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电网技术  2012 

2011年西北电网风机脱网事故分析及启示

, PP. 76-80

Keywords: 西北电网风电,风机脱网,安全稳定,防御措施

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Abstract:

2011年2月24日,连接甘肃第一风电场的桥西变35kV设备故障,由于风电机组不具备低电压穿越能力以及风电场无功补偿装置缺乏快速自动调整能力,事故期间脱网风机共计598台,风电出力损失837.34MW。详细介绍了事故前西北电网的运行情况,事故发生、发展和恢复过程,并通过仿真计算复现事故过程。总结了事故的经验和教训,提出加强继电保护装置的维护力度、提高风电机组低电压穿越能力、加强风电场无功补偿设备改造与管理、规范风电机组高电压运行要求,以及35kV馈线单相故障后直接跳闸的建议,防止类似事故再次发生,保障我国电网的安全稳定运行。

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