Study & Analysis of Conservation of Energy With VFD

Booming demand for electricity, especially within the developing countries, has raised power generation technologies. At the same time the discussion about causes of global warming has focused on emissions originating from power generation and on CO2 reduction technologies such as Alternative primary energy sources, Capture and storage of CO2, increasing the efficiency of converting primary energy content into electricity.Concerning the third focus point, relatively little attention has been paid to the efficiency of auxiliary processes in thermal power plants, which account for about 5-8% of the gross generating capacity. Examples of auxiliary processes in thermal power plants are Conveying and preparing the fuel, Moving the necessary air into the furnace, Moving the fuel gases from the furnaces, Returning the condensed water heater to the steam generator, Maintaining the required cooling effect within the condenser and Operating various emission cleaning processes.A majority of these processes are run by centrifugal pumps, fans and compressors driven by electrical motors.This paper presents the implementation of variable frequency drives for the Induced draft fan. It is a case study on energy conservation by using variable frequency drive at Thermal Power station