地线短路电流及基于异温法的短路热稳定的计算

电力系统的运行经验表明,在各种类型的短路中,单相短路占比例较大.文中基于异温法,结合DL/T 2005《导体和电器选择设计技术规定》等相关规程规范,对龙开口～鲁地拉工程线路发生单相短路时,所选地线（OPGW）的热稳定性进行了计算,并根据计算结果对该工程地线选型提出了优化方案.

Ground Short Circuit Currents and the Thermal Stability Calculation of Short Circuit based on Different Temperature Method

Operation experiences of power system show that, in various types of short circuit, the majority is single phase short circuit. In this paper, based on different temperature method, combined with DL/T 2005＂conductor and elec- trical equipment selection design technology regulations＂ and other relevant regulations, on the Long kaikou-Ludila engi- neering single phase short circuit occurs, thermal stability of the ground wire （OPGW） were calculated, and according to the calculation results, the engineering ground selection optimization scheme was put forward.