Simulation and analysis for power frequency electric field of building close to power transmission lines

Based on the design demands of the 330kV overhead transmission lines, the power frequency electric field for the power transmission lines near and over the building is simulated and analyzed in this paper. The 3-dimentional (3D) Finite Element Method (FEM) is employed to analyze the distribution of the electric field at the level of 1.5m above the ground around and inside a typical building model. The influences on electric field distribution of building located near and under the line are considered. A three-floor building model, which can be constructed with different materials, is proposed. The computational results show the shielding effect on the electric field distribution of the building and large electric field distortion near the outline of the building. The influence on the electric field intensity of the material of the building, the transmission line height, the number of the floors and the orientation of the window is respectively discussed, which can provide important references for the design and construction of the power transmission lines.