摘要
智能变电站中配置的保护、测控、智能装置等大量直流负荷承载着安全稳定运行的重大任务,对供电可靠性要求极高。提出了基于交直流混合微网的变电站新型站用电系统,引入光—储电源系统,优化了站用电系统网络结构,分析其工作模式,并设计了变流器的控制策略。搭建典型220kV变电站站用电系统模型,通过仿真事故发生及事故恢复过程,验证了控制策略的有效性。
A large number of DC loads, such as protection device, monitor device and intelligent device, demand a high reliability of power supply to ensure the grid security and stability. A new substation auxiliary power system based on hybrid AC/DC microgrid is proposed, which introduces the photovohaic and battery generation system by optimizing the auxiliary power system structure, as well as the analysis of operation modes and the design of related control strategies. The simulation model of auxiliary power system in typical 220 kV substation is set up to simulate the accident and recovery procedure. The results show the effectiveness of control strategies.
作者
许佳佳
张敏
是晨光
XU Jiajia;ZHANG Min;SHI Chenguang(State Grid Jiangsu Wuxi Electric Power Company,Wuxi 214000,China;State Grid Shanxi Electric Power Research Institutes,Taiyuan 030000,China)
出处
《智慧电力》
北大核心
2018年第7期14-18,共5页
Smart Power
关键词
交直流混合微网
智能变电站
站用电系统
控制策略
hybrid AC/DC microgrid
intelligent substation
auxiliary power system
control strategies
