金属氧化物避雷器监测装置现场校准技术研究

On-site Calibration Technology of MOA Monitoring Devices

针对金属氧化物避雷器在线监测装置难以在不停电状态下开展现场校准的问题,提出了一种对泄漏电流置空后再注入标准信号的现场校准方法。对相关校准的特征量值展开分析,并通过电路仿真及频率波动对相位影响的研究,研制了氧化锌避雷器在线监测装置现场计量标准。试验结果表明文中提出的方法及计量标准可对准确度为1%及以上金属氧化物避雷器在线监测装置展开现场校准试验。

Aiming at the problem that the zinc oxide lightning arrester on-site monitoring device is difficult to carry out on-site live calibration, an on-site calibration method with injecting standard leakage current is presented. The corresponding characteristic quantities of the calibration measurement standard for on-site monitoring device of zinc oxide arrester is proposed signals after emptying are through and analysis on effect of frequency fluctuation on phase fluctuation. Experimental results method and measurement standard can be used for on-site calibration of MOA on-site accuracy of 1% or higher analyzed, and the circuit simulation show that the proposed monitoring device with