Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System

Wenwen Zhang; Longlong Chen; Xiaoguang Wei; Guangfu Tang; Lei Qi; Chong Gao; Zhiyuan He

doi:10.17775/CSEEJPES.2022.04620

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Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System

Regular Papers | 更新时间：2026-10-15

- Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System
- Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System
- 中国电机工程学会电力与能源系统学报(英文) 2023年9卷第5期页码：1601-1612
- 作者机构：
  
  1. North China Electric Power University,Beijing,China
  2. State Grid Smart Grid Research Institute Co. Ltd,Beijing,China
  3. State Key Laboratory of Advanced Power Transmission Technology, Beijing Institute Of Smart Energy,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.04620
  中图分类号：
- 纸质出版：2023-09-01
- 稿件说明：
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Wenwen Zhang, Longlong Chen, Xiaoguang Wei, 等. Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(5):1601-1612.

Wenwen Zhang, Longlong Chen, Xiaoguang Wei, et al. Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System[J]. CSEE Journal of Power and Energy Systems, 2023, 9(5): 1601-1612.
Wenwen Zhang, Longlong Chen, Xiaoguang Wei, 等. Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(5):1601-1612. DOI： 10.17775/CSEEJPES.2022.04620.

Wenwen Zhang, Longlong Chen, Xiaoguang Wei, et al. Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System[J]. CSEE Journal of Power and Energy Systems, 2023, 9(5): 1601-1612. DOI： 10.17775/CSEEJPES.2022.04620.

摘要

Abstract

Because of its controlled power factor and no commutation failure

current source converter (CSC) made up of reverse-blocking IGCTs (RB-IGCTs) offers broad application prospects in the field of HVDC system. Valve voltage and power operating range as the most important operating characteristics should be paid attention to but they are always contradictory. First

the relationship between valve voltage and modulation index is obtained. In particular

valve voltage of converter under the three typical modulation methods is compared

analyzed

and verified. Second

with the help of the independent control strategy and coordinated control strategy of both ends

power operating ranges of the three modulation methods are comprehensively analyzed and compared. Third

in order to solve power coupling at a low active power

the improved coordination control strategy at both ends in this paper is proposed and the relationships among active power

reactive power

DC current and phase angle difference are given in detail. Finally

a 500 kV/3 kA simulation system was built in PSCAD/EMTDC to obtain comparison results of the key operating characteristics of CSC under different modulation methods and the converter can realize unity power operation under random active power after adopting the improved coordinated control strategy

and DC current does not decrease to zero

verifying effectiveness of the coordinated control strategy.

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