【摘要】 如今，可变速抽水蓄能技术已成为一种新趋势，为电力系统的脱碳提供更好的支持。本文旨在研究大型可变速抽水蓄能发电电动机的功率特性，通过最大转子电流限制、最大定子电流限制、最大转子电压限制和静态稳定极限可以绘制可变速电机的功率圆图，用于规定可变速电机的安全稳定运行范围，可直观得到所设计电机的滞相和进相运行能力并评估转子设计功率。本文详细推导出了功率特性分析数学模型，并对一台300 MW大型可变速样机进行了功率特性分析，提出了定、转子功率圆图绘制方法，绘制了其功率圆图，并对其静态稳定性进行了详细分析。更多还原

【Abstract】 Nowadays, variable-speed pumped storage technology has become a new trend to provide better support for the decarbonization of power systems. The purpose of this paper is to study the power characteristics of large variable-speed pumped storage electric motor. The power circle diagram of variable-speed electric motor can be drawn through maximum rotor current limit, maximum stator current limit, maximum rotor voltage limit and static stability limit, which can be used to specify the safe and stable operation range of variable-speed electric motor by which to intuitively obtain the operation capabilities of lagging and leading phase of the designed motor and evaluate the designed rotor power. In this paper, the mathematical model of power characteristic analysis is derived in detail, and the power characteristic analysis of a 300 MW large-scale variable-speed prototype is carried out. The drawing method of stationary and rotor power circle diagram is proposed, and the drawing of its power circle diagram is carried out, and the static stability is analyzed in detail.更多还原