电网侧储能电站监控系统体系架构及关键技术

储能电站监控系统是储能电站的核心部分,实现了对储能站内电池、电池管理系统、变流器、配电等设备的信息采集、处理、监视、控制、运行管理等功能。储能监控系统的体系架构直接影响储能电站对电网支撑作用的功效。首先总结了当前主流的三种储能监控系统架构技术特点。接着从层次架构、应用功能、性能指标、设备数量、信息交互、运维便捷等方面进行了全方位比对分析。针对储能监控存在的问题,提出储能电站协调控制解决方案。对其中涉及的关键技术进行了分析,包含主备协调器切换机制、信息建模、一次调频及动态无功调节等。最后在实验室搭建了储能协调控制测试环境,经实验验证了储能协调控制的可行性。

Architecture and key technologies of a monitoring and control system for an energy storage power station

The monitoring and control system is the core part of an energy storage power station. It carries out the functions of information collection, information processing, monitoring, control and operation management of the battery, battery management system, power conversion system and distribution equipment. The architecture of the monitoring and control system directly affects the supporting effect of the energy storage power station on the power grid. First, it summarizes the technical characteristics of the three mainstream energy storage monitoring system architectures. Then, a comprehensive comparative analysis is made from the aspects of hierarchical structure, application functions, performance indicators, number of devices, information exchange, convenient operation and maintenance, etc. Considering the problems existing in energy storage monitoring, a coordinated control solution for energy storage power station is proposed. The key technologies involved are analyzed, including the switching mechanism of the main and standby coordinators, information modeling, primary frequency modulation and dynamic reactive power regulation. Finally, a test environment of energy storage coordination control is built in the laboratory, and the feasibility of this technical scheme is verified by experiment. This work is supported by National Natural Science Foundation of China (No. 51707090) and Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd. (No. J2019086).