基于动态量化的电力系统事件触发负荷频率控制  

Event-triggered load frequency control for power system based on dynamic quantization

作　　者：丁三波 张康 杨飞生[2] 张家安 DING San-bo;ZHANG Kang;YANG Fei-sheng;ZHANG Jia-an(College of Artificial Intelligence and Data Science,Hebei University of Technology,Tianjin 300401,China;School of Automation,Northwestern Polytechnical University,Xi’an 710072,China;College of Electrical Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学人工智能与数据科学学院,天津300401 [2]西北工业大学自动化学院,陕西西安710072 [3]河北工业大学电气工程学院,天津300401

出　　处：《浙江大学学报（工学版）》2023年第7期1460-1469,共10页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(61903121,62073269);河北省自然科学基金资助项目(F2020202063);河北省创新能力提升计划资助项目(18961604H);航空科学基金资助项目(2020Z0340-53002);陕西省重点研发计划资助项目(2022GY-244)。

摘　　要：针对新能源高比例并网以及由此产生的二次调频通信负荷增加问题,为了节约网络资源,将动态量化技术引入网络控制的电力系统中,应用事件触发负荷频率控制(LFC)方法,通过基于观测器的输出反馈控制器,实现了LFC系统输入到状态稳定.根据系统状态和动态量化参数,在反馈通道中设计加入指数衰减项的事件触发机制,在前向通道中设计加入状态模拟项的事件触发机制.建立基于量化控制的事件触发LFC系统动态模型,在有界负荷扰动下得到闭环系统输入到状态稳定的条件,排除了Zeno现象.通过仿真实验验证了提出方法的有效性.The dynamic quantization technology was introduced into the network-controlled power system and the event-triggered load frequency control(LFC)method was applied to save the network resources aiming at the high proportion of new energy connected to the grid and the increasing communication load of secondary frequency modulation.The input-to-state stability of LFC system was realized by observer-based output feedback controller.An event-triggered mechanism with exponential decay term was designed for the feedback channel,and an eventtriggered mechanism with state simulation term was designed for the forward channel according to the system state and dynamic quantization parameters.A dynamic model of event-triggered LFC system based on quantization communication was established.The condition of closed-loop system input-to-state stability was obtained under the bounded load disturbance.Zeno phenomenon was eliminated.The effectiveness of the proposed method was verified by simulation.

关 键 词：网络控制系统 负荷频率控制 事件触发负荷 动态量化 输入到状态稳定 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]