中压电力电缆状态检测技术及应用

目前,在中压电力电缆状态监测与检测过程中,水树评价与评估方法相关经验不足和积累数据缺失.基于此分析不同程度开展的破坏性检测、非破坏性检测、在线监测、非电量分析法等各自的优势与缺点,提出了状态监测与检测新技术,实践应用红外诊断、在线局放、阻尼振荡波状态检测、超低频介损测试及新型传感监测技术的优势,可用于实时监测并分析中压电缆及附件设备的局部放电的状态,使得检测结果更为可靠,较好地弥补了现有中压交联电缆绝缘性能监测手段存在的局限和不足.

Medium Voltage Power Cable State Detection Technology and Application

At present, water tree based evaluation methods used for medium voltage power cable condition monitoring and testing are inexperienced and lack of accumulated data. Therefore, the analyses, such as destructive testing, non-destructive detection, on-line monitoring, and non-electricity analysis derived from are naturally with disadvantages. For coupling with these disadvantages, a new technology of condition monitoring and testing is proposed with the utilizations of infrared diagnosis, online partial discharge, damped oscillation wave status online detection, ultra-low frequency dielectric loss test and new sensing monitoring technology. The proposed technology can be used for real-time monitoring and analysis of partial discharge of medium voltage cable and accessory equipment, which can obtain a more reliable result.