Research On Differential Lightning Protection Technology Of Distribution Lines In Hailar Oilfield

Distribution line is an important part of distribution network in Hailar oilfield.It provides electricity directly for oil field production.It has many characteristics,such as complex branch,low insulation level,poor lightning protection ability and so on.Undoubtedly,it poses a great threat to the safe operation of the current distribution network,and adds a lot of work to the operation and maintenance personnel,which increases the hidden danger to the safe production of the oil field and causes economic loss.In order to ensure the user's demand for electricity,improve the running quality of the power line and enhance the lightning protection performance of the distribution line,it is very important to carry out the research on the differential lightning protection technology of distribution lines.This paper analyzes and studies the strategy of differential lightning protection,compares the application methods of differential lightning protection in transmission lines and distribution lines,analyzes the characteristics of differential lightning protection in distribution lines,and carries out the risk assessment of lightning damage to single distribution lines.Through evaluation,five risk levels of distribution lines are obtained.Ten kinds of lightning protection measures are studied by comparison and analysis.The use of these measures can improve the insulation,dredge the lightning current,reduce the effect of grounding resistance,and make the distribution line achieve the purpose of lightning protection.According to the risk assessment results of distribution lines,a differential lightning protection strategy is formulated,which avoids the unified and unified single technical measures.The lightning protection frame of the distribution line in Hailar oilfield is constructed.Through the implementation of the lightning protection measures,the lightning resistance level is enhanced,the lightning trip fault is greatly reduced,and the supply is improved.Electrical reliability provides guarantee for safe production in Hailar oilfield.