CN106787656A - A kind of current-limiting type UPFC DC side overvoltage protective systems - Google Patents
A kind of current-limiting type UPFC DC side overvoltage protective systems Download PDFInfo
- Publication number
- CN106787656A CN106787656A CN201611243353.XA CN201611243353A CN106787656A CN 106787656 A CN106787656 A CN 106787656A CN 201611243353 A CN201611243353 A CN 201611243353A CN 106787656 A CN106787656 A CN 106787656A
- Authority
- CN
- China
- Prior art keywords
- current
- igbt
- diode
- resistance
- filter
- 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
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention discloses a kind of current-limiting type UPFC DC side overvoltage protective systems; overvoltage crowbar, parallel connection converter, series transformer including being connected in parallel on the DC capacitor two ends of current-limiting type UPFC; parallel connection converter is connected by the first filter inductance with shunt transformer; series transformer is connected by the second filter inductance with series transformer, and the other end of series transformer is connected with current limiter；Overvoltage crowbar includes current-limiting resistance, diode, breakdown diode, filter resistance, filter capacitor, IGBT, IGBT drive circuit and discharge resistance; the overvoltage crowbar is by breakdown diode trigger action; IGBT as discharge paths switch; breakdown diode is connected with current-limiting resistance; diode is to prevent breakdown diode from bearing backward voltage; filter resistance and filter capacitor constitute the LPF branch road for preventing IGBT false triggerings, and negative electrode and the controller signals of breakdown diode are connected to IGBT drive circuit by an OR gate.
Description
Technical field
The present invention relates to a kind of current-limiting type UPFC DC side overvoltage protective systems, 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 current limliting in current-limiting type UPFC
Also there is charging overvoltage problem that short circuit current causes to DC capacitor etc. in formula UPFC.
In view of this, the present inventor is studied this, specially develops a kind of current-limiting type UPFC DC side overvoltage protections
Thus system, 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 protective systems.
To achieve these goals, solution of the invention is：
A kind of current-limiting type UPFC DC side overvoltage protective systems, including the overvoltage for being connected in parallel on the DC capacitor two ends of current-limiting type UPFC
Protection circuit, parallel connection converter, series transformer, the parallel connection converter pass through the first filter inductance and shunt transformer phase
Even, the series transformer is connected by the second filter inductance with series transformer, the other end and the limit of the series transformer
Stream device is connected；Wherein, overvoltage crowbar include be connected with each other current-limiting resistance, diode, breakdown diode, filter resistance,
Filter capacitor, IGBT, IGBT drive circuit and discharge resistance, wherein, the overvoltage crowbar is dynamic by breakdown diode triggering
Make, IGBT as discharge paths switch, breakdown diode connects with current-limiting resistance, and diode is to prevent breakdown diode from bearing
Backward voltage, filter resistance and filter capacitor constitute the LPF branch road for preventing IGBT false triggerings, the negative electrode of breakdown diode
IGBT drive circuit is connected to by an OR gate with controller signals, discharge resistance is connected with IGBT.
Current-limiting type UPFC DC side overvoltage protective systems 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 protective systems, including the direct current for being connected in parallel on current-limiting type UPFC
Overvoltage crowbar, parallel connection converter, the series transformer at electric capacity C two ends, the parallel connection converter pass through the first filter inductance
L1It is connected with shunt transformer, the series transformer passes through the second filter inductance L2With series transformer TseIt is connected, the string
The other end for joining transformer is connected with current limiter.Wherein, as in Figure 2-4, the overvoltage crowbar includes what is be connected with each other
Current-limiting resistance R1, diode D, breakdown diode BOD, filter resistance R2, filter capacitor C2, IGBT, IGBT drive circuit and electric discharge
Resistance R3, wherein, the overvoltage crowbar is by breakdown diode BOD（Break Over Diode）Trigger action, IGBT makees
It is the switch of discharge paths, breakdown diode and current-limiting resistance R1Series connection, diode is to prevent breakdown diode BOD from bearing reversely
Voltage, filter resistance R2With filter capacitor C2Composition prevents the LPF branch road of IGBT false triggerings, the moon of breakdown diode BOD
Pole is connected to IGBT drive circuit, discharge resistance R with controller signals by an OR gate3It is then high power discharge resistance, with
IGBT is connected.
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 protective systems 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 protective systems, it is characterised in that：Direct current including being connected in parallel on current-limiting type UPFC
The overvoltage crowbar at electric capacity two ends, parallel connection converter, series transformer, the parallel connection converter by the first filter inductance with
Shunt transformer is connected, and the series transformer is connected by the second filter inductance with series transformer, the series transformer
The other end be connected with current limiter；Wherein, overvoltage crowbar includes the current-limiting resistance being connected with each other, diode, punctures two poles
Pipe, filter resistance, filter capacitor, IGBT, IGBT drive circuit and discharge resistance, wherein, the overvoltage crowbar is by puncturing
Diode triggered is acted, IGBT as discharge paths switch, breakdown diode connects with current-limiting resistance, and diode is to prevent from hitting
Wear diode and bear backward voltage, filter resistance and filter capacitor constitute the LPF branch road for preventing IGBT false triggerings, puncture
The negative electrode of diode is connected to IGBT drive circuit with controller signals by an OR gate, and discharge resistance is then high power discharge
Resistance, is connected with IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243353.XA CN106787656A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protective systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243353.XA CN106787656A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protective systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106787656A true CN106787656A (en) | 2017-05-31 |
Family
ID=58927483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243353.XA Pending CN106787656A (en) | 2016-12-29 | 2016-12-29 | A kind of current-limiting type UPFC DC side overvoltage protective systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106787656A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638979A (en) * | 2018-11-06 | 2019-04-16 | 全球能源互联网研究院有限公司 | A kind of protective device and method of magnetic resonance wireless power transmission equipment receiving end |
| US11602022B2 (en) | 2020-12-23 | 2023-03-07 | B/E Aerospace, Inc. | Isolated voltage detection with current limiters |
Citations (9)
| 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 |
| 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 |
-
2016
- 2016-12-29 CN CN201611243353.XA patent/CN106787656A/en active Pending
Patent Citations (9)
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638979A (en) * | 2018-11-06 | 2019-04-16 | 全球能源互联网研究院有限公司 | A kind of protective device and method of magnetic resonance wireless power transmission equipment receiving end |
| US11602022B2 (en) | 2020-12-23 | 2023-03-07 | B/E Aerospace, Inc. | Isolated voltage detection with current limiters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3335287B1 (en) | Fault current managing branch for surge-less current interruption in dc system | |
| CN104953568B (en) | A kind of fault protecting method of flexible direct current power transmission system | |
| US9478974B2 (en) | DC voltage circuit breaker | |
| CN106786403B (en) | Direct current solid-state circuit breaker with follow current loop | |
| CN104779593A (en) | Direct-current solid circuit breaker and control method thereof | |
| CN103795045B (en) | Protection device | |
| CN103346528A (en) | Current limiting type hybrid direct-current circuit breaker based on power electronic combination switch | |
| CN206517292U (en) | A kind of current-limiting type UPFC DC side overvoltage protection circuits | |
| Li et al. | A new topology for current limiting HVDC circuit breaker | |
| CN106301307B (en) | Novel cascaded full-bridge high-voltage direct-current circuit breaker and control method thereof | |
| CN107134762A (en) | A kind of based superconductive current limliting without arc dc circuit breaker and cutoff method | |
| CN203180510U (en) | Combined overvoltage protector of resistance capacitance lightening arrester | |
| CN104575992A (en) | Online monitoring and isolation device for direct current magnetic bias of power transformer | |
| CN203387155U (en) | Current-limiting hybrid direct-current circuit breaker based on power electronic compound switch | |
| CN106787656A (en) | A kind of current-limiting type UPFC DC side overvoltage protective systems | |
| CN105811369A (en) | Bypass protection device for high-voltage DC circuit breaker and protection method thereof | |
| CN106532757A (en) | Bipolar flexible DC power transmission system, converter station thereof and control method of converter station | |
| CN103839710A (en) | Mixed type direct current breaker | |
| CN106787655A (en) | A kind of current-limiting type UPFC DC side overvoltage protection circuits | |
| CN206481211U (en) | A kind of current-limiting type UPFC DC side overvoltage protective systems | |
| CN103280802B (en) | Paralleling reactor operation overvoltage managing circuit and managing method of paralleling reactor operation overvoltage managing circuit | |
| CN205246812U (en) | Fault detection device of flexible direct current circuit | |
| CN206211547U (en) | Bipolar flexible direct current transmission system and its current conversion station | |
| CN110311353A (en) | A kind of current-limiting type mixed DC breaker and current limliting method for dividing | |
| CN201726124U (en) | Large current quick by-pass protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |