FEASIBILITY ANALYSIS OF CONTROL-LOOP INTERACTION COMPENSATION FOR A FOSSIL-FUEL POWER PLANT

摘要

Fossil-fuel power plants are complex systems currently being required to take on load-following duties with full-range variations in power generation. Most of their control systems consist of decentralized PI control loop configurations supplemented with ad-hoc compensation schemes, intended to minimize the effects of interaction among the control loops caused by the non-linear coupled process dynamics. This paper analyses the viability of an inverse decoupling compensation scheme to lessen control loop interaction to ease wide-range power generation control throughout the power plant operating space. The proposed compensator introduces compensation factors among the control signals, which can be systematically determined from an equivalent process gain matrix that conveys all required information about control loop interaction.