基于扩展等面积定则的储能电站提高电网暂态稳定最优工作时间的研究  

The Optimal Working Time of Battery Storage Power Station Improving Power Grid Transient Stability Based on Extended Equal Area Criteria Rule

作　　者：孙培栋 李培强 曹鹏程 邓慧琼 Sun Peidong;Li Peiqiang;Cao Pengcheng;Deng Huiqiong(College of Information Science and Engeering Funjian University of Technology,Fuzhou 350118 China;Smart Grid Simulation Analysis and Integrated Control Fujian University Engineering Research Center,Fuzhou 350118 China)

机构地区：[1]福建工程学院信息科学与工程学院,福州350118 [2]智能电网仿真分析与综合控制福建省高校工程研究中心,福州350118

出　　处：《电工技术学报》2020年第19期3996-4008,共13页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51677059);福建省自然科学基金(2018J01622)资助项目。

摘　　要：电池储能电站参与电网暂态稳定紧急控制过程中,电池充放电频率很高,长时间工作会缩短电池寿命。通过大量仿真发现储能电站在参与暂态稳定控制过程中实际工作时间很短,因此需要计算出储能电站最优工作时间。该文建立电池储能的机电暂态模型,通过阻尼转矩法分析储能电站提高电网暂态稳定的机理,同时阐述了其不同容量配置以及接入位置不同对暂态稳定的影响。该文提出并计算了储能电站最优工作时间,在扩展等面积法的基础上,实时在线采集发电机转子转速、功角、电磁功率和机械功率数据,通过数值积分计算出储能电站最优工作时间,在确保电网暂态稳定的前提下尽早退出运行。该理论不仅可以减少电池充放电次数,而且可以使电网在最短时间内恢复稳定。通过电力系统综合分析软件进行仿真,验证理论分析的准确性及工程实用性。When battery storage stations participating in power system transient stability emergency control,the battery charge-discharge frequency is very high,so the long-time operation will shorten the battery working life.It could be found that the actual working time of the energy storage station in the process of transient stability control is very short by extensive simulation.Therefore,it is necessary to calculate its optimal working time.In this paper,the battery energy storage transient model was established.The damping torque method was used to analyze the mechanism of improving the stability of power grid by energy storage station.Meanwhile,the influence of its different capacityconfigurations and different connecting positions was expounded.The data of rotor speed,power angle,electromagnetic power and mechanical power of the generator were collected on-line in time.Based on the extended equal area criteria,the optimal working time of the energy storage station was calculated by numerical integration,which could make it quit operation as early as possible ensuring the stability of the power grid.Through the simulation of Power System Analysis Synthesis Program,the accuracy and engineer-practicability of the theory are verified.

关 键 词：电池储能电站 机电暂态 扩展等面积定则 最优工作时间 

分 类 号：TM712[电气工程—电力系统及自动化] TM732