CN206340977U - A kind of protection system of the series compensation equipment set based on spark gap - Google Patents

A kind of protection system of the series compensation equipment set based on spark gap Download PDF

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Publication number
CN206340977U
CN206340977U CN201621423961.4U CN201621423961U CN206340977U CN 206340977 U CN206340977 U CN 206340977U CN 201621423961 U CN201621423961 U CN 201621423961U CN 206340977 U CN206340977 U CN 206340977U
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CN
China
Prior art keywords
spark gap
series
protection system
compensation equipment
set based
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Active
Application number
CN201621423961.4U
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Chinese (zh)
Inventor
黄如海
姜崇学
张宝顺
潘磊
鲁江
邱德锋
刘永刚
卢宇
董云龙
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NR Electric Co Ltd
NR Engineering Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
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Priority to CN201621423961.4U priority Critical patent/CN206340977U/en
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    • 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 utility model proposes a kind of protection system of the series compensation equipment set based on spark gap; spark gap and by-pass switch are connect in series transformer winding terminal span; after failure generation, before by-pass switch combined floodgate; when overvoltage occurs in series compensation equipment; spark gap reaches setting voltage operation; series transformer winding is bypassed, overvoltage protection is carried out to equipment.The spark gap and by-pass switch of the protection system are cooperated, and protection is coordinated to equipment overvoltage, are prevented that overvoltage stress from continuing to develop, are improved the overall reliability of equipment.

Description

A kind of protection system of the series compensation equipment set based on spark gap
Technical field
The utility model belongs to electric and electronic technical field in power system, and in particular to one kind is set based on spark gap Series compensation equipment protection system.
Background technology
STATCOM uses voltage source converter, main electric power electronic component therein, electric capacity 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 It may all cause equipment to be in charged state, capacitance voltage constantly rises, ultimately cause the blast of device overvoltage.To protect other Partly, blast is prevented, the influence to whole valve group and system is reduced, it is necessary in time failure removal.Mechanical bypass switch it is dynamic The regular hour is needed, charging current may cause voltage further to raise 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, such as switching overvoltage, lightning surge typically can not be only Protected by protection system, it is necessary to by rational pressure-resistant design, such as configure spark gap and prevented.But spark gap Actuation time it is relatively short, accordingly, it would be desirable to for protection system and the advantage and disadvantage of spark gap, formulating a kind of more quickly has The protection system of effect, can prevent that overvoltage stress from continuing to send out in system disturbance, module failure or alternating current-direct current power network overvoltage Exhibition, improves the reliability of transverter.
Utility model content
The purpose of this utility model, is to provide a kind of protection system of the series compensation equipment set based on spark gap System, ensure that equipment, in system disturbance, module failure or alternating current-direct current power network overvoltage, can be acted reliably, protection is set It is standby not received voltage stress and damaged.
In order to achieve the above object, solution of the present utility model is:
A kind of protection system of the series compensation equipment set based on spark gap, the protection system of the series compensation equipment System includes series transformer, by-pass switch and spark gap,
The spark gap and by-pass switch of bridging are configured at series transformer valve side winding two ends, both are in parallel;
Spark gap and by-pass switch coordinate, and protect the safety of series compensation equipment.
As further preferred scheme of the present utility model, when the series transformer valve side winding two ends of the configuration are bridged The level of protection of spark gap when can not protect series compensation equipment, configuration is connected across series transformer line side winding two The spark gap at end.
As further preferred scheme of the present utility model, configure and bridge at the series transformer line side winding two ends By-pass switch.
As further preferred scheme of the present utility model, the other sides of series transformer use star-star connection mode, Or use delta connection mode.
As further preferred scheme of the present utility model, the other side windings of series transformer use star-star connection During mode, the series transformer increase balance winding.
As further preferred scheme of the present utility model, the other side windings of series transformer use star-star connection side During formula, neutral-point solid ground or resistance grounded.
As further preferred scheme of the present utility model, the series transformer include balance winding when, balance around Group two ends do not configure the spark gap of bridging.
As further preferred scheme of the present utility model, wherein one end of the series transformer balance winding directly connects Ground.
As further preferred scheme of the present utility model, at least one end of the balance winding of the series transformer is through fire Flower gap ground.
The beneficial effects of the utility model, are to provide a kind of protection of the series compensation equipment set based on spark gap System, ensure that equipment, in system disturbance, module failure or alternating current-direct current power network overvoltage, can be acted reliably, protection Equipment has not received voltage stress and damaged, the reliability overall so as to improve equipment, is suitable for engineer applied.
Brief description of the drawings
Fig. 1 is that (series transformer low-pressure side is added using star connection for the protection system of the utility model series compensation equipment Balance the mode of connection of winding) structure chart;
Fig. 2 is that (series transformer low-pressure side is added using star connection for the protection system of the utility model series compensation equipment Balance the mode of connection of winding) structure chart, line side winding two ends configuration bridging spark gap;
Fig. 3 is that (series transformer low-pressure side is added using star connection for the protection system of the utility model series compensation equipment Balance the mode of connection of winding) structure chart, line side winding two ends configuration by-pass switch;
Fig. 4 is that (series transformer low-pressure side is connect using triangle for the protection system of the utility model series compensation equipment Line mode) structure chart;
Fig. 5 is balance winding connection mode figure, has one end to be directly grounded;
Fig. 6 is balance winding connection mode figure, and at least one end is grounded through spark gap;
Fig. 7 is delta connection mode figure.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
The utility model proposes a kind of protection system of the series compensation equipment set based on spark gap, such as Fig. 1 institutes Show, the protection system of the series compensation equipment is including but not limited to series transformer, by-pass switch and spark gap, in series connection The spark gap and by-pass switch of transformer valve side winding two ends configuration bridging, both are in parallel;Spark gap and by-pass switch are matched somebody with somebody Close, protect the safety of series compensation equipment.
When the level of protection for the spark gap that the series transformer valve side winding two ends of the configuration are bridged can protect string During connection compensation equipment, the spark gap installed in series transformer line side winding two ends can not be configured, as shown in Figure 1.
When the level of protection for the spark gap that the series transformer valve side winding two ends of the configuration are bridged can not be protected During series compensation equipment, configuration is connected across the spark gap at series transformer line side winding two ends, as shown in Figure 2.
The by-pass switch of bridging can also be configured at the series transformer line side winding two ends, protection is further improved The reliability of system, if as shown in figure 3, simultaneously configuration installed in series transformer line side winding two ends spark gap, Then by-pass switch is in parallel with the spark gap installed in series transformer line side winding two ends.
The other sides of series transformer can use star-star connection mode, it would however also be possible to employ delta connection mode, such as scheme 4th, shown in Fig. 7.
When the other side windings of series transformer use star-star connection mode, series transformer increase balance around Group, as shown in Figure 5.
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 5.
When the series transformer includes balance winding, balance winding two ends do not configure the spark gap of bridging.
Wherein one end of the series transformer balance winding is directly grounded.As shown in Figure 5.
At least one end of the balance winding of the series transformer is grounded through spark gap, further improves protection system Reliability, as shown in Figure 6.
Finally it should be noted that:Only illustrate the technical solution of the utility model with reference to above-described embodiment rather than it is limited System.Those of ordinary skill in the art are to be understood that:Those skilled in the art can be to specific implementation of the present utility model Mode is modified or equivalent, but these modifications or change are being applied within pending patent requirements protection domain..

Claims (9)

1. a kind of protection system of the series compensation equipment set based on spark gap, it is characterised in that:The series compensation is set Standby protection system includes series transformer, by-pass switch and spark gap,
The spark gap and by-pass switch of bridging are configured at series transformer valve side winding two ends, both are in parallel;
Spark gap and by-pass switch coordinate, and protect the safety of series compensation equipment.
2. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 1, its feature is existed In when the level of protection for the spark gap that the series transformer valve side winding two ends of the configuration are bridged can not protect series connection to mend When repaying equipment, configuration is connected across the spark gap at series transformer line side winding two ends.
3. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 1, its feature is existed In in the by-pass switch of series transformer line side winding two ends configuration bridging.
4. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 1, its feature is existed In the other sides of series transformer use star-star connection mode, or use delta connection mode.
5. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 4, its feature is existed In, when the other side windings of series transformer use star-star connection mode, the series transformer increase balance winding.
6. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 4, its feature is existed In, when the other side windings of series transformer use star-star connection mode, neutral-point solid ground or resistance grounded.
7. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 5, its feature is existed In when the series transformer includes balance winding, balance winding two ends do not configure the spark gap of bridging.
8. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 5, its feature is existed In wherein one end of the series transformer balance winding is directly grounded.
9. a kind of protection system of series compensation equipment set based on spark gap as claimed in claim 5, its feature is existed In at least one end of the balance winding of the series transformer is grounded through spark gap.
CN201621423961.4U 2016-12-22 2016-12-22 A kind of protection system of the series compensation equipment set based on spark gap Active CN206340977U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621423961.4U CN206340977U (en) 2016-12-22 2016-12-22 A kind of protection system of the series compensation equipment set based on spark gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621423961.4U CN206340977U (en) 2016-12-22 2016-12-22 A kind of protection system of the series compensation equipment set based on spark gap

Publications (1)

Publication Number Publication Date
CN206340977U true CN206340977U (en) 2017-07-18

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CN201621423961.4U Active CN206340977U (en) 2016-12-22 2016-12-22 A kind of protection system of the series compensation equipment set based on spark gap

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108233390A (en) * 2016-12-22 2018-06-29 南京南瑞继保电气有限公司 A kind of protection system of the series compensation equipment based on spark gap setting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108233390A (en) * 2016-12-22 2018-06-29 南京南瑞继保电气有限公司 A kind of protection system of the series compensation equipment based on spark gap setting

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