高电压技术2018，Vol.44Issue(6)：2048-2059,12.DOI:10.13336/j.1003-6520.hve.20180425002
换流变压器出线装置非线性电场模拟及其绝缘结构优化
Nonlinear E-field Simulation of Converter Transformer Outlet and Its Structure Optimization
张施令 1彭宗仁2
作者信息
- 1. 国网重庆市电力公司电力科学研究院,重庆 401123
- 2. 西安交通大学电力设备电气绝缘国家重点实验室,西安 710049
- 折叠
摘要
Abstract
The static DC and PR are two typical operation conditions of converter transformer outlet, moreover, the electrical parameters of RIP, transformer oil and OIP have nonlinear relationship with E-field stress and temperature. Under a temperature gradient, the electrical parameters will modify the static DC and PR E-field distribution of composite insulation. In order to simulate the static DC and PR electric field of the composite insulation structure, we established a full model of the converter transformer outlet. Then, the structure parameters of the converter transformer outlet were optimized using combined RBF neural network and NSGA-II algorithm. Moreover, the electric field verification calculation were carried out under AC and PR conditions. The results show that, under uniform temperature condition, the E-field strength is more significant than that under isothermal condition, and the overshoot coefficient of the bushing end and barrier reaches 65％ and 45％, respectively. The study can provide a reference for the design of outlet structure of the converter transformer.关键词
出线装置/温度梯度/复合绝缘/RBF 神经网络/结构优化引用本文复制引用
张施令,彭宗仁..换流变压器出线装置非线性电场模拟及其绝缘结构优化[J].高电压技术,2018,44(6):2048-2059,12.
