FIELD: power generation.
SUBSTANCE: invention relates to the field of monitoring, predicting, and optimising the parameters of operation of power units of power plants. Method for comprehensive optimisation of the parameters of a power unit including the following assemblies: a steam turbine set and a gas turbine set, a waste-heat boiler, and a heating set, is based on the simultaneous use of a reference model and prompt and continuous monitoring of the operating parameters and the working state of the assemblies in real time, including the acquisition of data characterising the indicators of technological parameters of operation of the controlled object via a system of sensors integrated into the standard automated process control system of the unit in real time, as well as the values of the parameters of the external environment, wherein: the quality of measurements is automatically analysed, unreliable data transmission channels and sensor failures are identified, data is corrected by statistical methods, the mode of operation of the equipment is determined based on combinations of the values of process parameters and dynamics thereof; the "instantaneous" rated thermophysical parameters of the unit are determined based on the initial rated indicators of the assemblies; the "instantaneous" thermophysical properties of the working fluid are determined, and the actual technical and economic indicators (TEP) of the power unit are calculated; the presence of deviations of the actual indicators from the standard values set by the initial rated characteristics of the equipment is assessed, the cumulative losses for the period are calculated, and the energy efficiency is controlled; the actual TEP of individual components of the power unit are calculated in dynamics for the primary confinement of fuel inefficiency; the presence of deviations of the actual indicators from the standard ones is analysed, and the TEP of assemblies showing significant deviations from the required rated values are identified; the actual values of process parameters are monitored, and a reference model of operation of the power unit is formed based on a sample from the array of retrospective parameter values with automatic adjustment when the primary data signifying the failure of sensors is changed. The actual operation indicators are compared with the selected optimal values, and the complex of actions aimed at eliminating inefficiency is determined: the system parameters are changed towards the targets set by the model scenario, and repair and maintenance measures are taken for the corresponding components of the assemblies.
EFFECT: maximised long-term effect of the use of power equipment, including that with account to the repair and maintenance costs and energy efficiency throughout the entire life cycle of the power generation plant, in particular: 1) possibility for variation of the working settings during operation and modelling of the TEP of the power plant for the purpose of achieving maximum energy efficiency (performance coefficient); 2) transition from the model of scheduled preventive repairs to condition-based repairs based on identifying and predicting the occurrence of defects, leading to a greater resource of the equipment complex (power unit).
1 cl, 2 dwg
