非周期间歇控制下含风电能源的自动发电控制策略  

Automatic generation control strategy with wind power energy under non-periodic intermittent control

作　　者：杨兴旺 刘斌[1,2] 刘勇 傅志忠 YANG Xing-wang;LIU Bin;LIU Yong;FU Zhi-zhong(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412000,China;College of Science,Hunan University of Technology,Zhuzhou 412000,China;College of Railway Transportation,Hunan University of Technology,Zhuzhou 412000,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412000 [2]湖南工业大学理学院,湖南株洲412000 [3]湖南工业大学轨道交通学院,湖南株洲412000

出　　处：《控制与决策》2024年第12期4027-4036,共10页Control and Decision

基　　金：国家自然科学基金项目(62073132)。

摘　　要：研究风电并网下电力系统的负荷频率控制问题,针对风电具有间歇性的问题提出基于非周期间歇控制的自动发电控制策略,旨在既保证频率稳定性,又节省控制资源.首先,建立风电作为可调度能源并且考虑不确定参数的自动发电控制系统,通过自动发电控制系统进行电力系统的二次调频,从而维持发电功率和负载功率的平衡;其次,将非周期间歇控制引入自动发电控制,提出基于时间触发和基于事件触发的非周期间歇控制的自动发电控制策略;同时,借助Lyapunov-like函数证明了基于非周期间歇控制的自动发电控制系统的输入到状态稳定;最后,通过含风电、火电和水电发电单元的自动发电控制系统的仿真结果表明,基于非周期间歇控制的自动发电控制策略能够在风电并网下维持电力系统的频率稳定,并且能够有效降低控制成本和控制率.The load frequency control problem of power system under wind power grid connection is studied.Aiming at the intermittent problem of wind power,an automatic generation control strategy based on aperiodic intermittent control is proposed.The aim is to ensure frequency stability and save control resources.Firstly,an automatic generation control system with wind power as a schedulable energy source and considering uncertain parameters is established.The secondary frequency modulation of the power system is carried out by the automatic generation control system,so as to maintain the balance between power generation and load power.Then,the aperiodic intermittent control is introduced into the automatic generation control,and the automatic generation control strategy based on time-triggered and event-triggered aperiodic intermittent control is proposed.At the same time,the input-to-state stability of the automatic generation control system based on aperiodic intermittent control is proved by the Lyapunov-like function.Finally,the simulation results of the automatic generation control system with wind power,thermal power and hydropower generation units show that the automatic generation control strategy based on aperiodic intermittent control can maintain the frequency stability of the power system under wind power grid connection,and can effectively reduce the control cost and control rate.

关 键 词：自动发电控制 间歇控制 事件触发控制 频率稳定性 输入到状态稳定 控制率 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]