Sikorska O. Dispersed generation in the problems of increasing the energy efficiency of distribution electrical networks

The dissertation presents a new solution of the current scientific and applied problem of increasing the energy efficiency of electric networks with renewable energy sources, which differs from the known use of sensitivity analysis and criterion modeling, which in the complex allowed to increase the efficiency of local electrical systems using renewable energy sources. Scientific novelty of the obtained results: 1. For the first time with the use of mathematical modeling and the results of field experiments the influence of different types of renewable energy sources on the energy efficiency of distribution networks was shown, which allowed to formulate conditions for complex solution of the problem. quality, as well as increase reliability, and allows you to develop phased implementation of measures to improve the efficiency of electrical RES. 2. The method of determining the interaction of electrical networks of different voltage classes by taking into account the mode of operation of renewable energy sources in networks of lower voltage classes by specifying the directions of power flow and its value at the point of connection to networks of higher voltage classes. 3. Improved, using the sensitivity analysis apparatus, the method of forming measures to reduce losses in electrical networks, taking into account their impact on the quality of voltage in them, in particular by using photovoltaic stations in the mode of reactive power compensation. The practical value of the work lies in the fact that on the basis of the performed research the urgent problem of ensuring energy efficiency and quality of power supply in distribution electric networks with renewable energy sources is solved. The results of the research create a sufficient scientific basis for determining the impact of RES on the quality of electricity supply at different levels of locality, namely, both individual consumers and settlements, and energy supply companies in general. Key words: electric networks, dispersed energy sources, electricity losses, electricity saving measures, performance quality indicator, sensitivity analysis, energy efficiency.