Preliminary Design Of Zalute Converter Station To Changling Transformation 500kV Line(Jilin Province Section)

With the further enhancement of the power grid in east Mongolia,especially in Tongliao region,during the 13 th five-year plan period,the 220 kV power grid in jilin province will be disassembled and operated with the power grid in Tongliao region.If we consider the big way in winter,there will be less spares of thermal power generating units in the province and the output of wind power generating units will be 6%.It is estimated that Jilin province will have about 9300 MW more power by 2018.Combination between black ji between provinces and in Liaoning province is currently running transmission capacity requirements(black channel transmission capacity of 3000 mw between provinces,channel between the transmission capacity of 4000 mw)in Liaoning province,at the same time,considering the affection thermal stability limit sing-an ~ sweet water circuit(conductor cross section of 4 x 400 mm2,ambient temperature of 30 ? line thermal stability limit is 2614 mw,while on the basis of the above power exchange channel capacity,Jilin surplus power sent out about 3600 mw,the most can't meet the needs of the province actual power sent out,need a new power transmission channel,alleviate the pressure of the power grid operation.This paper makes a preliminary design of the 500 kV line project from zarut converter station to changling transformer station(jilin province section).Firstly expounds the background and significance of topic selection,research analysis of domestic and foreign development of transmission line design,and then by comparing alternative path analysis,choice of the final circuit path towards,again according to the line along the path to the meteorological conditions for the final analysis,to guide ground,insulator,hardware type selection design of final project preliminary design work.The construction of this project will improve the export capacity of surplus power in jilin province,strengthen the network structure of zarlute converter station,facilitate the collection of surplus power,strengthen the power grid structure of baicheng and songyuan areas,and alleviate the pressure of regional export,which has a very important construction significance.