CN206340970U - A kind of series compensation equipment protection system of parallel-connection structure - Google Patents
A kind of series compensation equipment protection system of parallel-connection structure Download PDFInfo
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- CN206340970U CN206340970U CN201621425023.8U CN201621425023U CN206340970U CN 206340970 U CN206340970 U CN 206340970U CN 201621425023 U CN201621425023 U CN 201621425023U CN 206340970 U CN206340970 U CN 206340970U
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- series
- protection system
- compensation equipment
- parallel
- transformer
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- 238000004804 winding Methods 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
Abstract
The utility model proposes a kind of series compensation equipment protection system of parallel-connection structure; 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 that definite value is acted; 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
Technical field
The utility model belongs to electric and electronic technical field in power system, and in particular to a kind of series connection of parallel-connection structure is mended
Repay 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 the series compensation equipment protection system for providing a kind of parallel-connection structure, ensure that
Equipment can be acted reliably, protection equipment is not by overvoltage in system disturbance, module failure or alternating current-direct current power network overvoltage
Stress and damage.
In order to achieve the above object, solution of the present utility model is：
A kind of series compensation equipment protection system of parallel-connection structure, the protection system of the series compensation equipment includes series connection
Transformer, by-pass switch and spark gap,
The spark gap and by-pass switch of bridging are configured at series transformer line 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 configuration series transformer line side winding two ends across
When the level of protection of the spark gap connect can not protect series compensation equipment, configuration is connected across the other side windings of series transformer
The spark gap at two ends.
As further preferred scheme of the present utility model, in the other side winding two ends configuration bridgings of the series transformer
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 the series compensation equipment protection system for providing a kind of parallel-connection structure, can
Ensure that equipment, in system disturbance, module failure or alternating current-direct current power network overvoltage, can be acted reliably, protection equipment has not been received
Voltage stress and damage, 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, other side winding two ends configure 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, other side winding two ends configure 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 series compensation equipment protection system of parallel-connection structure, as shown in figure 1, the series connection
The protection system of equipment is compensated including but not limited to series transformer, by-pass switch and spark gap, in series transformer circuit
The spark gap and by-pass switch of side winding two ends configuration bridging, both are in parallel；Spark gap and by-pass switch coordinate, protection string
The safety of connection compensation equipment.
When the level of protection for the spark gap that the series transformer line side winding two ends of the configuration are bridged can be protected
During series compensation equipment, the spark gap installed in the other side winding two ends of series transformer can not be configured, as shown in Figure 1.
When the level of protection for the spark gap that the series transformer line side winding two ends of the configuration are bridged can not be protected
When protecting series compensation equipment, configuration is connected across the spark gap at the other side winding two ends of series transformer, as shown in Figure 2.
The by-pass switch that can also be bridged in the other side winding two ends configurations of the series transformer, if configuration peace simultaneously
Spark gap mounted in the other side winding two ends of series transformer, then by-pass switch is with being arranged on the other side windings of series transformer
The spark gap at two ends is in parallel, further improves the reliability of protection system, as shown in Figure 3.
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 series compensation equipment protection system of parallel-connection structure, it is characterised in that：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 line side winding two ends, both are in parallel；
Spark gap and by-pass switch coordinate, and protect the safety of series compensation equipment.
2. the series compensation equipment protection system of a kind of parallel-connection structure as claimed in claim 1, it is characterised in that match somebody with somebody when described
When the level of protection of the spark gap for the series transformer line side winding two ends bridging put can not protect series compensation equipment,
Configuration is connected across the spark gap at the other side winding two ends of series transformer.
3. the series compensation equipment protection system of a kind of parallel-connection structure as claimed in claim 1, it is characterised in that in the string
Join the by-pass switch of the other side winding two ends configuration bridgings of transformer.
4. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 1, it is characterised in that the series connection
The other sides of transformer use star-star connection mode, or use delta connection mode.
5. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 4, it is characterised in that the series connection
When the other side windings of transformer use star-star connection mode, the series transformer increase balance winding.
6. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 4, it is characterised in that the series connection
When the other side windings of transformer use star-star connection mode, neutral-point solid ground or resistance grounded.
7. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 5, it is characterised in that the series connection
When transformer includes balance winding, balance winding two ends do not configure the spark gap of bridging.
8. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 5, it is characterised in that the series connection
Wherein one end of transformer balance winding is directly grounded.
9. a kind of series compensation equipment protection system of parallel-connection structure as claimed in claim 5, it is characterised in that the series connection
At least one end of the balance winding of transformer is grounded through spark gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425023.8U CN206340970U (en) | 2016-12-22 | 2016-12-22 | A kind of series compensation equipment protection system of parallel-connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425023.8U CN206340970U (en) | 2016-12-22 | 2016-12-22 | A kind of series compensation equipment protection system of parallel-connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206340970U true CN206340970U (en) | 2017-07-18 |
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ID=59301585
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621425023.8U Active CN206340970U (en) | 2016-12-22 | 2016-12-22 | A kind of series compensation equipment protection system of parallel-connection structure |
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| Country | Link |
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| CN (1) | CN206340970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233354A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protection system of parallel-connection structure |
-
2016
- 2016-12-22 CN CN201621425023.8U patent/CN206340970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233354A (en) * | 2016-12-22 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of series compensation equipment protection system of parallel-connection structure |
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