华电技术 ›› 2011, Vol. 33 ›› Issue (8): 27-29.
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王东亚, 林韶明
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WANG Dongya,LIN Shaoming
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摘要: 广东珠海金湾发电有限公司电机变压器组保护装置在进行G60装置试验时,发现装置所配置的“500kV开关断开全停”保护误动作。经过深入分析认为,发电机变压器组保护装置保护误动作是产生故障的主要原因,提出了保护逻辑的改进方法,避免了保护误动作再次发生,消除了发电机变压器组保护的重大隐患。
关键词: 发电机变压器组, 保护误动作, G60装置, 原因分析, 保护逻辑改进
Abstract: In the Guangdong Zhuhai Jinwan Power Generation Company Limited, during the test of the generatortransformer unit protection device G60, it was found that the protection 'all stopping when 500kV switch tripped' configured in the protection device acted incorrectly. Based on indepth analysis, it was considered that the main reason of the fault is the malfunction of the generatortransformer unit protection device. The improvement method of the protection logic was put forward; the protection malfunction happening again was avoided, and a serious hidden danger of the generatortransformer unit protection device was eliminated.
Key words: generator-transformer unit, malfunction of protection, G60 device, reason analysis, improvement of protective logic
王东亚;林韶明. 3/2接线方式下“500kV开关断开全停”保护误动分析与改进[J]. 华电技术, 2011, 33(8): 27-29.
WANG Dongya;LIN Shaoming. Analysis and improvement of malfunction of protection 'all stopping when 500kV switch tripped' under 3/2 connection mode[J]. Huadian Technology, 2011, 33(8): 27-29.
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