摘要
复合电气设备的力学性能优于陶瓷电气设备,在变电站、换流站具有广阔的应用前景。为研究±800kV复合绝缘子设备的地震响应,进一步发挥其抗震潜能,提高设备的抗震水平,以±800 kV换流站复合材料支柱绝缘子连接回路为研究对象,运用结构动力学理论分析手段,通过建立两自由度互连电气设备理论模型和动力学方程,研究地震作用下复合材料电气设备间的地震反应规律,分析连接导线刚度和设备刚度对互连设备抗震性能的影响。结果表明:随着连接导线刚度的增大,高频设备的位移变化幅度略大于低频设备,导线刚度越大,两设备之间的地震反应差别越大;在电气功能允许的前提下,适当增加导线的冗余度有利于提高设备的抗震性能。互连回路中一个设备刚度增大后,将引起刚度不变的设备的地震响应增大,回路抗震设计时尽可能使频率接近的两设备互连,降低设备间的地震耦合效应。研究提出了针对复合材料电气设备连接回路抗震设计时设备间频率匹配及导线设计原则,可为设备的抗震设计提供参考。
The mechanical properties of composite electrical equipment are better than ceramic electrical equipment and it have broad application prospects in substation or converter station.In order to research the seismic response of±800kV composite pillar insulator,enhance the seismic level of composite electrical equipment,±800 kV converter station composite material pillar insulator connected circuit was taken as an object,then the seismic response law of composite electrical equipment under seismic actionwas researched,the influence of the conductor stiffness and equipment stiffness on the seismic performance of the connected equipmentwere analyzed by using structural dynamics theoretical analysis method and establishing two degrees of freedom theoretical model and dynamic equation of interconnected electrical equipment.The results showed that as the stiffness of the connecting wire increases,the displacement of the high-frequency equipment is slightly larger than that of the low-frequency equipment.The greater the difference in wire stiffness,the greater the difference in seismic response between the two equipment.Under the premise of electrical function,increasing the redundancy of the wire is beneficial to improve the seismic performance of the equipment.In order to reduce the seismic response of the connected equipment,the two equipment with close frequency are interconnected as much as possible to reduce the seismic coupling effect between the equipment.Then the principle of the frequency matching and the conductor design between the composite electrical equipment were put forward,which provided reference for the seismic design of the equipment.
作者
朱祝兵
张令心
程永锋
卢智成
刘振林
李圣
钟珉
ZHU Zhubing;ZHANG Lingxin;CHENG Yongfeng;LU Zhicheng;LIU Zhenlin;LI Sheng;ZHONG Min(Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Engineering and Engineering Vibration,China Earthquake Administration,Harbin 150080,China;China Electric Power Research Institute,Beijing 100055,China)
出处
《工程科学与技术》
EI
CAS
CSCD
北大核心
2018年第6期23-30,共8页
Advanced Engineering Sciences
基金
国家电网公司总部科技资助项目(GCB17201500063)
关键词
±800kV
复合材料
电气设备
互连回路
耦合效应
±800 kV
composite material
electrical equipment
connection circuit
coupling effect
作者简介
朱祝兵(1982—),男,博士生,高级工程师.研究方向:电力设施抗震和减隔震技术.E-mail:zhuzb@epri.sgcc.com.cn;通信联系人,张令心。E-mail:lingxin_zh@126.com。
