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电网技术  2006 

直流复合绝缘子长期老化试验结果分析

, PP. 109-111

Keywords: 直流复合绝缘子,硅橡胶,长期老化性能,泄露电流,憎水性

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Abstract:

通过5000h加速老化试验对±500kV直流复合绝缘子的长期老化性能进行了评估,介绍了试验程序,通过复合绝缘子泄漏电流的变化、憎水性的变化以及绝缘子表面材料的烧蚀情况研究了绝缘子老化性能。在老化试验中,憎水性丧失和恢复过程与实际运行情况一致,材料表面烧蚀情况较轻,说明配方经过优化设计的硅橡胶伞套在直流条件下具有优异的长期老化性能。

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