750 kV transmission line withO long lines, high tower, equipment complexity, high reliability characteristics is required. Because of these characteristics, and now the regular inspection and maintenance of the traditional approach has been difficult to apply. A new online testing technology: UV imaging technology, through the relevant test, on the 750 kV transmission lines and related equipment for corona discharge test. And test the form of videos and photos to do a detailed record, combined with the test results and related theoretical knowledge to analyze the corona discharge. Finally, the conductor explained, grading ring , grading ball, spacers, damper, high-voltage insulators and fittings and other possible causes of corona discharge devices are presented. Would like to draw attention, and thus are contributed to the state after the maintenance work carried out smoothly.%750 kV输电线路具有:线路长、铁塔高、设备复杂、运行可靠性要求高等特点.由于这些特点,现在传统的定期检查及维修方法已经很难适用了.利用一种新型的在线测试技术-紫外成像技术,通过相关试验后,对750 kV输电线路及设备进行了相关电晕放电测试,并试验录像及照片的形式做了详细的记录.结合测试结果及相关理论知识对其电晕放电作出分析.最后阐述了导线、均压环、均压球、间隔棒、防震锤、绝缘子及其金具等高压设备电晕放电的可能原因.希望能由此引起重视,并以此促成以后的状态检修工作的顺利开展.
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