The power supply system of a microdistrict with a woodworking plant
Students Name: Shnaider Vladyslav Volodymyrovych
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: The power supply system of plant is a complex consisting of transformer substations, power transmission lines, central distribution points, power receivers, electricity consumers, and relay protection and automation devices that ensure the normal operation of electrical equipment by providing it with quality electricity in the required amount. Basic principles of PSS design: analysis of information about power supplies, their distance to the designed object, passport data of transformers, installed capacity of consumers; ensuring reliable power supply in compliance with all indicators of electricity quality [4] and considering the categorization of consumers for the reliability of electricity supply; considering different types of load and their location on the master plan; the designed scheme should be easy to read, be reliable and high quality, easy to maintain and comply with all regulations; design of the network considering the prospects of design object, taking into account possible connections to the designed power supplies of sub-consumers; the designed PSS must be safe for service personnel, equipped with relay protection and automation devices to unlock short-circuit currents and prevent emergencies at the facility. The object of research is the power supply system of a microdistrict with a woodworking plant. The subject of research - selection of the optimal technical and economic variant of the power supply system and its modes Purpose: design of the external and internal power supply system of the facility with the introduction of advanced technologies for the generation of electricity by its own solar power plant in accordance with applicable regulations. The first step was to analyze the input data regarding the characteristics of the workshops and analyze the input information regarding the residential neighborhood. Accordingly, we proceeded to the stage of determining the calculated electrical loads for each input of the input-distribution device of buildings and hotels, determined the level of reactive power compensation, and calculated the total load [1]. According to this indicator, a two-transformer substation with power dry transformers with a capacity of 4000 kVA each was selected. In the chapter of selection of the scheme of external power supply by technical and economic comparison it was determined that it is economically more expedient to supply the transformer substation with a 10 kV cable line. Having ready data, the schemes of internal power supply are selected, the cables which will supply the designed constructions, in normal and emergency modes are selected and checked. After that, we proceeded to the calculation of short-circuit currents at two points of the designed power grid [2], [3], according to which in the next paragraph we tested the designed equipment according to certain criteria. It is indicated on the basis of which cell types it is necessary to install a complete transformer substation.