摘要
储能装置用于抑制低频振荡(low-frequency oscillator,LFO)具有响应速度快、可灵活调节有功和无功功率的显著特点,尤其是用于抑制区域间振荡模式时,但是多机系统中如何选择储能装置的安装位置从而更有效抑制低频振荡,是一个值得深入研究的问题。首先在电力系统分析综合程序PSASP中根据电池储能(battery energy storage system,BESS)的控制系统和模块接口部分建立电池储能的仿真模型;其次通过小干扰稳定分析计算系统状态矩阵及特征值,分析对比两种储能选址方法,即特征向量法和特征值灵敏度法,通过分析得出用特征值灵敏度法选址时准确性更好的原因;最后利用典型的两区域四机系统,分别求取特征向量及特征值灵敏度,验证了灵敏度法对于储能选址具有良好的适应性。
Energy storage devices are used to suppress low-frequency oscillator(LFO)in power systems due to their fast response and flexible adjustment of active and reactive power,especially for inter-area oscillation mode.However,the determination of location of energy storage devices in multi-machine systems to suppress LFO more effectively is a question worthy of further study.Firstly,this paper establishes the simulation model of battery energy storage system(BESS)in the PSASP according to the control system and the interface part of the module.Secondly,the system state matrix and eigenvalues are calculated through the small signal stability analysis,and two methods of energy storage location,namely the eigenvector method and the eigenvalue sensitivity method,are compared,followed by the reason that the latter is more accurate.Finally,by a typical two-region four-machine system instance,the eigenvector and the eigenvalue sensitivity are respectively calculated to verify the sensitivity method owning a better adaptability for energy storage location.
作者
任宏宇
康积涛
钱琳
REN Hongyu;KANG Jitao;QIAN Lin(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,Sichuan Province,China)
出处
《分布式能源》
2019年第2期23-29,共7页
Distributed Energy
基金
国家自然科学基金项目(51477143)~~
关键词
电池储能(BESS)
选址
特征值灵敏度
battery energy storage system(BESS)
optimal location
eigenvalue sensitivity
作者简介
任宏宇(1987—),男,硕士研究生,研究方向为电力系统稳定与储能,silvining@163.com;康积涛(1962—),男,博士,教授,主要从事电力系统无功与电压稳定性、次同步振荡研究等,kangjitao@swjtu.cn;钱琳(1994—),女,硕士研究生,研究方向为电力系统频率动态稳定,2605236120@qq.com。
