Modeling of inductive constant power load for electromagnetic-transient simulations-Part II

作     者：Alboaouh, Kamel Velaga, Yaswanth Nag Prabakar, Kumaraguru 

作者机构：Norfolk State Univ Dept Engn Tech 700 Pk AveRTC BldgSuite 420M Norfolk VA 23501 USA Nat Renewable Energy Lab Power Syst Engn Ctr Golden CO USA 

出 版 物：《ELECTRIC POWER SYSTEMS RESEARCH》 (Electr Power Syst Res)

年 卷 期：2025年第242卷

核心收录：

学科分类：0808[工学-电气工程] 080802[工学-电力系统及其自动化] 08[工学] 

基　　金：National Renewable Energy Laboratory, NREL U.S. Dep Office of Science - Office 

主　　题：EMT simulator Constant-power-load Numeric modeling Load modeling 

摘      要：This paper improves the dynamic constant power (CP) load model that was published in Part I, which is appropriate for electromagnetic-transient (EMT). The improved model conserves all features of its predecessor. For instance, it maintains a fixed power consumption (both active and reactive parts) and a fixed power factor for loads that are predominantly inductive. Furthermore, as the proposed model is a time-dependent system, it is applicable to both sinusoidal and non-sinusoidal case studies. However, the previous model cannot be easily integrated with numeric solvers because it simulated load data over one cycle all together, not sequentially in a time-step manner, due to the limitation involved with the power factor. The improved version, on the contrary, allows the load to be simulated at every time step, which would facilitate its integration with numeric solvers. The model s validity is confirmed by comparing its response with data that is synthesized from constant impedance load, and the result is satisfactory.