CN109379066A - A kind of thyristor switch valve control system - Google Patents
A kind of thyristor switch valve control system Download PDFInfo
- Publication number
- CN109379066A CN109379066A CN201811104378.0A CN201811104378A CN109379066A CN 109379066 A CN109379066 A CN 109379066A CN 201811104378 A CN201811104378 A CN 201811104378A CN 109379066 A CN109379066 A CN 109379066A
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- CN
- China
- Prior art keywords
- thyristor
- control unit
- switch valve
- control system
- signal
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/08108—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit in thyristor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
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- Power Conversion In General (AREA)
Abstract
The present invention discloses a kind of thyristor switch valve control system; the thyristor switch is made of a pair of antiparallel thyristor cell; the valve control system includes the thyristor control unit and main control unit of optical fiber connection; the thyristor control unit realizes triggering and the status monitoring of thyristor; the main control unit receives the status monitoring signal of thyristor control unit transmission according to system protection demand transmission trigger command to thyristor control unit.Thyristor switch valve control system reliable operation disclosed by the invention, structure are simple, are particularly suitable for middle pressure without concatenated thyristor switch valve control system.
Description
Technical field
The invention belongs to power electronics and electric system application field, in particular to a kind of thyristor switch valve control system.
Background technique
With the maturation of power electronic technique and the needs of power system development, more and more power electronic equipments are
It is applied to electric system.Thyristor is a kind of current trigger type device, being capable of fast conducting and with powerful excessively electric
Stream ability, therefore it is commonly used for electronic switch.Speed is fast compares with mechanical chopper for thyristor switch conducting, the operation of thyristor
Service life is almost unlimited, and the switching moment of thyristor can accurately control, to reduce dash current and the behaviour when switching
Make overvoltage, is widely used in median and high voltage power system.
The triggering of valve group and status monitoring generally pass through thyristor control unit (Thyristor in thyristor switch
Control Unit, abbreviation TCU) it realizes, TCU receives trigger command and is converted into electric signal triggering thyristor, while monitoring crystalline substance
Brake tube state generates return signal.Patent 201010503109.9 proposes a kind of triggering for thyristor controlled series compensation and online
Monitoring system can provide disposable flash triggering for thyristor controlled series compensation, while monitor the state of every thyristor, but not
It is related to the control and protection of thyristor.Patent 201310196883.3 provides a kind of thyristor switchable capacitor valve group triggering system
System, solves the Trigger Problems of series thyristor valve group, but be not directed to the monitoring and control of thyristor.Patent
201420780753.4 proposing a kind of high potential self-powered IGBT group system, which is suitable for plural serial stage thyristor valve
Group needs to receive the trigger signal of master control system, resynchronisation by valve control unit (Valve Control Unit, abbreviation VCU)
Trigger command is sent to TCU；The return signal for receiving TCU and generating unified simultaneously, sends master control system after logical process, should
System is applicable for high voltage tandem thyristor valve group, but for many middle pressure applications, thyristor controlled series compensation is not required to go here and there
Connection, while requiring triggering system structure simple, compact, realize that the valve stool control mode of thyristor switch does not conform to using VCU unit at this time
It is appropriate to the occasion.
It has a meeting, an audience, etc. well under one's control in the thyristor electronic switch of conjunction, currently without more simple and reliable valve control system, thus this case produces
It is raw.
Summary of the invention
The purpose of the present invention is to provide a kind of thyristor switch valve control system, and reliable operation, structure is simple, especially
Suitable for middle pressure grade without concatenated thyristor switch valve control system.
In order to achieve the above technical purposes, the technical solution adopted by the present invention is that:
A kind of thyristor switch valve control system, for realizing that switching, the thyristor controlled series compensation include one to thyristor controlled series compensation
Thyristor cell, thyristor cell is by two antiparallel thyristor groups at the valve control system includes the brilliant lock of optical fiber connection
Pipe control unit and main control unit, main control unit receive the return signal IP that thyristor control unit is sent back to and control to thyristor
Unit sends trigger pulse FP.
In above scheme, the thyristor control unit realizes triggering and the status monitoring of thyristor.
In above scheme, an IGBT group includes triggered as normal and protectiveness triggering.
In above scheme, the triggered as normal is that main control unit receives when the voltage at thyristor both ends is added to certain value
The normal return signal that thyristor control unit is sent back to, and triggering arteries and veins is sent to thyristor control unit according to system protection demand
Rush FP.
In above scheme, the described protectiveness triggering be when thyristor can not triggered as normal conducting, thyristor both ends occur
Over-voltage, thyristor control unit can be triggered by protectiveness and force conducting thyristor at this time, and return to protectiveness triggering return letter
Number to main control unit.
In above scheme, the main control unit sends trigger signal to thyristor according to system protection action request and controls list
Member triggers thyristor, and real-time reception thyristor status monitoring signal monitoring thyristor state.
In above scheme, the thyristor state includes normal thyristor state, thyristor protection triggering and thyristor
Return dropout.
In above scheme, the thyristor state normally refers to that each power frequency period thyristor both end voltage is added to certain value
When thyristor control unit send back to normal return signal.
In above scheme, the thyristor return dropout refers to that continuous n power frequency period main control unit does not monitor
The normal return signal of thyristor control unit return, n are positive integer and are determined by concrete application.
In above scheme, the thyristor control unit includes logic control circuit, and respectively with logic control circuit
Connection sends and receivees circuit, gate trigger circuit and thyristor status monitoring circuit；The logic control circuit passes through
Gate trigger circuit generates trigger pulse triggers thyristor；The circuit that sends and receivees is used for transmission thyristor controlled series compensation triggering letter
Number, thyristor status signal；The thyristor status monitoring circuit is used to monitor the state of thyristor, and provides thyristor state
Signal is to logic control circuit；
The main control unit triggers thyristor according to system protection action request transmission trigger signal to thyristor control unit,
And real-time reception thyristor status monitoring signal, thyristor state is monitored, if monitoring thyristor abnormal state, after starting
Standby protection act.
The beneficial effects of the present invention are:
(1) the present invention provides a kind of thyristor switch valve control systems, and the triggering of thyristor is realized by thyristor control unit
Control and status monitoring, thyristor control unit can also be protected when overvoltage occurs in the non-triggered as normal of thyristor
Property triggering, protect thyristor.
(2) present invention directly connects thyristor control unit by optical fiber using main control unit, can be very good to realize brilliant
The electrical isolation of one electrical secondary system of brake tube.
Detailed description of the invention
Fig. 1 is a kind of thyristor switch valve control system structure chart provided in an embodiment of the present invention；
Fig. 2 is a kind of thyristor switch valve control system triggered as normal schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of benefit pulse-triggered schematic diagram provided in an embodiment of the present invention；
Fig. 4 is that a kind of triggered as normal IP provided in an embodiment of the present invention and protectiveness trigger IP detection schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out to the valve control system in the embodiment of the present invention clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, following
Embodiment is only used to illustrate the technical scheme of the present invention rather than is limited.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment
The embodiment of the invention provides a kind of thyristor switch valve control systems, including thyristor control unit and master control list
Member.The valve control system includes the thyristor control unit and main control unit of optical fiber connection, and main control unit receives thyristor control
The return signal IP and send trigger pulse FP to thyristor control unit TCU that unit is sent back to.The thyristor control unit is real
The triggering of existing thyristor and status monitoring.
One IGBT group includes triggered as normal and protectiveness triggering.
The triggered as normal is that main control unit receives thyristor control when the voltage at thyristor both ends is added to certain value
The normal return signal that unit is sent back to, and trigger pulse FP is sent to thyristor control unit according to system protection demand.
The described protectiveness triggering be when thyristor can not triggered as normal conducting, the over-voltage of thyristor both ends occurs, it is brilliant at this time
Thyristor control unit can be triggered by protectiveness and force conducting thyristor, and return to protectiveness triggering return signal to master control list
Member.
The main control unit sends trigger signal to thyristor control unit according to system protection action request, triggers brilliant lock
Pipe, and real-time reception thyristor status monitoring signal monitoring thyristor state.
The thyristor state includes that normal thyristor state, thyristor protection triggering and thyristor return signal are lost
It loses.
The thyristor state normally refers to thyristor control when each power frequency period thyristor both end voltage is added to certain value
Unit processed sends back to normal return signal.
The thyristor return dropout refers to that continuous n power frequency period main control unit does not monitor that thyristor control is single
The normal return signal of member return, n are positive integer and are determined by concrete application.
The thyristor control unit includes logic control circuit, and the reception that is connect respectively with logic control circuit and
Send circuit, gate trigger circuit and thyristor status monitoring circuit；The logic control circuit passes through gate trigger circuit
Generate trigger pulse triggers thyristor；The circuit that sends and receivees is used for transmission thyristor controlled series compensation trigger signal, thyristor shape
State signal；The thyristor status monitoring circuit is used to monitor the state of thyristor, and provides thyristor status signal to logic
Control circuit；
The main control unit triggers thyristor according to system protection action request transmission trigger signal to thyristor control unit,
And real-time reception thyristor status monitoring signal, thyristor state is monitored, if monitoring thyristor abnormal state, after starting
Standby protection act.
It is a kind of thyristor switch valve control system structure chart provided in an embodiment of the present invention as shown in Figure 1, main control unit connects
The return signal IP and send trigger pulse FP to TCU that TCU is sent back to are received, wherein when the voltage at thyristor both ends is added to 24V,
TCU can generate IP signal and show that thyristor has been prepared for finishing and can trigger.It is one kind provided in an embodiment of the present invention shown in Fig. 2
Thyristor switch valve control system triggered as normal schematic diagram.In addition when thyristor can not be connected for some reason, then will lead to
The thyristor both ends over-voltage being not turned on, TCU can be triggered by protectiveness and be forced conducting thyristor at this time, and return to IP signal.
It is a kind of benefit pulse-triggered schematic diagram provided in an embodiment of the present invention shown in Fig. 3
It can judge to be that normal thyristor prepares by the length of time of detection IP signal generation in the FPGA of main control unit
Ready signal or protectiveness trigger signal.
As soon as a time window PFDET is opened after FP generation, if detect that IP recognizes again in this time window
For be protectiveness triggering.It is that a kind of triggered as normal IP provided in an embodiment of the present invention shows with protectiveness triggering IP detection shown in Fig. 4
It is intended to.
The relevant failure of IP signal counts in main control unit application program to summarize, and is done according to running situation judgement
It reacts out.
When IP meets again in 20us, FP is reissued at the 20us moment, the #1 IP/FP in corresponding diagram 3；
When IP meets again after 20us, FP, the #2 in corresponding diagram 3,3 IP/FP are reissued at once.
Claims (10)
1. a kind of thyristor switch valve control system, for realizing that switching, the thyristor controlled series compensation include one to thyristor controlled series compensation
A thyristor cell, thyristor cell by two antiparallel thyristor groups at, which is characterized in that the valve control system includes light
The thyristor control unit and main control unit of fibre connection, main control unit receive the return signal IP that sends back to of thyristor control unit and
Trigger pulse FP is sent to thyristor control unit.
2. a kind of thyristor switch valve control system according to claim 1, which is characterized in that the thyristor control unit
Realize triggering and the status monitoring of thyristor.
3. a kind of thyristor switch valve control system according to claim 2, which is characterized in that an IGBT group
It is triggered including triggered as normal and protectiveness.
4. a kind of thyristor switch valve control system according to claim 3, which is characterized in that the triggered as normal is to work as
Main control unit receives the normal return signal that thyristor control unit is sent back to, and root when the voltage at thyristor both ends is added to certain value
Trigger pulse FP is sent to thyristor control unit according to system protection demand.
5. a kind of thyristor switch valve control system according to claim 3, which is characterized in that the protectiveness, which triggers, is
When thyristor can not triggered as normal conducting, occur the over-voltage of thyristor both ends, thyristor control unit can be touched by protectiveness at this time
Hair forces conducting thyristor, and returns to protectiveness triggering return signal to main control unit.
6. a kind of thyristor switch valve control system according to claim 1, which is characterized in that the main control unit is according to being
Blanket insurance protects action request and sends trigger signal to thyristor control unit, triggers thyristor, and real-time reception thyristor state prison
Survey signal monitoring thyristor state.
7. a kind of thyristor switch valve control system according to claim 6, which is characterized in that the thyristor state includes
Thyristor state is normal, thyristor protection triggers and thyristor returns dropout.
8. a kind of thyristor switch valve control system as claimed in claim 7, which is characterized in that the thyristor state is normal
Refer to that thyristor control unit sends back to normal return signal when each power frequency period thyristor both end voltage is added to certain value.
9. a kind of thyristor switch valve control system as claimed in claim 7, which is characterized in that the thyristor returns signal
The normal return signal for referring to that continuous n power frequency period main control unit does not monitor thyristor control unit return is lost, n is positive whole
It counts and is determined by concrete application.
10. a kind of thyristor switch valve control system as described in claim 1, which is characterized in that the thyristor control unit
Including logic control circuit, and connect respectively with logic control circuit send and receive circuit, gate trigger circuit and
Thyristor status monitoring circuit；The logic control circuit generates trigger pulse triggers thyristor by gate trigger circuit；Institute
It states and sends and receivees circuit and be used for transmission thyristor controlled series compensation trigger signal, thyristor status signal；The thyristor status monitoring
Circuit is used to monitor the state of thyristor, and provides thyristor status signal to logic control circuit；
The main control unit triggers thyristor according to system protection action request transmission trigger signal to thyristor control unit,
And real-time reception thyristor status monitoring signal, thyristor state is monitored, if monitoring thyristor abnormal state, after starting
Standby protection act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104378.0A CN109379066A (en) | 2018-09-21 | 2018-09-21 | A kind of thyristor switch valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811104378.0A CN109379066A (en) | 2018-09-21 | 2018-09-21 | A kind of thyristor switch valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109379066A true CN109379066A (en) | 2019-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811104378.0A Pending CN109379066A (en) | 2018-09-21 | 2018-09-21 | A kind of thyristor switch valve control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109379066A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208366A (en) * | 2020-01-09 | 2020-05-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
| CN111398765A (en) * | 2020-04-01 | 2020-07-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307850Y (en) * | 2008-12-08 | 2009-09-09 | 顺特电气有限公司 | Thyristor valve photoelectric trigger board used for static var compensator |
| CN102055307A (en) * | 2010-10-08 | 2011-05-11 | 广州智光电气股份有限公司 | Trigger and online monitoring system for thyristor valve group |
| CN102970016A (en) * | 2012-11-19 | 2013-03-13 | 许继集团有限公司 | High-power solid-state switch |
-
2018
- 2018-09-21 CN CN201811104378.0A patent/CN109379066A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201307850Y (en) * | 2008-12-08 | 2009-09-09 | 顺特电气有限公司 | Thyristor valve photoelectric trigger board used for static var compensator |
| CN102055307A (en) * | 2010-10-08 | 2011-05-11 | 广州智光电气股份有限公司 | Trigger and online monitoring system for thyristor valve group |
| CN102970016A (en) * | 2012-11-19 | 2013-03-13 | 许继集团有限公司 | High-power solid-state switch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208366A (en) * | 2020-01-09 | 2020-05-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
| CN111208366B (en) * | 2020-01-09 | 2022-03-29 | 南京南瑞继保电气有限公司 | Method for judging electrification of high-voltage valve bank |
| CN111398765A (en) * | 2020-04-01 | 2020-07-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
| CN111398765B (en) * | 2020-04-01 | 2022-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Thyristor triggering abnormity protection method for direct current transmission system |
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Application publication date: 20190222 |
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