摘要
高压直流输电可加快电网恢复,但黑启动期间送受端系统具有相反的频率调节要求,该文研究并提出黑启动过程中高压直流输电的变参数频率限制器(frequency limit control,FLC)控制策略,以协调两侧交流系统的调频特性。首先建立异步互联系统的数学模型,寻找确定方式下负荷投入后使送受端交流系统频率偏移最小的最优FLC参数;然后提出变参数FLC控制,以适应电网黑启动过程中交流系统容量和等值发电机参数的不断变化;最后搭建PSCAD/EMTDC模型仿真验证了该控制策略的有效性。
A well-designed control of HVDC can speed up the recovery of power system. In order to coordinate the opposite frequency characteristics of sending and receiving ends, a variable parameter frequency limit control(FLC) scheme of HVDC used in system black-start was proposed. Firstly, the mathematical model of asynchronously connected system was established, and the optimal FLC parameters leading to minimum frequency changes of both sides under a certain operation were obtained. Then a novel variable parameter FLC control scheme was proposed to adapt to the continually changing of the AC system capacity and equivalent generator parameters during the black-start. Finally, simulation results by PSCAD/EMTDC verified the validity of the proposed control scheme.
作者
夏成军
蓝海文
杜兆斌
陈亦平
XIA Chengjun;LAN Haiwen;DU Zhaobin;CHEN Yiping(School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong Province, China;Power Dispatching Control Center, CSC1 Guangzhou 510663, Guangdong Province, China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2018年第9期2641-2648,共8页
Proceedings of the CSEE
基金
国家自然科学基金项目(51577071)
广东省自然科学基金项目(2015A030313202)~~
关键词
高压直流输电
黑启动
优化控制
频率限制器
high voltage direct current (HVDC)
blackstart-up
optimal control
frequency limit control (FLC)
作者简介
夏成军(1974),男,博士,副教授,研究方向为电力系统稳定分析与控制、HVDC与FACTS,cjxia@scut.edu.cn;蓝海文(1992),女,硕士研究生,研究方向为HVDC控制保护,1547825206@qq.com;杜兆斌(1977),男,博士,副教授,研究方向为电力系统稳定分析、交直流协调控制,17464384@qq.com。