With regards to FCL terminal fault and short-line fault in power transmission lines installed with inductive FCL, mathematical formula are presented, based on theoretical analysis and deduction, to properly describe the relationship .

With regards to FCL terminal fault and short-line fault in power transmission lines installed with serial-resonant FCL,the influence of current limiting inductance and its parallel stray capacitance on interrupting fault current,the first peak valve of transient recovery voltage and rate of rise of transient recovery voltage of circuit breakers are analyzed.

This paper describes a series of faults,about 110 kV line three-phase short line fault,integrated automation system failure and breaks trip-out,caused by lightning strike in Gantang substation.

Introduction to calculation of recovery voltage in short line fault(SLF) and theoretical analysis of the interrupter in various arcing time.

Combined with the example of ELMIS terminal malfunction disposal in Panzhihua electric power bureau, the article analyzes the common terminal malfunction.

Based on the end fault and the multiple faults in distribution network, a new improved interphase fault section location and isolation criterion is put forward, by which not only the simple faults can be located, but also the end faults and the multiple faults can be quickly located.