Study On Electromagnetic Environment Around The High Voltage Transmission Line

With the rapid development of national economy and increasing demand for powersupply, the bottleneck problem of electricity becomes more prominent especially in somedeveloped cities, which cause the following results that site selection of the substation willbe selected close to residential area in order to satisfy the demand for power supply. Atthe same time, people’s living standard is increasing day by day, and the environmentalquality consciousness of the public increase constantly, which makes electromagneticenvironment problems of the construction and the operation of the power grid becomeparticularly outstanding. Therefore, a detailed understanding of the electromagneticenvironment around transmission engineering, not only provides technical support ofreasonable resolution for electromagnetic environment problem, but also lays foundationfor the feasible project suggestions.The electromagnetic parameter of power transmission line include: electrical field,magnetic field, radio interference and audible noise. Based on the100~500kV typicalpower transmission lines as the main research object in this paper, Through monitoring andevaluation to electromagnetic environment of transmission line, the anthor develops a setof electromagnetic environment comprehensive simulation analysis system, and studysthe electromagnetic field, radio interference and audible noise around the transmission lineby means of the comprehensive simulation analysis system in this paper.The electromagnetic environment around500kV transmission line is actuallymeasured and calculated by the comprehensive simulation analysis system. The simulationresults are compared with the measured data, and the calculation results can be depositedin the database to provide convenience for data search and analysis.The distribution rule of electromagnetic environment around transmission line isstudied in different voltage grade, different wire height and different wire arrangement.and then, the distorted electric field is studied. Finally some improvement measures areput forward to solve the overproof problem of potential electromagnetic environmentaround the transmission line.