Load frequency control of micro hydro power plant using fuzzy logic controller

Abstract

Micro-hydro power plants (MHPP) are usually built on mountains to provide electricity for rural areas. Most of MHPP are isolated from national electrical grid network, which requires a good control system to keep the MHPP frequency and voltage outputs constant in spite of changing user loads. This paper addresses a comprehensive literature survey on load frequency control in micro hydro power plant and aimed to present a design of fuzzy logic based controller that would manage almost the whole operation of the generating unit. The presented fuzzy logic based controller has three main tasks. First, it regulates the frequency output of the plant in spite of changing user loads. Second, it limits the waste of the available water. Finally, it manages the electricity distribution by dividing the mini network on different departures connected in order of priority.