摘要
金属氧化物避雷器(MOA)漏电流中阻性电流可以很好的反应其老化情况。针对MOA阻性电流提取问题,使用调整相位角的方法抵消漏电流中的容性电流成分,从而获得MOA阻性电流。研究表明:选择调整相位角抵消容性电流成分的方法可以获得漏电流中阻性电流成分,相比于容性补偿算法计算的阻性电流,其峰值处存在一定误差。同时该方法不需要对电压测量,在没有电压传感器情况下,仅通过测量漏电流,计算出阻性电流,大大方便了检测人员工作,节约了检测、维修成本。
The resistive current from the 1 eakage current of MOA is known to be related to the degradation of the MOA. In order to extract the resistive component from the leakage current, the Modified Shifted Current Method can counteract the capacitive current from the leakage current, and obtain the resistive current from MOA. The study shows that the Modified Shifted Current Method can offset the capacitive current from the leakage current, and obtain the resistive current from MOA, compared with conventional compensation algorithm, there is a certain error in the peak time of calculated resistive current. At the same time, the method have not need to measure the voltage, the new modified shifted current method of extracting resistive current from the MOA, without using voltage transducer, only through the measurement of leakage current, calculate the resistive current. The method is reduced the cost and make the work be convenience for the maintenance staff.
出处
《电瓷避雷器》
CAS
北大核心
2015年第5期115-118,122,共5页
Insulators and Surge Arresters
基金
国家自然科学基金项目(编号:41175003)
江苏高校优势学科建设工程资助项目(PAPD)资助
