CN106787655A - A kind of current-limiting type UPFC DC side overvoltage protection circuits - Google Patents
A kind of current-limiting type UPFC DC side overvoltage protection circuits Download PDFInfo
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- CN106787655A CN106787655A CN201611243160.4A CN201611243160A CN106787655A CN 106787655 A CN106787655 A CN 106787655A CN 201611243160 A CN201611243160 A CN 201611243160A CN 106787655 A CN106787655 A CN 106787655A
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- 230000015556 catabolic process Effects 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims abstract description 22
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
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- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention discloses a kind of current-limiting type UPFC DC side overvoltage protection circuits, its DC capacitor two ends for being connected in parallel on current-limiting type UPFC, including current-limiting resistance, diode, breakdown diode, filter resistance, filter capacitor, IGBT, IGBT drive circuit and discharge resistance, overvoltage crowbar is by breakdown diode trigger action, IGBT as discharge paths switch, breakdown diode is connected with current-limiting resistance, filter resistance and filter capacitor constitute the LPF branch road for preventing IGBT false triggerings, the negative electrode of breakdown diode is connected to IGBT drive circuit with controller signals by an OR gate, discharge resistance is connected with IGBT.Above-mentioned current-limiting type UPFC DC side overvoltage protection circuits, after short trouble occurs, the overvoltage crowbar can be significantly reduced the surge voltage amplitude and the rate of climb that DC capacitor bears under the cooperation of current limiter, and protect auto-action, not have time delay.
Description
Technical field
The present invention relates to a kind of current-limiting type UPFC DC side overvoltage protection circuits, belong to electric network protection field.
Background technology
THE UPFC（Unified Power Flow Controller, UPFC）Be current comprehensive function the most
Powerful FACTS devices.But the UPFC of real input industrialization operation is few in world wide so far, and it should in industrialization
Problems are also there are on road.For example, it must have reply system short-circuit fault electric current and system high voltage to impact
Ability it is without prejudice to ensure itself.The scholar of Zhejiang University proposes a kind of current-limiting type UPFC on the basis of UPFC, can
Reply short trouble and voltge surge, and successfully manufacture experimently 10kV model machines.But in high-pressure system, also there is short circuit in current-limiting type UPFC
Charging overvoltage problem that electric current causes to DC capacitor etc..
In view of this, the present inventor is studied this, specially develops a kind of current-limiting type UPFC DC side overvoltage protections
Thus circuit, this case produces.
The content of the invention
It is an object of the invention to provide a kind of current-limiting type UPFC DC side overvoltage protection circuits.
To achieve these goals, solution of the invention is：
A kind of current-limiting type UPFC DC side overvoltage protection circuits, are connected in parallel on the DC capacitor two ends of current-limiting type UPFC, including mutual
The current-limiting resistance of connection, diode, breakdown diode, filter resistance, filter capacitor, IGBT, IGBT drive circuit and electric discharge electricity
Resistance, wherein, the overvoltage crowbar punctures two poles by breakdown diode trigger action, IGBT as the switch of discharge paths
Pipe is connected with current-limiting resistance, and to prevent breakdown diode from bearing backward voltage, filter resistance and filter capacitor constitute anti-diode
The only LPF branch road of IGBT false triggerings, negative electrode and the controller signals of breakdown diode are connected to IGBT by an OR gate
Drive circuit, discharge resistance is connected with IGBT.
Current-limiting type UPFC DC side overvoltage protection circuits of the present invention have the following advantages that：
1st, after short trouble occurs, the overvoltage crowbar can be significantly reduced DC capacitor under the cooperation of current limiter and hold
The surge voltage amplitude and the rate of climb received, and auto-action is protected, there is no time delay；
2nd, for electric capacity instantaneous overvoltage, breakdown diode after short trouble cuts off in overvoltage crowbar can be turned off therewith,
And current-limiting type UPFC is recovered normal operation automatically, it is to avoid device is stopped transport；
3rd, because under nominal situation, the operating voltage of DC capacitor is less than the breakdown voltage of breakdown diode, i.e. breakdown diode
State is off, IGBT is not turned on, therefore overvoltage crowbar has little to no effect to the conventional operation of current-limiting type UPFC；
4th, chosen by carrying out appropriate parameter to breakdown diode, current-limiting resistance, discharge resistance, diode and IGBT, current limliting
Formula UPFC DC side overvoltage protection circuits are applicable to different voltage class, especially the protection of high-voltage current-limiting UPFC.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Brief description of the drawings
Fig. 1 is the main topological diagrams of current-limiting type UPFC of the present embodiment；
Fig. 2 is the current-limiting type UPFC DC side overvoltage protection circuit schematic diagrams of the present embodiment；
Fig. 3 is the breakdown diode graphical diagram of the present embodiment；
Fig. 4 is the volt-ampere characteristics of figure of the breakdown diode of the present embodiment.
Specific embodiment
As shown in figure 1, a kind of current-limiting type UPFC DC side overvoltage protection circuits, are connected in parallel on the DC capacitor of current-limiting type UPFC
C two ends.As in Figure 2-4, the overvoltage crowbar includes the current-limiting resistance R being connected with each other1, diode D, breakdown diode
BOD, filter resistance R2, filter capacitor C2, IGBT, IGBT drive circuit and discharge resistance R3, wherein, the overvoltage crowbar
By breakdown diode BOD（Break Over Diode）Trigger action, IGBT as discharge paths switch, breakdown diode with
Current-limiting resistance R1Series connection, diode is to prevent breakdown diode BOD from bearing backward voltage, filter resistance R2With filter capacitor C2Structure
Into the LPF branch road for preventing IGBT false triggerings, negative electrode and the controller signals of breakdown diode BOD are connected by an OR gate
It is connected to IGBT drive circuit, discharge resistance R3It is then high power discharge resistance, is connected with IGBT.
Under nominal situation, the breakdown voltage of the operating voltage less than breakdown diode BOD of DC capacitor C puncture two poles
Pipe BOD is off state, and IGBT is not turned on, therefore the overvoltage crowbar is to the no shadow of normally operation of current-limiting type UPFC
Ring.After failure occurs, electric capacity C voltage exceedes the breakdown voltage U of breakdown diode BODBO, generation punctures conducting electric current peak value
For：
It produces a voltage signal I in the M points of Fig. 2TmR2, then by after OR gate and IGBT drive circuit so that IGBT is triggered
Conducting, DC capacitor C and discharge resistance R3, IGBT constitute discharge loop, effectively limit the peak value of DC capacitor C voltage and upper
Lifting speed, the filter capacitor C in LPF branch road2Also play the effect of of short duration support M point current potentials.
As failure removal, DC capacitor C voltage decline, breakdown diode BOD and IGBT are also turned off in succession, current-limiting type
UPFC returns to normal operating condition, therefore for temporary charge reservoir overvoltage, current-limiting type UPFC is without out of service, the overvoltage protection
The application of circuit can improve the reliability of device.
Current-limiting type UPFC DC side overvoltage protection circuits described in the present embodiment have the following advantages that：
1st, after short trouble occurs, the overvoltage crowbar can be significantly reduced DC capacitor C under the cooperation of current limiter
The surge voltage amplitude and the rate of climb born, and auto-action is protected, there is no time delay；
2nd, for electric capacity C instantaneous overvoltages, breakdown diode BOD after short trouble cuts off in overvoltage crowbar can be closed therewith
It is disconnected, and current-limiting type UPFC is recovered normal operation automatically, it is to avoid device is stopped transport；
3rd, because under nominal situation, the breakdown voltage of the operating voltage less than breakdown diode BOD of DC capacitor C puncture two
Pole pipe BOD is off state, and IGBT is not turned on, therefore overvoltage crowbar does not almost have to the conventional operation of current-limiting type UPFC
Influence；
4th, by breakdown diode BOD, current-limiting resistance R1, discharge resistance R3, diode D and IGBT carry out appropriate parameter choosing
Take, current-limiting type UPFC DC side overvoltage protection circuits are applicable to different voltage class, especially the guarantor of high-voltage current-limiting UPFC
Shield.
Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common
Appropriate change or modification that technical staff is done to it, all should be regarded as not departing from patent category of the invention.
Claims (1)
1. a kind of current-limiting type UPFC DC side overvoltage protection circuits, it is characterised in that：It is connected in parallel on the DC capacitor of current-limiting type UPFC
Two ends, including current-limiting resistance, diode, breakdown diode, filter resistance, filter capacitor, IGBT, IGBT driving being connected with each other
Circuit and discharge resistance, wherein, the overvoltage crowbar is opened by breakdown diode trigger action, IGBT as discharge paths
Close, breakdown diode is connected with current-limiting resistance, diode is to prevent breakdown diode from bearing backward voltage, filter resistance and filtering
Electric capacity constitutes the LPF branch road for preventing IGBT false triggerings, and negative electrode and the controller signals of breakdown diode pass through an OR gate
IGBT drive circuit is connected to, discharge resistance is connected with IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243160.4A CN106787655A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protection circuits |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243160.4A CN106787655A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protection circuits |
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| CN106787655A true CN106787655A (en) | 2017-05-31 |
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| CN201611243160.4A Pending CN106787655A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protection circuits |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371099A (en) * | 2020-03-03 | 2020-07-03 | 国家电网公司西北分部 | UPFC fault transition device and method based on thyristor transfer resistance circuit |
| US11602022B2 (en) | 2020-12-23 | 2023-03-07 | B/E Aerospace, Inc. | Isolated voltage detection with current limiters |
Citations (10)
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|---|---|---|---|---|
| US20110188162A1 (en) * | 2010-02-01 | 2011-08-04 | Phoenix Contact Gmbh & Co. Kg | Device for diverting surge currents or transient overvoltages |
| CN102299512A (en) * | 2011-07-18 | 2011-12-28 | 中国电力科学研究院 | High-capacity capacitor overvoltage protection circuit adopting BOD (bistable optical device) element |
| CN202424157U (en) * | 2011-12-20 | 2012-09-05 | 比亚迪股份有限公司 | LED output protection circuit |
| CN103538481A (en) * | 2012-07-12 | 2014-01-29 | 北汽福田汽车股份有限公司 | Control system and brake protection device of electric automobile |
| CN104753326A (en) * | 2015-04-09 | 2015-07-01 | 广东工业大学 | AC-DC (alternating current-direct current) drive output filter capacitor quick active leakage circuit |
| CN104868457A (en) * | 2014-12-24 | 2015-08-26 | 万洲电气股份有限公司 | IGBT overvoltage protective circuit capable of large-power energy discharge |
| CN105098721A (en) * | 2014-04-16 | 2015-11-25 | 南京南瑞继保电气有限公司 | Overvoltage protection circuit and overvoltage protection method for converter sub-module |
| CN205657584U (en) * | 2016-02-25 | 2016-10-19 | 苏州英威腾电力电子有限公司 | Two -stage discharge device and converter |
| CN205681111U (en) * | 2016-05-24 | 2016-11-09 | 国家电网公司 | A kind of novel current-limiting type power flow control system |
| CN206517292U (en) * | 2016-12-29 | 2017-09-22 | 国网浙江省电力公司绍兴供电公司 | A kind of current-limiting type UPFC DC side overvoltage protection circuits |
-
2016
- 2016-12-29 CN CN201611243160.4A patent/CN106787655A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110188162A1 (en) * | 2010-02-01 | 2011-08-04 | Phoenix Contact Gmbh & Co. Kg | Device for diverting surge currents or transient overvoltages |
| CN102299512A (en) * | 2011-07-18 | 2011-12-28 | 中国电力科学研究院 | High-capacity capacitor overvoltage protection circuit adopting BOD (bistable optical device) element |
| CN202424157U (en) * | 2011-12-20 | 2012-09-05 | 比亚迪股份有限公司 | LED output protection circuit |
| CN103538481A (en) * | 2012-07-12 | 2014-01-29 | 北汽福田汽车股份有限公司 | Control system and brake protection device of electric automobile |
| CN105098721A (en) * | 2014-04-16 | 2015-11-25 | 南京南瑞继保电气有限公司 | Overvoltage protection circuit and overvoltage protection method for converter sub-module |
| CN104868457A (en) * | 2014-12-24 | 2015-08-26 | 万洲电气股份有限公司 | IGBT overvoltage protective circuit capable of large-power energy discharge |
| CN104753326A (en) * | 2015-04-09 | 2015-07-01 | 广东工业大学 | AC-DC (alternating current-direct current) drive output filter capacitor quick active leakage circuit |
| CN205657584U (en) * | 2016-02-25 | 2016-10-19 | 苏州英威腾电力电子有限公司 | Two -stage discharge device and converter |
| CN205681111U (en) * | 2016-05-24 | 2016-11-09 | 国家电网公司 | A kind of novel current-limiting type power flow control system |
| CN206517292U (en) * | 2016-12-29 | 2017-09-22 | 国网浙江省电力公司绍兴供电公司 | A kind of current-limiting type UPFC DC side overvoltage protection circuits |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371099A (en) * | 2020-03-03 | 2020-07-03 | 国家电网公司西北分部 | UPFC fault transition device and method based on thyristor transfer resistance circuit |
| CN111371099B (en) * | 2020-03-03 | 2021-06-18 | 国家电网公司西北分部 | UPFC fault transition device and method based on thyristor transfer resistance circuit |
| US11602022B2 (en) | 2020-12-23 | 2023-03-07 | B/E Aerospace, Inc. | Isolated voltage detection with current limiters |
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Application publication date: 20170531 |