摘要
区域电网间存在较高的数据传输,使有限的通信和计算资源变得拥塞。为降低区域电网间的通信负担,提出基于事件触发控制的时滞电力系统负荷频率控制(LFC)方法。针对具有通信延迟的LFC系统,建立基于事件触发控制的时滞LFC动态模型。进而采用多求和不等式,提出具有事件触发控制器的时滞相关LFC系统Lyapunov稳定分析判据;在此基础上,推导了基于事件触发通信和输出反馈的负荷频率控制器协同设计方案,以保证电力系统频率稳定性的同时提高数据传输效率。仿真结果表明,所提方法能够有效减小互联系统频率和联络线功率振荡,保证系统的时滞稳定性并减少网络通信的冗余传输。
The higher data transmission between regional power grids congests limited communication and computing resources.In order to reduce the communication burden between regional power grids,the LFC(Load Frequency Control) method of power system with time-delay based on event-triggered control is proposed.As for LFC system with communication delay,the time-delay LFC dynamic model based on eventtriggered control is established.Furthermore,the Lyapunov stability analysis criterion for time-delay correlation LFC system with event-triggered controller is proposed using multiple summation inequalities.On this basis,the collaborative design scheme of LFC controllers based on event-triggered communication and output feedback is derived to ensure the frequency stability of power system and improve the efficiency of data transmission at the same time.Simulative results show that the proposed method can effectively reduce the frequency of the interconnection system and the power oscillation of tie line,ensure the time-delay stability of system and reduce the redundant transmission of network communication.
作者
周一辰
覃露
李永刚
李沙
孙佳辉
马静
ZHOU Yichen;QIN Lu;LI Yonggang;LI Sha;SUN Jiahui;MA Jing(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2022年第7期236-243,共8页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51822703)
河北省自然科学基金资助项目(E2020502067)
中央高校基本科研业务费专项资金资助项目(2019MS079)。
作者简介
周一辰(1990-),女,讲师,博士,主要研究方向为新能源电力系统稳定分析与控制(E-mail:zycncepu@163.com);覃露(1995-),女,硕士研究生,主要研究方向为新能源电力系统稳定分析与控制(E-mail:18871727325@163.com);李永刚(1967-),男,教授,博士研究生导师,主要研究方向为新能源电力系统与电气设备运行及监控(E-mail:lygzxm0@163.com)。
