Gunko I. Control of the modes of electric grids with renewable sources of energy, using Smart Grid technologies

Object of the research – local electric systems with solar power plants and small hydroelectric stations. Objective of the research- reduction of electric energy losses in local electric systems by means of coordinated control of solar power plants and small hydroelectric station generation. Methods of research - statistic methods of data processing, generalized methods of similarity theory and modeling, linear and non-linear programming, matrix algebra, decomposition and object-oriented analysis were used for the development of algorithms and programs; for improvement of ACS DSE principles of the theory of automatic control and theory of microprocessor system were used. Theoretical results – for the first time the method of power flows correction in local electric system with renewable sources of energy of different types by means of optimal control of generation power of small hydroelectric stations was developed, this enables to determine the conditions for approaching power flow distribution in sectionalized electric grid to optimal flow distribution by its energy losses ; mathematical model of normal mode of local electric system with solar electric plants and hydroelectric stations was develop for assessment of the impact of the latter on active power losses in electric grid, enabling to determine non-sensitivity zones of automatic control systems of supply sources and establish the order of power flow correction by them in electric grid; method of determination of rational place of distributive electric grids sectionalizing was further developed, the given method enables to evaluate and take into account the impossibility of transporting electric energy of distributed sources of generation in case of failure in electric grid and allows to determine technical-economic effect, obtained as a result of installation of additional switching devices of grid sectioning. Practical result – algorithms and programs of power flows correction in distributed electric grid, sectionalized on conditions of reliability, by means of generation power change of the controlled RSE, first of all, small hydroelectric stations and in future, solar power plants, are developed. Structural scheme of automated control system of power plants, using RSE is improved accordingly, this enables to coordinate the load curves and graphs of power consumption. On the base of the result, obtained in the research – optimality conditions, methods and algorithms, complex of intelligent programs for distributive electric grids system operator support is improved, the given complex is transferred for pilot operation in Public Joint-Stock Company “Vinnytsiaoblenergo”. Results of research are also implemented in educational process of Vinnytsia National Technical University. Branch of application – electrical energy industry.