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DL—1型合成绝缘子检测仪现场测试分析 被引量:14
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作者 程养春 李成榕 +3 位作者 王晓刚 伍国兴 陈勉 陈润华 《高电压技术》 EI CAS CSCD 北大核心 2003年第5期42-44,共3页
用 DL— 1型合成绝缘子检测仪 (根据电场畸变原理 )和 AGEMA5 70红外成像仪 (根据红外成像原理 )现场实测了运行中疑似有缺陷的合成绝缘子 ,对比分析了二者的测量结果 ,并将从线路上拆下的疑似缺陷绝缘子作测量分析 ,结果表明 :绝缘子... 用 DL— 1型合成绝缘子检测仪 (根据电场畸变原理 )和 AGEMA5 70红外成像仪 (根据红外成像原理 )现场实测了运行中疑似有缺陷的合成绝缘子 ,对比分析了二者的测量结果 ,并将从线路上拆下的疑似缺陷绝缘子作测量分析 ,结果表明 :绝缘子缺陷位置与异常发热点位置及电场畸变位置对应相关 ,两种检测设备的检测结果一致 ,即 DL— 展开更多
关键词 DL-1型 合成绝缘子检测仪 现场测试分析 电场畸变原理 红外成像仪
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Optimizing data for electrical resistivity tomography in hardened sites through the ratio method
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作者 Jiang Fuyu Gao Likun +2 位作者 Chen Haijun Ni Jiong Li Fuqiang 《Journal of Southeast University(English Edition)》 EI CAS 2024年第4期372-385,共14页
To reduce the shielding effect of hardened layers on electrical resistivity tomography,a ratio method based on the distortion correction principle and the isolation coefficient is proposed.The effects of the resistivi... To reduce the shielding effect of hardened layers on electrical resistivity tomography,a ratio method based on the distortion correction principle and the isolation coefficient is proposed.The effects of the resistivity and thickness of hardened concrete layers on the detection of target objects are explored.Both numerical simulations and indoor tank tests indicate that when the ratio method is employed to correct the original collected data,the maximum allowable error for the isolation coefficient should not exceed 1%.Notably,when the ratio of hardened layer thickness to electrode spacing does not exceed 1,correction through this method significantly enhances the recognition capability of target objects.However,when the hardened layer thickness is greater than the electrode spacing by a factor of 2 or more,the ratio method cannot achieve satisfactory results.The case study of flood control engineering detection in the Zhangxi section of the Huangpen River in Dongzhi County demonstrates that the detection effect after correction by the ratio method is comparable to that for the adjacent unhardened pavement,and the influence of the hardened layer is obviously weakened,resulting in more reliable results. 展开更多
关键词 ratio method resistivity tomography hardened site distortion principle data optimization
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