Study And Analysis Of Power-frequency Electric Field Caused By EHV Transmission Lines

Recently,our country is heavily developing the high voltage transmission lines,special the EHV and UHV transmission lines,the fast development of the EHV transmission lines bring some troubles,such as radio-interference,corona discharge and electromagnetic environment and so on.The electromagnetic environment perhaps the power-frequency electric field will hurt the human healthy.Through read a lot of domestric and international articles,the article summarizes the EHV transmission lines development state and mainly study the power-frequency electric field of the EHV transmission lines.The article focus discuss the charge simulation method and calcution formula of power-frequency under different charge simulation and test the accuracy of the charge simulation method.Ideal the EHV transmission lines and build the two-dimensional field model.The article analyze model of single-phaseon the same tower and double-phase on the same tower,then derive the power-frequency electric fiend calculation formula.Program and simulize the power-frequency electric field of typical project under different wires setting style with MATLAB language.The simulation analyze the power-frequency electric field curve under different wires setting style,and compare the simulation result and under the environment awareness offer the safe range,which will give some reference views to the transmission designers.Then,the article study and analyse the influence factor of the power-frequency electric field under the last basis,simulation the substract lines setting parameter and wires parameter,focus discuss and simulation the influence factor of the power-frequency electric field under the double-phase on the same tower,offer some improvement measures,which will make guiding significance to the EHV and UHV transmission lines especial when it through the public area.