摘要
针对某钢铁厂10kV配出线因小动物而发生跳闸的事故,根据故障录波图形和保护定值分析由单相接地故障发展到三相短路的过程,并通过手动计算出三相短路电流的大小和变化规律,使得短路理论计算和实际相结合,为现场人员熟练掌握短路计算提供借鉴。
For the accident that a 10 kV distribution line of a steel plant tripped due to a small animal, the development process from a single-pahse grounding fault to a three-phase short circuit is ananlyzed according to the fault recording graph and the protection setting value. Through the manual calculation of the magnitude and change rule of the three-phase short circuit current, the theoretical calculation of the short circuit is combined with the actual values, providing reference for the field personnel to master the short circuit calculation.
作者
任立新
REN Lixin(Shougang Jingtang United Iron & Steel Co. , Ltd. , Tangshan 063200, China)
出处
《电工技术》
2019年第17期60-62,共3页
Electric Engineering
关键词
钢铁厂
录波
短路
steel plant
wave recording
short circuit
