Research On The Technology And Application Of10KV Distribution Network Neutral Grounding Through Small Resistance

Paper based on the current, taking into account the long-term, describes thedistribution network system neutral grounding modes of classification andcharacteristics, as well as research and application of10kV distribution networkabroad neutral grounding method. Meanwhile, the national network developmentstatus of Jiangxi power distribution grid in the background, in-depth analysis of thedistribution network fault conditions to determine the topic of this paper is10kVdistribution network neutral grounding modes of research and application.Accordingly, in line with the purpose of solving practical problems, research anddata collection in full, based on the chosen country network Nanchang, JiangxiPower Company (the capital city) distribution network for the study, select arepresentative10kV Neutral by small substation grounding resistor directly (110kVsubstation Taohuawu), combined with integrated automation substation renovation,design neutral point directly to ground via low resistance programs (including10kVneutral grounding via low resistance of the structure, grounding transformers, neutralgrounding device, neutral grounding resistor through the scope), to carry outprojects and equipment commissioning program implementation, summarizesoperating experience (including changes before grounding grounding, faultconditions; reconstruction after the grounding and fault conditions, etc.), thecost-effectiveness analysis.