| 高压直流支柱绝缘子电化学腐蚀试验研究 |
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| 引用本文： | 王烜,曹晓珑,徐曼. 高压直流支柱绝缘子电化学腐蚀试验研究[J]. 高电压技术, 2006, 32(3): 31-33 |
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| 作者姓名： | 王烜 曹晓珑 徐曼 |
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| 作者单位： | 西安交通大学电力设备电气绝缘国家重点实验室,西安,710049;中国电力科学研究院,北京,100085;西安交通大学电力设备电气绝缘国家重点实验室,西安,710049 |
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| 摘 要： | 讨论了高压直流支柱绝缘子金属部件在污秽条件下的腐蚀机理和影响因素。采用持续753 h的加速试验模拟腐蚀过程。试验中所用试品、腐蚀液及泄漏电量均依据现场实际。研究表明,高压直流作用下交流支柱绝缘子金属部件在潮湿和污秽环境中会发生电化学腐蚀,腐蚀强度既与绝缘子表面泄漏电流有关,又与金属件的材料和制造工艺有关。由于中国污秽问题严重,应用于恶劣环境的高压直流支柱绝缘子应考核其金属件抗腐蚀能力。
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| 关 键 词： | 高压直流 支柱绝缘子 金属 腐蚀 试验 泄漏电流 |
| 文章编号： | 1003-6520(2006)03-0031-03 |
| 收稿时间： | 2005-09-08 |
| 修稿时间： | 2005-09-08 |
Study and Test of Electrolytic Corrosion for HVDC Support Insulator |
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| WANG Xuan,CAO Xiaolong,XU Man. Study and Test of Electrolytic Corrosion for HVDC Support Insulator[J]. High Voltage Engineering, 2006, 32(3): 31-33 |
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| Authors: | WANG Xuan CAO Xiaolong XU Man |
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| Affiliation: | 1(1.State Key Laboratory of Electrical Insulation for Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;2.China Electric Power Research Institute,Beijing 100085,China) |
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| Abstract: | In this paper,the mechanism and factors of electrolytic corrosion is studied when support insulators are used in HVDC.An accelerating corrosion test last for 753 hours had been finished.It is according to actual data such as sample corrosive and quantity of electric charge in the test.By the result,AC support insulators is energized with DC,its metal flanges are damaged by electrolytic corrosion under pollution and wet environment.Corrosion intensity is decided by the leakage current,it is also affected by the material and facture technique of metal flanges.Due to the pollution condition in China,it is necessary to evaluate the ability of corrosion resistant when the HVDC insulators are used in severe environment. |
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| Keywords: | HVDC support insulator metal corrosion test leakage current |
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