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This paper discusses electric field under overhead lines with a nearby building. Surface charge method is used. Planer triangle surface charge element is chosen. Electric potential and electric field strength produced by a planer triangle surface charge are presented. And analytical expression is deduced. Then electric field of 220kV double circuit overhead lines with a nearby building is calculated...
This paper discusses influence of sloping ground on electric field under overhead lines. Sloping ground is first transformed into flat ground by use of conformal mapping. Then the analytical expression of electric field is obtained by mirror method. The calculation method of electric field with sloping ground is verified by an example with analytical result. At last, electric field under overhead...
High voltage overhead lines produce intense electric field and induce current in human body which may be hazard to human health. To study electric field of overhead lines and human body, a mixed method utilizing both finite element method and surface charge method is first presented. It can be used to complex structure and open domain. Merged matrix equation is deduced and an example of electric field...
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