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作 者:李阳林[1] 周友武[1] 刘箐 饶斌斌[1] 李升健[1]
机构地区:[1]国网江西省电力科学研究院,江西南昌330096 [2]江西赣州供电公司,江西赣州341000
出 处:《水电能源科学》2015年第7期188-191,共4页Water Resources and Power
摘 要:当输电线路发生单相高阻接地故障时,由于故障特征量不明显,故障测距误差大,输电线路故障分析与查找较困难。针对220kV输电线路发生的2次不明原因高阻接地故障跳闸,应用电力系统全数字实时仿真装置进行电磁暂态—机电暂态混合仿真分析,一方面验证了保护动作行为的正确性,另一方面通过对比不同故障位置的仿真波形,确定了故障大致位置,结合现场巡视,最终确定了故障原因,并提出了相应的防范措施,有效杜绝了类似故障的重复发生。When transmission line happens the event of single-phase high resistance ground fault, because the fault feature is not obvious and the fault location error is large, the detection and analysis of transmission line fault is more dif ficult. Based on unknown causes of 2 times trip of high resistance ground fault in 220 kV transmission line, the advanced digital power system simulator (ADPSS) is used to analyze the hybrid simulation of electromagnetic transient and electro- mechanical transient. On the one hand, it verifies the correctness of protection action. On the other hand, according to the characteristics of different fault location, the fault position is identified approximately. According to the scene patrol, the fault reasons are determined, and some corresponding preventive measures are put forward, which prevent the similar faults effectively.
关 键 词:输电线路 高阻接地故障 不明原因 树竹放电 仿真分析
分 类 号:TM74[电气工程—电力系统及自动化]
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