Design Of 110KV Overhead Transmission Line In Weinan Huaihai

The grid structure is very weak in the west area of Junan county,there is no transformer substation at present,the power supply only through 110 kV Luzhen substation and 35 kV North City substation.The substation has run full load,the three10 kV lines have problems that the lines exceed the power supply radius and are with full load in five 10 kV lines,and the electricity load is with a terminal of 10 kV line in 110 kV road town substation and 35 kV north substation,there has been a phenomenon of overload operation.According to the load forecast,the load will grow rapidly in two years,the existing substation has been difficult to meet the demand for power in 2016.In order to meet the rapid growth of Huaihai area load demand,according to the Linyi power grid "outlook 12 th Five-Year" plan and the 2020 Vision(2012 edition),the plan of Junan Huaihai 110 kV power transmission project is implemented in 2016.The110 kV into the line 2 times in the current period which from 220 kV Tianma station.Substation location is determined in the northwest corner of the intersection of the Huaihai road and the No.1 industry road in the Junan county,with land use planning.According to the location of Huaihai station and the development plan of Linyi city power grid,2 sets of 63 MVA double winding on-load voltage regulating transformers are installed in the current period;the 110 kV into the line 2 times,the inside bridge connection is expanded;the 10 kV out the line 24 times,the single bus three subsection connection mode is adopted.The project which is put into operation mainly meets the needs the load growth of Junan Huaihai project area,and realizes the "hand in hand" power supply city 10 kV line,improves the reliability of power supply.110kV Huaihai transmission project is divided into three parts,the first part is the interval adjustment of Tianma station,the second part is the double circuit installation of existing spare tower;the third part is the new double circuit lines in Huaihai station.Full length is 2.1km,in which the new double back and double side wire line is 0.42 km,and use the existing spare double back overhead line 1.68 km.After the project is smoothly operated,it reduces the pressure on the local electricity power,meets the needs of people’s production and life,and provides a powerful engine for industrial and agricultural development.