摘要
针对储能电站接入互联电网的情况,从多角度研究其接入对电力系统小干扰稳定影响。构建了储能模块拓扑结构和数学模型,包括功率解耦控制、荷电状态计算、电流限制环节、电压穿越模型,搭建了含储能系统的互联系统模型,采用特征值分析和时域仿真方法,研究了储能系统输送距离、互联系统联络线功率、储能并网点、储能并网容量等对系统小干扰稳定和低频振荡特性影响,分析了电力系统稳定器的影响。最后通过河南电网浉河-春申线仿真分析,验证储能提高小干扰稳定性的效果。
According to the situation of energy storage system connected to the interconnected power grid,the impact on the small signal stability of the power system was studied from multiple perspectives.The topological structure and mathematical model of the energy storage module were constructed,including power decoupled control,state of charge calculation,current limit link and voltage ride-through model.The interconnection system model with energy storage system was established,the influences of transmission distance of energy storage power stations,power of interconnected systems,grid connection points,and grid storage capacity,as well as the power system stabilizers on the small signal stability and low frequency oscillation characteristics of power system were studied by the eigenvalue analysis and time-domain simulation methods.Finally,through simulation analysis of transmission line from Shihe to Chunshen in Henan power grid,the effects of energy storage in improving the small signal stability of the power system are validated.
作者
饶宇飞
曹晓璐
杨海晶
和萍
李钊
马涛
RAO Yufei;CAO Xiaolu;YANG Haijing;HE Ping;LI Zhao;MA Tao(Electric Power Research Institute of State Grid Henan Electric Power Company,Zhengzhou 450052,China;Henan Hezhong Electric Power Technology Co.,Ltd.,Zhengzhou 450052,China;College of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)
出处
《电器与能效管理技术》
2020年第5期35-43,50,共10页
Electrical & Energy Management Technology
基金
国家自然科学基金资助项目(51507157)
河南省高等学校青年骨干教师资助项目(2017GGJS093)。
关键词
储能系统
小干扰稳定
特征值分析
低频振荡
energy storage system
small signal stability
eigenvalue analysis
low frequency oscillation
