Frequency reduction effect on the performance of thermal power plants

Abstract

This research study the effect of frequency reduction of national electric net on the thermal power plant efficiency. The Baiji thermal station was selected as mathematical model. This steady showed that the frequency reduction due to the increasing of load in the national electric net from 50 Hz to 49 Hz causes that the plant efficiency decrease from (35.9%) to the (33.5%), and the overall efficiency was decreased to 31.3% at 48 Hz because the relationship between this decreasing with the induction working motor in the plant