CAJ | 학술논문

户外运行绝缘子串的泄漏电流监测需要考虑环境温湿度及污秽度的影响. 在绝缘子户外试验场进行了大量人工污秽试验, 连续观测了110 kV XP-160绝缘子串在一个或多个自然日的泄漏电流幅值变化规律. 研究了不同灰密( NS-DD)、盐密( ESDD)对绝缘子串泄漏电流幅值的影响及其与相对湿度、环境温度的关系, 得到了泄漏电流幅值与相对湿度及污秽度的定量关系. 研究结果表明: 在相对湿度较小的情况下, 随着污秽度的增加, 泄漏电流会缓慢增加, 但增长幅度并不明显; 当相对湿度较大时, 随着污秽度的增加, 泄漏电流幅值会明显增大.
호외운행절연자천적설루전류감측수요고필배경온습도급오예도적영향. 재절연자호외시험장진행료대량인공오예시험, 련속관측료110 kV XP-160절연자천재일개혹다개자연일적설루전류폭치변화규률. 연구료불동회밀( NS-DD)、 염밀( ESDD)대절연자천설루전류폭치적영향급기여상대습도、 배경온도적관계, 득도료설루전류폭치여상대습도급오예도적정량관계. 연구결과표명: 재상대습도교소적정황하, 수착오예도적증가, 설루전류회완만증가, 단증장폭도병불명현; 당상대습도교대시, 수착오예도적증가, 설루전류폭치회명현증대.
To monitor the leakage current of outdoor insulator strings in operation, it is needed to consider the impact of temperature, humidity and contamination degree of the strings. A large number of artificial contamination experiments of 110 kV XP-160 insulator strings in outdoor insulator test field are performed, and leakage currents of 110 kV XP-160 insulator strings in one or several days are observed successively, The relationship between the leakage current and relative humidity and temperature under different ESDD and NSDD of insulator surface is researched, and the quantitative relationship of leakage current with relative humidity and contamination is obtained. The research results show that leakage current will rise slowly with aggravating contamination degree when relative humidity is relatively low, while it will rise rapidly when relative humidity is relatively high.