Optimizing coal-fired power plants for efficient operation at minimum generation levels
presents a significant challenge. A key component impacting efficiency is the boiler feed pump
system responsible for delivering water to the boiler. This system often utilizes boiler feed
pump turbines (BFPTs) powered by steam bled from the main turbine. However ensuring stable and
efficient operation of BFPTs at low loads can be difficult.This research tackles this challenge
by employing high-fidelity modeling. Using specialized software like Flownex a highly accurate
digital replica of a typical boiler feed pump system will be created. This model will encompass
not only the BFPT itself but also its associated steam feed pump standby electric feed pumps
and the surrounding environment like steam admission valves and condenser back pressure.By
analyzing this model under various operating conditions researchers can gain valuable insights
into the behavior of BFPTs at low loads. Case studies will explore the impact of different
steam supply conditions valve control strategies and leak-off valve philosophies. These
simulations will provide valuable predictions and recommendations for optimizing BFPT operation
at low loads ultimately improving the overall efficiency and cost-effectiveness of coal-fired
power plants.
