Optimization of Quality Metrics for Technological Processes in Energy Control Objects

Abstract

The purpose of the work is to determine a generalized criterion of optimality for quality
indicators of technological processes in energy production to use it in automated control systems
and enhance energy efficiency. The tasks of static and dynamic optimization are complex
(multifactorial) and multi-objective. Their solution is carried out taking into account the variety of
factors and constraints affecting the achievement of the optimal goal function. The work considers a
typical example of optimization problem (when the objective function is maximized), namely the
task of controlling the combustion process in the boiler furnace based on the coefficient of
performance, and when minimized – based on the sum of heat losses. The formulation of the
dynamic optimization problem of control and output influences over time is demonstrated, ensuring
the achievement of specified control criteria for technological processes in transient modes. It is
shown that the criterion of optimality can be the minimum energy loss in equipment. The main
tasks are identified, the solution of which will improve the performance of the equipment and
constraints significantly influencing the choice of optimization method and formation of the goal
function. As an example, a function of energy losses in feed pumps, considering network
parameters and the pumps' own characteristics, is composed. The methodology for determining the
minimum energy loss function in feed pumps and the algorithm for calculating energy losses based
on data obtained through approximation of energy characteristics are presented. The optimality
criterion as the minimum energy loss can be used for any power equipment (boiler, turbine,
combined cycle plant, etc.) and ensure high performance of the equipment.