CAJ | 학술논문

气体绝缘金属封闭开关设备(GIS)的外壳、支座和母线一般采用铝及铝合金材料焊接成型及相互连接，焊缝开裂相关的缺陷和故障会直接影响电网的安全稳定运行和工程按期投运。论述了GIS的外壳、支座及导体的焊接技术，并结合GIS外壳焊缝开裂、支座焊缝开裂和导体焊缝断裂三种典型焊接缺陷和故障案例进行了原因分析，提出焊接接头结构设计不合理、对材料的焊接性分析不足、焊接工艺执行不严是GIS焊接接头失效的三个主要原因。
기체절연금속봉폐개관설비(GIS)적외각、지좌화모선일반채용려급려합금재료한접성형급상호련접，한봉개렬상관적결함화고장회직접영향전망적안전은정운행화공정안기투운。논술료GIS적외각、지좌급도체적한접기술，병결합GIS외각한봉개렬、지좌한봉개렬화도체한봉단렬삼충전형한접결함화고장안례진행료원인분석，제출한접접두결구설계불합리、대재료적한접성분석불족、한접공예집행불엄시GIS한접접두실효적삼개주요원인。
Generally, the tanks, supports and buses of gas-insulated metal-enclosed switchgear (GIS) were welded using aluminum and aluminum alloy. Welding defects and faults, such as weld cracking, will directly affect the security and stable operation of the power grid and projects being put into operation on schedule. This paper briefiy described the tanks, supports and the welding technology on GIS, combining with three typical weld cracking cases and its reasons analysis. The unreasonable design of welded joint structure, insufficient analysis of weld ability, lax execution of welding process are three main reasons for the failure of welded joints on GIS.