reactance, and the negative electrode of the first thyristor is connected with the second end of described the second electric capacity.
9. reactive-load compensation capacitor device according to claim 8, it is characterized in that, when needs are controlled described the second capacitance and are not exported, at line voltage in positive half wave constantly, described on-off controller is controlled described the first thyristor conducting, described the second thyristor cut-off, when the negative half-wave of described electrical network, described on-off controller is controlled described the first thyristor cut-off, described the second thyristor conducting.
10. reactive-load compensation capacitor device according to claim 1, is characterized in that, the number of described the first electric capacity is N+1, series connection mutually between described N+1 the first electric capacity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645727.0A CN103618321A (en) | 2013-12-03 | 2013-12-03 | Reactive compensating capacitor device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310645727.0A CN103618321A (en) | 2013-12-03 | 2013-12-03 | Reactive compensating capacitor device |
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| CN103618321A true CN103618321A (en) | 2014-03-05 |
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| CN201310645727.0A Pending CN103618321A (en) | 2013-12-03 | 2013-12-03 | Reactive compensating capacitor device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688343A (en) * | 2021-03-22 | 2021-04-20 | 普世通（北京）电气有限公司 | High-voltage filtering transient reactive power compensation device |
| CN113346510A (en) * | 2021-02-04 | 2021-09-03 | 许继集团有限公司 | Controllable reactive power compensation device topology based on IGCT and control method thereof |
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| CN202856362U (en) * | 2012-05-09 | 2013-04-03 | 黄河科技学院 | Switching of capacitor groups in series controlled by thyristor of reactive power compensator |
| CN202906481U (en) * | 2012-11-30 | 2013-04-24 | 李国勇 | High-voltage TSC reactive dynamic compensation apparatus |
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| US6331765B1 (en) * | 1999-02-25 | 2001-12-18 | Kabushiki Kaisha Toshiba | Series compensator |
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| CN202856362U (en) * | 2012-05-09 | 2013-04-03 | 黄河科技学院 | Switching of capacitor groups in series controlled by thyristor of reactive power compensator |
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| CN113346510A (en) * | 2021-02-04 | 2021-09-03 | 许继集团有限公司 | Controllable reactive power compensation device topology based on IGCT and control method thereof |
| CN112688343A (en) * | 2021-03-22 | 2021-04-20 | 普世通（北京）电气有限公司 | High-voltage filtering transient reactive power compensation device |
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Application publication date: 20140305 |