2024/05/14 by Tianwei Xia, Zhe Yu, Xia, Tianwei +7 · 1 citation
Engineering · #FOS: Electrical engineering #Power System Optimization and Stability #Real-time simulation and control systems #Systems and Control (eess.SY) #Thermal Analysis in Power Transmission #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2405.08800
openalex publication_date 2024/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In a power system, when the participation factors of generators are computed to rank their participations into an oscillatory mode, a model-based approach is conventionally used on the linearized system model by means of the corresponding right and left eigenvectors. This paper proposes a new approach for estimating participation factors directly from measurement data on generator responses under selected disturbances. The approach computes extended participation factors that coincide with accurate model-based participation factors when the measured responses satisfy an ideally symmetric condition. This paper relaxes this symmetric condition with the original measurement space by identifying and utilizing a coordinate transformation to a new space optimally recovering the symmetry. Thus, the optimal estimates of participation factors solely from measurements are achieved, and the accuracy and influencing factors are discussed. The proposed approach is first demonstrated in detail on a two-area system and then tested on an NPCC 48-machine power system. The penetration of inverter-based resources is also considered.