Dominican Republic. – The Dominican automotive market is immersed in a transformation as a result of the arrival of electric vehicles. This fact goes hand in hand with the energy transition in which the world is located to counteract the dependence on petroleum-derived fuels.
However, in the face of a massive insertion of electric vehicles in the networks of the National District, there would be radical effects in terms of technical losses, voltage drop and current intensity in the power supply of the network and the individual demand of the circuit.
This was determined by the study “Potential energy impact of electric vehicles in the distribution network of the National District, Dominican Republic”, which was published in the journal “Science, Engineering and Applications” of the Technological Institute of Santo Domingo (INTEC), and He was in charge of the teachers of the Area of Engineering Miguel Aybar and Elvin Jiménez, along with the students at the end of the Electrical Engineering degree, Edison Álvarez, Henry Caraballo, Robinson Gómez, Manny Montero and Israel Soto.
“The maximum demand that would be in the power transformers would cause them to work very close to their nominal power, and in other cases, the demand would exceed the capacity of the transformer,” says the study.
The investigation indicates that the infrastructure of the distribution network of the National District is not in the capacity to supply the demand produced by electric vehicles, and as its penetration increases so will the economic losses, due to the current tariffs in relation to the Average price defined by the Dominican Corporation of State Electric Companies (CDEEE). The circuits evaluated in this research belong to the Distribuidora de Electricidad del Sur (EDESUR), taken for access to information and the simulation platform, which allowed to develop the scenarios of load flows of vehicles in their concessioned distribution networks .
According to statistics from the General Directorate of Customs for 2017, 28 electric vehicles entered the country, and by 2018, another 39.
The study determined that EDESUR should initiate the processes of readjustment and updating of the electric distribution networks, with a view to the process of energy transmission in the electric mobility that it is beginning to develop, because several factors are considerably affected by the insertion of the electric vehicles of the transport matrix of the Dominican Republic.
Among the factors is the maximum demand in the power transformers in distribution, the voltage drop in the nodes of the system, the technical losses and the current intensity that circulates through the feeders of the circuits.
“From the economic point of view and considering the current conditions of the distribution networks, the financial losses of the electricity distribution companies would increase as the demand for electric vehicles increases, this causes the distribution business to be less profitable and demand a reconstruction that reduces the associated technical losses ”, the study establishes.
Despite this perspective, at present some Dominican financial intermediation entities have opted to provide their customers with clean energy to charge their vehicles, with the installation of photovoltaic charging stations.