| 引用本文: | 邬乾晋,周全,黄义隆,等.高压直流典型线路雷击故障的控制保护响应研究[J].电力系统保护与控制,2014,42(20):140-145.[点击复制] |
| WU Qian-jin,ZHOU Quan,HUANG Yi-long,et al.Research of HVDC control and protection response for lightning stroke failures occurred in transmission lines[J].Power System Protection and Control,2014,42(20):140-145[点击复制] |
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| 高压直流典型线路雷击故障的控制保护响应研究 |
| 邬乾晋,周全,黄义隆,杨光源 |
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| (中国南方电网超高压输电公司检修试验中心，广东 广州 510663) |
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| 摘要: |
| 随着糯扎渡和溪洛渡直流工程的陆续投运，南方电网“强直弱交”的格局越来越明显，直流线路故障特别是雷击引起的故障导致的直流系统闭锁严重影响着南方电网的安全稳定运行。选取南方电网所辖直流工程2013年发生的三次典型直流线路遭受雷击故障致直流闭锁的事件，剖析了电弧未熄灭、绝缘强度未恢复、连续遭受雷击等不同情况下的直流控制保护响应，得到线路故障重启逻辑中去游离时间和故障计数模块窗口时间设置的不足。提出了线路故障情况下避免直流不必要闭锁停运的建议。 |
| 关键词: 直流输电 雷击 线路故障 闭锁 控制保护 |
| DOI：10.7667/j.issn.1674-3415.2014.20.024 |
| 投稿时间：2013-12-23 |
| 基金项目: |
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| Research of HVDC control and protection response for lightning stroke failures occurred in transmission lines |
| WU Qian-jin,ZHOU Quan,HUANG Yi-long,YANG Guang-yuan |
| (China Southern Power Grid EHV Maintenance & Test Center, Guangzhou 510663, China) |
| Abstract: |
| The feature of strong DC system and weak AC system in the CSPG becomes more obvious after Nuozhadu and Xiluodu HVDC system was put into operation. Transmission line fault, especially HVDC system block caused by lightning stroke fault impacts the safety and stability of power network for CSPG. This paper selects three typical lightning stroke fault which led to HVDC block in CSPG in 2013 to analyze response strategy of control and protection logic in different cases such as arc is not extinguished, dielectric strength is not restored, and transmission line is struck by lighting continuously. It points out the shortage of deionization time and the set time of fault counter. Finally, it suggests to avoid unnecessary HVDC system outage. |
| Key words: DC transmission line lightning stroke line fault block control and protection |
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