Photovoltaic fault diagnosis algorithm using fuzzy logic controller based on calculating distortion ratio of values

Introduction. The efficiency of solar energy systems in producing electricity in a clean way. Reliance on it in industrial and domestic systems has led to the emergence of malfunctions in its facilities. During the operating period, these systems deteriorate, and this requires the development of a diagnostic system aimed at maintaining energy production at a maximum rate by detecting faults as soon as possible and addressing them. Goal. This work proposes the development of an algorithm to detect faults in the photovoltaic system, which based on fuzzy logic. Novelty. Calculate the distortion ratio of the voltage and current values resulting from each element in the photovoltaic system and processing it by the fuzzy logic controller, which leads to determining the nature of the fault. Results. As show in results using fuzzy logic control by calculating the distortion ratio of the voltage and current detect 12 faults in photovoltaic array, converter DC-DC and battery

Comprehensive review of radial distribution test systems for power system distribution education and research

A comprehensive review of existing radial distribution test systems available for power system distribution research is presented. The review can be used to establish a record of cases suitable for distribution operation and planning studies. The importance of the distribution system, the structure of the system in the grid, and various configurations of the distribution network are discussed. The primary requirement of a distribution network is highlighted to underline the important system parameters that should be considered in the design and planning stages. Various research related to the distribution network can be conducted, such as load flow algorithms, optimal incorporation of distributed generation, network reconfiguration, and optimal capacitor allocation, such as important details pertaining to each test system are given. Additional information, such as active and reactive loads and losses, minimum voltage values, and bus location with the weakest voltage values, is provided. Application of the reviewed works based on the test system is tabulated and presented. The information presented in this paper will be beneficial for future research in distribution system design and planning

Postcolonial internationality of Algerian Social Academics

International audienceAlgerian research in literature and sociology continues to remain very marginalized in the international scientific arena. Globalisation has not made it possible to move from colonial dependency to global equal opportunity. To the contrary, dependency on France and the French language has re-emerged as a way of gaining access to Europe and the English-speaking world, and while the “international” has become a buzz-world and a model in Algerian research, in fact internationalisation has lost in quality what it has gained in quantity. Nevertheless, the inegalitarian structure of the international scientific space is not immutable. Activists’ desires to reduce international scientific inequalities have borne fruit, particularly in the Arabophone international space, but also in the Francophone one. Moreover, not all researchers view internationalisation as a desideratum: while the discourse of de-Westernizing science seems to have got lost, some researchers, volens nolens, believe that the national political role of their research is more important than their international visibility