CN102324850A - Chain link control power supply in chain static synchronous compensator - Google Patents
Chain link control power supply in chain static synchronous compensator Download PDFInfo
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- CN102324850A CN102324850A CN201110309812A CN201110309812A CN102324850A CN 102324850 A CN102324850 A CN 102324850A CN 201110309812 A CN201110309812 A CN 201110309812A CN 201110309812 A CN201110309812 A CN 201110309812A CN 102324850 A CN102324850 A CN 102324850A
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Abstract
The invention relates to a chain link control power supply in a chain static synchronous compensator, which consists of electricity taking isolation voltage reduction power supplies, secondary isolation power supplies and unit control circuits. An input end of each electricity taking isolation voltage reduction power supply is connected with positive and negative ends of a direct current busbar of a corresponding chain link. An output end of each electricity taking isolation voltage reduction power supply is connected with an input end of the corresponding secondary isolation power supply through a diode. An output end of each secondary isolation power supply is connected with an input end of the corresponding unit control circuit through a diode. For the chain link control power supply in the chain static synchronous compensator, the electricity taking isolation voltage reduction power supplies of adjacent two or three chain links are connected in parallel through diodes and then common points of the electricity taking isolation voltage reduction power supplies are connected with the input ends of the secondary isolation power supplies of corresponding standby chain links. The chain link control power supply has the characteristics of stability, reliability and low cost.
Description
Technical field
The present invention relates to power quality controlling field relevant device platform, relate in particular to cell voltage Balance Control in chain static synchronous compensator plant and the harmonic suppression apparatus, belong to the electric automatization equipment technical field.
Background technology
Chain-type inverter is also referred to as H bridge series connection converter; This converter is in series by the interchange output of a plurality of single-phase H bridge converters (also can be described as the cell power module); Can be widely used in the various convertor assemblys, like high voltage variable frequency speed regulator (MVD), novel STATCOM (STATCOM), generation of electricity by new energy inverter, dynamic electric voltage convalescence (DVR), active filter (APF) etc.
Adopt the novel STATCOM (STATCOM) of chain-type inverter to be called chain static synchronous compensator again, its single H bridge converter is called chain link again.When the chain type synchronous compensator was directly exported the high voltage more than the 6KV, because the withstand voltage restriction of single device for power switching, chain-type inverter is every to need more chain link to connect mutually, and controller requires the umber of pulse of output and needs the chain number of monitoring also more like this.
Because chain static synchronous compensator is usually used in exporting the application scenario (3KV ~ 35KV), make that the control power supply power supply of chain link wherein is difficult of higher alternating voltage.If from the chain-type inverter externally fed, isolating transformer need solve the problem that high withstand voltage and low office puts, and makes the power supply cost high.Therefore, need to seek a kind of highly reliable, the power supply of chain link control cheaply power supply plan.
The inner control unit power supply of chain static synchronous compensator chain-type inverter mainly is divided three classes at present: the first kind does not have alternative scheme for the DC side power taking; This scheme comprises a DC-DC insulating power supply (as shown in Figure 3); The input of insulating power supply is received this chain link DC side busbar voltage, and output is received the unit controls circuit of this chain link; Second type is not had subsequent usely for the AC side power taking, and this scheme comprises an isolating transformer and a single-phase rectification bridge and a DC-DC Switching Power Supply, and topology is as shown in Figure 4; The 3rd type is AC side power taking alternative scheme, (Tsing-Hua University exchanges power taking scheme topology) as shown in Figure 5.
At present, Tsing-Hua University is existing from the subsequent use a kind of power supply plan of AC side power taking, comprises the first single-phase isolating transformer, the second single-phase isolating transformer, the 3rd single-phase isolating transformer and D.C. regulated power supply.For the chain link 2 of chain-type inverter any chain link X in the chain link N-1 chain link; The input of the second single-phase isolating transformer is received the ac output end of adjacent left side chain link X-1; The first single-phase isolating transformer input is received the ac output end of this chain link, and the 3rd single-phase isolating transformer input is received the ac output end of adjacent the right chain link X+1.Specifically as shown in Figure 5, there is following shortcoming in this scheme: volume of transformer is big, cost is higher.
Prior art is applied to the power supply of chain link control unit, has following shortcoming:
1, when the power supply in this chain link is broken down, the power supply of chain link control unit is affected, and directly influences the control output of chain link, causes system's latch-up protection then.
2, when but the bypass fault takes place in system's grade converter; IGBT still is in controllable state in this chain link of demand; Require switching tube or switching tube conducting down on the brachium pontis of the H bridge topology left and right sides this moment; Equivalence is a lead, because the input of DC bus noenergy directly causes the power supply of chain link control unit to lose efficacy system's latch-up protection then in this chain link.
3, for AC side power taking alternative scheme, because AC side is first-harmonic 50Hz, harmonic components is very big, so there is the big and bigger problem of volume of caloric value in this power taking transformer, the cost problem of higher is arranged simultaneously.
Summary of the invention
The objective of the invention is to propose the chain link inner control unit power supply in a kind of chain static synchronous compensator; To overcome the deficiency of prior art; Solve chain link control power supply by the converter externally fed commonly used intrinsic isolating transformer dielectric voltage withstand require height and the high characteristics of cost; Simultaneously, the chain link converter that has also solved no stand-by power supply power supply commonly used can't be realized the problem of bypass.
Technical scheme of the present invention:
Chain link control power supply in a kind of chain static synchronous compensator; Form by power taking isolated buck power supply, secondary isolation power supply and unit controls circuit; The input of power taking isolated buck power supply links to each other with the DC master row positive and negative terminal of chain link; The output of power taking isolated buck power supply links to each other with the input of secondary isolation power supply through diode, and the secondary isolation power output end links to each other with the input of unit controls circuit through diode, the chain link control power supply in the described chain static synchronous compensator; Adjacent two or three chain link power taking isolated buck power supply parallel connections behind diode, the secondary isolation power input of parallel connection back common point and each subsequent use chain link links to each other.
The present invention also can be applicable to other power electronic equipments that adopts chain-type inverter.
Beneficial effect of the present invention: control power supply of the present invention, adopt the direct current side-draw that subsequent use scheme is arranged, have reliable and stable, with low cost characteristics.
Description of drawings
Fig. 1, the subsequent use control power circuit diagram sketch map of the present invention's three chain links;
Fig. 2, the subsequent use control power circuit diagram sketch map of the present invention's two chain links;
Fig. 3, prior art chain link DC side power taking scheme do not have subsequent use sketch map;
Fig. 4, prior art chain link AC side power taking scheme do not have subsequent use sketch map;
Fig. 5, the power taking of prior art chain link AC side have the alternative scheme sketch map.
Embodiment
Chain link control power supply in embodiment one, a kind of chain static synchronous compensator; Form by power taking isolated buck power supply, secondary isolation power supply and unit controls circuit; The input of power taking isolated buck power supply links to each other with the DC master row positive and negative terminal of chain link; The output of power taking isolated buck power supply links to each other with the input of secondary isolation power supply through diode; The secondary isolation power output end links to each other with the input of unit controls circuit through diode; Chain link control power supply in the described chain static synchronous compensator, adjacent three chain link power taking isolated buck power supplys are parallel connection behind diode, and the secondary isolation power input of parallel connection back common point and each subsequent use chain link links to each other.
Chain link control power supply in embodiment two, a kind of chain static synchronous compensator; Form by power taking isolated buck power supply, secondary isolation power supply and unit controls circuit; The input of power taking isolated buck power supply links to each other with the DC master row positive and negative terminal of chain link; The output of power taking isolated buck power supply links to each other with the input of secondary isolation power supply through diode; The secondary isolation power output end links to each other with the input of unit controls circuit through diode; Chain link control power supply in the described chain static synchronous compensator, adjacent two chain link power taking isolated buck power supplys are parallel connection behind diode, and the secondary isolation power input of parallel connection back common point and subsequent use chain link links to each other.
Claims (1)
1. the control of the chain link in chain static synchronous compensator power supply; Form by power taking isolated buck power supply, secondary isolation power supply and unit controls circuit; The input of power taking isolated buck power supply links to each other with the DC master row positive and negative terminal of chain link; The output of power taking isolated buck power supply links to each other with the input of secondary isolation power supply through diode; The secondary isolation power output end links to each other with the input of unit controls circuit through diode; Chain link control power supply in the described chain static synchronous compensator, adjacent two or three chain link power taking isolated buck power supply parallel connections behind diode, the secondary isolation power input of parallel connection back common point and each subsequent use chain link links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110309812A CN102324850A (en) | 2011-10-13 | 2011-10-13 | Chain link control power supply in chain static synchronous compensator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110309812A CN102324850A (en) | 2011-10-13 | 2011-10-13 | Chain link control power supply in chain static synchronous compensator |
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| CN102324850A true CN102324850A (en) | 2012-01-18 |
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| CN201110309812A Pending CN102324850A (en) | 2011-10-13 | 2011-10-13 | Chain link control power supply in chain static synchronous compensator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326393A (en) * | 2012-03-22 | 2013-09-25 | 张家港智电柔性输配电技术研究所有限公司 | Redundant power supply of H-bridge cascading converter |
| CN103532395A (en) * | 2013-11-05 | 2014-01-22 | 山东新风光电子科技发展有限公司 | Power supply circuit of power module of chain circuit SVG (static var generator) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899271Y (en) * | 2006-01-24 | 2007-05-09 | 刘文辉 | Power module controlling power supply of chain DC-to-AC converter |
| CN101304217A (en) * | 2008-07-02 | 2008-11-12 | 东南大学 | Switch power supply for chain type convertor power unit controller |
| CN101572489A (en) * | 2009-06-12 | 2009-11-04 | 清华大学 | Control power supply of chain type current converter in chain type static synchronous compensator |
| CN102005907A (en) * | 2010-10-29 | 2011-04-06 | 清华大学 | Working power supply of power module in modular multi-level converter |
| CN201956688U (en) * | 2010-12-31 | 2011-08-31 | 中电普瑞科技有限公司 | Movable static synchronous compensator with modular structure |
| CN202340189U (en) * | 2011-10-13 | 2012-07-18 | 江苏威凡智能电气科技有限公司 | Chain link control power supply in chain type static synchronous compensator |
-
2011
- 2011-10-13 CN CN201110309812A patent/CN102324850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899271Y (en) * | 2006-01-24 | 2007-05-09 | 刘文辉 | Power module controlling power supply of chain DC-to-AC converter |
| CN101304217A (en) * | 2008-07-02 | 2008-11-12 | 东南大学 | Switch power supply for chain type convertor power unit controller |
| CN101572489A (en) * | 2009-06-12 | 2009-11-04 | 清华大学 | Control power supply of chain type current converter in chain type static synchronous compensator |
| CN102005907A (en) * | 2010-10-29 | 2011-04-06 | 清华大学 | Working power supply of power module in modular multi-level converter |
| CN201956688U (en) * | 2010-12-31 | 2011-08-31 | 中电普瑞科技有限公司 | Movable static synchronous compensator with modular structure |
| CN202340189U (en) * | 2011-10-13 | 2012-07-18 | 江苏威凡智能电气科技有限公司 | Chain link control power supply in chain type static synchronous compensator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326393A (en) * | 2012-03-22 | 2013-09-25 | 张家港智电柔性输配电技术研究所有限公司 | Redundant power supply of H-bridge cascading converter |
| CN103326393B (en) * | 2012-03-22 | 2016-03-30 | 张家港智电柔性输配电技术研究所有限公司 | A kind of redundant power supply power supply of H bridge cascade converter |
| CN103532395A (en) * | 2013-11-05 | 2014-01-22 | 山东新风光电子科技发展有限公司 | Power supply circuit of power module of chain circuit SVG (static var generator) |
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Application publication date: 20120118 |