模块化多电平柔性直流换流器阀组本体保护的设计

FENG Yadong

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模块化多电平柔性直流换流器阀组本体保护的设计

更新时间：2025-08-13

- 模块化多电平柔性直流换流器阀组本体保护的设计
- Automation of Electric Power Systems Vol. 39, Issue 11, Pages: 64-68(2015)
- 作者机构：
  
  清华大学电机工程与应用电子技术系,北京市,100086
- 作者简介：
- 基金信息：
- DOI：
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- Published：2015
- 稿件说明：
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FENG Yadong. [J]. Automation of electric power systems, 2015, 39(11): 64-68.
DOI：

FENG Yadong. [J]. Automation of electric power systems, 2015, 39(11): 64-68. DOI：

摘要

换流器阀组是柔性直流输电系统的关键设备。文中介绍了模块化多电平换流器阀组的基本原理和组成结构

基于舟山五端柔性直流输电工程对阀组过电流和过电压故障进行了仿真、分析研究

提出了阀组保护的关键需求

以此为基础构建了由子模块控制电路、阀控系统及柔性直流控制保护系统组成的多层次的完整的阀组本体保护系统及保护策略

提出了系统性的过流保护策略和系统性过电压判据

有效提高了阀组的过电流、过电压穿越能力。阀组保护系统及保护策略经过了±6 kV两端柔性直流输电系统的试验验证和舟山、南澳工程现场试验的验证。

Abstract

The converter valve is the key equipment in a voltage source converter based high-voltage direct current (VSC-HVDC) system. This paper is concerned with the structure and principles of the modular multilevel converter (MMC) valve

an analysis of the characteristics and effects of the internal and external faults

and a complete multi-level protection strategy and protection system for the valve with sub-module control circuits

the valve control system and high-voltage direct current (HVDC) control and protection system. A criterion for systemic over-voltage is proposed

effectively improving the over voltage ride through capability of the valve. The strategy as well as function of the valve protection system has been validated through an experimental ±6 kV point-to-point VSC-HVDC system

and used in Zhoushan and Nan’ao multi-terminal VSC-HVDC projects. This work is supported by National High Technology Research and Development Program of China (863 Program) （No. 2013AA050106).

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