摘要
当前,直流变压器是解决直流输电系统互联时电压等级不一致问题的主要方法,但传统的直流变压器中含有交流变压器因而价格昂贵。对此文中提出了一种无需交流变压器的模块化组合式直流变压器(modular combined DC transformer,MCT)。文中首先分析了MCT的拓扑结构和工作原理,然后根据MCT的性能要求提出了参数的选择原则,最后在PSCAD研究了含有MCT的直流输电系统仿真模型。时域仿真结果验证了文中所提出的MCT的可行性。
At present,DC transformer is the main method to solve the problem of inconsistent voltage levels in case of interconnection of DC transmission system.However,the traditional DC transformer contains AC transformer and its price is therefore very expensive.For this issue,a kind of modular combined DC transformer(MCT for short)without AC transformer is proposed in this paper.Firstly,the topological structure and operating principle of MCT are analyzed.Then,the selection principle of parameters is proposed in accordance with the performance requirements of MCT.Finally,the simulation model of DC transmission system containing MCT is studied in PSCAD.The feasibility of the MCT proposed in this paper is verified by the time⁃domain simulation results.
作者
郑眉
陈骞
宋远见
徐政
张哲任
ZHENG Mei;CHEN Qian;SONG Yuanjian;XU Zheng;ZHANG Zheren(State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)
出处
《高压电器》
CAS
CSCD
北大核心
2021年第8期151-158,共8页
High Voltage Apparatus
基金
国网浙江省电力有限公司电力科学研究院科技项目(SGTYHT/19⁃JS⁃218)。
