CN101969203A - Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device - Google Patents
Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device Download PDFInfo
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- CN101969203A CN101969203A CN2010102875118A CN201010287511A CN101969203A CN 101969203 A CN101969203 A CN 101969203A CN 2010102875118 A CN2010102875118 A CN 2010102875118A CN 201010287511 A CN201010287511 A CN 201010287511A CN 101969203 A CN101969203 A CN 101969203A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 238000012546 transfer Methods 0.000 claims abstract description 33
- 230000011218 segmentation Effects 0.000 claims description 30
- 238000013016 damping Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 238000002955 isolation Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 20
- 230000008901 benefit Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 101500023488 Lithobates catesbeianus GnRH-associated peptide 1 Proteins 0.000 description 2
- 101500022510 Lithobates catesbeianus GnRH-associated peptide 2 Proteins 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process 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
- Y02E40/30—Reactive power compensation
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Abstract
The invention provides a three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device. In the invention, the current transfer is realized during series compensation switching by the series combination of a newly added bypass breaker and two conventional bypass breakers, and the requirement on the current transfer capacity of a bypass isolation switch is reduced greatly; moreover, the device has excellent error protection property, and solves the problem that the bypass isolation switch transfer current of the ultra/extra-high voltage subsection series capacitor compensation device exceeds the standard.
Description
Technical field
The invention belongs to the flexible ac transmission of electric power system field, relate to a kind of ultra-high/extra-high voltage segmentation compensator with series capaci tance of three bypass breakers series connection.Be specifically related to utilize three bypass breaker tandem compounds to come the transfer load electric current and realize anti-misoperation locking, solve the bypass isolating switch transfer current that in ultra-high/extra-high voltage segmentation series compensation device, the exists problem that exceeds standard.
Background technology
There are very big-difference in whole world primary energy and the distribution of electric load on the geographical position, and this difference is particularly outstanding China's performance.Along with economic development, imbalance between supply and demand between energy resource supply and electricity consumption is on the rise, at a distance, big capacity, trans-regional transmission of electricity can effectively alleviate imbalance between power supply and demand, become one of modern power systems most important characteristic, but also the ability to transmit electricity of electrical network had higher requirement simultaneously.
The series capacitor compensation technology of AC transmission system (being called for short string mends) is that power capacitor is series in the transmission line of alternation current, the part emotional resistance of compensation transmission line of alternation current, thus reach purposes such as increasing circuit transmission capacity, the raising stability of a system, the network loss that reduces, saving investment.In remote, large capacity transmission system, increase along with transmission distance, its conveying capacity is subjected to increasing restriction, and the string benefit is to address this problem, improve the ultra-high/extra-high voltage transmission line to send one of important means of electric energy power, have very huge economic, in the electric power system of countries in the world, received at present widely and used.
China has formed the extra-high voltage planar network architecture based on the 500kV transmission line, and the 750kV extra high voltage network is about to become the trunk rack of Northwest Grid.Extra high voltage network is being born heavy day by day transmission of electricity task, is bringing into play huge economic benefit, but along with the increase of transmission distance and transmission line capability, the conveying capacity and the maintenance level of supergrid are in urgent need to be improved.The UHV transmission technology is the cutting edge technology of world's electric power sciemtifec and technical sphere, UHV transmission can improve transmission capacity, increase economic transmission distance, also have clear superiority at aspects such as reducing transmission losses, the corridor occupation of land of saving circuit, saving construction investment, it is the strong electric network composition of trunk that following China will form with the extra-high voltage grid.The ultra-high/extra-high voltage electrical network of China is general greater than external ultra-high/extra-high voltage system on fed distance, and transmission capacity is also very considerable.Therefore, China needs to adopt compensator with series capaci tance when building the ultra-high/extra-high voltage transmission system, so that improve conveying capacity, give full play to the economic benefit of ultra-high/extra-high voltage system equipment investment.
Big capacity 500kV string is mended device, the 750kV string is mended device and extra-high voltage series compensation device, has characteristics such as rated current is big, electric pressure is high, capacity is big, and string is mended device and had certain particularity in design, and the form that the segmentation string is mended often is used.Move back the string added time in throwing, the transfer current ability of conventional bypass isolating switch can not meet the demands, and is necessary to take measures to address this problem in conjunction with the characteristics of segmentation string benefit.
Compensator with series capaci tance adopts bypass isolating switch and string to mend protection usually and drops into and withdraw from operation with the mode that bypass breaker cooperates; but for the bigger ultra-high/extra-high voltage compensator with series capaci tance of capacity; because it has characteristics such as rated current is big, the damping device inductance value is big, the transfer current ability of conventional bypass isolating switch can not meet the demands.It is a kind of that to have solved the exceed standard scheme of problem of transfer current be that the segmentation string of bypass isolating switch bypass breaker in parallel is mended the main circuit scheme, if but this scheme bypass breaker mistake in parallel with bypass isolating switch when string is mended the device operation close, can cause the directly discharge and the capacitor group, the isolating switch that cause damage even very serious consequence such as blast of capacitor group.And the designed main circuit structure of the present invention does not exist because circuit breaker mistake is closed the directly danger of discharge of capacitor group that causes, and has both solved the transfer current problem that exceeds standard, and possesses extremely strong anti-error function simultaneously again.
Do not see the ultra-high/extra-high voltage segmentation compensator with series capaci tance of proposing three bypass breaker series connection the same as or similar to the present invention both at home and abroad.
Summary of the invention
The present invention is directed to the segmentation string and mend apparatus features, a kind of novel ultra-high/extra-high voltage segmentation compensator with series capaci tance structure is proposed, carry out tandem compound by newly-increased a bypass breaker and existing two bypass breakers, realized the current transfer function the when throwing of string benefit is moved back, greatly reduce requirement to bypass isolating switch transfer current ability, and have excellent anti-error characteristic, solved the bypass isolating switch transfer current that in ultra-high/extra-high voltage segmentation compensator with series capaci tance, the exists problem that exceeds standard.
The present invention proposes a kind of ultra-high/extra-high voltage segmentation compensator with series capaci tance of three bypass breakers series connection, every section compensator with series capaci tance comprises series capacitor bank, metal oxide pressure-limiting device, spark gap, damping device and bypass breaker, wherein series capacitor bank and metal oxide pressure-limiting device parallel connection connected with damping device after spark gap and the bypass breaker parallel connection; Bypass isolating switch, platform isolating switch and the 3rd bypass breaker that is used to drop into and withdraw from compensator with series capaci tance are shared device, two sections series capacitor bank in this segmentation compensator with series capaci tance directly link to each other by lead, two direct tandem compounds of bypass breaker that the 3rd bypass breaker and segmentation string are mended do not change the connected mode that original segmentation string is mended other equipment; The 3rd bypass breaker is connected between two bypass breakers that the segmentation string mends, and constitutes the current transfer branch road that is composed in series by three bypass breakers, realized segmentation series compensation device input and the current transfer function when withdrawing from.
Current transfer function is wherein realized by three bypass breaker tandem compounds.
Wherein, when dropping into compensator with series capaci tance, line current is transferred to the current transfer branch road that is made of three circuit breaker series connection from the bypass isolating switch branch road earlier, and then transfers to the series capacitor bank branch road; When withdrawing from compensator with series capaci tance, line current is transferred to the current transfer branch road that is made of three circuit breaker series connection from the series capacitor bank branch road earlier, and then transfers to the bypass isolating switch branch road.
Wherein, the 3rd bypass breaker that is used to drop into and withdraw from compensator with series capaci tance only closes position and two sections compensator with series capaci tance and all just do not allow to carry out closing operation during the protection action when other two bypass breakers all are in, otherwise the combined floodgate order of the 3rd bypass breaker will not be carried out.
Wherein, platform isolating switch and/or bypass isolating switch can have earthed switch.
The advantage of technical solution of the present invention is:
1. the designed main circuit structure of the present invention is simply novel, only by having increased a bypass breaker with regard to having solved the bypass isolating switch transfer current problem that exceeds standard, has very strong practicality.
2. it is in proper order simply clear that string benefit device throwing proposed by the invention is moved back, and meets the conventional operation operating habit.
3. scheme number of devices proposed by the invention is few, floor space is little, does not have problems such as running wastage increase, noise and heating, and whole cost is low.
4. main circuit structure proposed by the invention has extremely strong anti-error function, even there is not accident risk in two circuit breaker malfunctions simultaneously yet.
5. scheme proposed by the invention possesses electric anti mis-closedown function, has further strengthened device property safe and reliable to operation.
Description of drawings
In order to make content of the present invention by clearer understanding, and be convenient to the description of embodiment, it is as follows to provide description of drawings related to the present invention below:
Fig. 1 is that the segmentation string of three bypass breaker series connection is mended the main circuit structure schematic diagram.
Fig. 2 is that sequential schematic is moved back in the segmentation string benefit throwing of three bypass breaker series connection.
Fig. 3 is that the segmentation string of bypass isolating switch bypass breaker in parallel is mended the main circuit structure schematic diagram.
Fig. 4 is two fashionable current circuit schematic diagrames of bypass breaker mistake.
Fig. 5 is anti-error electric blocking logic diagram.
Embodiment
The segmentation string that Figure 1 shows that three bypass breaker series connection is mended the main circuit structure schematic diagram, for convenience of explanation, among the figure isolating switch with earthed switch do not draw, C1, MOV1, GAP1, D1, CB1 have constituted string and have mended 1 section, C2, MOV2, GAP2, D2, CB2 have constituted string and have mended 2 sections.Wherein,
Line: string is mended device place circuit;
G1: bypass isolating switch;
G2, G3: platform isolating switch;
C1, C2: series capacitor bank;
MOV1, MOV2: metal oxide pressure-limiting device is respectively applied for protection C1, C2;
GAP1, GAP2: spark gap is respectively applied for protection C1, MOV1 and C2, MOV2;
CB1, CB2: bypass breaker is respectively applied for when needing C1, C2 bypass or drops into again;
D1, D2: damping device;
CB3: bypass breaker is used for forming the current transfer branch road jointly with CB1, CB2.
Conventional segmentation string is mended the input of device and is withdrawed from operation and cooperates realization by CB1, CB2 and G1, and this just requires the transfer current ability of G1 to mend the device rated current greater than string, and the fracture voltage that G1 allows is greater than the voltage at damping device two ends.But mend device, 750kV string benefit device and extra-high voltage series compensation device for jumbo 500kV string, because string is mended the device rated current and the damping device inductance value is all very big, the damping device both end voltage is also very big, Capability Requirement to G1 transfer current and fracture voltage has surpassed the requirement of national standard for conventional isolating switch, the mode that only adopts CB1, CB2 and G1 to cooperate can not realize that the throwing of string being mended device moves back operation, serious equipment breakdown such as operate that by force G1 will cause that switch burns.The ultra-high/extra-high voltage segmentation compensator with series capaci tance structure that the present invention proposes, utilized bypass breaker can shift the very high characteristic of big electric current, fracture voltage, newly-increased CB3 and CB1, CB2 are carried out tandem compound, both realized the current transfer function the when throwing of string benefit device is moved back, possess extremely strong anti mis-closedown function again, greatly reduce requirement G1 transfer current ability.
Fig. 2 has provided the segmentation string benefit throwing of three bypass breaker series connection and has moved back sequential schematic, the circulation path of line current when I1～I4 has represented the different operating step respectively.Wherein, I1 represents the line current G1 that flows through, and I2 represents line current flow through G2, C1, C2, G3, and I3 represents line current flow through G2, CB1, D1, D2, CB2, G3, and I4 represents line current flow through G2, CB1, CB3, CB2, G3.
The operating procedure that string benefit device puts into operation is as follows:
String is mended and is initially in exit status, and promptly G1 closes the position, and G2, G3 divide the position, and CB1, CB2 close the position, and CB3 closes the position, and line current stream circulation path is I1;
Close G2, G3 earlier, divide G1 again, line current is transferred to I4 from circulation path I1;
Divide CB3, line current is transferred to I3 from circulation path I4;
Divide CB1, CB2, line current is transferred to I2 from circulation path I3, and string is mended device and finished the input operation.
The benefit device operating procedure out of service of going here and there is as follows:
String is mended the input state that is initially in, and promptly G1 divides the position, and G2, G3 close the position, and CB1, CB2 divide the position, and CB3 divides the position, and the line current circulation path is I2;
Close CB1, CB2, line current is transferred to I3 from circulation path I2;
Close CB3 after time-delay, line current is transferred to I4 from circulation path I3;
Close G1 earlier, divide G2, G3 again, line current is transferred to I1 from circulation path I4, and string benefit device is finished and withdrawed from operation.
The designed main circuit structure of the present invention does not exist because separate unit bypass breaker (CB1, CB2 or CB3) mistake is closed and causes the directly danger of discharge of capacitor group, installs safe and reliable to operation.As can be seen from Figure 1, if CB1 or CB2 mistake are closed, the capacitor group will can not cause capacitor group direct short-circuit discharge through damping device discharge separately when string is mended the device operation, and the CB3 mistake is closed also and can not formed the capacitor set discharge loop.Mending the main circuit scheme with the segmentation string of bypass isolating switch shown in Figure 3 bypass breaker in parallel compares, though this scheme has also solved the transfer current problem, if but the CB3 mistake is closed when string is mended the device operation, the capacitor group will directly be discharged through the I5 loop that is made of G3, CB3 and G2, may cause very serious consequences such as capacitor group, isolating switch damage even blast.
The designed main circuit structure of the present invention does not exist owing to any two circuit breakers among CB1, CB2 and the CB3 close with mistiming and causes the directly danger of discharge of capacitor group, and the probability that three bypass breakers close with mistiming is not considered in engineering is used, so this main circuit possesses extremely strong anti-error function.Fig. 4 has provided two fashionable current circuit schematic diagrames of bypass breaker mistake, if CB1 and CB2 close with mistiming, the capacitor group will can not cause capacitor group direct short-circuit discharge through damping device discharge separately.If CB1 and CB3 close with mistiming, C1 will have the damping discharge through I6 loop (D1 that flows through, CB1) and I7 loop (D2 that flows through, CB3, CB1), and C2 continues operate as normal, and the accident of capacitor group direct short-circuit discharge can not take place.Above-mentioned analysis conclusion is applicable to that also following operating mode: CB2 and CB3 close, go here and there when mending the action of 1 segment protect CB3 with mistiming and mistake takes place close, go here and there when mending the action of 2 segment protects CB3 and mistake takes place close.
Scheme proposed by the invention possesses electric anti mis-closedown function; in the anti-error electric blocking logic diagram shown in Figure 5, HK3 represents the combined floodgate order of CB3, and HJ3 is the closing relay of CB3; HW1, HW2 are the node that closes of CB1, CB2, and BH1, BH2 represent that string is mended 1 section, benefit 2 segment protects of going here and there move.CB3 only closes position and string and mends 1 section and string and mend 2 sections and all just allow to carry out closing operation during the protection action when CB1 and CB2 all are in, otherwise the combined floodgate order of CB3 will not carry out, and has further strengthened the device operational reliability.
Above by special embodiment content description the present invention, but those skilled in the art also can recognize the multiple possibility of modification and optional embodiment, for example, by combination and/or change the feature of single embodiment.Therefore, be understandable that these modification and optional embodiment will be considered as included among the present invention, only enclosed invention claims of scope of the present invention and coordinate restriction thereof.
Claims (5)
1. the ultra-high/extra-high voltage segmentation compensator with series capaci tance of three bypass breakers series connection, every section compensator with series capaci tance comprises series capacitor bank, metal oxide pressure-limiting device, spark gap, damping device and bypass breaker, wherein series capacitor bank and metal oxide pressure-limiting device parallel connection connected with damping device after spark gap and the bypass breaker parallel connection; Bypass isolating switch, platform isolating switch and the 3rd bypass breaker that is used to drop into and withdraw from compensator with series capaci tance are shared device, it is characterized in that: two sections series capacitor bank in this segmentation compensator with series capaci tance directly link to each other by lead, two direct tandem compounds of bypass breaker that the 3rd bypass breaker and segmentation string are mended do not change the connected mode that original segmentation string is mended other equipment; The 3rd bypass breaker is connected between two bypass breakers that the segmentation string mends, and constitutes the current transfer branch road that is composed in series by three bypass breakers, realized segmentation series compensation device input and the current transfer function when withdrawing from.
2. device as claimed in claim 1 is characterized in that: current transfer function is wherein realized by three bypass breaker tandem compounds.
3. device as claimed in claim 2 is characterized in that: when dropping into compensator with series capaci tance, line current is transferred to the current transfer branch road that is made of three circuit breaker series connection from the bypass isolating switch branch road earlier, and then transfers to the series capacitor bank branch road; When withdrawing from compensator with series capaci tance, line current is transferred to the current transfer branch road that is made of three circuit breaker series connection from the series capacitor bank branch road earlier, and then transfers to the bypass isolating switch branch road.
4. device as claimed in claim 3; it is characterized in that: the 3rd bypass breaker that is used to drop into and withdraw from compensator with series capaci tance only closes position and two sections compensator with series capaci tance and all just do not allow to carry out closing operation during the protection action when other two bypass breakers all are in, otherwise the combined floodgate order of the 3rd bypass breaker will not be carried out.
5. device as claimed in claim 4 is characterized in that: platform isolating switch and/or bypass isolating switch can have earthed switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010287511 CN101969203B (en) | 2010-09-20 | 2010-09-20 | Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device |
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|---|---|---|---|
| CN 201010287511 CN101969203B (en) | 2010-09-20 | 2010-09-20 | Three-bypass-breaker serial ultra/extra-high voltage subsection series capacitor compensation device |
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| CN101969203A true CN101969203A (en) | 2011-02-09 |
| CN101969203B CN101969203B (en) | 2013-12-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545836A (en) * | 2013-10-22 | 2014-01-29 | 国家电网公司 | Capacitor commutated converter inverter side system |
| CN104659769A (en) * | 2013-11-21 | 2015-05-27 | 中国电力科学研究院 | Ultra-high-voltage series compensation device |
| CN106099881A (en) * | 2016-06-12 | 2016-11-09 | 国网上海市电力公司 | For the lossless damping circuit of power distribution network serial connection capacitor compensating device |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
| CN107846009A (en) * | 2016-09-18 | 2018-03-27 | 国网江苏省电力公司经济技术研究院 | A kind of termination |
| CN108092231A (en) * | 2017-12-05 | 2018-05-29 | 中国电力科学研究院有限公司 | The determination methods and device of line side earthing switch operating condition in series compensation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3315181B2 (en) * | 1993-03-04 | 2002-08-19 | 株式会社日立製作所 | Series compensator |
| CN201528201U (en) * | 2009-10-28 | 2010-07-14 | 中国电力工程顾问集团东北电力设计院 | Submersible series capacitor compensation device |
-
2010
- 2010-09-20 CN CN 201010287511 patent/CN101969203B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3315181B2 (en) * | 1993-03-04 | 2002-08-19 | 株式会社日立製作所 | Series compensator |
| CN201528201U (en) * | 2009-10-28 | 2010-07-14 | 中国电力工程顾问集团东北电力设计院 | Submersible series capacitor compensation device |
Non-Patent Citations (1)
| Title |
|---|
| 樊玥等: "串联补偿装置电气设计与实现", 《高电压技术》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545836A (en) * | 2013-10-22 | 2014-01-29 | 国家电网公司 | Capacitor commutated converter inverter side system |
| CN103545836B (en) * | 2013-10-22 | 2016-05-25 | 国家电网公司 | A kind of electric capacity commutation transverter inversion side system |
| CN104659769A (en) * | 2013-11-21 | 2015-05-27 | 中国电力科学研究院 | Ultra-high-voltage series compensation device |
| CN106099881A (en) * | 2016-06-12 | 2016-11-09 | 国网上海市电力公司 | For the lossless damping circuit of power distribution network serial connection capacitor compensating device |
| CN107846009A (en) * | 2016-09-18 | 2018-03-27 | 国网江苏省电力公司经济技术研究院 | A kind of termination |
| CN107846009B (en) * | 2016-09-18 | 2023-08-29 | 国网江苏省电力公司经济技术研究院 | Wiring device |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
| CN108092231A (en) * | 2017-12-05 | 2018-05-29 | 中国电力科学研究院有限公司 | The determination methods and device of line side earthing switch operating condition in series compensation device |
| CN108092231B (en) * | 2017-12-05 | 2022-10-25 | 中国电力科学研究院有限公司 | Method and device for judging operating conditions of line side grounding switch in series compensation device |
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