| 引用本文: | 杨 鹏,吴娅妮,马士聪,杨 景,岑 旭,王军波.±1100 kV特高压直流输电工程直流线路故障重启动过程非故障极换相失败研究[J].电力自动化设备,2016,36(4): |
| YANG Peng,WU Yani,MA Shicong,YANG Jing,CEN Xu,WANG Junbo.Analysis of commutation failure of healthy pole during restart of faulty line for ±1 100 kV UHVDC project[J].Electric Power Automation Equipment,2016,36(4): |
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| 摘要: |
| 研究发现由于 ±1 100 kV特高压直流输电工程直流电压和功率的提升以及换流变短路阻抗的提高，一极直流线路瞬时故障会引发另外一极换相失败。针对该现象进行了研究，分析了实际工程中影响换相失败的主要因素，并逐个进行研究和计算，最后从一次系统参数优化（主要包括换流变短路阻抗优化）和二次控制策略改进（主要包括故障极的重启动策略改进和非故障极在故障极重启动期间的关断角控制策略改进） 2 个角度提出了适用于 ±1 100 kV特高压直流输电工程抵御换相失败的措施。 |
| 关键词: 特高压输电 直流输电 直流线路故障 ± 1100 kV 换相失败 故障分析 |
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| 基金项目:国家电网公司大电网重大专项资助项目课题（SGCC-MPLG001-2012） |
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| Analysis of commutation failure of healthy pole during restart of faulty line for ±1 100 kV UHVDC project |
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YANG Peng1, WU Yani2, MA Shicong2, YANG Jing3, CEN Xu3, WANG Junbo4
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1.China Electric Power Equipment and Technology Co.，Ltd.，Beijing 100052，China;2.China Electric Power Research Institute，Beijing 100192，China;3.State Grid Shandong Electric Power Company Weihai Electric Power Company，Weihai 264200，China;4.State Grid Shandong Electric Power Company Yantai Electric Power Company，Yantai 264001，China
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| Abstract: |
| It is found that，the instantaneous grounding fault of one pole in ±1 100 kV UHVDC project will cause the commutation failure of another pole because of its enhanced DC power／voltage and the increased short circuit impedance of converter transformer，for which，the main influencing factors in practical project are studied and analyzed one by one. Measures against the commutation failure of ± 1100 kV UHVDC project are proposed from two aspects：the parameter optimization of primary system（including the short circuit impedance optimization of converter transformer） and the control strategy improvement of secondary system（including the restart strategy of faulty pole and the extinction angle control strategy of healthy pole during the restart）. |
| Key words: UHV power transmission DC power transmission DC line fault ± 1100 kV commutation failure failure analysis |
