基于五端MMC-MTDC系统的协调启动和故障恢复启动控制策略
摘要:为解决多端直流输电系统(multi-terminal direct current, MTDC)存在能量冲击,影响系统的正常启动的问题,提出一种智能协调启动控制策略。变电站采用模块化多电平换流器(modular multilevel converter, MMC),在MMC的预充电的过程中存在预充电“先发优势”的问题,为此搭建了五端MMC-MTDC系统的预充电与协调启动模型,针对几种典型的MMC-MTDC系统故障进行分析,提出智能故障恢复快速启动控制策略,仿真验证结果表明:所提出的控制策略能够有效降低启动时的暂态能量冲击,现场测试结果与预期结果一致。
Abstract：An intelligent coordinated startup control strategy is proposed to solve the problem of energy shock affecting the normal startup of multi-terminal direct current (MTDC) transmission system. The substation adopts modular multilevel converter (MMC), in the process of pre-charging MMC, there exists the problem of pre-charging "first-mover advantage" . For this reason, the pre-charging and coordinated startup model of five-terminal MMC-MTDC system was built. Based on the analysis of several typical MMC-MTDC system failures, the intelligent fault recovery and quick startup control strategy was proposed. The simulation results show that: The proposed control strategy can effectively reduce the transient energy impact during startup, and the field test results are consistent with the expected results.
标题：基于五端MMC-MTDC系统的协调启动和故障恢复启动控制策略
title:Coordinated Startup and Fault Recovery Starts Control Policy Based on Five-Terminal MMC-MTDC System
作者：张倩, 立梓辰, 赵博文, 张延迟
authors:ZHANG Qian, LI Zichen, ZHAO Bowen, ZHANG Yanchi
关键词：模块化多电平换流器(MMC),多端直流输电系统(MTDC),预充电,协调启动,故障恢复启动,
keywords:modular multilevel converter (MMC),multi-terminal direct current (MTDC),pre-charge,coordinated startup,failure recovery startup,
发表日期：2022-06-10
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