CN202798002U - Chained static synchronous compensator - Google Patents
Chained static synchronous compensator Download PDFInfo
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- CN202798002U CN202798002U CN2012204949407U CN201220494940U CN202798002U CN 202798002 U CN202798002 U CN 202798002U CN 2012204949407 U CN2012204949407 U CN 2012204949407U CN 201220494940 U CN201220494940 U CN 201220494940U CN 202798002 U CN202798002 U CN 202798002U
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 38
- 239000003990 capacitor Substances 0.000 claims abstract description 48
- 239000004065 semiconductor Substances 0.000 claims description 61
- 230000008859 change Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model relates to a chained static synchronous compensator and belongs to the field of electric automation equipment. The chained static synchronous compensator comprises three conversion current chains, three filter reactors, three current-limiting resistors, one three-phase contactor and three filter capacitor branches. One ends of the three conversion current chains are connected together, the other ends of the three conversion current chains are connected to one ends of the three filter reactors, the other ends of the three filter reactors are connected to one ends of three groups of normally open contacts of the three-phase contactor, the other ends of the three groups of normally open contacts of the three-phase contactor are used as three-phase alternating current output ends of the chained static synchronous compensator, one ends of the three filter capacitor branches are connected to the three-phase alternating current output ends of the chained static synchronous compensator, the other ends of the three filter capacitor branches are connected together, and the three current-limiting resistors are respectively in parallel connection with two ends of the three groups of normally open contacts of the three-phase contactor. The chained static synchronous compensator achieves high voltage application and can adopt low-voltage-grade insulated gate bipolar translator (IGBT) devices, thereby being capable of reducing the number of H bridges in series and reducing device cost and volume.
Description
Technical field
The utility model relates to a kind of chain static synchronous compensator, belongs to the electric automatization apparatus field.
Background technology
Chain static synchronous compensator (STATCOM or DSTATCOM) is novel dynamic reactive and the harmonic compensation device that a kind of employing chain type voltage source converter (based on the voltage source converter of single-phase two level H-bridges series connection) is realized, having rapid dynamic response speed, starting without advantages such as impacting, regulate continuously, floor space is little, is the developing direction of STATCOM.
When chain static synchronous compensator is realized higher alternating voltage output (6kV-35kV), if adopt the lower 1700V IGBT of price to realize, can cause the H bridge number of connecting more, cause the cost of whole device higher and volume is larger; And adopt 3300V or more during the IGBT of voltage levels, and although the H bridge number of series connection is less, 3300V or the price of IGBT of voltage levels more own is higher, the cost of whole device still can't reduce.Therefore, need to seek a kind of new chain type voltage source converter and realize chain static synchronous compensator.
Summary of the invention
The purpose of this utility model is to propose a kind of chain static synchronous compensator, overcome the deficiency of prior art, so that when realizing high-voltage applications, can use the IGBT device that electric pressure is lower, price is lower, when solving high-voltage applications, chain static synchronous compensator maybe needs to adopt the IGBT device of high voltage grade to cause because H bridge series connection number the is more higher problem of installation cost.
The chain static synchronous compensator that the utility model proposes comprises three change of current chains, three filter reactors, three current-limiting resistances, a three-phase contactor and three filter capacitor branch roads; One end of described three change of current chains connects together, the other end of three change of current chains is connected respectively to an end of described three filter reactors, the other end of three filter reactors is connected respectively to an end of three groups of normally opened contacts of three-phase contactor, and the other end of three groups of normally opened contacts of three-phase contactor is as the three-phase alternating current output of described chain static synchronous compensator; Described filter capacitor props up filtering capacitor of route and a resistor in series forms, the resistor end of three filter capacitor branch roads is connected respectively to the three-phase alternating current output of described chain static synchronous compensator, and the filtering capacitor end of three filter capacitor branch roads connects together; Three current-limiting resistances are parallel to respectively the two ends of three groups of normally opened contacts of three-phase contactor.
In the above-mentioned chain static synchronous compensator, described change of current chain comprises a plurality of unsteady flow modules, and the ac output end of a plurality of unsteady flow modules adopts and is connected in series, and forms two ac output ends.
This unsteady flow module comprises the first direct current capacitor, the second direct current capacitor and two three level brachium pontis; The positive terminal of described two three level brachium pontis connects together with the positive terminal of the first direct current capacitor, the negative pole end of two three level brachium pontis connects together with the negative pole end of the second direct current capacitor, and the zero line side of two three level brachium pontis connects together with the positive terminal of the negative pole end of the first direct current capacitor and the second direct current capacitor; The interchange end of two three level brachium pontis is respectively as the ac output end of this unsteady flow module.
Three level brachium pontis wherein comprise the first clamping diode, the second clamping diode, the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch, the 4th semiconductor switch, the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the 4th fly-wheel diode; The collector electrode of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the negative electrode of the 4th fly-wheel diode respectively, and the emitter of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the anode of the 4th fly-wheel diode respectively; The collector electrode of described the first semiconductor switch is as the positive terminal of described three level brachium pontis; The emitter of described the 4th semiconductor switch is as the negative pole end of three level brachium pontis; The anode of described the first clamping diode is connected as the zero line side of described three level brachium pontis with the negative electrode of the second clamping diode, the negative electrode of the first clamping diode is connected to the emitter of described the first semiconductor switch and the collector electrode of the second semiconductor switch, the anodic bonding of the second clamping diode is to the emitter of described the 3rd semiconductor switch and the collector electrode of the 4th semiconductor switch, the emitter of the second semiconductor switch rear end that exchanges as described three level brachium pontis that is connected with the collector electrode of the 3rd semiconductor switch.
The chain static synchronous compensator that the utility model proposes, its advantage are when realizing high-voltage applications, can adopt the IGBT device of low-voltage-grade, thereby can reduce the H bridge quantity of series connection, reduction installation cost and volume.
Description of drawings
Fig. 1 is the circuit theory diagrams of chain static synchronous compensator of the present utility model.
Fig. 2 is in the chain static synchronous compensator shown in the figure, the circuit theory diagrams of change of current chain.
Fig. 3 is in the change of current chain shown in Figure 2, the circuit theory diagrams of unsteady flow module.
Fig. 4 is in the unsteady flow module shown in Figure 3, the circuit theory diagrams of three level brachium pontis.
Fig. 5 is the circuit theory diagrams of the another kind of delta connection of chain static synchronous compensator of the present utility model.
Embodiment
The chain static synchronous compensator that the utility model proposes comprises three change of current chains, three filter reactors, three current-limiting resistances, a three-phase contactor and three filter capacitor branch roads; One end of described three change of current chains connects together, the other end of three change of current chains is connected respectively to an end of described three filter reactors, the other end of three filter reactors is connected respectively to an end of three groups of normally opened contacts of three-phase contactor, and the other end of three groups of normally opened contacts of three-phase contactor is as the three-phase alternating current output of described chain static synchronous compensator; Described filter capacitor props up filtering capacitor of route and a resistor in series forms, the resistor end of three filter capacitor branch roads is connected respectively to the three-phase alternating current output of described chain static synchronous compensator, and the filtering capacitor end of three filter capacitor branch roads connects together; Three current-limiting resistances are parallel to respectively the two ends of three groups of normally opened contacts of three-phase contactor.
In the above-mentioned chain static synchronous compensator, described change of current chain comprises a plurality of unsteady flow modules, and the ac output end of a plurality of unsteady flow modules adopts and is connected in series, and forms two ac output ends.
This unsteady flow module comprises the first direct current capacitor, the second direct current capacitor and two three level brachium pontis; The positive terminal of described two three level brachium pontis connects together with the positive terminal of the first direct current capacitor, the negative pole end of two three level brachium pontis connects together with the negative pole end of the second direct current capacitor, and the zero line side of two three level brachium pontis connects together with the positive terminal of the negative pole end of the first direct current capacitor and the second direct current capacitor; The interchange end of two three level brachium pontis is respectively as the ac output end of this unsteady flow module.
Three level brachium pontis wherein comprise the first clamping diode, the second clamping diode, the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch, the 4th semiconductor switch, the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the 4th fly-wheel diode; The collector electrode of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the negative electrode of the 4th fly-wheel diode respectively, and the emitter of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the anode of the 4th fly-wheel diode respectively; The collector electrode of described the first semiconductor switch is as the positive terminal of described three level brachium pontis; The emitter of described the 4th semiconductor switch is as the negative pole end of three level brachium pontis; The anode of described the first clamping diode is connected as the zero line side of described three level brachium pontis with the negative electrode of the second clamping diode, the negative electrode of the first clamping diode is connected to the emitter of described the first semiconductor switch and the collector electrode of the second semiconductor switch, the anodic bonding of the second clamping diode is to the emitter of described the 3rd semiconductor switch and the collector electrode of the 4th semiconductor switch, the emitter of the second semiconductor switch rear end that exchanges as described three level brachium pontis that is connected with the collector electrode of the 3rd semiconductor switch.
Figure 1 shows that the circuit theory diagrams of the chain static synchronous compensator that the utility model proposes.Among Fig. 1, chain static synchronous compensator comprises three change of current chains (1), three filter reactors (2) LA/LB/LC, three current-limiting resistances (3) RA/RB/RC, three-phase contactor (4) JZ and three filter capacitor branch roads (5) R1/C1/R2/C2/R3/C3; One end of three change of current chains connects together, the other end is connected respectively to the end of three filter reactor LA/LB/LC, the other end of three filter reactor LA/LB/LC is connected respectively to an end of three groups of normally opened contacts of three-phase contactor JZ, and the other end of three groups of normally opened contacts of three-phase contactor JZ is as the three-phase alternating current output terminals A/B/C of described novel chain static synchronous compensator; The end of three filter capacitor branch road R1/C1/R2/C2/R3/C3 is connected respectively to the three-phase alternating current output terminals A/B/C of described novel chain static synchronous compensator, and the other end of three filter capacitor branch roads connects together; Three current-limiting resistance RA/RB/RC are parallel to respectively three groups of normally opened contact two ends of three-phase contactor JZ.
As shown in Figure 2, every change of current chain comprises a plurality of unsteady flow modules (6), and the ac output end of a plurality of unsteady flow modules adopts to be connected in series and forms two ac output ends.
As shown in Figure 3, each unsteady flow module comprises the first direct current capacitor C1 (8), the second direct current capacitor C2 (9), two three level brachium pontis (7); The positive terminal "+" of two three level brachium pontis (7) and the positive terminal of the first direct current capacitor C1 connect together, the negative pole end "-" of two three level brachium pontis connects together with the negative pole end of the second direct current capacitor C2, and the zero line side N of two three level brachium pontis connects together with the positive terminal of the negative pole end of the first direct current capacitor and the second direct current capacitor; The interchange end of two three level brachium pontis is respectively as the ac output end O1/O2 of this unsteady flow module.
As shown in Figure 4, three level brachium pontis comprise two clamping diodes (10) DC1/DC2, four semiconductor switch (11) S1/S2/S3/S4 and four fly-wheel diodes (12) D1/D2/D3/D4.S1/S2/S3/S4 forms inverse parallel with D1/D2/D3/D4 respectively and is connected.The collector electrode of S1 is as the positive terminal "+" of three level brachium pontis; The emitter of S4 is as the negative pole end "-" of three level brachium pontis; The anode of DC1 connects together the zero line side N as three level brachium pontis with the negative electrode of DC2; The negative electrode of DC1 is connected to the emitter of S1 and the collector electrode of S2; The anode utmost point of DC2 is connected to the emitter of S3 and the collector electrode of S4; The emitter of S2 is connected with the collector electrode of S3, as the interchange end O of three level brachium pontis.
As shown in Figure 5, the change of current chain of novel chain static synchronous compensator of the present utility model is also with the filter reactor series arm and can be adopted triangle to connect.
The utility model circuit also can be deformed into single-phase chain static synchronous compensator and use, and any equivalent transformation circuit of doing based on the utility model circuit all belongs to protection range of the present utility model.
Claims (4)
1. a chain static synchronous compensator is characterized in that, this chain static synchronous compensator comprises three change of current chains, three filter reactors, three current-limiting resistances, a three-phase contactor and three filter capacitor branch roads; One end of described three change of current chains connects together, the other end of three change of current chains is connected respectively to an end of described three filter reactors, the other end of three filter reactors is connected respectively to an end of three groups of normally opened contacts of three-phase contactor, and the other end of three groups of normally opened contacts of three-phase contactor is as the three-phase alternating current output of described chain static synchronous compensator; Described filter capacitor props up filtering capacitor of route and a resistor in series forms, the resistor end of three filter capacitor branch roads is connected respectively to the three-phase alternating current output of described chain static synchronous compensator, and the filtering capacitor end of three filter capacitor branch roads connects together; Three current-limiting resistances are parallel to respectively the two ends of three groups of normally opened contacts of three-phase contactor.
2. chain static synchronous compensator as claimed in claim 1 is characterized in that, wherein said change of current chain comprises a plurality of unsteady flow modules, and the ac output end of a plurality of unsteady flow modules adopts and is connected in series, and forms two ac output ends.
3. chain static synchronous compensator as claimed in claim 2 is characterized in that, wherein said unsteady flow module comprises the first direct current capacitor, the second direct current capacitor and two three level brachium pontis; The positive terminal of described two three level brachium pontis connects together with the positive terminal of the first direct current capacitor, the negative pole end of two three level brachium pontis connects together with the negative pole end of the second direct current capacitor, and the zero line side of two three level brachium pontis connects together with the positive terminal of the negative pole end of the first direct current capacitor and the second direct current capacitor; The interchange end of two three level brachium pontis is respectively as the ac output end of this unsteady flow module.
4. chain static synchronous compensator as claimed in claim 3, it is characterized in that wherein said three level brachium pontis comprise the first clamping diode, the second clamping diode, the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch, the 4th semiconductor switch, the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the 4th fly-wheel diode; The collector electrode of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the negative electrode of the 4th fly-wheel diode respectively, and the emitter of described the first semiconductor switch, the second semiconductor switch, the 3rd semiconductor switch and the 4th semiconductor switch is connected with described the first fly-wheel diode, the second fly-wheel diode, the 3rd fly-wheel diode and the anode of the 4th fly-wheel diode respectively; The collector electrode of described the first semiconductor switch is as the positive terminal of described three level brachium pontis; The emitter of described the 4th semiconductor switch is as the negative pole end of three level brachium pontis; The anode of described the first clamping diode is connected as the zero line side of described three level brachium pontis with the negative electrode of the second clamping diode, the negative electrode of the first clamping diode is connected to the emitter of described the first semiconductor switch and the collector electrode of the second semiconductor switch, the anodic bonding of the second clamping diode is to the emitter of described the 3rd semiconductor switch and the collector electrode of the 4th semiconductor switch, the emitter of the second semiconductor switch rear end that exchanges as described three level brachium pontis that is connected with the collector electrode of the 3rd semiconductor switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204949407U CN202798002U (en) | 2012-09-26 | 2012-09-26 | Chained static synchronous compensator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204949407U CN202798002U (en) | 2012-09-26 | 2012-09-26 | Chained static synchronous compensator |
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| CN202798002U true CN202798002U (en) | 2013-03-13 |
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| CN2012204949407U Expired - Fee Related CN202798002U (en) | 2012-09-26 | 2012-09-26 | Chained static synchronous compensator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475248A (en) * | 2013-08-30 | 2013-12-25 | 华为技术有限公司 | Power conversion circuit and power conversion system |
| US9787217B2 (en) | 2013-08-30 | 2017-10-10 | Huawei Technologies Co., Ltd. | Power conversion circuit and power conversion system |
| CN114006380A (en) * | 2021-10-31 | 2022-02-01 | 深圳市禾望电气股份有限公司 | Chain type static var generator circuit and control method |
-
2012
- 2012-09-26 CN CN2012204949407U patent/CN202798002U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475248A (en) * | 2013-08-30 | 2013-12-25 | 华为技术有限公司 | Power conversion circuit and power conversion system |
| CN103475248B (en) * | 2013-08-30 | 2016-12-07 | 华为技术有限公司 | Power conversion circuit and power conversion system |
| US9787217B2 (en) | 2013-08-30 | 2017-10-10 | Huawei Technologies Co., Ltd. | Power conversion circuit and power conversion system |
| CN114006380A (en) * | 2021-10-31 | 2022-02-01 | 深圳市禾望电气股份有限公司 | Chain type static var generator circuit and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANGJIAGANG ZHIDIAN XIWEI CONVERTER TECHNOLOGY CO Effective date: 20140616 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140616 Address after: 2, unit 2, building 388, No. 410007, West labour Road, Yuhua District, Hunan, Changsha, 201 Patentee after: Liu Siying Patentee after: Zhangjiagang Zhi electricity Xi Wei Semiconductor Converting Technology Co., Ltd Address before: 2, unit 2, building 388, No. 410007, West labour Road, Yuhua District, Hunan, Changsha, 201 Patentee before: Liu Siying |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151230 Address after: 2, unit 2, building 388, No. 410007, West labour Road, Yuhua District, Hunan, Changsha, 201 Patentee after: Liu Siying Patentee after: Zhangjiagang Smartgrid Research Institute Address before: 2, unit 2, building 388, No. 410007, West labour Road, Yuhua District, Hunan, Changsha, 201 Patentee before: Liu Siying Patentee before: Zhangjiagang Zhi electricity Xi Wei Semiconductor Converting Technology Co., Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20180926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |