电容器地震破坏机理分析

Qingyun Min, Zhihu Hong, Dexu Zou, Fangrong Zhou, Longchang Zhu, Weiju Dai, Jingyi Yan, Haoruo Sun, Qiang Xie
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引用次数: 0

摘要

高压并联电容器组对电力系统的正常运行非常重要,尤其是对特高压直流输电中的长距离大容量输电以及电力系统联网具有重要作用。因此,其在地震下的性能响应是人们关注的重点之一。通过对实际电容器、正弦拍波和实际地震输入的精细有限元仿真建模,研究了地震下的动态特性和响应指标。结果表明,电容器组件 x 方向的刚度大于 y 方向的刚度。模型的薄弱位置是端部绝缘子和中间绝缘子的根部和顶部。在 X 波和 Y 中心波等不同工况作用下,电容器装置端部绝缘子根部的最大应力响应为 4.98 兆帕,安全系数为 3.51,满足大于 1.67 的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of seismic damage mechanism of capacitor
A high voltage shunt capacitor bank is very important for the normal operation of the power system, especially for the UHVDC transmission in long distance large capacity transmission, and power system networking has an important role. Therefore, its performance response under earthquakes is one of the key concerns. Through the fine finite element simulation modeling of the actual capacitor, the sine beat wave, and the actual earthquake input, the dynamic characteristics and the response index under the earthquake are studied. The results show that the stiffness in the x direction of the capacitor assembly is greater than that in the y direction. The weak position of the model is the root and top of the end insulator and the middle insulator. Under the action of different working conditions, such as X - and Y-El Centro waves, the maximum stress response of the root of the end insulator of the capacitor device is 4.98 MPa, and the safety factor is 3.51, which meets the requirement greater than 1.67.
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