Integration Analysis of Electric Vehicle Charging Station Equipped with Solar Power Plant to Distribution Network and Protection System Design

Abstract

The improvements and implementation of new generation equipment to the conventional grids are increasing along with the increase of the number of renewable energy power plants and smart grid components. The existing grid infrastructure is required to be modified and upgraded as a result of the increasing integration of the renewables and new generation consumers where the availability of the existing networks has to be analyzed for integration as well. In order to keep the grid stable and integrate the renewables to the grid optimally, necessary analyses have to be realized including the investigation of the optimal integration criteria. During the integration phase of the new generation consumers and producers, two ways power flows and variable power production of renewables have to be considered for system design. In this study, analysis for optimal sizing and integration studies are performed for electric vehicle parking lot and solar power plants located on the campus distribution network considering optimal sizing criteria and the aim of stabilization of voltage regulation during day time operation of solar power plant and random charging profile of electric vehicles. The proposed network is equipped with adaptive protection system to ensure stability and the reliability of the distribution network in the concept of smart grid.

Aggregated Electric Vehicle Fast-Charging Power Demand Analysis and Forecast Based on LSTM Neural Network

“…The proposed framework enables to help an efficient power system operation, such as stability analysis and the energy management system (EMS). For example, the estimated value of integrated EV charging demand is fed into an adaptive protection system for stabilization of voltage regulation in distribution network [36]. Forecasting results can also be used to the cost-efficient EMS in which optimal scheduling of public EV charging stations is performed to minimize the cost of energy to charge the EVs [37].…”

Solar Energy Based Charging for Electric Vehicles at Fuel Stations

“…The mathematical modelling of solar energy and EV charging synergy has been studied by many researchers; however, in most cases the modelling was carried out with the focus on economic perspective [8]. or grid operation perspective [5]. However, while evaluating the environmental aspects of the synergy effects, researchers point out that application of similar business model can produce significantly different result in different geographic regions, e.g., in European countries the impact of such synergy can be higher than in many other regions [3], [9].…”

“…They identify that with the help of an appropriate pricing policy for charging services, there is a great potential to reduce the need for grid usage and power storage equipment, thus also benefiting the overall carbon emission impact of EV [3], [4]. However, several studies indicate that with the current overall penetration of EV in the transport system and the remaining price differences between the purchase price of FV and EV, the public charging services require public subsidies for their development at more rapid pace [1], [5], [7]. The overall situation in the energy market and trends in the global car industry may also change the economic perspectives of EV charging services significantly -in relation to growing prices for both fossil fuels and power.…”

Related Work and Motivation for Electric Vehicle Solar/Wind Charging Stations: A Review

“…Charging stations facing similar challenges and objectives might effectively replicate the INSPIRIA charging station as a model pilot case to enhance both the electrification of transportation and the exploitation of RESs. Turan and Gökalp [34] examined the ideal sizes for solar power facilities and parking areas for EVs connected to the Yildiz Technical University's campus grid in Istanbul, Turkey. The comparison between the recommended protection system and the conventional protection approach reveals that in specific substations with fluctuating loading and voltage management, the protection system's duration is reduced by 20%.…”