Modeling the Impact of Electric Vehicle Charging Systems on Electric Power Quality

Abstract

Recently, there has been dynamic development of electromobility. This trend is predicted to grow exponentially, which will contribute to the creation of an extensive infrastructure of electric car charging points. For distribution network operators, this implies that in addition to the increase in demand for power and electricity, the number of converter systems connected to their networks will also increase. It is therefore necessary to determine the potential impact of electric vehicle charging systems on electricity quality. To this end, the authors of the present study developed simulation models based on measurements of the actual charger and the data provided by the manufacturers of the equipment and using simulation models widely described in the literature. On the basis of the study results, the impact of electric car chargers on electric power quality was assessed, and attention was given to the opportunities offered by the development of charging systems with vehicle-to-grid (V2G) functionality. Changes in technical standards aimed at selecting power supply cables by considering their heating under the influence of higher current harmonics generated by converter systems were proposed.

The Development of Electromobility in the European Union: Evidence from Poland and Cross-Country Comparisons

“…Since 2008, Poland has been a net importer of hard coal, with its imports exceeding exports by a record 14.3 m tons in 2018 (Table 2). The current situation results from a number of factors: lower global coal prices, longstanding deficiencies of the Polish mining industry, and the general coal phase-out in favor of environmentally friendly renewable energy sources [20] as well as the EU climate policy, which leads to the increased prices of CO 2 emissions allowances (EUA), and the decreasing competitiveness of coal generated energy [21]. Setting increasingly ambitious climate goals in the European Union indicates that departure from coal as an energy carrier is decided.…”

Short Circuit Effects on HV Feeders of Optimally Located Electric Vehicle Fast Charging Stations

“…The simulation results showed that the effects of voltage dips on chargers are not only related to the strength and types of voltage dips but also to the operating condition of the chargers [12]. They examined the current state of the EV market, standards, charging infrastructure and the impacts of EV charging on the grid [13]. They examined the challenges and opportunities of Electric Vehicle Charging Stations (EVCSs).…”

Modeling of Electric Vehicles as a Load Of The Distribution Grid

“…Models aimed at providing EV electrical representation can be derived from simplified mathematical notation [12], circuit-based approaches [13], measured data modeling, and big data measurements [14]. Models that allow the electrical representation of the EV to handle both the power demand and its nonlinear properties simultaneously are generally circuit-based [15]. However, this approach has a high computational load, making it a disadvantage for its applicability in large network evaluations.…”

“…A new bidirectional charger for EVs is proposed in [16]; this circuit model describes the electrical representation of the charger through an average model technique that reduces the computational load relative to other circuit-based models. In [15], the electrical behavior of the charger is represented by the AC-DC rectifier-converter and the battery as a Thevenin equivalent. Built using a pulse width modulation controller, this model can represent the change in current power demand as a function of SoC level.…”