辅助火电机组参与电网调频的BESS容量配置  

Capacity configuration of battery energy storage as an alternative to thermal power units for frequency regulation

作　　者：丁冬[1] 杨水丽[2] 李建林[2] 惠东[2] 刘宗歧[1] 李婷婷[3] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中国电力科学研究院,北京100192 [3]华能北京热电有限责任公司,北京100023

出　　处：《储能科学与技术》2014年第4期302-307,共6页Energy Storage Science and Technology

基　　金：国家电网公司科技项目(DG71-14-032);国家电网公司科技项目(DG71-13-031)

摘　　要：传统调频机组因其固有特性而不易实现实际出力与理论计算值相吻合,并且工作在经济运行区内,难以应对电力系统快速发展、新能源发电并入等引起的频率稳定问题。电池储能系统(battery energy storage system,BESS)具有快速、精确的功率响应能力等优势,从而成为新的辅助调频手段的关注热点。在探讨BESS参与电网一、二次调频的实现方法基础上,对与火电机组具备同等调频能力的BESS功率与容量进行配置,并提出了储能容量控制策略建议。示例计算和对比分析,验证了该配置方案的可行性和储能系统参与电网调频的可靠性,为新调频手段的选取与分析提供了借鉴。Traditional frequency regulation units rarely achieve real-time output equal to the theoretical values because of their inherent characteristics, leading to operation out of the economic zone. It is hard for these units to meet the demands of maintaining power system frequency stability with rapid development of grid involving renewable resources. Battery energy storage system （BESS） has advantages of fast response and precise tracking, providing a new frequency regulation method. On the basis of the use of energy storage for frequency regulation, the capacity configuration of BESS is made as an alternative to generator with the same capacity for the frequency regulation. A capacity control strategy for the energy storage has also been proposed. Exemplar calculations and comparative analysis are conducted to verify the feasibility of proposed capacity configuration methods and the reliability of the energy storage system for regulation.

关 键 词：储能容量配置 负荷变化限幅 调频持续时间 同等调频能力 调频可靠性 

分 类 号：TQ028.8[化学工程]