The LIMINGA substation in the municipality of LIMETE, one of the three nodes of the City of KINSHASA’s HV distribution network, is experiencing operating difficulties due in particular to the absence of an optimal planning sheet, capable of concretely defining the priority areas for intervention. This substation is a key facility in the city, supplying power to the communes of LIMETE, LEMBA, MASINA, MATETE, KINSESO MAKALA, NGABA, KIMBANSEKE, N’DJILI and NGALIEMA. It is therefore of paramount interest to analyze the operating parameters of its 30/6.6 kV and 30/20 kV distribution network in this entity, in order to avoid the alarming situation of load shedding, black pockets and lack of electricity that the population of these communes is often confronted with on a daily basis.
The aim of this analysis is to identify and prioritize the causes of failures in the supply of electrical energy to the Mbanza-Ngungu housing estate in the Democratic Republic of Congo. The context reveals recurring problems impacting the daily life of the inhabitants and the local economy. The problem focuses on the origins of the failures and how to prioritize them for effective intervention. The hypotheses envisaged technical problems (overloading of transformers and cables), and maintenance, consignment and work faults as the main causes. The objectives are to identify the major causes, assess their criticality using the criticality matrix, and prioritize them using the Pareto method. The methodology includes data collection, identification of causes, criticality assessment and prioritization of interventions. The final report will present the results of the analysis and recommendations for improving power system reliability.
This paper aims to explore the various perceptions regarding the origins of frequent electricity interruptions in the Mbanza-Ngungu housing estate.
By gathering the views of residents, the collection aims to provide a comprehensive overview of the potential causes of power cuts in the cité, with a view to improving network reliability.
Residents’ testimonies revealed that power cuts are caused by technical problems such as breakdowns due to outdated distribution equipment, overloading of HTA cables and network power transformers, as well as poor management of energy resources.
Subscribers also expressed their frustration at the slowness of local authorities to resolve problems linked to the supply of electrical energy in their community.
The article concludes that urgent measures need to be taken to solve the energy supply problems in the housing estate in order to improve the living conditions of the residents.
This article highlights the contribution of a teaching material aimed at the understanding of physical laws for students following the scientific humanities. These laws include Ohm’s law and Pouillet’s law. The research shows that the use of didactic material in a physics lesson increases the satisfaction of the students with an increased success rate of 13, 24 % compared to a lesson without didactic material. Therefore, it is essential for a teacher who wants to improve the understanding of these laws to use appropriate and adequate teaching materials. We propose MAT MAF, which has shown satisfactory results.
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