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Articles by E.V. Kirievskiy
Total Records ( 2 ) for E.V. Kirievskiy
  S.P. Vorobyev , D.V. Shaykhutdinov , E.V. Kirievskiy and V.V. Grechikhin
  The study shows the necessity and features of the design of distributed information-measuring systems of precision multifunctional measuring complexes. The use of the ethernet family standard is the basic technical solution for building the information level. The formulation of a mathematical model of the structure optimization of a distributed information-measuring system which is reduced to a modified clustering problem is presented. It is proposed to use an approach based on a genetic algorithm to solve the problem. The research of the algorithm is performed by analyzing the modifications of the classical algorithm based on the variable mutation, under which the mutation probability varies depending on the needs of the algorithm. Results of numerical experiments showing the advantage of the proposed formulation of the problem for constructing the architecture of a distributed information-measuring system are presented.
  S.S. Kostinsky , V.A. Mokhov , D.V. Shaykhutdinov , E.V. Kirievskiy , A.S. Vlasov and A.M. Lankin
  Load in the utility network is predominantly non-linear and generating the highest harmonic components of current in the electrical power network, increases in the overall structure of electricity consumption. The results of experimental measurements and calculations for a number of household consumers as well as information from literature sources noted in the article indicate that the operation of modern appliances in electrical power networks generates sufficiently large currents of higher harmonic components of 3, 5, 7 and 9 orders of magnitude. The main share of emission of the current harmonic components in the city electrical power system networks is made by recreational and household appliances (computers, laptops, printers, TVs, etc.). Continuous growth of the specified capacity of nonlinear asymmetric and sharply variable loads in the electric power networks is not followed by timely implementation of solutions aimed to improve the quality of electrical energy, so, in recent years, the task of improving the quality of electricity associated with reducing the impact of higher harmonic components on the operation of electrical equipment is becoming more and more urgent and important. The listed measures and technical means of influence reduction of the higher harmonic components are considered in the article in details.
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