Design And Research For Grounding System Of JingGangShan220kV Substation

Along with the development of the power system, due to a lightning strikeaccident is also increasing, especially with the continuous development of powersupply network, as well as the continuous development of national economy, powersupply equipment is more and more to the miniaturization of intelligent development,distribution network grounding resistance is more and more difficult to meet therequirements; Favourable grounding system in the substation is to maintain safe andreliable operation of the power system, to ensure the safety of operators and electricalequipment of the basic guarantee and important means.The reserch status firstly from the concept of power grounding system andexpounds the importance of grounding system in substation, combining the jinggangmountains220kv substation complex geographical condition, high soil resistivity badon-site environmental factors and so on, design and research of the substationgrounding system; Through a detailed prophase investigation and sufficient datacollection to determine our scope of substation grounding and grounding resistance.In this grounding design mainly from reduction of substation groundingresistance,earthing conductor corrosion measures, the numerical calculation method,and the grounding resistance of grounding resistance parameters accuratelymeasuring method four aspects of research.Through the study of the grounding system four aspects, that is suitable forjinggangshan220kv substation grounding systems, the optimal design scheme, in thedesign used in new type grounding device, a new type of drag reduction agent toverify product performance; For later in the design process encounter similar thesubstation environment of the grounding system design have great reference value.