CN110429572B - 一种直流配电网极间故障快速保护方法 - Google Patents
一种直流配电网极间故障快速保护方法 Download PDFInfo
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- CN110429572B CN110429572B CN201910769702.9A CN201910769702A CN110429572B CN 110429572 B CN110429572 B CN 110429572B CN 201910769702 A CN201910769702 A CN 201910769702A CN 110429572 B CN110429572 B CN 110429572B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 230000001052 transient effect Effects 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 24
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- 238000004364 calculation method Methods 0.000 abstract description 21
- 238000004422 calculation algorithm Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- 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
- H02H7/268—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 for dc systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
Description
L<sub>mar5</sub> | 1mH | L<sub>set5</sub> | 3.42mH |
L<sub>mar5</sub> | 1mH | σ<sub>set</sub> | 10% |
K<sub>rel</sub> | 0.85 | - | - |
Claims (3)
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CN201910769702.9A CN110429572B (zh) | 2019-08-20 | 2019-08-20 | 一种直流配电网极间故障快速保护方法 |
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CN201910769702.9A CN110429572B (zh) | 2019-08-20 | 2019-08-20 | 一种直流配电网极间故障快速保护方法 |
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CN110429572A CN110429572A (zh) | 2019-11-08 |
CN110429572B true CN110429572B (zh) | 2021-03-16 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6392422B1 (en) * | 1997-06-17 | 2002-05-21 | Dip.-Ing. Walther Bender Gmbh & Co. Kg | Monitoring insulation and fault current in an A/C current network to provide load shutoff whenever differential current exceeds a certain response value |
CN107681641A (zh) * | 2017-08-01 | 2018-02-09 | 华北电力大学 | 基于直流电抗器电压的多端柔性直流电网边界保护方法 |
CN108469576A (zh) * | 2018-04-20 | 2018-08-31 | 中国科学院电工研究所 | 一种多端交直流混合配电网直流故障检测方法 |
CN109188188A (zh) * | 2018-07-10 | 2019-01-11 | 国网浙江省电力有限公司杭州供电公司 | 基于电压监控的多端柔性直流输电线路故障单端判别方法 |
CN109839570A (zh) * | 2019-03-07 | 2019-06-04 | 中国电力科学研究院有限公司 | 一种多端交直流混合配电网直流高阻故障检测方法和装置 |
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2019
- 2019-08-20 CN CN201910769702.9A patent/CN110429572B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6392422B1 (en) * | 1997-06-17 | 2002-05-21 | Dip.-Ing. Walther Bender Gmbh & Co. Kg | Monitoring insulation and fault current in an A/C current network to provide load shutoff whenever differential current exceeds a certain response value |
CN107681641A (zh) * | 2017-08-01 | 2018-02-09 | 华北电力大学 | 基于直流电抗器电压的多端柔性直流电网边界保护方法 |
CN108469576A (zh) * | 2018-04-20 | 2018-08-31 | 中国科学院电工研究所 | 一种多端交直流混合配电网直流故障检测方法 |
CN109188188A (zh) * | 2018-07-10 | 2019-01-11 | 国网浙江省电力有限公司杭州供电公司 | 基于电压监控的多端柔性直流输电线路故障单端判别方法 |
CN109839570A (zh) * | 2019-03-07 | 2019-06-04 | 中国电力科学研究院有限公司 | 一种多端交直流混合配电网直流高阻故障检测方法和装置 |
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