Analysis of the Influenceof the Inverter Electric Vehicle Charging Stations on the Quality of Consumer Power Supply in 10/0.4kV Electrical Networks

Abstract

At present, the share of capricious customers in the market, that imposes increased requirements on the quality of power supply, has significantly increased. Moreover, recently the issues of increasing the environmental friendliness of technological production, the exergy component and energy saving are of particular relevance. Therefore, when organizing and designing power supply systems, a more correct solution would be to use an inverter-battery backup power supply system. Such a system will ensure reliable and uninterrupted operation of consumers in the building. At the moment, there is no alternative to road transport that is more convenient, affordable, in demand, and at the same time less harmful in all spheres of life. The volume of emissions per year in the world is more than 25 million tons of pollutants of various origins, which account for 23% of all greenhouse gas emissions in the world. The paper considers the solution of the problem of designing the inverter mode of the power supply system for connecting the charging station of electric vehicles to the substation of Novosibirsk. The connected charger of an electric vehicle, being a non-linear load, leads not only to an increase in the load on the power grid infrastructure, but can also be a source of power supply. Special attention is paid to the analysis of the quality of power supply during the operation of the charging station using the model developed in the MATLAB Simulink package for the analysis of higher harmonics in an inverter mode.