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摘要
To research distorted electric field of the building near UHV AC transmission lines, a finite element method(FEM) was applied to calculate the distorted electric field produced by 1000 kV AC double circuit transmission lines on the same tower, including the electric field of reinforced building and brick building. Firstly, the calculation model and finite element model of transmission lines with sag, steel frame and air field were established. Then, the electric field of the balcony, the roof and the surrounding area of the steel frame were calculated. UHV AC experiments verified the effectiveness of the calculation method. Finally, the distorted electric field of the reinforced building roof and the brick building roof are researched. In the cases of window opened and closed the electric field of both the balconies and indoors are compared. The results show that FEM can effectively calculate the distorted electric field of the buildings. The electric field of the building edges and building corners are seriously distorted. The electric field of the reinforced building roof and the brick building roof were 10.40 kV/m and 6.02 kV/m, respectively, distorted by 123.61% and 29.18%, respectively. The reinforced building had a stronger shielding effect on indoor electric field than the brick building, and the indoor electric field of the brick building reached 4.82 kV/m; the electric field change of the reinforced building was greater than that of the brick building by opening the window, while the electric field of reinforced building balcony reached 1.95 kV/m from 32.22 mV/m.
- 出版日期2012
- 单位华北电力大学
