CN203911485U - Bypass device of power unit of static var generator - Google Patents
Bypass device of power unit of static var generator Download PDFInfo
- Publication number
- CN203911485U CN203911485U CN201320854242.8U CN201320854242U CN203911485U CN 203911485 U CN203911485 U CN 203911485U CN 201320854242 U CN201320854242 U CN 201320854242U CN 203911485 U CN203911485 U CN 203911485U
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- unit
- shunting device
- circuit
- power
- power supply
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- 230000003068 static effect Effects 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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- Direct Current Feeding And Distribution (AREA)
Abstract
The application discloses a bypass device of a power unit of a static var generator. The bypass device comprises a bypass unit and a power supply unit. The power supply unit is used for supplying power for the bypass unit. The electric energy is obtained from an adjacent power unit, and the whole bypass device does not obtain electric energy from one AC source. In this way, the problem of ineffective action due to that the bypass device loses control as the AC source fails in a centralized power supply mode can be avoided, and that the static var generator will not be out of control is ensured. In addition, the bypass device disclosed by the embodiment obtains the electric energy from the adjacent power unit, the wiring is relatively simple and short, and the cost can be saved to some extent.
Description
Technical field
The application relates to electric and electronic technical field, more particularly, relates to a kind of shunting device of power cell of static reacance generator.
Background technology
At present in high-pressure reactive compensation field, static reacance generator (Static Var Generator, SVG) development is swift and violent, technically also reaches its maturity, and applies more and more extensive.The structure of SVG be take many level of units in series chain structure as main, and electric pressure mainly contains 6kV, 10kV and 35kV.Chain type SVG is comprised of a plurality of power cells, and the quantity of power cell is determined by electric pressure.
Due to power cell structure complexity and quantity more, so the fault of SVG is mainly caused by the fault of power cell.For reducing failure rate, current SVG generally comprises bypath system, and when power cell breaks down, bypath system can be fallen the power unit by-pass breaking down, and makes SVG can continue operation.
Bypath system is by the mode of centrally connected power supply, the shunting device of each power cell to be powered at present, by introducing a road alternating current source, with the isolating transformer step-down of inside, parallel way access power unit, then through converting the control electricity of the shunting device that generates this power cell.Once alternating current source lost efficacy, the shunting device of all power cells will electricity out of hand, just can not effectively move, and then whole SVG will enter runaway condition when breaking down.
Utility model content
In view of this, the application provides a kind of shunting device of power cell of static reacance generator, can effectively move, so that static reacance generator can not enter runaway condition.
To achieve these goals, the existing scheme proposing is as follows:
A shunting device for the power cell of static reacance generator, comprising:
By-pass unit, for falling described power unit by-pass according to fault-signal;
Power supply unit, for controlling electricity to described by-pass unit output;
The electric energy input of described power supply unit is connected with the adjacent power unit of described power cell.
Preferably, described power cell comprises DC capacitor and the bridge circuit in parallel with described DC capacitor.
Preferably, described DC capacitor is film electric capacitor or electrochemical capacitor.
Preferably, described bridge circuit comprises four IGBT modules.
Preferably, described power supply unit is connected with the both sides of the DC capacitor of described adjacent power unit.
Preferably, described power supply unit comprises reduction voltage circuit, rectification circuit and voltage stabilizing circuit.
Preferably, described reduction voltage circuit is direct-current voltage reducing circuit.
Preferably, the electric energy input of described power supply unit is connected with the power take-off of described adjacent power unit.
Preferably, described power supply unit comprises reduction voltage circuit, rectification circuit and voltage stabilizing circuit.
Preferably, described reduction voltage circuit is ac buck circuit.
As can be seen from the above technical solutions, the shunting device of the power cell of the static reacance generator that the application provides comprises by-pass unit and power supply unit, power supply unit is for powering to by-pass unit, its electric energy obtains from adjacent power unit, rather than all shunting device obtains electric energy from an alternating current source.So just can avoid under centralized power supply system causing because alternating current source loses efficacy the problem that shunting device electricity out of hand cannot effective action, thereby guarantee that whole stillness wattless occurrence apparatus can not enter runaway condition.
In addition, the electric energy of the disclosed shunting device of the present embodiment is taken from adjacent power unit, and wiring is relatively simple and wiring is shorter, also can save to a certain extent cost.
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, accompanying drawing in the following describes is only some embodiment of 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.
Fig. 1 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of the embodiment of the present application;
Fig. 2 is the structure chart of the disclosed power cell of the embodiment of the present application;
Fig. 3 is the connection layout of the disclosed shunting device of the embodiment of the present application and adjacent power unit;
Fig. 4 is the another kind of connection layout of the disclosed shunting device of the embodiment of the present application and adjacent power unit;
Fig. 5 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of another embodiment of the application;
Fig. 6 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of the another embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the 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 belong to the scope of the application's protection.
Embodiment mono-
Fig. 1 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of the embodiment of the present application.
As shown in Figure 1, the disclosed shunting device 11 of the present embodiment comprises by-pass unit 111 and power supply unit 112, and power supply unit 112 is connected with by-pass unit 111.
When breaking down, power cell 10 can produce a fault-signal, by-pass unit 111 bypasses this power cell 10 according to this fault-signal, other power cells can also work on like this, to guarantee that whole static reacance generator can be not out of service because of the fault of a trouble unit 10.
Power supply unit 112 is for controlling electricity to these by-pass unit 111 outputs, and controlling electricity is the working power of by-pass unit 111 normal work.
The adjacent power unit 20 that the power input of power supply unit 112 is adjacent with this power cell 10 is connected, and from adjacent power unit 20, obtains electric energy.
As can be seen from the above technical solutions, the shunting device of the power cell of the disclosed static reacance generator of the present embodiment comprises by-pass unit and power supply unit, power supply unit is for powering to by-pass unit, its electric energy obtains from adjacent power unit, rather than all shunting device obtains electric energy from an alternating current source.So just can avoid under centralized power supply system causing because alternating current source loses efficacy the problem that shunting device electricity out of hand cannot effective action, thereby guarantee that whole stillness wattless occurrence apparatus can not enter runaway condition.
In addition, the electric energy of the disclosed shunting device of the present embodiment is taken from adjacent power unit, and wiring is relatively simple and wiring is shorter, also can save to a certain extent cost.
Power cell 10 in the present embodiment comprises DC capacitor C and bridge circuit, and as shown in Figure 2, DC capacitor C and bridge circuit are in parallel.DC capacitor C preferred film electric capacitor, bridge circuit is comprised of four IGBT module T1, T2, T3 and T4.The output of bridge circuit is connected with shunting device 11.
DC capacitor C preferred film electric capacitor or electrochemical capacitor.
Between two power cells, can mutually to the other side's shunting device, power, as shown in Figure 3; Also can between a plurality of power cells, mutually power successively, as shown in Figure 4.
For concrete power taking point, can be the both sides of the DC capacitor of power cell, can be also the power take-off of bridge circuit, with two embodiment, illustrate below.
Embodiment bis-
Fig. 5 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of another embodiment of the application.
As shown in Figure 5, the shunting device 11 of the disclosed power cell 10 of the present embodiment comprises by-pass unit 111 and power supply unit 112, and power supply unit 112 is connected with by-pass unit 111, for controlling electricity to by-pass unit 111 outputs.
Power supply unit 112 comprises reduction voltage circuit 113, rectification circuit 114 and voltage stabilizing circuit 115, and rectification circuit 114 is connected with reduction voltage circuit 113, voltage stabilizing circuit 115 respectively.
Reduction voltage circuit 113 is connected with the both sides of the DC capacitor C of adjacent power unit 20, from the both sides of DC capacitor C, obtains electric energy, and the rectification of process rectification circuit 114, then by voltage stabilizing circuit 115, to by-pass unit 111, powers.
Because the voltage of DC capacitor C both sides is direct voltage, so the preferred direct-current voltage reducing circuit of reduction voltage circuit 113.
Fig. 6 is the structure chart of shunting device of the power cell of the disclosed a kind of static reacance generator of the another embodiment of the application.
As shown in Figure 6, the shunting device 11 of the disclosed power cell 10 of the present embodiment comprises by-pass unit 111 and power supply unit 112, and power supply unit 112 is connected with by-pass unit 111, for controlling electricity to by-pass unit 111 outputs.
Power supply unit 112 comprises reduction voltage circuit 113, rectification circuit 114 and voltage stabilizing circuit 115, and rectification circuit 114 is connected with reduction voltage circuit 113, voltage stabilizing circuit 115 respectively.
Reduction voltage circuit 113 is connected with the power take-off of the bridge circuit of adjacent power unit 20, from power take-off, obtains electric energy, and the rectification of process rectification circuit 114, then by voltage stabilizing circuit 115, to by-pass unit 111, powers.
Because the electric energy of power take-off output is alternating current, so the preferred ac buck circuit of reduction voltage circuit 113.
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 shunting device for the power cell of static reacance generator, is characterized in that, comprising:
By-pass unit, for falling described power unit by-pass according to fault-signal;
Power supply unit, for controlling electricity to described by-pass unit output;
The electric energy input of described power supply unit is connected with the adjacent power unit of described power cell.
2. shunting device as claimed in claim 1, is characterized in that, described power cell comprises DC capacitor and the bridge circuit in parallel with described DC capacitor.
3. shunting device as claimed in claim 2, is characterized in that, described DC capacitor is film electric capacitor or electrochemical capacitor.
4. shunting device as claimed in claim 2, is characterized in that, described bridge circuit comprises four IGBT modules.
5. the shunting device as described in claim 1～4 any one, is characterized in that, described power supply unit is connected with the both sides of the DC capacitor of described adjacent power unit.
6. shunting device as claimed in claim 5, is characterized in that, described power supply unit comprises reduction voltage circuit, rectification circuit and voltage stabilizing circuit.
7. shunting device as claimed in claim 6, is characterized in that, described reduction voltage circuit is direct-current voltage reducing circuit.
8. the shunting device as described in claim 1～4 any one, is characterized in that, the electric energy input of described power supply unit is connected with the power take-off of described adjacent power unit.
9. shunting device as claimed in claim 8, is characterized in that, described power supply unit comprises reduction voltage circuit, rectification circuit and voltage stabilizing circuit.
10. shunting device as claimed in claim 9, is characterized in that, described reduction voltage circuit is ac buck circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854242.8U CN203911485U (en) | 2013-12-23 | 2013-12-23 | Bypass device of power unit of static var generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854242.8U CN203911485U (en) | 2013-12-23 | 2013-12-23 | Bypass device of power unit of static var generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911485U true CN203911485U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320854242.8U Expired - Lifetime CN203911485U (en) | 2013-12-23 | 2013-12-23 | Bypass device of power unit of static var generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203911485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154632A (en) * | 2017-06-22 | 2017-09-12 | 特变电工西安电气科技有限公司 | A kind of recognition methods of power unit by-pass state |
| CN109378831A (en) * | 2018-12-25 | 2019-02-22 | 思源清能电气电子有限公司 | A kind of control device and control method for SVG equipment by-pass switch |
-
2013
- 2013-12-23 CN CN201320854242.8U patent/CN203911485U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154632A (en) * | 2017-06-22 | 2017-09-12 | 特变电工西安电气科技有限公司 | A kind of recognition methods of power unit by-pass state |
| CN109378831A (en) * | 2018-12-25 | 2019-02-22 | 思源清能电气电子有限公司 | A kind of control device and control method for SVG equipment by-pass switch |
| CN109378831B (en) * | 2018-12-25 | 2022-02-11 | 思源清能电气电子有限公司 | Control device and control method for bypass switch of SVG equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |