风电–氢储能与煤化工多能耦合系统能量广域协调控制架构

Energy Wide-area Coordination Control Architecture of Wind Power-hydrogen Energy Storage and Coal Chemical Multi-functional Coupling System

针对利用风电–氢储能与煤化工多能耦合系统(wind power-hydrogen energy storage and coal chemical multi-functional coupling system,WP-HES&CCMFCS)提升风电的消纳能力,提出了基于广域协调、分层递阶控制原理的WP-HES&CCMFCS能量广域协调分层控制方法。首先,分析了WP-HES&CCMFCS内部能量流动及转换机制,提出了氢储能系统(hydrogen energy storage system,HESS)等效荷电状态(equivalent state of charge,ESOC)的概念及其数学模型,在此基础上,构建了WP-HES&CCMFCS能量广域协调分层控制架构,并定性地描述了各层及相互间耦合关系的基本控制思路。其中,底层的本地WP-HES&CCMFCS控制目标为风电最大限度消纳;多个WP-HES&CCMFCS构成的中间层集群协调控制目标为本地电能质量最优;顶层电网调度以经济性为主控目标。进一步,重点对底层和中间层控制策略进行了探讨,提出了本地电能分配控制、气体分配控制和集群"同调等值"控制三种控制方式。基于MCGS组态软件搭建了本地WP-HES&CCMFCS仿真模型,对HESS的ESOC进行了仿真验证,结果表明所提出的控制思路和方法是有效的。研究成果为广域WP-HES&CCMFCS能量协调控制的进一步深入研究提供参考。

For the use of wind power-hydrogen energy storage and coal chemical multi-functional coupling system （WP-HES＆CCMFCS） to improve the wind power consuming ability, based on wide-area coordination and hierarchy control principle, we put forward the energy wide-area coordination of hierarchical control methods. Firstly, we analyzed the WP-HES＆CCMFCS internal energy flow and conversion mechanism, and proposed the concept of equivalent charged state of hydrogen energy storage system（HESS） and its mathematical model. Thereby, we built the hierarchical control architecture of WP-HES＆CCMFCS energy wide-area coordination, and qualitatively described and the basic control principle of the layers and their coupling relationship. Among them, the underlying local WP-HES＆CCMFCS control target is maximum extent of wind power consumptive. The coordinated control target of intermediate layers with multiple WP-HES＆CCMFCS constituted is the local power quality optimal. The main target of top power grid scheduling is economy. Furthermore, we mainly discussed the control strategy of the bottom and the middle layers, presented three control methods such as local electricity distribution control, local gas distribution control and coherency-based dynamic equivalence of cluster. On the basis of the software of monitor and control generated system（MCGS）, we built the local WP-HES＆CCMFCS simulation model to verify the ESOC.The results show that the proposed control idea and method are effective. The research results provide a reference for in-depth study of wide-area WP-HES＆CCMFCS energy coordination control.