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OACSTPCD
Internal insulation condition evaluation method for capacitor voltage transformer based on fuzzy analysis of error condition
电容式电压互感器(CVT)的内绝缘状态是保证其计量准确性和运行稳定性的关键因素.然而,在长期运行过程中,电老化、热老化以及系统过电压等因素会导致CVT的内绝缘状态出现劣化.针对此问题,文中提出了一种数据驱动的CVT内绝缘状态评价方法.该方法利用高压CVT群体之间的电气连接关系构建CVT误差状态的特征参量,基于CVT误差状态与内绝缘状态的相关性,通过模糊分析方法匹配CVT的误差状态与内绝缘状态,实现了在线评价CVT异常内绝缘状态的异常程度和异常类型.
The internal insulation condition of capacitor voltage transformer(CVT)is a key factor to ensure its measure-ment accuracy and operation stability.However,during the long-term operation,the internal insulation condition of CVT would be degraded by electrical aging,thermal aging and system overvoltage.Aiming at this problem,a data-driven CVT internal insulation condition evolution method is proposed in this paper.This method constructs the feature parameters of error condition 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 error condition of CVTs according to their correlations,therefore,the degree and type of CVT abnormal internal insulation could be evaluated online.
王欢;王忠东;卢树峰;陆子刚;刘俭
中国电力科学研究院有限公司武汉分院,武汉 430074||华中科技大学,武汉 430074国网江苏省电力有限公司营销服务中心,南京 210019中国电力科学研究院有限公司武汉分院,武汉 430074
动力与电气工程
电容式电压互感器误差状态内绝缘状态模糊分析
capacitor voltage transformererror conditioninternal insulation conditionfuzzy analysis
《电测与仪表》 2024 (004)
73-80 / 8
国家电网有限公司科技项目(5600-201918181A-0-0-00)
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