Gaoya dianqi, 2013 为了解决高压套管现场检测手段有限、诊断准确性差的问题,改善目前高压套管事故多发的现状,采用新型无损检测方法对高压套管绝缘老化和受潮状态进行评估,对提高高压套管的运行可靠性具有重要意义。笔者采用基于介电响应理论的频域介电谱法（FDS）,对3支结构相同的油纸绝缘高压套管在不同温度、含水量以及热老化时间下FDS测试的介损频率曲线进行了对比和分析,通过0.011 000 Hz频段的FDS测试的介损频率曲线来评估套管纸绝缘的含水量。研究结果表明,FDS测量的套管介损频率曲线受温度、含水量和老化时间等因素的影响 ...
杜振波, 聂德鑫, 张连星, 刘诣
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Gaoya dianqi, 2019 针对绝缘子老化测试或变电站在役GIS绝缘子绝缘状态评价的问题,研究一种GIS绝缘子介质损耗测试方法颇为重要。文中开发了一种基于电流比较仪式电桥的介质损耗测试装置,对全新和服役五年的绝缘子进行了电容和介质损耗测试,并对同类新品和运行抽检绝缘子进行了性能测试和试验验证。结果表明:电流比较仪式电桥具有较高的精度,该测试系统的介质损耗测量误差在2%以内,可以保证测试结果的有效性;全新绝缘子具有良好的电气绝缘性能,电容和介质损耗的测试结果无变化,多年服役绝缘子介质损耗值与全新绝缘子相比变化明显 ...
王增彬 +5 more
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