Pylypenko Y. Recording and Processing of Information in Systems for Monitoring and Evaluation of Electric Power Facilities

The оbject of research: processes in electrical power systems. The purpose of research: improve reliability and safety of electrical power facilities and systems of electricity supply to railways by improving an accuracy of recording equipment parameters and its operating modes, a precise synchronization of recorded information regardless of any location of devices, application new algorithms for processing information. Methods of research: mathematical modeling, methods of approximation and harmonic analysis, digital filtering and experimental metrological researches. Theoretical and practical results and innovations: developed a mathematical model of choosing sampling frequency signals registered in electrical power objects, considering an approximation error and a degree of approximating polynomial, that allows to select its optimal values for different types of continuous processes and, thereby, create a more technically and economically committed devices recording and processing of the information; the first have found out a dependence of error of determining of a phase of recorded sinusoidal signal from an approximation error, a sampling frequency and a frequency of the signal itself, allowing to meet the requirements for precision vector measurements voltage at the ends of power lines when new information technologies in management of power systems are introduced; have offered a method of synchronization measuring modules of recording system parameters of distributed electric power facilities, which bind measured signals transitions through a zero with GPS timeline, allowing to provide for a required accuracy of synchronization measurement data and, on the basis of which, to expand a functionality of management systems and improve reliability operation of electric power facilities. A subject degree of introduction: are used on 12 substations NPC "UKRENERGO" and on one of the traction substations of the Ukrainian Railways. Effectiveness of implantation: the theoretical and practical deliverables received in the dissertation work were used in designing microprocessor-based recording devices for synchronized measurements, systems of monitoring and evaluation of parameters of operating modes of the basic electric power equipment, which installed at the power facilities of the NPC "UKRENERGO" and the Ukrainian Railways. Sphere of use: electric power facilities and power supply systems of railways.