王欢,王忠东,卢树峰,陆子刚,刘俭.基于误差状态模糊分析的电容式电压互感器内绝缘状态评价方法[J].电测与仪表,2024,61(4):73-80. WANG Huan,WANG Zhong-dong,LU Shu-feng,LU Zi-gang,LIU Jian.Internal insulation condition evaluation method for capacitor voltage transformer based on measurement error fuzzy analysis[J].Electrical Measurement & Instrumentation,2024,61(4):73-80.
基于误差状态模糊分析的电容式电压互感器内绝缘状态评价方法
Internal insulation condition evaluation method for capacitor voltage transformer based on measurement error fuzzy analysis
The internal insulation condition is a key factor to ensure its measurement accuracy and operation stability. However, during the long-term operation, the internal insulation condition would be degradation caused by electrical aging, thermal aging and system overvoltage. Aiming at this problem, a data-driven CVT internal insulation condition identification method is proposed in this paper. This method construct the measurement error feature parameters based on the electrical connection relationship between the high-voltage CVT groups, and the fuzzy analysis is utilized to match the internal insulation condition and measurement error condition of CVTs according to their correlations, then the degree and type of abnormal internal insulation could be evaluated online.
