Study On Earth Compositive Electrical Field Of Parallel Ac And Dc Transmission Line

With the shortage of the resources of transmission corridors, setting up the special high-voltage direct current lines and special high-voltage Alternating current lines parallel transmission is inevitable. It is very important to determine the distance between the AC line and DC line by studying the field intensity of the surface of the land under AC and DC parallel transmission lines. The software MATLAB is used to calculate the ground electric field by programming and taking the effects of inter-wire AC and DC into account fully.For the AC line, charge equivalent method is used to calculate a nominal electric field of the ground; For the DC line with the halo effect, using the method of Deutsch assumptions to calculate the ground synthesis electric field method. On this basis, this paper further explores the influencing factors of the ground electric field from the AC-DC close to the distance and the height of AC Transmission Lines to the ground two factorsResearch of superposition of electric field distribution on the surface of the land under AC and DC parallel transmission lines, for the choice of AC-DC parallel transmission the corridor provides the basis for reference. For AC-DC parallel transmission construction In line with the electric field and magnetic field standards also provides an effective data. With a detailed study, Research on Superposition of electric field distribution and factors will become more and more comprehensive.