| 引用本文: | 李祝昆,朱益华,徐海波,陈汹,李雪明.适应安全稳定控制的双端柔性直流输电系统故障闭锁判据研究[J].电力系统保护与控制,2018,46(11):145-155.[点击复制] |
| LI Zhukun,ZHU Yihua,XU Haibo,CHEN Xiong,LI Xueming.Research on fault blocking criteria of two-terminal VSC-HVDC transmission system adapting to safety and stability control[J].Power System Protection and Control,2018,46(11):145-155[点击复制] |
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| 摘要: |
| 大容量柔性直流故障闭锁后的功率突变将对电网的安全稳定运行造成重大影响。由于柔性直流控制保护系统一体化的工程现状，且控制保护相关技术参数并未对外公布，以基于鲁西柔性直流仿真系统搭配实际控制保护系统对故障下电气特征进行研究。提出适应安全稳定控制的柔性直流系统联接变阀侧单相接地、相间短路、相间接地、三相接地、直流线路正极接地、负极接地、极间短路及无故障跳闸的判据，并在RTDS仿真系统中进行了验证。结果表明:所提判据能准确识别双端柔性直流系统故障状态，具有较好的工程实用性。 |
| 关键词: 安全稳定控制 柔性直流输电 故障闭锁判据 无故障跳闸 |
| DOI：10.7667/PSPC170754 |
| 投稿时间：2017-05-19修订日期：2017-07-28 |
| 基金项目:国家电网公司科技项目“±500 kV柔性直流电网运行特性与控制技术研究” |
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| Research on fault blocking criteria of two-terminal VSC-HVDC transmission system adapting to safety and stability control |
| LI Zhukun,ZHU Yihua,XU Haibo,CHEN Xiong,LI Xueming |
| (NARI Technology Development Limited Company, Nanjing 210003, China;Key Laboratory of Power System Simulation, Electric Power Research Institute of China Southern Power Grid, Guangzhou 510080, China) |
| Abstract: |
| The sudden change of power after large capacity flexible DC fault blocking will have a significant impact on the safe and stable operation of power grid. Because of the integration of flexible DC control and protection system, and the related technical parameters not being disclosed, study of fault electrical characteristics is based on Luxi flexible DC simulation system collocation with actual control and protection system. And then this paper proposes the criterions of single-phase grounding, phase to phase short circuit, phase to phase grounding, three-phase grounding, the positive and negative terminal grounding of the DC circuit, pole-to-pole short circuit fault and no fault tripping of valve side in converter transformer of VSC-HVDC system adapting to the security and stability control, and validates them in the RTDS simulation system. The results show that the proposed criterions can accurately identify the fault state of the two-terminal VSC-HVDC transmission system, so it has better engineering practicability. This work is supported by Science and Technology Project of State Grid Corporation of China “Research on Operation Characteristics and Control Technologies for ±500 kV VSC-HVDC System”. |
| Key words: safety and stability control VSC-HVDC fault blocking criterion non-fault tripping |
