摘要
采用带电检测氧化锌避雷器(MOA)的方法,现场采集MOA的电压和总泄漏电流信号,然后由阻性电流提取算法软件计算得到MOA的阻性电流,以此可判断MOA在系统中的运行状况。详细介绍了阻性电流提取算法的实现过程,在算法中采取了多种抑制干扰(如频率波动、谐波影响、电压互感器相移和相间杂散电容等)的措施,最后通过实际测量验证了此算法的可行性和实用性。
The operation condition of metal oxide surge arrester （MOA） h system can be judged by using the hotline detection method, which collects the voltage and leak current signal of MOA on the spot, then calculates the resistance current of MOA by extraction algorithm software of resistance current. The course of realizing the extraction algorithm of resistance current were introduced h detail, and the various measures h the extraction algorithm for restraining disturbances （such as frequency fluctuation, harmonic influence, voltage transformer, phase shift and stray capacitance in phases） were adopted. Finally, the feasibility and the practicality of this algorithm through the actual measurement are verified.
出处
《电力设备》
2006年第2期61-63,共3页
Electrical Equipment
关键词
氧化锌避雷器
带电检测
阻性电流
供用电
metal oxide surge at＇rester
hotline detection
resistance current
power supply and consumption
