计及热电耦合的太阳能联产系统功率协调控制  

Coordination Control for Integrated Solar Combined Cycle With Thermoelectric Coupling

作　　者：杨挺[1] 于亚利 张亚健[1] 赵黎媛 YANG Ting;YU Yali;ZHANG Yajian;ZHAO Liyuan(Key Laboratory of Smart Grid(Tianjin University),Ministry of Education,Nankai District,Tianjin 300072,China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072

出　　处：《电网技术》2020年第9期3433-3440,共8页Power System Technology

基　　金：国家电网公司科技项目(5700-201946239A-0-0-00)。

摘　　要：为提高可再生能源利用率并适应电-热综合能源系统的发展,太阳能光热发电供热联产系统得到重视,并匹配传统发电设备作为辅助能源减轻由于太阳能间歇性带来的波动。但联产系统中不同发电设备响应速度差异导致供需功率不平衡,直至影响系统稳定运行。针对该问题,研究并提出针对太阳能热发电与燃气轮机组成的联产系统的惯性功率补偿优化控制新方法。首先建立了太阳能光热发电供热联产系统数学模型,针对电-热不同能源响应速度差异问题,提出惯性功率补偿方法。在此基础上,论文考虑系统模型参数的不确定性,采用H_2/H_∞控制器对系统进行控制,提升系统动态性能及鲁棒性,并针对影响系统控制精度的控制加权矩阵采用智能优化算法进行参数优化,显著提升控制器的控制精度。最后论文针对100MW太阳能光热发电供热联产系统进行了常规运行及负荷波动等多场景仿真,验证所提控制算法的有效性和系统稳定性。In order to improve the utilization of renewable energy and adapt to the development of integrated energy systems,the solar thermal power generation systems are being widely accepted with the traditional power generation equipment as an auxiliary energy source to mitigate fluctuations due to the intermittent nature and uncertainty of the solar energy.However,the difference in response speed of the diferent power generation equipment leads to imbalance of the supply and demand power,which affects the smooth operation of the system.Therefore,this paper proposes an inertial power compensation optimization control strategy based on a solar thermal power generation system combined with the solar thermal power generation and the gas turbine.Firstly,a solar energy co-generation system model considering thermoelectric coupling is established.An inertial power compensation scheme is proposed for different energy response speed mismatches.On this basis,due to the uncertainty of the system model,the H2/H∞ controller is used to control the system which improves the dynamic performance and robustness of the system.Also,the intelligent optimization algorithm is used to optimize the parameters in the control weight matrix,which influences the system control accuracy,to improve the control precision of the controller.Finally,the paper carries out multi-scenario simulation to verify the effectiveness and stability of the proposed strategy.

关 键 词：太阳能联产系统 惯性功率补偿 热电耦合 H_2/H_∞控制 灰狼算法 

分 类 号：TM721[电气工程—电力系统及自动化]