CN105470923B - Increase the method in ultra-high voltage converter station converter unit protection region - Google Patents
Increase the method in ultra-high voltage converter station converter unit protection region Download PDFInfo
- Publication number
- CN105470923B CN105470923B CN201511021565.9A CN201511021565A CN105470923B CN 105470923 B CN105470923 B CN 105470923B CN 201511021565 A CN201511021565 A CN 201511021565A CN 105470923 B CN105470923 B CN 105470923B
- Authority
- CN
- China
- Prior art keywords
- transverter
- bipolar
- wall bushing
- current
- failure
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005404 monopole Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims abstract description 3
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- 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
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Rectifiers (AREA)
Abstract
The present invention relates to a kind of method for increasing ultra-high voltage converter station converter unit protection region.Its main feature is that include the following steps：The optic current transformer of direct-current wall bushing valve Room side is moved on the outside of DC fields PLC reactors first, so as to which wall bushing to be included to the protection zone of transverter, bipolar when ultra-high voltage converter station is double converter operation, communication between the current conversion station of both ends is normal and the active power controller mode of each pole in two stations is in bipolar power control model, after one of transverter direct-current wall bushing failure, monopole where the first locking failure transverter is to realize trouble point blow-out, after isolating the failure transverter, restart again and perfect transverter, realize bipolar three transverter balance movements.The method of the present invention can be applied to all in fortune UHVDC converter station, bipolar four valve group operation, after single converter direct-current wall bushing breaks down, performs new action logic, ensures straight-flow system stable operation.
Description
Technical field
The present invention relates to a kind of method for increasing ultra-high voltage converter station converter unit protection region.
Background technology
Ultrahigh voltage direct current wall bushing technical sophistication, manufacture difficulty are big, high failure rate, and valve Room wall bushing failure belongs to pole
Bus-bar area failure, the action of direct current pole bus differential protecting, direct current locking pole.Such as respectively in Central Region station and gold since 2015
Direct-current wall bushing external insulation flashover and interior insulation flashover occur for China station, cause monopole locking twice.
The content of the invention
The object of the present invention is to provide a kind of method for increasing ultra-high voltage converter station converter unit protection region, it is possible to increase changes
The safety and reliability of stream station overall operation, avoids straight-flow system monopolar operation after monopole locking occurs from causing grounding electrode electric current
The problem of excessive, also reduce the operation that operations staff is gone to metallic return by Ground return.
A kind of method for increasing ultra-high voltage converter station converter unit protection region, it is particular in that, includes the following steps：
The optic current transformer of direct-current wall bushing valve Room side is moved on the outside of DC fields PLC reactors first, so that by wall bushing
The protection zone of transverter is included, bipolar when ultra-high voltage converter station is that double converter is run, logical between the current conversion station of both ends
News are normal and the active power controller mode of each pole in two stations is worn in bipolar power control model, one of transverter direct current
After wall sleeve failure, the monopole where the first locking failure transverter is to realize trouble point blow-out, after isolating the failure transverter,
Restart again and perfect transverter, realize bipolar three transverter balance movements.
Wherein bipolar power control model refers to distribute identical current reference value for each pole, if the operation electricity of two pole
Press equal, then the transimission power of each pole is equal.
The method of the present invention can be applied to all in fortune UHVDC converter station, bipolar four valve group operation, work as monodromy
After stream device direct-current wall bushing breaks down, new action logic is performed, ensures straight-flow system stable operation.The method of the present invention will
Optic current transformer is moved on the outside of the PLC reactors of outdoor direct field in the valve Room, is increased transverter differential protection scope, is improved and change
The safety and reliability of stream station overall operation, avoids after monopole locking occurs, straight-flow system monopolar operation causes earthing pole
The problem of electric current is excessive, and reduce the operation that operations staff is gone to metallic return by Ground return.
Embodiment
A kind of method for increasing ultra-high voltage converter station converter unit protection region, includes the following steps：First by the valve Room
Optic current transformer is moved on the outside of DC fields PLC reactors, so that transverter direct-current wall bushing to be included to the protection of transverter
Region.Bipolar when ultra-high voltage converter station is that double converter is run, and the communication between the current conversion station of both ends is normal and two stations are each
The active power controller mode of pole is that identical current reference value is distributed in each pole in bipolar power control model, if two
The working voltage of a pole is equal, then the transimission power of each pole is equal.One of transverter direct-current wall bushing failure
Afterwards, the monopole where the first locking failure transverter after isolating the failure transverter, then is restarted sound with realizing trouble point blow-out
Transverter, realizes bipolar three transverter balance movements, and identical current reference value, grounding electrode electric current zero are distributed in each pole.
This method moves to the light CT of direct-current wall bushing valve Room side on the outside of DC fields PLC reactors, by this method
Increase the regional extent of converter unit protection, wall bushing is included into converter unit protection region, after wall bushing breaks down, by
Failure is removed in the action of transverter differential protection, improves direct current transportation reliability.
As shown in Figure 1, the high-end transverter differential protection amount of adopting is current transformer T11 and current transformer T12, it is corresponding
Value represents that its action policy is as follows with IDCP and IDCN respectively：
I sections：|IDCP-IDCN|>MAX (0.07pu, | (IDCP+IDCN) * 0.5 | * 0.2), delay 200ms lockings pole；
II sections：|IDCP-IDCN|>MAX (0.3pu, | (IDCP+IDCN) * 0.5 | * 0.2), delay 5ms lockings pole.
The present invention particular content be：
1st, optic current transformer in the valve Room is moved on on the outside of DC fields PLC reactors, and increases optic current transformer basis
And pillar.
2nd, DC control protection software is changed, increase transverter direct-current wall bushing failure is restarted automatically perfects transverter
Logic.
3rd, in DC control protection software systems debugging stage, simulation wall bushing failure, after verifying wall bushing failure
It is automatic restart perfect that converter Control defencive function is normal, and the result of the action is correct.
Claims (1)
- A kind of 1. method for increasing ultra-high voltage converter station converter unit protection region, it is characterised in that include the following steps：First will The optic current transformer of direct-current wall bushing valve Room side is moved on the outside of DC fields PLC reactors, is changed so that wall bushing be included The protection zone of device is flowed, bipolar when ultra-high voltage converter station is that double converter is run, and the communication between the current conversion station of both ends is normal And two each pole in station active power controller mode in bipolar power control model, one of transverter direct-current wall bushing After failure, the monopole where the first locking failure transverter after isolating the failure transverter, then is restarted with realizing trouble point blow-out Perfect transverter, realize bipolar three transverter balance movements；Wherein bipolar power control model refers to distribute identical current reference value for each pole, if the working voltage phase of two pole Deng then the transimission power of each pole is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021565.9A CN105470923B (en) | 2015-12-31 | 2015-12-31 | Increase the method in ultra-high voltage converter station converter unit protection region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021565.9A CN105470923B (en) | 2015-12-31 | 2015-12-31 | Increase the method in ultra-high voltage converter station converter unit protection region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105470923A CN105470923A (en) | 2016-04-06 |
| CN105470923B true CN105470923B (en) | 2018-05-15 |
Family
ID=55608369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511021565.9A Active CN105470923B (en) | 2015-12-31 | 2015-12-31 | Increase the method in ultra-high voltage converter station converter unit protection region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470923B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970879B (en) * | 2019-12-26 | 2021-10-01 | 南京南瑞继保电气有限公司 | Method and device for controlling valve area ground fault of extra-high voltage direct current low-side converter |
| CN111463757B (en) * | 2020-05-09 | 2022-05-20 | 国网宁夏电力有限公司 | Protection partitioning and action logic optimization method for extra-high voltage converter station converter |
| CN113595039B (en) * | 2021-06-07 | 2023-09-12 | 国网宁夏电力有限公司检修公司 | Isolation control method, medium and system for faults of extra-high voltage converter station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1877948A (en) * | 2006-06-28 | 2006-12-13 | 南京南瑞继保电气有限公司 | Method for implementing electrode isolation of super-high voltage DC system under the condition of dipolar operation and monopolar fault by using phase shifting |
| CN101741082A (en) * | 2009-12-14 | 2010-06-16 | 南京南瑞继保电气有限公司 | Method for withdrawing extra-high voltage direct-current serial valve bank without inter-station communication |
| CN102157929A (en) * | 2011-04-13 | 2011-08-17 | 国网电力科学研究院 | Main wiring method of multi-terminal ultra high voltage direct current transmission system |
| US8437113B2 (en) * | 2006-06-22 | 2013-05-07 | Abb Technology Ltd. | Cooling and shielding of a high voltage converter |
| CN105048324A (en) * | 2015-08-17 | 2015-11-11 | 中国能源建设集团广东省电力设计研究院有限公司 | L-shaped distribution structure of valve hall converter transformer of extra-high-voltage direct-current converter station |
-
2015
- 2015-12-31 CN CN201511021565.9A patent/CN105470923B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8437113B2 (en) * | 2006-06-22 | 2013-05-07 | Abb Technology Ltd. | Cooling and shielding of a high voltage converter |
| CN1877948A (en) * | 2006-06-28 | 2006-12-13 | 南京南瑞继保电气有限公司 | Method for implementing electrode isolation of super-high voltage DC system under the condition of dipolar operation and monopolar fault by using phase shifting |
| CN101741082A (en) * | 2009-12-14 | 2010-06-16 | 南京南瑞继保电气有限公司 | Method for withdrawing extra-high voltage direct-current serial valve bank without inter-station communication |
| CN102157929A (en) * | 2011-04-13 | 2011-08-17 | 国网电力科学研究院 | Main wiring method of multi-terminal ultra high voltage direct current transmission system |
| CN105048324A (en) * | 2015-08-17 | 2015-11-11 | 中国能源建设集团广东省电力设计研究院有限公司 | L-shaped distribution structure of valve hall converter transformer of extra-high-voltage direct-current converter station |
Non-Patent Citations (2)
| Title |
|---|
| 800kV特高压直流穿墙套管故障分析;谢超等;《中国电力》;20150731;第48卷(第7期);全文 * |
| 特高压直流控制保护系统综述;蔡晓越等;《上海电力》;20110228(第2期);正文第100页第4.2节换流器保护以及第101页第4.3节极保护 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105470923A (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105470923B (en) | Increase the method in ultra-high voltage converter station converter unit protection region | |
| CN104184108A (en) | DC circuit breaker and control method thereof | |
| CN105071373B (en) | The configuration system and method for dc switch field in a kind of flexible direct current power transmission system | |
| CN106786403A (en) | A kind of DC solid circuit breaker with continuous current circuit | |
| CN103887787A (en) | Arc extinguishing method of intrinsically safe inductive circuit | |
| US9240680B2 (en) | Switch for a transmission path for high-voltage direct current | |
| CN204216866U (en) | A kind of reset circuit and electronic equipment | |
| CN103248140B (en) | A kind of method that metallic return runs | |
| CN104377805A (en) | Communication station low-voltage distribution system | |
| CN104821727A (en) | Switch power supply suitable for high-overvoltage-grade high-altitude place | |
| CN105576550A (en) | Method for live-line replacement of high voltage power transmission line monolithic strain insulator | |
| CN104362661B (en) | Flexible DC transmission bipolar main junction device | |
| CN204258112U (en) | A kind of combined transformer | |
| CN202602140U (en) | Combined electric device for large transformer neutral point protection equipment | |
| CN205453284U (en) | Take voltage clamp controller of seamless handover function | |
| CN105186903B (en) | A kind of taking for two-level inverter can circuit and its starting control method | |
| CN106356881A (en) | Flexible direct current power transmission system and fault recovery method thereof | |
| CN104362659A (en) | Synchronous double-pole intertripping method of high-voltage direct-current power transmission system in in-station grounding mode | |
| CN104053259B (en) | High frequency electric source induction heating time protector and guard method thereof | |
| CN203277985U (en) | Three-phase busbar arc isolation apparatus | |
| CN203166444U (en) | Overhead transmission line with demarcation load switch | |
| CN203377582U (en) | Overvoltage breaking zero protection device | |
| CN204376742U (en) | High-voltage direct current (DC) power system | |
| CN205231732U (en) | Net energy -saving control system is joined in marriage to intelligence | |
| CN102684091A (en) | Combined electrical device for large-sized transformer neutral point protection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |