DEVELOPMENT OF POSSIBILITIES OF THE METHOD OF INDIVIDUAL COMPONENTS FOR ANALYSIS OF MODES IN ELECTRICAL SMART- COMPLEXES
Authors: Denysiuk S. , Kolomiichuk M. , Melnychuk H. 
Published: October 2021

The peculiarities of the formation of the local power system according to the concept of Smart Grid requires a qualitatively new architecture of the power supply system and new principles of operation - both at the level of technical solutions and mechanisms of organizational interaction at the technological level and financial calculations. The scientific and technical problems connected with functioning of separate types of electrotechnical Smart-complexes (ETK-Smart) are analyzed, features of the analysis of electrotechnical complexes with nonlinear elements by the analysis of processes in case of changes of active and reactive loadings that allows to consider corresponding changes of parameters at calculations of electromagnetic processes using analytical methods. The methodology for assessing the impact of conductive periodic interference on the flow of the steady state in electrical Smart-complexes has been improved. The principles of analysis (modeling) of ETC- Smart as systems with periodically changing parameters are considered. It is shown that the use of ETC-Smart requires meticulous attention to the analysis of steady-state and transient, including modulated, modes, in the case of formation of different schedules of energy and technological processes, power supply of various types of loads, etc. Algorithms for calculating currents in electrical complexes with cyclically variable parameters, as well as analysis of the influence of periodic conductive interference in ETC-Smart elements with power converters based on the development of the capabilities of the method of individual components in modeling steady-state modules. Thus, algorithms for analysis of electromagnetic processes in ETC-Smart with variable parameters and RL-load for complex periodic, system analysis in case of nonlinear elements, analysis of internal resistance of generator and transmission lines, analysis of processes in abrupt change of parameters of reactive elements (inductance L) and capacitance C), analysis of the influence of periodic conductive interference (AC and DC) on electromagnetic processes in the elements of ETC-Smart with power converters The basics of methodological support for assessing the energy efficiency of ETC-Smart as elements of intelligent power supply systems are presented. The algorithm of electrotechnical inspection (energy audit) of electrotechnical complexes by application of the offered analytical expressions and the generalized algorithm of calculation of electromagnetic processes in electric complexes with cyclically variable parameters is offered that allows to carry out the corresponding estimations of energy efficiency of functioning. The concept of formation (construction) and modernization of optimization of elements of Smart-technologies for the Smart-microdistrict of the intellectual city by development of algorithm of realization of the corresponding researches and estimations and formation of the Microgrid network (ETC-Smart with power converters) of several levels of hierarchy is offered. and assessment of the general energy efficiency indicators of the Smart-microdistrict of the intellectual city. The presented examples of analysis confirm the effectiveness of the modification of the method of individual components for the analysis of steady-state ETC-Smart.