外绝缘放电电压校正方法的分析与比较

Analysis and Comparison to Correction Methods of Discharge Voltage of External Insulation

针对电力设备在不同大气条件、不同海拔高度下外绝缘的放电电压,现行国内外标准以及一些研究群体提出了多种校正方法。从校正方法的理论依据、使用条件、校正数值三方面比较了各种方法存在的差异,提出了各自的适宜范围。在工程应用时,应根据电力设备的参数以及安装地的气候特点、海拔条件、安全可靠性要求等,选择一种适宜的校正方法对外绝缘放电电压进行校正。

The current domestic and international standard and some research groups have proposed a variety of correction methods to discharge voltage of external insulation in different atmospheric conditions and at different altitudes. The differences of these methods are compared from the aspects of theoretical basis, conditions of use, and correction values, the application scope of those methods are proposed. In engineering applications, selecting a suitable correction method to correct the discharge voltage of external insulation should based on the parameters of electrical equipment, climate, altitude, safety and reliability requirements and so on.