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首页> 外文会议>Automation Congress Proceedings, 2008 World >The power frequency electrical field on EHV AC transmission lines under corona discharge conditions
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The power frequency electrical field on EHV AC transmission lines under corona discharge conditions

机译：电晕放电条件下超高压交流输电线路的工频电场

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摘要

A method to calculate power frequency electrical field considering the charges caused by corona discharge around EHV (Extra-High Voltage) AC (Alternating Current) transmission lines is presented in this paper. The corona occurs when the electrical field intensity in the vicinity of the transmission lines exceeds the critical breakdown strength of air. To research the corona influence on the power electrical field, the charge simulation method and superposition principle are used to establish the computation model under this condition. Through the simulation, it is known that, due to the corona discharge, the electrical field is distorted, and the distribution curve periodically changes in time domain. As corona discharge enhances the power frequency electrical filed, the calculation model in the State Environmental Protection Administration standards in our country needs to be amended from the practical view.
机译：提出了一种考虑超高压交流输电线路周围电晕放电引起的电荷的工频电场计算方法。当传输线附近的电场强度超过空气的临界击穿强度时，就会发生电晕。为了研究电晕对电源电场的影响，采用电荷模拟方法和叠加原理建立了该条件下的计算模型。通过模拟可知，由于电晕放电，电场发生畸变，分布曲线在时域周期性变化。随着电晕放电增强了工频电领域，我国从国家环保总局的标准计算模型需要从实际角度进行修正。

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