基于密封氣壓檢測的引下線腐蝕狀態(tài)監(jiān)測研究
周金邢1,魯海亮2,印希宇3,胡向紅4,文習山5
(1 國網浙江諸暨市供電有限公司,浙江 諸暨 311800;2 武漢安海迅科技有限公司,湖北 武漢 430072;
3 國網四川省電力公司成都供電公司,四川 成都 610000;4 紹興建元電力集團有限公司,浙江 紹興 312000;
5 武漢大學 電氣與自動化學院,湖北 武漢 430072)
摘 要:目前國內桿塔或其他電力設施的接地引下線均未做防腐措施處理,對電力系統(tǒng)的安全運行造成極大隱患。提出了可用于變電站及輸電線路接地引下線的腐蝕狀態(tài)監(jiān)測方法,并設計了基于密封氣壓檢測的引下線腐蝕狀態(tài)監(jiān)測裝置,將中空充氣密封狀態(tài)的腐蝕單元與接地引下線一同埋入土壤中,且與接地引下線保持電氣連接,保證監(jiān)測裝置與接地引下線在同樣的土壤環(huán)境中發(fā)生腐蝕,且具有同樣大小的通流。通過制作實驗室模型及可行性試驗,驗證了該裝置可實現免開挖接地引下線腐蝕狀態(tài)的監(jiān)測功能。
關鍵詞:接地引下線;防腐措施;腐蝕監(jiān)測;免開挖
中圖分類號:TM862 文獻標識碼:A 文章編號:1007-3175(2020)10-0043-05
Study on Corrosion Condition Monitoring of Lead-In Line Based on Embedded Corrosion Unit
ZHOU Jin-xing1, LU Hai-liang2, YIN Xi-yu3, HU Xiang-hong4, WEN Xi-shan5
(1 State Grid Zhuji Power Supply Company, Zhuji 3118 00, China;
2 Wuhan Anhaixun Technology Co., Ltd, Wuhan 430072, China;
3 State Grid Chengdu Power Supply Company, Chengdu 610000, China;
4 Shaoxing Jianyuan Electric Power Group Co., Ltd, Shaoxing 312000, China;
5 School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China)
Abstract: At present, the grounding down conductors of poles or other power facilities in China have not been treated with anti-corrosion measures; it causes great hidden dangers to the safe operation of the power system. In this paper, a corrosion state monitoring method that can be used for grounding down conductors of substations and transmission lines is proposed, and a corrosion state monitoring device for down conductors based on sealing air pressure detection is devised, that is bury the corrosive unit in a hollow, air-filled and sealed state together with the ground down conductor into the soil, and maintain electrical connection with the ground down conductor, and moreover it should ensure that the monitoring device and the ground down conductor are corroded in the same soil environment, have the same flow through. A laboratory model is made to carry out feasibility test, which verifies that the device can realize the monitoring function of the corrosion status
of grounding lead down without excavation.
Key words: ground lead-in line; anti-corrosion measure; corrosion monitoring; excavation free
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