Results

Three papers on grid integration of renewable electricity published in Energy Procedia

Investigation of the voltage quality at PCC of grid connected PV system

- Abstract -

In this paper, we present and discuss the behavior of the voltage in the Algerian Low-Voltage distribution network and the influence of the PV generation. This intermittent availability characteristic will have a local impact on the power quality. Hence, a statistical analysis of the voltage characteristics is shown for the evaluation of the grid at the Point of Common Coupling (PCC) according to the EN 50160 and EN 61000-2-2 standards. The voltage variation, unbalance, flicker severity, total and individual harmonic are presented. It has been found that the voltage at the PCC is in accordance with standards requirements.

The full paper may be found in:  http://dx.doi.org/10.1016/j.egypro.2017.11.013


Connection of the CDER-Algiers photovoltaic system to low-voltage distribution grid

- Abstract -

This work deals with the first photovoltaic (PV) system connected to the low voltage electrical grid in Algeria. The system is made of a PV generator and inverters, which convert the generated direct current into to alternating current, and injects it in the low voltage distribution network of Sonelgaz (Algerian electricity provider). The generated current is perfectly compatible with that supplied by the network. The power of the installed PV generator is 9.54 kWp. In order to produce this power, three sub-fields of I-106 modules are used. Each of these sub-fields is connected to an inverter. This work allowed the study of phenomena related to the PV system connection to the network, namely: power quality, reactive power, current THD and voltage, etc. Electrical parameters at the point of common coupling (PCC) were studied, including the impact of this PV installation on the grid.

The full paper may be found in:  http://dx.doi.org/10.1016/j.egypro.2017.10.311 


Distributed photovoltaic systems in Algeria and control of DC-DC converters for grid integration - an overview

- Abstract -

This paper describes the current situation of the renewable energies (RE) in Algeria and the structure of the national grid. In view of studying the issues of grid integration of injection of renewable energy produced by distributed systems. The main issues to be considered actually in Algeria are the lines upgrade and the protections design, to prepare the near future of large share of renewable electricity in the national energy mix. For grid integration, due to continuously decreasing cost of battery storage, the modeling and the structure of control of a photovoltaic grid connected system is given.

The full paper may be found in:  http://dx.doi.org/10.1016/j.egypro.2017.10.289