1 100 kV GIS用伸縮節(jié)的設計及應用
王彩云，沈豐慧
(新東北電氣集團高壓開關有限公司沈陽電力科技開發(fā)分公司，遼寧 沈陽 110027)
摘 要：氣體絕緣金屬封閉開關設備 (GIS) 安裝后由于環(huán)境溫度的變化、通電時產生的溫升、陽光的照射、風、早晚溫差等原因，使殼體本身的溫度發(fā)生變化而進行熱伸縮，在工程方案設計中需合理設計具有溫度補償型伸縮節(jié)進行補償。介紹了伸縮節(jié)的主要形式及使用方法，對其性能特點、補償計算及工程實際應用進行研究。研究結果表明，設計具有高性能的伸縮節(jié)結構是 GIS 安全可靠性的基礎。
關鍵詞： 氣體絕緣金屬封閉開關設備；伸縮節(jié)；溫升；基礎沉降；母線；補償
中圖分類號：TM595 文獻標識碼：B 文章編號：1007-3175(2022)05-0062-04
Design and Application of Expansion Joint for 1 100 kV GIS
WANG Cai-yun, SHEN Feng-hui
（New Northeast Electric Group High Voltage Switchgear Co., Ltd. Shenyang Electric Power Technology
Development Branch, Shenyang 110027, China）
Abstract: After installing gas-insulated switchgear(GIS), the temperature changes for many reasons, such as environmental temperature changes, temperature rise under electrified, sunlight exposure, wind, and the temperature difference between morning and evening. All these changes could lead to thermal contraction of the shell. Therefore, it is necessary to design temperature-compensated expansion joints for compensation in the engineering design scheme. This paper introduced the capital forms and methods of application of the expansion joint and studied its performance characteristics, compensation calculation, and practical application in engineering. The research result shows that the expansion joint with high performance is the basis of GIS security and reliability.
Key words: gas-insulated switchgear(GIS); expansion joint; temperature rise; foundation settlement; busbar; compensation
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