Author(s)

Bernard N. Tokpohozin^1,2,3*, Sibiath Osséni^3,4, Jean-Louis Fannou^3,4, Vincent Adigbé⁴, Christian D. Akowanou^1,3

¹National Higher Institute of Preparatory Classes for Engineering Studies (INSPEI), National University of Sciences, Technologies, Engineering and Mathematics (UNSTIM), Abomey, Republic of Benin.
²Institute of Mathematics and Physical Sciences (IMSP), University of Abomey-Calavi (UAC), Porto-Novo, Republic of Benin.
³Laboratory of Sciences, Engineering and Mathematics (LSIMA), National University of Sciences, Technologies, Engineering and Mathematics (UNSTIM), Abomey, Republic of Benin.
⁴National Higher School of Energy Engineering and Processes (ENSGEP), National University of Sciences, Technologies, Engineering and Mathematics (UNSTIM), Abomey, Republic of Benin.

The supply of quality energy is a major concern for distribution network managers. This is the case for the company ASEMI, whose subscribers on the DJEGBE mini-power station network are faced with problems of current instability, voltage drops, and repetitive outages. This work is part of the search for the stability of the electrical distribution network by focusing on the audit of the DJEGBE mini photovoltaic solar power plant electrical network in the commune of OUESSE (Benin). This aims to highlight malfunctions on the low-voltage network to propose solutions for improving current stability among subscribers. Irregularities were noted, notably the overloading of certain lines of the PV network, implying poor distribution of loads by phase, which is the main cause of voltage drops; repetitive outages linked to overvoltage caused by lightning and overcurrent due to overload; faulty meters, absence of earth connection at subscribers. Peaks in consumption were obtained at night, which shows that consumption is greater in the evening. We examined the existing situation and processed the data collected, then simulated the energy consumption profiles with the network analyzer “LANGLOIS 6830” and “Excel”. The power factor value recorded is an average of 1, and the minimum value is 0.85. The daily output is 131.08 kWh, for a daily demand of 120 kWh and the average daily consumption is 109.92 kWh, or 83.86% of the energy produced per day. These results showed that the dysfunctions are linked to the distribution and the use of produced energy. Finally, we proposed possible solutions for improving the electrical distribution network. Thus, measures without investment and those requiring investment have been proposed.

LV Distribution Network, Energy Audit, Mini PV Plant, Malfunctions, Corrective Measures

Tokpohozin, B. , Osséni, S. , Fannou, J. , Adigbé, V. and Akowanou, C. (2024) Stability Study of Low Voltage Electrical Distribution Network: Audit and Improvement of DJEGBE Mini Solar Photovoltaic Power Plant in the Commune of OUESSE (Benin). Energy and Power Engineering, 16, 345-357. doi: 10.4236/epe.2024.1610017.