Influence of Ground Potential Rise on Recloser Control Broad in Distribution Lines

This paper presents the numerical analysis method of current distribution electromagnetic fields, using grounding and soil structure analysis (CDEGS) software to interpret apparent resistances field measurement result. The steepest descent method is the function of least-square criterion which is adopted to translate and to explain the field measured result. When the ground fault occurs in any location in power system, the zero-sequence fault current will return to the power system grounded sources through the earth. They make gradient potential and ground potential rise (GPR) in the vicinity ground source. When the GPR is high, it produces shocks and makes damage to equipments. Which they have affected the stability and reliability of distribution lines during operation. So, it is essential to study and to analyze for the influence of GPR. This study has been simulated and evaluated the GPR by using CDEGS software.