Inter-Area Oscillation Damping: A Fuzzy Logic based Wide-Area Load Shedding\Generation Rejection Scheme

Authors

School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran

Abstract

In this paper, a new inter-area oscillation damping approach is proposed based on system-wide measurement data. The load shedding and generation rejection are the main tools which are utilized for inter-area oscillations damping purpose. The proposed scheme is a defense plan deployable whenever the performance of existing controllable devices, say FACTS, are inadequate. The proposed method is founded on the basis of a four-layer framework including data acquisition, oscillation detection, decision making, and application layers. The decision making process is based on the Fuzzy logic engine. The input signals are rotor angular velocity and its associated derivative; besides, the outputs of the new defense plan are the load shedding or generation rejection commands. Comprehensive simulation studies on a two-area system confirm validity of the proposed scheme under various situations.

Keywords