CN203722241U - Power unit of static var generator and power unit bypass device - Google Patents
Power unit of static var generator and power unit bypass device Download PDFInfo
- Publication number
- CN203722241U CN203722241U CN201320837339.8U CN201320837339U CN203722241U CN 203722241 U CN203722241 U CN 203722241U CN 201320837339 U CN201320837339 U CN 201320837339U CN 203722241 U CN203722241 U CN 203722241U
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- bypass
- circuit
- control circuit
- power cell
- drive
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- 230000003068 static effect Effects 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method 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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Abstract
The utility model provides a power unit of a static var generator and a power unit bypass device. The bypass device comprises a power unit, a bypass controller and a main controller. The power unit comprises an H-bridge circuit, a drive control circuit, a bypass control circuit and a bypass circuit, wherein the drive control circuit is connected to the main controller and the H-bridge circuit to form a drive control part of the bypass device, and the bypass control circuit is connected to the bypass controller and the bypass circuit to form a bypass control part of the bypass device. As the drive control part and the bypass control part of the bypass device are independent from each other, the bypass circuit and the drive control circuit in the power unit are separated, and do not share a set of optical fiber and master control communication. Therefore, when a fault happens to the drive control circuit, actions of the bypass circuit are not affected, and meanwhile, interference between the bypass circuit and the drive control circuit is avoided.
Description
Technical field
The utility model relates to static reacance generator technical field, more particularly, relates to a kind of power cell and power unit by-pass device 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.Domestic SVG is taking chain type as main, and electric pressure mainly contains 6kV, 10kV and 35kV.Chain type SVG is made up of multiple power cells, and the quantity of power cell is determined by electric pressure.
Due to power cell structure complexity and quantity more, therefore the fault of chain type SVG concentrates on power cell conventionally.For reducing the failure rate of chain type SVG, bypass circuit is set at present conventionally in power cell, with can auto by pass when the power cell fault, make chain type SVG can continue to move.
But, bypass circuit in power cell in existing chain type SVG and Drive and Control Circuit are not separately, they share a unjacketed optical fiber and master control communication, like this, in the time that Drive and Control Circuit breaks down, easily cause bypass circuit to move, and Drive and Control Circuit also easily causes interference to bypass circuit, make bypass circuit misoperation.
Utility model content
In view of this, the utility model provides a kind of power cell and power unit by-pass device of static reacance generator, to improve the reliability of bypass circuit work, and then improves the reliability of static reacance generator work.
A power cell for static reacance generator, comprising:
H bridge circuit;
Be connected with described H bridge circuit, obtain the fault signal of telecommunication of described H bridge circuit output, and the described fault signal of telecommunication is exported to the Drive and Control Circuit of extraneous control unit;
Obtain the bypass enable signal of described extraneous control unit output, and described bypass enable signal is converted into the bypass control circuit of bypass connection control signal;
Be connected with described H bridge circuit, described bypass control circuit respectively, carry out the bypass circuit of switching according to the described bypass connection control signal of described bypass control circuit output.
Preferably, described H bridge circuit and described Drive and Control Circuit are passed through twisted pair line connection.
Preferably, described bypass control circuit is connected by cable with described bypass circuit.
Preferably, the DC bus of the power end of described Drive and Control Circuit and described power cell self is connected.
Preferably, the power end of described bypass control circuit is connected with the DC bus of adjacent power unit.
Preferably, described bypass circuit is thyristor bypass circuit.
Preferably, described bypass circuit is insulated gate bipolar transistor circuit.
Preferably, described bypass circuit is contactor bypass circuit.
A kind of power unit by-pass device, comprising:
Power cell described in above-mentioned any one;
Be connected with the described bypass control circuit in described power cell, for export the bypass controller of described bypass enable signal to described bypass control circuit;
Be connected with the described Drive and Control Circuit in described bypass controller, described power cell respectively, for obtaining the described fault signal of telecommunication of described Drive and Control Circuit output, and the described fault signal of telecommunication is converted into the bypass instruction signal of telecommunication and exports to the main controller of described bypass controller.
Preferably, described bypass controller is connected by optical fiber with described bypass control circuit.
Preferably, described main controller is connected by optical fiber with described Drive and Control Circuit.
Can find out from above-mentioned technical scheme, the utility model provides a kind of power cell and power unit by-pass device of static reacance generator, power unit by-pass device comprises power cell, bypass controller and main controller, power cell comprises H bridge circuit, Drive and Control Circuit, bypass control circuit and bypass circuit, wherein, Drive and Control Circuit is connected with main controller, H bridge circuit respectively, forms the drive control part in power unit by-pass device; Bypass control circuit is connected with bypass controller, bypass circuit respectively, forms the Bypass Control part in power unit by-pass device.Due to the drive control part in power unit by-pass device and Bypass Control part relatively independent, so, make bypass circuit in power cell and Drive and Control Circuit separately, make it no longer share a unjacketed optical fiber and master control communication.Therefore, in the time that Drive and Control Circuit breaks down, do not affect the action of bypass circuit, also effectively avoid the phase mutual interference between Drive and Control Circuit and bypass circuit simultaneously, thereby improve the reliability of bypass circuit work, and then improved the reliability of static reacance generator work.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment 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 embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the power cell of the disclosed a kind of static reacance generator of the utility model embodiment;
Fig. 2 is the circuit diagram of the disclosed a kind of thyristor bypass circuit of the utility model embodiment;
Fig. 3 is the circuit diagram of the disclosed a kind of contactor bypass circuit of the utility model embodiment;
Fig. 4 (a) is the circuit diagram of the disclosed a kind of IGBT circuit of the utility model embodiment;
Fig. 4 (b) is the circuit diagram of the disclosed another kind of IGBT circuit of the utility model embodiment;
Fig. 5 is the structural representation of the disclosed a kind of power unit by-pass device of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model embodiment discloses a kind of structural representation of power cell of static reacance generator, and power cell 100 comprises: H bridge circuit 101, Drive and Control Circuit 102, bypass control circuit 103 and bypass circuit 104;
Wherein:
Drive and Control Circuit 102 is connected with H bridge circuit 101, the fault signal of telecommunication of exporting for obtaining H bridge circuit 101, and export the described signal of telecommunication to extraneous control unit.
The bypass enable signal that bypass control circuit 103 is exported for obtaining described extraneous control unit, and described bypass enable signal is converted into bypass connection control signal.
Bypass circuit 104 is connected with H bridge circuit 101, bypass control circuit 103 respectively, and the bypass connection control signal that bypass circuit 104 is exported according to bypass control circuit 103 is carried out switching.
It should be noted is that, the first common port T1 of H bridge circuit 101 and bypass circuit 104 and the second common port T2 are as the output of power cell 100.
In summary it can be seen, bypass circuit 104 and Drive and Control Circuit 102 no longer share a unjacketed optical fiber and master control communication, but are separated from each other.Therefore, in the time that Drive and Control Circuit 102 breaks down, do not affect the action of bypass circuit 104, also effectively avoided the phase mutual interference between Drive and Control Circuit 102 and bypass circuit 104 simultaneously, thereby improve the reliability that bypass circuit 104 is worked, and then improved the reliability of static reacance generator work.
Wherein, the power cell in the present embodiment is the power cell in cascade STATCOM.
Concrete, H bridge circuit 101 can pass through twisted pair line connection with Drive and Control Circuit 102.In actual connection procedure, for ensureing the unimpeded of information between H bridge circuit 101 and Drive and Control Circuit 102, conventionally adopt 4 groups of twisted-pair feeders.
Bypass control circuit 103 can be connected by cable with bypass circuit 104.
It should be noted is that, the DC bus of the power end of Drive and Control Circuit 102 and power cell self is connected.Specifically, referring to Fig. 1, capacitor C is connected in the two ends of H bridge circuit 101 in parallel, with store electrical energy.The power supply positive input terminal of Drive and Control Circuit 102 connects the positive plate (also can think the DC+ end of DC bus) of capacitor C, and the power-input of Drive and Control Circuit 102 connects the negative plate (also can think the DC-end of DC bus) of capacitor C.
It will be appreciated by persons skilled in the art that in the time that H bridge circuit 101 breaks down, for ensureing the normal work of bypass control circuit 103, the power end of bypass control circuit 103 is connected with the DC bus of adjacent power unit.
It should be noted is that, bypass circuit 104 can be mechanical bypass (for example contactor), can be also electronics bypass (for example, IGBT, thyristor etc.).
Wherein, the English full name of IGBT is Insulated Gate Bipolar Transistor, and Chinese is interpreted as insulated gate bipolar transistor.
Concrete, in the time that bypass circuit 104 is thyristor bypass circuit, the circuit diagram of thyristor bypass circuit is specifically referring to Fig. 2, thyristor bypass circuit comprises: the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, reactor L, capacitor C 1, thyristor V1 and resistance R;
The negative electrode of the first diode D1 is connected with the negative electrode of the 3rd diode D3, and the anode of the first diode D1 is connected with the negative electrode of the second diode D2, the anodic bonding of the anode of the second diode D2 and the 4th diode D4;
The negative electrode of the 3rd diode D3 is connected with the positive plate of capacitor C 1, the input of thyristor V1 respectively, the anode of the 3rd diode D3 is connected with the negative electrode of the 4th diode D4, and the anode of the 4th diode D4 is connected with one end of resistance R, the output of thyristor V1 respectively;
The other end of the negative plate contact resistance R of capacitor C 1,
One end of the common port linked reactor L of the first diode D1 and the second diode D2, the other end of reactor L is as a link of thyristor bypass circuit, and the common port of the 3rd diode D3 and the 4th diode D4 is as another link of thyristor bypass circuit.
Because the operation principle of thyristor bypass circuit is as well known to those skilled in the art, repeat no more herein.
In the time that bypass circuit 104 is contactor bypass circuit, the circuit diagram of contactor bypass circuit, specifically referring to Fig. 3, in like manner, because the operation principle of contactor bypass circuit is as well known to those skilled in the art, repeats no more herein.
In the time that bypass circuit 104 is IGBT circuit, the circuit diagram of IGBT circuit can be Fig. 4 (a), can be also Fig. 4 (b), comprises two IGBT at Fig. 4 (a), the emitter of two IGBT connects, and the collector electrode of two IGBT is respectively as two links of whole IGBT circuit.
Annexation in IGBT circuit and Fig. 2 thyristor bypass circuit that Fig. 4 (b) represents is basic identical, just need to change thyristor into IGBT, and the collector electrode of IGBT connects the positive plate of capacitor C 1, the other end of the emitter contact resistance R of IGBT, and in IGBT circuit without reactor L, the common port of the first diode D1 and the second diode D2 is as a link of IGBT circuit, and the common port of the 3rd diode D3 and the 4th diode D4 is as another link of IGBT circuit.
Referring to Fig. 5, the structural representation of the disclosed a kind of power unit by-pass device of the utility model embodiment, power unit by-pass device comprises power cell 100, bypass controller 200 and the main controller 300 in the various embodiments described above;
Wherein:
Bypass controller 200 is connected with the bypass control circuit 103 in power cell 100, for exporting bypass enable signal to bypass control circuit 103;
Main controller 300 is connected with the Drive and Control Circuit 102 in bypass controller 200, power cell 100 respectively, the fault signal of telecommunication that main controller 300 is exported for obtaining Drive and Control Circuit 102, and the described fault signal of telecommunication is converted into the bypass instruction signal of telecommunication exports bypass controller 200 to.
It should be noted is that, bypass controller 200 is connected by optical fiber with bypass control circuit 103, and this optical fiber comprises two, and wherein one for to bypass control circuit 103 output electrical signals, and another root is for obtaining the signal of telecommunication that bypass control circuit 103 is exported.
Main controller 300 is connected by optical fiber with Drive and Control Circuit 102, and this light comprises two, and wherein one for to Drive and Control Circuit 102 output electrical signals, and another root is for obtaining the signal of telecommunication that Drive and Control Circuit 102 is exported.
Concrete, the bypass course of action in power unit by-pass device is as follows:
Drive and Control Circuit 102 is obtained the fault signal of telecommunication that H bridge circuit 101 produces, and exports this fault signal of telecommunication to main controller 300 by optical fiber;
Wherein, the fault signal of telecommunication can be one or more in overvoltage of direct current, unit overtemperature, IGBT overcurrent.
Main controller 300, according to the fault signal of telecommunication, is judged this power cell and can be carried out after bypass circuit 104, and main controller 300 is converted into the bypass instruction signal of telecommunication by the fault signal of telecommunication and exports bypass controller 200 to;
Bypass controller 200 obtains the bypass instruction signal of telecommunication, then exports bypass enable signal by optical fiber to bypass control circuit 103;
Bypass control circuit 103, according to the bypass enable signal obtaining, is exported bypass connection control signal to bypass circuit 104, thereby controls bypass circuit 104 switchings;
After time delay after a while, bypass control circuit 103 obtains the bypass condition signal (bypass successful connection or unsuccessful) that bypass circuit 104 feeds back, and bypass control circuit 103 exports bypass condition signal to bypass controller 200 by optical fiber;
Bypass controller 200 exports the bypass condition signal obtaining to main controller 300;
Main controller 300 obtains bypass condition signal, if the success of fault power unit bypass, static reacance generator continues band bypass operation, if bypass is unsuccessful, static reacance generator is out of service.
In summary it can be seen, Drive and Control Circuit 102 is connected with main controller 300, H bridge circuit 101 respectively, forms the drive control part in power unit by-pass device; Bypass control circuit 103 is connected with bypass controller 200, bypass circuit 104 respectively, forms the Bypass Control part in power unit by-pass device.Due to the drive control part in power unit by-pass device and Bypass Control part relatively independent, so, make bypass circuit 104 in power cell and Drive and Control Circuit 102 separately, make it no longer share a unjacketed optical fiber and master control communication.Therefore, in the time that Drive and Control Circuit 102 breaks down, do not affect the action of bypass circuit 104, also effectively avoided the phase mutual interference between Drive and Control Circuit 102 and bypass circuit 104 simultaneously, thereby improve the reliability that bypass circuit 104 is worked, and then improved the reliability of static reacance generator work.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model 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 (11)
1. a power cell for static reacance generator, is characterized in that, comprising:
H bridge circuit;
Be connected with described H bridge circuit, obtain the fault signal of telecommunication of described H bridge circuit output, and the described fault signal of telecommunication is exported to the Drive and Control Circuit of extraneous control unit;
Obtain the bypass enable signal of described extraneous control unit output, and described bypass enable signal is converted into the bypass control circuit of bypass connection control signal;
Be connected with described H bridge circuit, described bypass control circuit respectively, carry out the bypass circuit of switching according to the described bypass connection control signal of described bypass control circuit output.
2. power cell according to claim 1, is characterized in that, described H bridge circuit and described Drive and Control Circuit are passed through twisted pair line connection.
3. power cell according to claim 1, is characterized in that, described bypass control circuit is connected by cable with described bypass circuit.
4. power cell according to claim 1, is characterized in that, the DC bus of the power end of described Drive and Control Circuit and described power cell self is connected.
5. power cell according to claim 1, is characterized in that, the power end of described bypass control circuit is connected with the DC bus of adjacent power unit.
6. power cell according to claim 1, is characterized in that, described bypass circuit is thyristor bypass circuit.
7. power cell according to claim 1, is characterized in that, described bypass circuit is insulated gate bipolar transistor circuit.
8. power cell according to claim 1, is characterized in that, described bypass circuit is contactor bypass circuit.
9. a power unit by-pass device, is characterized in that, comprising:
Power cell described in claim 1 to 8 any one;
Be connected with the described bypass control circuit in described power cell, for export the bypass controller of described bypass enable signal to described bypass control circuit;
Be connected with the described Drive and Control Circuit in described bypass controller, described power cell respectively, for obtaining the described fault signal of telecommunication of described Drive and Control Circuit output, and the described fault signal of telecommunication is converted into the bypass instruction signal of telecommunication and exports to the main controller of described bypass controller.
10. power unit by-pass device according to claim 9, is characterized in that, described bypass controller is connected by optical fiber with described bypass control circuit.
11. power unit by-pass devices according to claim 9, is characterized in that, described main controller is connected by optical fiber with described Drive and Control Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837339.8U CN203722241U (en) | 2013-12-18 | 2013-12-18 | Power unit of static var generator and power unit bypass device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837339.8U CN203722241U (en) | 2013-12-18 | 2013-12-18 | Power unit of static var generator and power unit bypass device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722241U true CN203722241U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320837339.8U Expired - Lifetime CN203722241U (en) | 2013-12-18 | 2013-12-18 | Power unit of static var generator and power unit bypass device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018868A (en) * | 2020-07-31 | 2020-12-01 | 科华恒盛股份有限公司 | UPS bypass drive unit and UPS bypass drive system |
-
2013
- 2013-12-18 CN CN201320837339.8U patent/CN203722241U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112018868A (en) * | 2020-07-31 | 2020-12-01 | 科华恒盛股份有限公司 | UPS bypass drive unit and UPS bypass drive system |
| CN112018868B (en) * | 2020-07-31 | 2022-10-21 | 科华数据股份有限公司 | UPS bypass drive unit and UPS bypass drive system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 570216 7 Haikou Free Trade Zone, 168 Nanhai Road, Haikou, Hainan. Patentee after: HAINAN JINPAN INTELLIGENT TECHNOLOGY CO.,LTD. Address before: 570216 7 Haikou Free Trade Zone, 168 Nanhai Road, Haikou, Hainan. Patentee before: HAINAN JINPAN ELECTRIC Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |