Construction Research Of In Inner Mongolia Power Plant And Substation Ground Network Design And Research For The Application Of New Material

The rapid growth of urban residents in Inner Mongolia power load to meet therequirements of city electricity load distribution, a growing number of distributionsubstation220kV substation as into the city, this city power station is according to thecharacteristics of the substation area is small,220kV and110kV high-voltage systemUSES GIS combined electrical equipment, with the city electricity consumption andelectricity load increasing, resulting in power plants, substation grounding faultshort-circuit current is bigger and bigger, cause massive short circuit grounding mainequipment and tripping accidents. Power plant and substation in order to reduce the useof grounding resistance for the regulations prohibited use of drag reduction agent, forpower plants, substation buried grounding flat iron corrosion is serious; Combined withthe surrounding soil has high corrosion caused by grounding flat iron corrosion andrupture.Unique geographical environment in Inner Mongolia, Inner Mongolia in the800mabove sea level, is a temperate continental climate. Summer is short, climate changemultiterminal, Frozen winter long; Day and night temperature difference is big, meandifference in more than12℃. Between100-500mm, the average annual rainfall insummer rainfall accounted for60%~70%, land annual evaporation is900~1200mm,belongs to the drought and desertification area. Underground water level in the60~120m. In the topsoil is sandy clay, more lower for sandy gravel or granite, part of the surfacesalinity is more serious.Substation grounding network buried part parcel laying LWG-01type solid dragreduction agent place appear different degree of flat iron bubbling, fall off protectionlayer upon layer to thin, flat iron corrosion phenomenon, even ground fracture, severecorrosion design without considering measures the corrosion of grounding systemslocated in soil, in the ground at the beginning of grounding body design, type selection,corrosion problems, resulting in very severe corrosion. Considering design should havethe service life of the early, substation personnel safety and stability of power grid, thenetwork design, the transformation is very important.Through Inner Mongolia region new wins substation110kV,110kV Xinshengsubstation ground network construction engineering data, through the analysis of soilresistivity design parameters of step potential and contact potential difference, theinfluence degree of the potential difference,220kV substation in Baotou power supplybureau, three power plant in baotou ground net.through anti-corrosion transformationfirst applied in the steel copper plating technique, received a good antiseptic effect, and the reform practice, we found a lot of ground net.through steel copper plating technologynot only in the timeliness of anti-corrosion effect significantly, but also to reduce thegrounding resistance value has certain effects, specific implementation process of coppercoated steel is found that the vertical grounding rods to reduce the substation groundnetwork grounding resistance value to meet the code requirements, prevent counterpoiseagainst accidents, ensure the safe and reliable operation of network, has very importantengineering significance.