CN108233389A - A kind of protection system of series compensation equipment - Google Patents

A kind of protection system of series compensation equipment Download PDF

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Publication number
CN108233389A
CN108233389A CN201611199673.XA CN201611199673A CN108233389A CN 108233389 A CN108233389 A CN 108233389A CN 201611199673 A CN201611199673 A CN 201611199673A CN 108233389 A CN108233389 A CN 108233389A
Authority
CN
China
Prior art keywords
arrester
series
protection system
compensation equipment
series transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611199673.XA
Other languages
Chinese (zh)
Inventor
姜崇学
张宝顺
潘磊
鲁江
黄如海
邱德锋
刘永刚
卢宇
董云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NR Electric Co Ltd
NR Engineering Co Ltd
Original Assignee
NR Electric Co Ltd
NR Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NR Electric Co Ltd, NR Engineering Co Ltd filed Critical NR Electric Co Ltd
Priority to CN201611199673.XA priority Critical patent/CN108233389A/en
Publication of CN108233389A publication Critical patent/CN108233389A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1807Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

Abstract

The present invention proposes a kind of protection system of series compensation equipment; arrester and by-pass switch are bridged between series transformer winding terminal; after failure generation, before by-pass switch combined floodgate; when overvoltage occurs in series compensation equipment, arrester reaches definite value action; series transformer winding is bypassed, overvoltage protection is carried out to equipment;Earth arrester is configured in series transformer winding terminal, prevents Lightning Over-voltage and switching overvoltage from being damaged to equipment.The arrester and by-pass switch of the protection system cooperate, and carry out harmonious protection to equipment overvoltage, prevent overvoltage stress from continuing to develop, improve the reliability of equipment entirety.

Description

A kind of protection system of series compensation equipment
Technical field
The invention belongs to power electronics fields in electric system, and in particular to a kind of protection system of series compensation equipment System.
Background technology
Static synchronous compensator uses voltage source converter, main electric power electronic component therein, capacitance relative to The equipment such as transformer, reactor, circuit are to overvoltage quite sensitive.
For the engineering of actual motion, overvoltage is the significant threat of converter valve, the device of valve group, capacitance overvoltage ability It is limited.The overvoltage of Microsecond grade this may result in the damage of device.For power electronic devices, control circuit or internal fault Equipment may all be caused to be in charged state, capacitance voltage constantly rises, and ultimately causes the explosion of device overvoltage.To protect other Partly, it prevents from exploding, reduces the influence to entire valve group and system, need in time failure removal.Mechanical bypass switch moves The regular hour is needed, charging current may cause voltage further to increase within this time, it is therefore desirable to equipment in addition Quickly cut off failure.
The alternating current-direct current power network overvoltage that time is extremely short, amplitude is high, generally can not be only such as switching overvoltage, lightning surge It is protected by protection system, needs to design by rational pressure resistance, such as configuration arrester is prevented.But arrester is dynamic Make that the time is relatively short, action for a long time can cause the damage of arrester.
Therefore, it is necessary to be directed to the advantage and disadvantage of protection system and arrester, formulate one kind and more quickly and effectively protect system, It can prevent overvoltage stress from continuing to develop in system disturbance, module failure or alternating current-direct current power network overvoltage, improve transverter Reliability.
Invention content
The purpose of the present invention is to provide a kind of protection system of series compensation equipment, can ensure that equipment is disturbed in system When dynamic, module failure or alternating current-direct current power network overvoltage, it can reliably act, equipment is protected not receive voltage stress and damaged.
In order to achieve the above object, solution of the invention is:
A kind of protection system of series compensation equipment, including series transformer, by-pass switch and arrester, the arrester Including earth arrester and bridging arrester;
Earth arrester is configured in the nearly busbar end of series transformer line side winding and near line terminal;When series compensation is set When the distance of standby offline road and the original arrester of busbar is less than the threshold value of setting, the nearly mother of series transformer line side winding Earth arrester is not configured in line end and near line terminal;
In the arrester and by-pass switch of the configuration bridging of series transformer line side winding both ends, the two is in parallel, is connecting The arrester of the other side winding both ends configuration bridgings of transformer;
When the level of protection of the arrester of the series transformer line side winding both ends of configuration bridging can protect string During connection compensation equipment, the arrester for being connected across the other side winding both ends of series transformer is not configured;
When the level of protection of the arrester of the other side winding both ends bridgings of the series transformer of the configuration can protect string During connection compensation equipment, the arrester for being connected across series transformer line side winding both ends is not configured;
Arrester, earth arrester and by-pass switch cooperation are bridged, protects the safety of series compensation equipment.
As present invention further optimization scheme, on the side of the other side winding both ends configuration bridgings of the series transformer Way switch.
It is lightning-arrest in the other side winding side configuration ground connection of the series transformer as present invention further optimization scheme Device.
As present invention further optimization scheme, the other sides of series transformer using star-star connection mode or Using delta connection mode.
As present invention further optimization scheme, the other side windings of series transformer use star-star connection mode When, the series transformer increases balance winding.
As present invention further optimization scheme, the other side windings of series transformer use star-star connection mode When, neutral-point solid ground or resistance grounded.
As present invention further optimization scheme, when the series transformer includes balance winding, winding two is balanced The arrester of bridging is not configured for end.
As present invention further optimization scheme, wherein one end of the series transformer balance winding is directly grounded.
As present invention further optimization scheme, at least one end of the balance winding of the series transformer is through arrester Ground connection.
Beneficial effects of the present invention are to provide a kind of protection system of series compensation equipment, can ensure that equipment is being When system disturbance, module failure or alternating current-direct current power network overvoltage, it can reliably act, equipment is protected not receive voltage stress and damaged It is bad, so as to improve the reliability of equipment entirety, it is suitable for engineer application.
Description of the drawings
Fig. 1 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, line side winding both ends add earth arrester;
Fig. 2 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, line side winding both ends are not added with earth arrester;
Fig. 3 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, bridging arrester is not configured for other side winding both ends;
Fig. 4 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, bridging arrester is not configured for line side winding both ends;
Fig. 5 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, by-pass switch is configured in other side winding both ends;
Fig. 6 is that (series transformer low-pressure side adds balance using star connection for the protection system of series compensation equipment of the present invention The mode of connection of winding) structure chart, other side windings configuration earth arresters;
Fig. 7 be series compensation equipment of the present invention protection system (series transformer low-pressure side use triangle wiring side Formula) structure chart;
Fig. 8 is balance winding connection mode figure, has one end to be directly grounded;
Fig. 9 is balance winding connection mode figure, and at least one end is through arrester ground;
Figure 10 is delta connection mode figure.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
The present invention proposes a kind of protection system of series compensation equipment, as shown in Figure 1, the guarantor of the series compensation equipment Protecting system is including but not limited to series transformer, by-pass switch and arrester, the nearly busbar end of series transformer line side winding Earth arrester is configured near line terminal, the arrester of configuration bridging and bypass are opened at series transformer line side winding both ends It closes, the two is in parallel;In the arrester of the other side winding both ends configuration bridgings of series transformer.Bridge arrester, earth arrester Coordinate with by-pass switch, protect the safety of series compensation equipment.
When the offline road of series compensation equipment and the closer original arrester of busbar, series transformer line side winding Nearly busbar end and near line terminal earth arrester is not configured, as shown in Figure 2.
When the level of protection of the arrester of the series transformer line side winding both ends of configuration bridging can protect string During connection compensation equipment, the arrester for being connected across the other side winding both ends of series transformer is not configured, as shown in Figure 3.
When the level of protection of the arrester of the other side winding both ends bridgings of the series transformer of the configuration can protect string During connection compensation equipment, the arrester for being connected across series transformer line side winding both ends is not configured, as shown in Figure 4.
The by-pass switch of bridging can be configured at the other side winding both ends of the series transformer, if there is bridging simultaneously Arrester, it is in parallel therewith, the reliability of protection system is further improved, as shown in Figure 5.
Can be in the series transformer other side winding sides configuration earth arresters, further improve protection system can By property, as shown in Figure 6.
Star-star connection mode can be used in the other sides of series transformer, can also use delta connection mode, such as scheme 7th, shown in Figure 10.
When the other side windings of series transformer use star-star connection mode, the series transformer increase balance around Group, as shown in Figure 8.
When the other side windings of series transformer use star-star connection mode, neutral point can be directly grounded or through resistance Ground connection, as shown in Figure 8.
When the series transformer includes balance winding, the arrester of bridging is not configured for balance winding both ends.
Wherein one end of the series transformer balance winding is directly grounded.As shown in Figure 8.
Through arrester ground, further improve protection system can at least one end of the balance winding of the series transformer By property, as shown in Figure 9.
Finally it should be noted that:Only illustrate technical scheme of the present invention rather than its limitations with reference to above-described embodiment.Institute The those of ordinary skill in category field is to be understood that:Those skilled in the art can repair the specific embodiment of the present invention Change or equivalent replacement, but these modifications or change are being applied within pending patent requirements protection domain.

Claims (9)

1. a kind of protection system of series compensation equipment, it is characterised in that:The protection system of the series compensation equipment includes string Join transformer, by-pass switch and arrester, the arrester includes earth arrester and bridging arrester;
Earth arrester is configured in the nearly busbar end of series transformer line side winding and near line terminal;When series compensation equipment from When the distance of circuit and the original arrester of busbar is less than the threshold value of setting, the nearly busbar end of series transformer line side winding Earth arrester is not configured near line terminal;
In the arrester and by-pass switch of the configuration bridging of series transformer line side winding both ends, the two is in parallel, in series-transformer The arrester of the other side winding both ends configuration bridgings of device;
When the level of protection of the arrester of the series transformer line side winding both ends of configuration bridging can protect series connection to mend When repaying equipment, the arrester for being connected across the other side winding both ends of series transformer is not configured;
When the level of protection of the arrester of the other side winding both ends bridgings of the series transformer of the configuration can protect series connection to mend When repaying equipment, the arrester for being connected across series transformer line side winding both ends is not configured;
Arrester, earth arrester and by-pass switch cooperation are bridged, protects the safety of series compensation equipment.
2. the protection system of a kind of series compensation equipment as described in claim 1, which is characterized in that in the series transformer The by-pass switch of other side winding both ends configuration bridgings.
3. the protection system of a kind of series compensation equipment as described in claim 1, which is characterized in that in the series transformer Earth arrester is configured in other side winding sides.
4. a kind of protection system of series compensation equipment as described in claim 1, which is characterized in that the series transformer its Its side is using star-star connection mode or uses delta connection mode.
5. a kind of protection system of series compensation equipment as claimed in claim 4, which is characterized in that the series transformer its When its side winding uses star-star connection mode, the series transformer increases balance winding.
6. a kind of protection system of series compensation equipment as claimed in claim 4, which is characterized in that the series transformer its When its side winding uses star-star connection mode, neutral-point solid ground or resistance grounded.
A kind of 7. protection system of series compensation equipment as claimed in claim 5, which is characterized in that the series transformer packet During containing balance winding, the arrester of bridging is not configured for balance winding both ends.
8. the protection system of a kind of series compensation equipment as claimed in claim 5, which is characterized in that the series transformer is put down Wherein one end of weighing apparatus winding is directly grounded.
9. the protection system of a kind of series compensation equipment as claimed in claim 5, which is characterized in that the series transformer At least one end of winding is balanced through arrester ground.
CN201611199673.XA 2016-12-22 2016-12-22 A kind of protection system of series compensation equipment Pending CN108233389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611199673.XA CN108233389A (en) 2016-12-22 2016-12-22 A kind of protection system of series compensation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611199673.XA CN108233389A (en) 2016-12-22 2016-12-22 A kind of protection system of series compensation equipment

Publications (1)

Publication Number Publication Date
CN108233389A true CN108233389A (en) 2018-06-29

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CN201611199673.XA Pending CN108233389A (en) 2016-12-22 2016-12-22 A kind of protection system of series compensation equipment

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109462225A (en) * 2018-09-21 2019-03-12 全球能源互联网研究院有限公司 A kind of Insulation Coordination method and system of tandem type compensation device
CN113014080A (en) * 2019-12-20 2021-06-22 南京南瑞继保电气有限公司 Converter overvoltage protection system of unified power flow controller and parameter design method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002247760A (en) * 2001-02-15 2002-08-30 Toshiba Corp Starting method of serial compensator
US20070250217A1 (en) * 2006-04-25 2007-10-25 Korea Electric Power Corporation System and method for automatically operating upfc (unified power flow controller) connected to scada (supervisory control and data acquisition)
US20140266145A1 (en) * 2013-03-15 2014-09-18 E. Energy Double Tree Limited Power flow control apparatus
CN104113060A (en) * 2014-07-23 2014-10-22 南京南瑞继保电气有限公司 Convertible static synchronous series compensator
CN105606934A (en) * 2016-01-14 2016-05-25 江苏省电力公司电力科学研究院 Charging starting debugging method for UPFC serial transformer
CN105652685A (en) * 2014-11-14 2016-06-08 国家电网公司 Function simulation device for dynamic simulation experiments
CN205595798U (en) * 2016-03-14 2016-09-21 全球能源互联网研究院 Modified compounding in parallel type unified power flow controller
CN106159976A (en) * 2016-08-16 2016-11-23 南京南瑞继保电气有限公司 A kind of series compensation device
CN206340976U (en) * 2016-12-22 2017-07-18 南京南瑞继保电气有限公司 A kind of protection system of series compensation equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002247760A (en) * 2001-02-15 2002-08-30 Toshiba Corp Starting method of serial compensator
US20070250217A1 (en) * 2006-04-25 2007-10-25 Korea Electric Power Corporation System and method for automatically operating upfc (unified power flow controller) connected to scada (supervisory control and data acquisition)
US20140266145A1 (en) * 2013-03-15 2014-09-18 E. Energy Double Tree Limited Power flow control apparatus
CN104113060A (en) * 2014-07-23 2014-10-22 南京南瑞继保电气有限公司 Convertible static synchronous series compensator
CN105652685A (en) * 2014-11-14 2016-06-08 国家电网公司 Function simulation device for dynamic simulation experiments
CN105606934A (en) * 2016-01-14 2016-05-25 江苏省电力公司电力科学研究院 Charging starting debugging method for UPFC serial transformer
CN205595798U (en) * 2016-03-14 2016-09-21 全球能源互联网研究院 Modified compounding in parallel type unified power flow controller
CN106159976A (en) * 2016-08-16 2016-11-23 南京南瑞继保电气有限公司 A kind of series compensation device
CN206340976U (en) * 2016-12-22 2017-07-18 南京南瑞继保电气有限公司 A kind of protection system of series compensation equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109462225A (en) * 2018-09-21 2019-03-12 全球能源互联网研究院有限公司 A kind of Insulation Coordination method and system of tandem type compensation device
CN109462225B (en) * 2018-09-21 2022-02-18 全球能源互联网研究院有限公司 Insulation matching method and system for series compensation device
CN113014080A (en) * 2019-12-20 2021-06-22 南京南瑞继保电气有限公司 Converter overvoltage protection system of unified power flow controller and parameter design method

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Application publication date: 20180629

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