摘要：Wide Area Measurement System (WAMS) can extend and effectively improve the power system
stabilizers (PSS) capability in damping the inter-area low frequency oscillations in
interconnected bulk power systems. This paper proposes the implementation of Weighted Wide
Area Damping Controller (WWADC) in which weighted factors are introduced for each remote
feedback signals. Modal analysis approach is implemented for the purpose of identifying the
optimal location as well as the input signals’ optimal combination of WWADC. Based on the
linearized model, Differential Evolution (DE) algorithm is applied to search for optimal
controller parameters and optimal weighted factors. The successful application of the proposed
approach is achieved in two power networks; the two-area 4-machine system and the IEEE-39
bus 10-machine system. The analysis of the eigenvalue and non-linear time domain simulations
indicate that damping the inter-area oscillations and improving the system stability irrespective
of the severity and the location of the disturbances can be effectively achieved by WADC. .
关键词：Weighted Wide Area Damping Controller (WWADC); Low Frequency Oscillations;
(LFO) ; Differential Evolution (DE)
