Operational personnel decision-making supportautomatic system at nuclear power plant generating unitsby criterion of technical economic efficiency with dueconsideration of reliability factors

The results of studies of parameters, characteristics and performance of NPP units by mathematical modeling methods using computer-integrated technologies for their implementation, which allow to simulate many functional states of systems and equipment of NPP units during the simulation experiment are presented. The general structure of interaction of blocks of software complex for analysis of efficiency of work and parametric diagnostics of NPP units with WWER is developed. The structure of the block of programs of parametric diagnostics of equipment of NPP units is presented. The essence of methods and approaches of parametric diagnostics of power unit equipment is considered.

Section: Computer-integrated Components and The Mathematical Methods mentioning

confidence: 99%

Section: Computer-integrated Components and The Mathematical Methods mentioning

confidence: 99%

Section: Literature Data Analysis and Problem Statementmentioning

confidence: 99%

“…This simulation model, methods and approaches to its creation based on the graph theory are described in sufficient detail in [1,[3][4][5][6] and several others.…”

Section: Literature Data Analysis and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Components of Automated Intellectual Systems Supporting Decisions at the Stage of Operation and Equipment Diagnostics of Nuclear Power Units

Yefimov¹,

Pylypenko²,

Potanina³

et al. 2020

Interval Models of Temperature Characteristics of Superheater Separators in Nuclear Power Plant Units With the Capacity of 1000 Mw

Yefimov¹,

Potanina²,

Kavertsev³

et al. 2022

The analysis of the influence of changes in the parameters of steam superheater separators SHS-1000 of nuclear power plant units with the capacity of 1000 MW on the efficiency and safety of their operation, including the temperature characteristics at the nominal and partial operating modes of power units, has been carried out. Based on the experimental data of the thermal tests of the power unit, the temperature characteristic of the second stage of the SHS-1000 has been constructed in the form of the dependence of the temperature change of the heated steam at the second stage of the SHS on the change in the operating mode of the power unit. To create a correct mathematical model of this dependence, taking into account the limited amount of experimental data and the uncertainty of information about the structure and the probabilistic nature of measurement error during testing, the use of numerical methods of interval analysis has been proposed. Interval analysis has allowed to obtain an interval model that describes the receiver, which contains all possible values of the dependence of temperature change of the heated steam at the second stage of SHS on the unit operating mode (the electrical load). It has been shown that in conditions of limited initial data and uncertainty of information about it, numerical methods of interval analysis allow to create interval models of operational (energy) characteristics technological processes and equipment of NPP units with the maximum possible correspondence to real processes and objects, which is important to ensure high efficiency and safe operation of power units.

Computer Simulation of Thermal and Hydraulic Processes in NPP Steam Generator Channels on the Basis of Interval-Iterative Method

Yefimov¹,

Pylypenko²,

Potanina³

et al. 2022

The designing of NPP steam generators, which are complex technical systems, requires a large number of variant calculations, as result of which must be obtained both optimal integral characteristics of steam generators (total heat transfer surface, metal capacity, hydraulic circuits, etc.) and many of their local characteristics (distributions heat flux densities and temperatures, possible amplitudes of their pulsations and others). The complexity of NPP steam generators as technical systems is determined by their multi-parameter, the presence of a complex logical and functional relationship between the parameters, the presence of various restrictions on the change of parameters, the stochastic change of parameters during exploitation. The article presents methods of mathematical modeling of thermal and hydraulic processes in NPP steam generators and modular programs of their calculations in one-dimensional formulation on the example of a steam generator with countercurrent (direct current) mutual motion of the coolant and the working substance. Logical and structural schemes of computer programs of thermal and hydraulic calculations of NPP steam generators are presented.