Study and Discussion on Grounding Methods of Liangang Ⅱ Station
Due to the small grid grounding current,the system grounding method of Li-angang Company adopts the arcing coil plus ungrounding method.In recent years,with the development of the company,the system network has become increasingly complex.When a single-phase ground fault occurs in some areas of the system,undercompensation of the arc-absorbing coil would happen,resulting in a continuous arcing and burning of the faulted cable.Thus,based on the single-phase grounding capacitance current mathematical model,the grounding current of each region is calculated,and the existing arc-absorbing coil com-pensation capacity is accounted for,so as to provide a theoretical basis for the selection of grounding methods for subsequent network development.
grounding methodarcing coilsingle-phase grounding capacitive current
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