基于直流电压-有功功率特性的VSC-MTDC协调控制策略

REN Jingguo

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基于直流电压-有功功率特性的VSC-MTDC协调控制策略

更新时间：2025-08-13

- 基于直流电压-有功功率特性的VSC-MTDC协调控制策略
- Automation of Electric Power Systems Vol. 39, Issue 11, Pages: 8-15(2015)
- 作者机构：
  
  山东大学电气工程学院,山东省,济南市,250061
- 作者简介：
- 基金信息：
- DOI：
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- Published：2015
- 稿件说明：
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REN Jingguo. [J]. Automation of electric power systems, 2015, 39(11): 8-15.
DOI：

REN Jingguo. [J]. Automation of electric power systems, 2015, 39(11): 8-15. DOI：

摘要

提出了一种用于大规模海上风电并网时电压源换流器型多端直流(VSC-MTDC)输电系统的协调控制策略。以典型的五端直流输电系统为例，提出了基于本地控制器的换流站间协调控制策略，基于直流电压-有功功率调节特性给出了辅助换流站的改进下降控制策略以及定有功功率控制（APC）换流站的改进控制策略，分析了两换流站的工作模式，根据直流网络的潮流分布和最大最小运行方式给出了辅助换流站和APC换流站参数选择的依据。最后，PSCAD/EMTDC仿真验证了在正常、主导换流站故障和辅助换流站故障工况下协调控制策略的有效性；仿真结果表明，该协调控制策略能够实现多端直流输电系统换流站间的有功功率分配，控制效果良好。

Abstract

A coordinated control strategy of voltage source converter based on multi-terminal direct current (VSC-MTDC) transmission system for integrating large-scale offshore wind power is proposed. With the typical five-terminal DC transmission system as an example

a coordinated control strategy based on local controller among converter stations is put forward

as is an improved descent control strategy for assistant converter station as well as an improved control strategy for active power control (APC) converter station

respectively based on DC voltage-active power characteristic

and the working modes of the two converter stations are analyzed. The parameter selection method of assistant and APC converter station is presented via DC power flow distribution and max/min operation mode. Simulations via PSCAD/EMTDC are conducted to validate the coordinated DC voltage control method under normal

master converter station fault and assistant converter station fault conditions

respectively. Results show that this method is able to guarantee the active power allocation of VSC-MTDC transmission system with good control effects. This work is supported by National Natural Science Foundation of China (No. 61320106011

No. 51347008).

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