MV Drive Solution for Boiler Feed Water Pump
Application: Boiler Feed Water Pump with 6.6kV VFD Replacing existing throttling control with VFD, benefits and energy savings
Given the efficiency problem of boiler feed water pumps driven by fixed speed motors at partial loads, the most economic control is achieved with a variable speed drive system.
Discussion started with energy saving based proposal from Ethan Power Pvt. Ltd.
After evaluating complete data and energy saving report procurement process started and by converting this order to turnkey package of civil & electrical end to end solution we could limit the competition securing a turnkey order including 1600KW, 6.6KV VFD, 2MVA transformer and Bypass Isolator panel for achieving 2 motors with 1 VFD scheme, VFD and bypass DOL scheme.
Further savings can be achieved by designing a new generating unit’s electricity distribution network for feed-water pumps operated by frequency converters. As main loads, their across-the line starting behavior typically impacts on – depending on impedance of the plant transformer- capital cost, either through a more expensive transformer,through higher fault currents, or a more expensive switchboard. Variable speed drives as such act as soft starters and cause no starting current peaks.