摘要
储能系统具有优质调频电源的特征,利用储能辅助电力调频不仅有利于电网的整体运行,而且有助于提升电网调频的经济效益及环境效益。本文分析了电网频率控制模式以及储能参与电力系统调频的可行性,提出储能参与电力系统调频的5种应用场景,搭建了3区8机等效模型仿真研究不同场景下储能系统运行边界,验证固定单位调节功率及变单位调节功率的计算方法,以及二次调频中域控制误差(ACE)信号在多个储能单元中的分配原则。仿真结果表明:固定单位调节功率K,在阶跃负荷扰动下K值宜取5,在连续负荷扰动下K值宜取10;在二次调频中多个储能单元之间,基于储能荷电状态(SOC)幂函数的功率分配原则可实现功率的合理分配。
Energy storage system has the characteristics of superior quality frequency modulation power source.Using energy storage technology to assist power frequency modulation is not only beneficial to the overall operation of power grid,but also helpful to enhancing the economic and environmental benefits of power system frequency modulation.This paper analyzes the frequency control modes of power grid and the feasibility of energy storage participating in power system frequency modulation.Five application scenarios of energy storage participating in power system frequency modulation are proposed,and the operation boundary of energy storage system in different scenarios is analyzed.The equivalent model of three zones and eight units is built to verify the calculation method of the power regulated by the fixed unit and variable unit of primary frequency modulation,and the principle of area control error(ACE)signal distribution in multiple energy storage units in secondary frequency modulation.The simulation results show that,the value of the fixed unit regulation power K should be 5 under the condition of step load disturbance and 10 under the condition of continuous load disturbance.Among multiple energy storage units,the principle of power distribution based on state of charge(SOC)power function can realize the reasonable distribution of power.
作者
谢志佳
李德鑫
王佳蕊
孟涛
XIE Zhijia;LI Deixin;WANG Jiarui;MENG Tao(China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China;Electric Power Research Institute of State Grid Jilin Electric Power Company,Changchun 130021,China)
出处
《热力发电》
CAS
北大核心
2020年第8期117-125,共9页
Thermal Power Generation
基金
国网吉林省电力有限公司科技项目(SGJLDK00DWJS1800042)。
关键词
储能系统
火电机组
电力系统
调频
应用场景
辅助服务
energy storage system
thermal power unit
power system
frequency modulation
application scenario
ancillary services
作者简介
第一作者:谢志佳(1989),男,硕士,工程师,主要研究方向为大规模储能技术,xiezhijia1989@sina.com。
