高压电器2011，Vol.47Issue(7)：29-34,6.
基于电路等效变换的绝缘子串电压分布研究
Study on Voltage Distribution along Insulator Strings of EHV/UHV AC Transmission Line Based on Circuit Equivalent Transformation
摘要
Abstract
A new method based on circuit equivalent transformation for calculation of insulator strings is proposed in the paper. This method can be used in every condition which is comparable with the electric-network method. What' more, it is much more efficient than other methods, and is easy to be developed into programs by a variety of programming languages. By artificial pollution test, range of the self capacitance and self resistance of the insulator in various conditions (perfect, faulty, clean, polluted) is determined as the input of the simulation program. The simulation result of the voltage distribution along insulator strings of a 500 kV EHV AC transmission line is in line with the actual. Simulation to the voltage distribution along insulator strings of a 1 000 kV UHV AC transmission line shows that corona rings should be installed for a better voltage distribution. The stray capacitance between corona ring and insulators should be about 13 pF to obtain best distribution, which appeared when corona rings were installed at 3-unit-long cover depth.关键词
特高压交流/绝缘子/电压分布/均压环/人工污秽实验/泄漏电导Key words
UHV AC/ insulator/ voltage distribution/ corona ring/ artificial pollution test/ electric conductance分类
信息技术与安全科学引用本文复制引用
黄韬,文远芳,文康珍,吕健双,端木林楠..基于电路等效变换的绝缘子串电压分布研究[J].高压电器,2011,47(7):29-34,6.基金项目
国网电力科学研究院项目基金(090523). （090523）
