Mathematical Representation of WECC Composite Load Model

• 作者: Di Shi Ruisheng Diao Yishen Wang Zhaoyu Wang Zixiao Ma
• 来源期刊: 现代电力系统与清洁能源学报(英文)
• 学科: 工学
• 关键词: Composite load model dynamic load modeling mathematical model three-phase motor DER_A model
• 年，卷（期）: 2020,（5）
• 页码范围: 1015-1023
• 页数: 9页
• 分类号: TM714

摘要

Composite load model of Western Electricity Coordinating Council(WECC)is a newly developed load model that has drawn great interest from the industry.To analyze its dynamic characteristics with both mathematical and engineering rigors,a detailed mathematical model is needed.Although composite load model of WECC is available in commercial software as a module and its detailed block diagrams can be found in several public reports,there is no complete mathematical representation of the full model in literature.This paper addresses a challenging problem of deriving detailed mathematical representation of composite load model of WECC from its block diagrams.In particular,we have derived the mathematical representation of the new DERA model.The developed mathematical model is verified using both MATLAB and PSS/E to show its effectiveness in representing composite load model of WECC.The derived mathematical representation serves as an important foundation for parameter identification,order reduction and other dynamic analysis.