摘要
随着分布式发电(DG)的大量接入,微电网的安全稳定运行正面临较大的考验,精准切负荷控制策略的重要性愈发突出。为了最小化过切量,提升负荷控制的经济性,需对微电网精准切负荷的控制策略进行改进。首先,介绍了智能负载原理,通过调节电力弹簧(ES)电压的大小实现智能负载功率的动态变化;然后分析了应用权重法与轮次法的传统精准切负荷控制策略,在此基础上提出了一种基于智能负载的精准切负荷控制策略,通过负荷的动态响应实现最小化过切量,并将其应用于权重法与轮次法;最后,算例分析表明,所述方法可有效降低系统过切量,提升负荷控制的经济性。
With the larger and larger amounts of distributed generation,the safe and stable operation of microgrid is being greatly tested,the importance of precise load-shedding control strategy is becoming more and more prominent.In order to minimize the overcutting value,and to improve the economy of load control,the control strategy of precise load-shedding in microgrid needs to be improved.At first,the principle of smart load is introduced and the dynamic change of power of intelligent load is realized by adjusting the voltage of electric spring(ES).Then,the traditional precise load-shedding control strategy of applying weight method and round method is analyzed,and a precise load-shedding control strategy based on smart loads is proposed to minimize the overcutting value through the dynamic response of the load,and apply it to the weight method and the round method.At last,the cases analysis indicate that,the proposed strategy can reduce the system overcutting value effectively,and enhance the economy of load control.
作者
史军
王加澍
熊峰
程维杰
宋俊文
马刚
SHI Jun;WANG Jiashu;XIONG Feng;CHENG Weijie;SONG Junwen;MA Gang(China Southern Power Grid Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China;NARI School of Electrical Engineering and Automation,Nanjing Normal University,Nanjing 210046,China;NARI Technology Co.,Ltd.,Nanjing 211106,China)
出处
《电力工程技术》
2020年第2期103-109,共7页
Electric Power Engineering Technology
基金
国家自然科学基金资助项目(51607093)
中国南方电网有限责任公司科技项目(090000KK52170077)。
关键词
微电网
精准切负荷
智能负载
权重法
轮次法
microgrid
precise load-shedding
smart loads
weight method
round method