中国电机工程学报2025，Vol.45Issue(11)：4503-4513,11.DOI:10.13334/j.0258-8013.pcsee.240151
220kV三相共箱GIL振动响应与结构优化
Vibration Response and Structural Optimization of 220kV Three-phase Integrated Enclosure GIL
摘要
Abstract
Given the long-term micro-vibration issues in gas-insulated transmission lines(GIL)during operation,studying their vibration response and structural optimization is crucial for enhancing equipment reliability and safety.This paper takes a 220 kV three-phase integrated enclosure GIL as an example.Through theoretical calculations combined with finite element analysis(FEA),the excitation frequency of the electromagnetic force on the GIL is determined.The paper utilizes modal analysis along with effective mass to ascertain modal frequencies and weak parts of GIL,and establishes optimization objectives.The paper investigates the vibration response characteristics of GIL by conducting harmonic response analysis in relation to electromagnetic force resonance,while systematically varying the parameters of critical components.The results show that the GIL conductor and enclosure are subjected to 100 Hz electromagnetic force under normal conditions,and the X and Y components are approximately sinusoidal.The modal analysis results show that support insulators and conductors are the weak parts of GIL.The vibration response analysis results show that the vibration response of 12m GIL is inversely proportional to the insulator spacing,and the vibration response is the smallest when the spacing is 5 m.The optimized design shows that it is recommended to set 3 supports for 10～12 m GIL,2 supports for 7～9 m GIL,and 1 support for 7 m GIL.In addition,the GIL vibration response is inversely proportional to the conductor thickness,and the vibration response is minimum when the thickness is 12 mm.The conclusions obtained in this paper can provide theoretical guidance for the study of GIL vibration characteristics,structural optimization design and operation and maintenance evaluation.关键词
气体绝缘输电线路(GIL)/振动响应/模态分析/薄弱部件/电磁力/结构优化Key words
gas insulated transmission lines(GIL)/vibration response/modal analysis/weak parts/electromagnetic force/structural optimization分类
动力与电气工程引用本文复制引用
张旭,鲁杰,张潮海,陈晓鸣..220kV三相共箱GIL振动响应与结构优化[J].中国电机工程学报,2025,45(11):4503-4513,11.基金项目
江苏省重点科技成果转化项目(BA2022212).Project Supported by Jiangsu Province Scientific and Technological Achievements Transformation Project(BA2022212). （BA2022212）
