2010•Power System TechnologyRequires access
Research on Electric Field Strength Below Typical 220 kV Overhead Transmission Lines in Shanghai Region
Xinxin Xiao
Open publisher page 0 citations
Abstract
According to concrete condition of Shanghai region,the electric field strengths below various kinds of 220 kV overhead transmission lines,including double 220 kV circuit on the same tower,four 220 kV circuit on the same tower and four 220 kV/110 kV hybrid-circuit on the same tower,under different arrangement of phase sequence are calculated by charge simulation method,while the influence of adjacent UHVAC transmission line on electric field strength below 220 kV transmission line is taken into account.By means of simulation of electric field strengths below various kinds of 220 kV overhead transmission lines with different conditions,the impacts of existing 220 kV overhead transmission lines on environment are evaluated and the adoptable measures to reduce electric field strength are proposed.Besides,the influence of adopting shield wire on electric field strengths below 220 kV overhead transmission line is analyzed and it is pointed out that adopting shield wire can take effect of reducing electric field strengths below overhead transmission line.The calculation results are verified by on-site measured data,and both calculation results and measured results show that at present the electric field strengths below 220 kV overhead transmission lines in Shanghai region will not exceed the specified limit value in specifications.