Voltage and Frequency Stabilization of Electrical Networks by Using Load Shedding Strategy Based on Fuzzy Logic Controllers

摘要

We present, in this paper, the analytical development of a new load shedding strategy based on fuzzy regulators. The aim of this strategy is to ensure the voltage and frequency stability of an electrical network. The strategy foundation is based on the sensitivity evaluation, in real time, of generated powers by alternators in relation to injected power levels at different network buses. Indeed, any variation of the power transit levels, taking place at the time of a disturbance appearance affecting the electrical network in a specified point, implicitly induced an operation imbalance of different alternators. We took into account, in our strategy, of possible network component dynamic behaviors resulting from the disturbance appearance via an optimized action established by fuzzy controllers.