【摘要】 鉴于电子电力变压器对提高电力系统稳定性、改善供电灵活性具有潜在优势,在电力系统分析综合程序(PSASP)环境下建立了电子电力变压器稳态模型和暂态稳定模型,研究了基于电子电力变压器的电力系统潮流计算方法,提出了一种含电子电力变压器的电力系统牛顿交替潮流求解算法,利用PSASP的自定义程序功能(UPI)和用户自定义模型功能(UD)实现了电子电力变压器潮流及暂态稳定计算,并对含电子电力变压器的9节点WSCC系统算例进行了潮流及暂态稳定仿真计算。结果表明,建立的模型有效,提出的潮流求解算法收敛性好,电子电力变压器的引入使系统潮流可灵活控制,且提高了暂态稳定性。更多还原

【Abstract】 Electronic power transformer( EPT) has the potential advantage of improving power system stability and supply flexibility. In this paper,both the steady-state model and transient stability model of EPT are established based on power system analysis software package( PSASP). The power flow calculation methods are studied by considering EPT,and the power flow solution based Newton’s alternating method is proposed. With the help of user program interface( UPI) function and user defined( UD) model function provided by PSASP,the flow calculation and transient stability simulation are implemented. Based on 9-bus WSCC system example containing EPTs,the simulation results show the validity of the established model and the good convergence of the proposed algorithm; with the introduction of EPT,not only the power flow can be controlled flexibly,but also the system transient stability can be improved.更多还原