提出一种应用数学形态学的方法对现场信号进行消噪处理,对消噪后的信号,利用信号的相关分析推算出阻性基波泄漏电流。有效提高了金属氧化物避雷器泄漏电流的测试准确度,确保设备故障诊断的有效性和可靠性,仿真表明:与传统方法相比,数学形态学方法不仅能从噪声中准确提取待测泄漏电流信号,同时又可真实复现泄漏电流信号中的劣化特征,对设备的早期故障诊断具有重要意义。
蔡晓波, 石佳, 陈小毓
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