架空柔直线路故障应对关键技术综述

WEN Jinyu; ZHANG Haobo; MEI Xiaobo; YANG Mingrui; ZHOU Meng; LIN Weixing; XIANG Wang

doi:10.13336/j.1003-6520.hve.20250730

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架空柔直线路故障应对关键技术综述

更新时间：2026-09-17

- 架空柔直线路故障应对关键技术综述
- Vol. 51, Issue 8, Pages: 4163-4182(2025)
- 作者机构：
  
  1. 华中科技大学强电磁技术全国重点实验室,武汉,430074
  2. 华中科技大学电气与电子工程学院,武汉,430077
- 作者简介：
- 基金信息：
- DOI：10.13336/j.1003-6520.hve.20250730
  CLC：
- Received：31 August 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
WEN Jinyu, ZHANG Haobo, MEI Xiaobo, et al. 架空柔直线路故障应对关键技术综述[J]. 2025, 51(8): 4163-4182.
DOI：

WEN Jinyu, ZHANG Haobo, MEI Xiaobo, et al. 架空柔直线路故障应对关键技术综述[J]. 2025, 51(8): 4163-4182. DOI： 10.13336/j.1003-6520.hve.20250730.

摘要

架空线柔直输电系统(简称架空柔直)故障概率高，相较于电缆输电在故障应对方面提出了更高要求。该文围绕架空柔直系统的故障全过程，系统梳理了源侧限流(降压)与网侧限流(增阻)技术的原理与应用场景，归纳分析了典型的主保护与后备保护技术路径及其配合时序，并综述了自适应重合闸等恢复手段的演进趋势。在此基础上，进一步面向大规模多端架空柔直输电场景，探讨了两种典型网架结构下的故障特性与应对需求。最后，围绕限流策略优化、直流电网配置设计、故障电弧建模等方面展望了未来研究方向，旨在构建高可靠性、强穿越能力与经济性兼顾的柔直系统。

Abstract

Overhead flexible DC (OFDC) transmission systems have a higher fault probability compared to cable-based systems

posing greater challenges than cables. This paper systematically reviews the full fault-handling process for overhead flexible DC systems

analyzes the principles and application scenarios of source-side current limiting (active voltage reduction) and grid-side current limiting (increased fault loop impedance)

and summarizes the main protection schemes

including main and backup protections

along with their coordination timelines. The evolution of recovery strategies such as adaptive reclosing is also discussed. Furthermore

the fault characteristics and response requirements under two typical DC grid structures are examined for large-scale multi-terminal overhead systems. Finally

future research directions are proposed in areas such as current-limiting strategy optimization

design of DC grid configuration

and fault arc modeling

aiming to support the development of reliable

fault-resilient

and cost-effective flexible DC systems.

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