The power supply system of the metal-ceramic products plant
Students Name: Shpak Iryna Rostyslavivna
Qualification Level: magister
Speciality: Power Supply Systems and Energy Management
Institute: Institute of Power Engineering and Control Systems
Mode of Study: full
Academic Year: 2022-2023 н.р.
Language of Defence: ukrainian
Abstract: Currently, there is a war and a difficult economic situation in Ukraine, but the construction of residential quarters with an increased level of comfort and improved planning continues. Ensuring comfortable conditions and functioning of all systems of such buildings requires a reliable power supply with appropriate power quality indicators. The development of a modern and reliable scheme of power-supply system of residential complexes is complicated and important task, which is topical in nowadays. The research object is the power-supply system of a residential complex. The research subject are methods of calculation of estimated loads and comparative analysis of power supply schemes’options in order to select the best option in accordance with economic indicators and reliability indicators. The aim of the work is to develop schemes of external power supply of the residential complex, and schemes of internal networks of apartment buildings in accordance with the regulatory requirements that ensure reliable power supply of the microdistrict using solar panels. The economic efficiency of the electricity supply system was taken into account by the method of discounted costs. Taking into account the technical and economic indicators, the cables were selected, as well as the voltage supply line of the receiving point of residential complex, which is 10 kV. To minimize energy and voltage losses in the supply and distribution networks of the power supply system of the residential complex, the center of electrical loads is determined and the designed transformer substation is located closer to the CEN from the supply side. The developed power-supply system is universal and easily adapts to some variation of initial conditions, and also the possibility of its further development is provided. For internal buildings networks, circuit breakers were selected for protection against short-circuit currents and for switching off load currents, and differential automata – for protection against leakage currents. For financial calculations between the power transmission organization and the consumer for the transmitted/consumed active energy, accounting devices were selected. Also, for house No. 1, we select and calculate the installation of solar panels, select batteries, controllers and inverters for uninterrupted power supply of the house in emergency situations that may arise during attacks on critical infrastructure.