Simulation Study of Converter Transformer Loss in LCL-HVDC System

YANG Zhidong; NI Qing; LUO Longfu

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Simulation Study of Converter Transformer Loss in LCL-HVDC System

更新时间：2025-11-18

- Simulation Study of Converter Transformer Loss in LCL-HVDC System
- Vol. 41, Issue 2, Pages: 32-35+40(2021)
- 作者机构：
  
  1. 国家电网有限公司
  2. 湖南大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM40;TM721.1
- Published：2021
- 稿件说明：
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[1]杨志栋,倪晴,罗隆福.LCL型高压直流输电系统中换流变压器损耗的仿真研究[J].湖南电力,2021,41(02):32-35+40.

YANG Zhidong, NI Qing, LUO Longfu. Simulation Study of Converter Transformer Loss in LCL-HVDC System[J]. 2021, 41(2): 32-35+40.
[1]杨志栋,倪晴,罗隆福.LCL型高压直流输电系统中换流变压器损耗的仿真研究[J].湖南电力,2021,41(02):32-35+40. DOI：

YANG Zhidong, NI Qing, LUO Longfu. Simulation Study of Converter Transformer Loss in LCL-HVDC System[J]. 2021, 41(2): 32-35+40. DOI：

摘要

针对基于电网换相换流器的高压直流输电（LCC-HVDC）系统中存在的换流变压器噪声大、逆变侧换相失败等问题

提出了采用LCL型换流器的高压直流输电系统。在PSCAD中建立荆门—上海±500 kV直流输电的LCC-HVDC和LCL-HVDC系统的仿真模型

在该模型中测量了换流变压器阀侧绕组的谐波电流

研究了换流变压器的负载损耗。通过研究发现相较于LCC-HVDC系统

LCL-HVDC系统中的换流变压器的负载损耗降低了约38.1%。

Abstract

In order to solve the problems existing in traditional HVDC transmission based on grid commutation converter（LCL-HVDC）system

such as high noise of converter transformer and commutation failure of inverter side

a HVDC transmission with LCL converter system is proposed. In this paper

the simulation models of LCC-HVDC and LCL-HVDC system of Jingmen-Shanghai ± 500 kV DC transmission are established in PSCAD. In this model

the harmonic current of valve side winding of converter transformer is measured

and the load loss of converter transformer is studied. Through the research

the load loss of converter transformer in LCL-HVDC system is reduced by 38.1% compared with LCC-HVDC system.

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