| 史训涛,黎智,陈川,向利,张文强.湿热环境下配电自动化终端的腐蚀失效分析[J].装备环境工程,2019,16(7):95-100. SHI Xun-tao,LI Zhi,CHEN Chuan,XIANG Li,ZHANG Wen-qiang.Corrosion Failure of Distribution Automation Terminal in Hot and Humid Environment[J].Equipment Environmental Engineering,2019,16(7):95-100. |
| 湿热环境下配电自动化终端的腐蚀失效分析 |
| Corrosion Failure of Distribution Automation Terminal in Hot and Humid Environment |
| 投稿时间：2019-02-26 修订日期：2019-07-25 |
| DOI：10.7643/ issn.1672-9242.2019.07.021 |
| 中文关键词: 南方电网 配电自动化终端 湿热环境 腐蚀失效 防护措施 |
| 英文关键词:southern power grid distribution automation terminal humid and hot environment corrosion failure protective measures |
| 基金项目: |
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| Author | Institution |
| SHI Xun-tao | 1. Southern Power Grid Research Institute Limited Liability Company, Guangzhou 510080, China |
| LI Zhi | 2. State Key Laboratory of Environmental Adaptability of Industrial Products, China Academy of Electrical Appliances Research Limited, Guangzhou 510663, China |
| CHEN Chuan | 2. State Key Laboratory of Environmental Adaptability of Industrial Products, China Academy of Electrical Appliances Research Limited, Guangzhou 510663, China |
| XIANG Li | 2. State Key Laboratory of Environmental Adaptability of Industrial Products, China Academy of Electrical Appliances Research Limited, Guangzhou 510663, China |
| ZHANG Wen-qiang | 2. State Key Laboratory of Environmental Adaptability of Industrial Products, China Academy of Electrical Appliances Research Limited, Guangzhou 510663, China |
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| 中文摘要: |
| 目的 解决配电自动化终端在湿热环境下的腐蚀失效问题，保障配网自动化系统的安全运行，延长配电自动化终端的使用寿命。方法 分别选用三台架空终端FTU作为研究对象，研究配电自动化终端在湿热环境下的腐蚀失效特点，并提出针对性防护措施。采用SEM和EDS表征方法展开配电自动化终端的腐蚀失效分析。结果 由EDS数据结果发现，相比较于轻微腐蚀区域，腐蚀区域的氧含量均大幅增加，且出现硫元素和氯元素，表明腐蚀环境主要是含硫和氯的潮湿环境。航空插头表面覆盖镍和铜两层镀层，腐蚀后的试样表面不仅检测到铜，有的甚至检测到基材铁，说明腐蚀后镀层已逐步失效，部分基材裸露，且已开始腐蚀。结合SEM发现，样品表面有大量颗粒粗大的腐蚀产物，且明显看出镀层已被破坏。结论 材料腐蚀失效主要是由于高温度、湿度、含氯及硫等大气环境加速终端设备腐蚀，以及镀层被破坏或漏镀等问题造成基材裸露，腐蚀进一步深入发展。因此，根据湿热环境下配电自动化终端的腐蚀特点，提出针对性的防护措施。保障配网自动化系统的安全运行的同时，延长配电自动化终端的使用寿命，为今后的实证测试提供可靠依据。 |
| 英文摘要: |
| Objective To solve the corrosion failure problem of distribution automation terminal in hot and humid environment, guarantee the safe operation of distribution network automation system, and extend the service life of power distribution automation terminal. Methods Three overhead FTU terminals were selected as the research objects, to study characteristics of corrosion failure of distribution automation terminal in hot and humid environment and develop effective protective measures. The corrosion failure of distribution automation terminal was analyzed by SEM and EDS. Results EDS data showed that the content of oxygen in corrosion region was significantly higher than that of the slight corrosion region, and the presence of sulfur and chlorine indicated that the corrosion environment was mainly a humid environment containing sulfur and chlorine. The surface of aviation plug is covered by two plating layers of nickel and copper. While surface of corrosion sample is not only detected of copper, but also some iron. It meant that the plating was destroyed, the part of the base material was exposed, and the corrosion appeared. Combined with the SEM, it was found that the surface of corrosion products had a great number of coarse particles. The plating was destroyed obviously. Conclusion The corrosion failure of materials is mainly due to the accelerated corrosion of terminal equipment in the atmospheric environment of high temperature, humidity, chloride ion and sulfur, as well as the exposure of substrate caused by damage of plating layer or leakage plating, leading further development of corrosion. Therefore, targeted protection measures are developed according to the corrosion characteristics of the distribution automation terminal in the hot and humid environment. Then, the safety operation of distribution network automation system is guaranteed, and the service life of distribution automation terminal is extended at the same time, and the reliable basis will be provided for future empirical test. |
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