Browsing by Author "Mustafa, Mohd"

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    A Hybrid PSO-ANFIS Approach for Horizontal Solar Radiation Prediction in Nigeria
    (ELEKTRIKA-Journal of Electrical Engineering, 2019-08-31) Otuoze, Abdulrahaman; Salisu, S; Mustafa, Mohd; Mamunu, Mustapha; Mohammed, OO
    For efficient and reliable hydrogen production via solar photovoltaic system, it is important to obtain accurate solar radiation data. Though there are equipment specifically designed for solar radiation prediction but are very expensive and have high maintenance cost that most countries like Nigeria are unable to purchase. In this study, the accuracy of a hybrid PSO-ANFIS method is examined to predict horizontal solar radiation in Nigeria. The prediction is done based on the available meteorological data obtained from NIMET Nigeria. The meteorological data used for this study are monthly mean minimum temperature, maximum temperature, relative humidity and sunshine hours, which serves as inputs to the developed model. The model accuracy is evaluated using two statistical indicators Root Mean Square Error (RMSE) and Coefficient of determination (R²). The accuracy of the proposed model is validated using ANFIS, GA-ANFIS models and other literatures. Based on the statistical parameters used for the model evaluation, the results obtained proves PSO-ANFIS as a good model for predicting solar radiation with the values of RMSE= 0.68318, R²= 0.9065 at the training stage and RMSE= 1.3838, R²= 0.8058 at the testing stage. This proves the potentiality of PSO-ANFIS technique for accurate solar radiation prediction
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    Smart grids security challenges: Classification by sources of threats
    (Sciencedirect, 2018-12-01) Otuoze, Abdulrahaman; Mustafa, Mohd; Larik, Raja
    Smart grids (SGs) deployments have made power systems operation more efficient by the application of distributed computing schemes in grids’ interoperation. However, these schemes have triggered various security issues which are growing to be of major concerns. Physical attacks, cyber-attacks or natural disasters are major notable form of threats to SGs deployment which could lead to infrastructural failure, blackouts, energy theft, customer privacy breach, endangered safety of operating personnel, etc. Hence, the need to critically examine the security issues aimed at preventing possible threats or failures. In this review, various security challenges and threats are discussed with respect to their possible sources of occurrence. These threats are then classified and a framework for achieving more secured SGs is suggested.
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    Threats and Challenges of Smart Grids Deployments-A Developing Nations’ Perspective.
    (Published by School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia., 2019) Otuoze, Abdulrahaman; Mustafa, Mohd; Ibrahim, Oladimeji; Salisu, S; Mohammed, OO; Oloyede, AA; Gaya, Zubairu
    Considerable efforts in huge investments are being made to achieve a resilient Smart Grids (SGs) deployment for the improvement of power delivery scheme. Unsurprisingly, many developing nations are making slow progress to the achievement of this feat, which is set to revolutionize the power industry, own to several deployment and security issues. Studying these threats and challenges from both technical and non-technical view, this paper presents a highlight and assessment of each of the identified challenges. These challenges are assessed by exposing the security and deployment related threats while suggesting ways of tackling these challenges with prominence to developing nations. Although, a brief highlight, this review will help key actors in the region to identify the related challenges and it’sa guide to sustainable deployments of SGs in developing nations.