ENHANCEMENT OF TRANSIENT STABILITY OF POWER-SYSTEMS BY USING FUZZY CONTROLLER

This article proposes the cooperative fuzzy controller for an automati c voltage regulator (AVR) and governor (GOV) to improve the transient stability of power systems. The fuzzy rules to stabilize the power sys tems are selected from general ideas based on the sliding mode control . Both AVR and GOV inputs are determined to satisfy the system's stabi lity and reduce the chattering effect, which is the essential problem of the sliding mode. Therefore, this fuzzy controller acts to improve the transient stability of power systems. By introducing the ideas of sliding mode control, the fuzzy rules can easily be constructed system atically. (C) 1995 John Wiley and Sons, Inc.