Impact of composite dynamic load on the dynamic security region of power systems

A. Xue, Zhenbo Cao, T. Bi, Jin Li
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Abstract

Dynamic security region (DSR) is one of the direct methods focusing on the transient stability of power system. This paper explores the impact of composite dynamic load (CDL) characteristic on the DSR, which including the load model consisting of constant impedance load and induction motor load (ZM), the load model consisting of constant current load and induction motor load (IM) and the load model consisting of constant power load and induction motor load (PM). As the introduction of the composite dynamic load could lead to the differential-algebraic equation (DAE) structure for power system, this paper presents the algorithm for the DSR of power system with DAE structure, after the presentation of DSR algorithm for power system with ordinary differential equation (ODE) structure. It also presents the models for the composite dynamic load, i.e., ZM load, IM load and PM load. And then, based on the simulation results, the DSRs of composite dynamic load are described. Finally, the impact of composite dynamic load on the DSR is summarized.
复合动负荷对电力系统动态安全区域的影响
动态安全区域法是研究电力系统暂态稳定的直接方法之一。本文探讨了复合动态负载(CDL)特性对DSR的影响,包括恒阻抗负载和感应电机负载组成的负载模型(ZM)、恒电流负载和感应电机负载组成的负载模型(IM)以及恒功率负载和感应电机负载组成的负载模型(PM)。由于引入复合动态负荷会导致电力系统的微分代数方程(DAE)结构,本文在介绍了常微分方程(ODE)结构电力系统的DSR算法之后,提出了具有DAE结构的电力系统的DSR算法。提出了复合动荷载的模型,即ZM荷载、IM荷载和PM荷载。然后,在仿真结果的基础上,对复合动载荷的dsr进行了描述。最后总结了复合动载荷对DSR的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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