【摘要】 利用储能技术可以有效缓解、抑制电力系统的功率不平衡问题,提高电力系统运行水平。首先研究了结合储能设备和电力电子技术的并联储能型柔性交流输电(flexible AC transmission systems,FACTS)装置的潮流和暂态数学模型;然后在电力系统分析综合程序中基于注入功率法建立了潮流的用户自定义模型,暂态建模则采用节点注入电流法;最后在美国电力科学研究院7节点实验系统中加入并联储能型FACTS装置,进行潮流和暂态稳定计算。结果表明,潮流计算的收敛性良好,自定义模型通过调节无功功率较好地控制了母线电压。暂态稳定计算中并联储能型FACTS装置较好地抑制了发电机的功角摆动,有效提高了电力系统稳定性。更多还原

【Abstract】 The energy storage technology can effectively relieve and restrain unbalance power in power system by providing quick responded power, so it can improve operation level of the power system. In this paper, firstly the power flow model and transient process model for parallel flexible AC transmission systems (FACTS) device, which combines with energy storage system (ESS) and utilizes power electronic technology, is researched; then based on power injection and nodal current injection, a user-defined model for power flow model and transient mathematical model are respectively built in power system analysis software package (PSASP); finally the model of parallel FACTS device with ESS is added to EPEI-7 system by which the calculation of power flow and transient stability are performed. Calculation results show that the power flow calculation can be well converged and the by means of regulating reactive power the user-defined steady model can control bus voltage well; calculation results of transient stability show that the angle swing of generator can be well restrained by parallel FACTS device with ESS, so power system stability is effectively enhanced.更多还原