Research on Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems

ZHANG Wenjia; CAI Hui; WANG Guoteng; QI Wanchun; PENG Zhuyi; XU Zheng

doi:10.13296/j.1001-1609.hva.2020.09.034

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Research on Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems

更新时间：2025-04-26

- Research on Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems
- High VoltageApparatus Vol. 56, Issue 9, Pages: 230-239(2020)
- 作者机构：
  
  1. 国网江苏省电力有限公司经济技术研究院
  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.2020.09.034
  CLC： TM721.1
- Published：2020
- 稿件说明：
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[1]张文嘉,蔡晖,王国腾,祁万春,彭竹弈,徐政.分散接入式混合直流系统的机电暂态建模与控制策略研究[J].高压电器,2020,56(09):230-239.

ZHANG Wenjia, CAI Hui, WANG Guoteng, et al. Research on Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems[J]. High voltageapparatus, 2020, 56(9): 230-239.
[1]张文嘉,蔡晖,王国腾,祁万春,彭竹弈,徐政.分散接入式混合直流系统的机电暂态建模与控制策略研究[J].高压电器,2020,56(09):230-239. DOI： 10.13296/j.1001-1609.hva.2020.09.034.

ZHANG Wenjia, CAI Hui, WANG Guoteng, et al. Research on Electromechanical Transient Modeling and Control Strategy of Decentralized Hybrid HVDC Systems[J]. High voltageapparatus, 2020, 56(9): 230-239. DOI： 10.13296/j.1001-1609.hva.2020.09.034.

摘要

分散接入式混合直流系统是近年来被提出的一种新型直流输电系统拓扑结构

文中提出了分散接入式混合直流系统的机电暂态建模方法和控制策略。首先提出了分散接入式混合直流系统机电暂态建模方法

该方法可满足逆变站不同换流器分散接入受端电网的场景。然后

文中提出了一种附加均流控制策略和电流分配系数优化方法

以提高分散接入式混合直流系统在交流故障下的运行特性。最后在PSS/E中搭建了分散接入式混合直流的机电暂态模型

通过与电磁暂态模型进行响应特性对比

验证了所提建模方法的正确性;并在PSS/E中进行仿真计算验证了所提控制策略的正确性和有效性。

Abstract

This paper studies the electromechanical transient model and the control strategy of line commutated converter（LCC） and modular multilevel converter（MMC） based decentralized hybrid High Voltage Direct Current（HVDC） Transmission systems.Firstly

the technique for modeling the decentralized hybrid HVDC system in electromechanical transient mode is put forward

which is applicable to the scenario that different converters in a station are dispersedly connected to different AC buses.Then

in order to improve the operation characteristics of the HVDC system under AC faults

a current distribution controller and a parameter optimization strategy for the current distribution controller are proposed.Finally

the decentralized hybrid HVDC system model is built on PSS/E（Power System Simulator/Engineering）

the electromechanical transient model proposed in this paper is verified by the electromagnetic transient model

and the effectiveness of the control strategy is verified by simulation.

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