Parameter Selection Method of Modular Combined DC Transformer and Its Main Circuit

ZHENG Mei; CHEN Qian; SONG Yuanjian; XU Zheng; ZHANG Zheren

doi:10.13296/j.1001-1609.hva.2021.08.021

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Parameter Selection Method of Modular Combined DC Transformer and Its Main Circuit

更新时间：2025-04-26

- Parameter Selection Method of Modular Combined DC Transformer and Its Main Circuit
- High VoltageApparatus Vol. 57, Issue 8, Pages: 151-158(2021)
- 作者机构：
  
  1. 国网浙江省电力有限公司电力科学研究院
  2. 浙江大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.08.021
  CLC： TM41;TM721.1
- Published：2021
- 稿件说明：
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ZHENG Mei, CHEN Qian, SONG Yuanjian, et al. Parameter Selection Method of Modular Combined DC Transformer and Its Main Circuit[J]. High voltageapparatus, 2021, 57(8): 151-158.
DOI：

ZHENG Mei, CHEN Qian, SONG Yuanjian, et al. Parameter Selection Method of Modular Combined DC Transformer and Its Main Circuit[J]. High voltageapparatus, 2021, 57(8): 151-158. DOI： 10.13296/j.1001-1609.hva.2021.08.021.

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。

Abstract

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.

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