The Characteristics and problems of power grid structure in Heilongjiang are analyzed, and the relations between power grid structure and transient stability are illustrated.
分析了黑龙江省电网网架结构特点及存在的问题，阐述了电网结构与暂态稳定的关系。
Most of the numerical simulations of the research of PEMFC concerned about its characteristics in the state of stability, there are very few studies have focus on the transient process.
大多数关于PEMFC数值模拟的研究关注于其在稳定状态下的特征，只有很少的是直接研究瞬态过程的。
For the complex, time-varying characteristics of power system, a smart model for transient stability assessment and control is proposed.
针对电力系统运行方式复杂、时变的特点，提出了智能化暂态稳定评估与控制模型。
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