南方电网技术2016，Vol.10Issue(7)：51-56,6.DOI:10.13648/j.cnki.issn1674-0629.2016.07.010
柔性直流输电用联接变压器绝缘参数配置与试验研究
Research on Insulation Parameters Configuration and Test of Connected Transformer for VSC-HVDC
雷园园 1赵林杰 1罗雨 1程建伟 1李锐海 1饶宏1
作者信息
摘要
Abstract
The main circuit connection modes and operating voltage characteristics of VSC-HVDC system have brought new technical problems on equipment type selection. Aiming at symmetric monopole connection mode and based on the asynchronous interconnection project between Yunnan power grid and CSG,the key type selection of connected transformer for VSC-HVDC system is systemetically studied,a technical principle is proposed to determine the valve side insulation tolerance level of connected transformer by calculating the maximum load voltage drop based on reactive power controlled mode,the recommended process and methods of insulation parame-ters configuration are also given,and the relative insulation test method for winding terminal is put forward. Furthermore,considering that the symmetrical bipolar connection mode may be used in VSC-HVDC system with higher voltage level and lager current in the fu-ture,the paper proposes a calculation formula to calculate the DC and AC withstand voltage at valve side winding. The research results have important technical guiding significance for the type selection,technical standards formulation and test of the connected transform-er.关键词
柔性直流输电/联接变压器/参数配置/绝缘水平/试验考核/直流偏置电压Key words
VSC-HVDC/connected transformer/parameters configuration/insulation level/test inspection/DC bias voltage分类
信息技术与安全科学引用本文复制引用
雷园园,赵林杰,罗雨,程建伟,李锐海,饶宏..柔性直流输电用联接变压器绝缘参数配置与试验研究[J].南方电网技术,2016,10(7):51-56,6.
