| 引用本文: | 孙栩,王华伟,雷霄,赵兵,王姗姗.架空线柔性直流电网的直流短路电流限制研究[J].电力自动化设备,2017,37(2): |
| SUN Xu,WANG Huawei,LEI Xiao,ZHAO Bing,WANG Shanshan.Restriction of DC short circuit current for overhead lines of flexible DC grid[J].Electric Power Automation Equipment,2017,37(2): |
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| 摘要: |
| 建立了± 500 kV架空线柔性直流电网的电磁暂态仿真模型，较为详细地计算、分析、比较了极间短路等严重故障下的短路电流与换流站闭锁时间。研究结果表明，合理地配置限流电抗器是限制短路电流、防止多个换流站闭锁的有效手段。研究了限流电抗器的配置方案以及改进的限流措施，使得站外直流线路故障不会造成任何换流站闭锁，满足设计与运行的要求。 |
| 关键词: 架空线 柔性直流电网 短路电流 限流电抗器 换流站 闭锁 |
| DOI：10.16081/j.issn.1006-6047.2017.02.033 |
| 分类号:TM713 |
| 基金项目: |
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| Restriction of DC short circuit current for overhead lines of flexible DC grid |
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SUN Xu, WANG Huawei, LEI Xiao, ZHAO Bing, WANG Shanshan
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China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| An electromagnetic transient simulation model of flexible DC grid with ± 500 kV overhead lines is built and the short circuit current and blocking time of converter station are calculated, analyzed and compared in detail for serious pole-to-pole short circuit faults. Results show that the rational configuration of current-limiting inductors is an effective method to restrain the short circuit currents and prevent the blocking of multiple converter stations. The current-limiting inductor configuration schemes and the improved current-limiting measurements are studied to avoid the converter station blocking due to out-station DC line faults, meeting the requirements of design and operation. |
| Key words: overhead line flexible DC grid short circuit currents current-limiting inductor converter station blocking |
