Informatics Publishing Limited

Agbetuyi A. Felix ¹, C. O. A. Awosope ¹, H. E. Orovwode ¹, A. A. Awelewa ¹, Ademola Abdulkareem ¹

Affiliations
1 Department of Electrical and Information Engineering, Covenant University, Canaanland, Ota, NG

Abstract

This work investigates the healthiness of the Nigeria distribution grid (the test system) to accommodate the connection of wind turbine generators. The test distribution system is subjected to load-flow analysis; the program was developed in Matlab platform without wind turbine connection. This is necessary to know if the system voltages at each bus remain within specified limits and angle at each bus. The ability of a site to sufficiently accommodate wind generation does not only depend on wind speeds but its ability to interconnect to the existing grid. That is, it is not enough to say that the wind turbines should be connected to the grid just because there are sufficient wind speeds to drive the wind turbine, but the wind turbine generators must be able to connect with the existing grid (which must be healthy enough to accommodate the wind turbine generator).The result shows that the voltage magnitude at each bus is within the specified limit which shows that the network is healthy without wind turbine generators connected. The findings in this research work will give much better insight to potential investors in wind power in Nigeria.

Keywords

Distribution, Grid, Load-Flow, Nigeria, Voltage Stability, Wind Turbine

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T. E. Somefun ¹, A. Abdulkareem ¹, C. O. A. Awosope ¹, C. T. Somefun ², O. Ipinyemi ¹

Affiliations
1 Covenant University, Ota, NG
2 Ladoke Akintola University, Ogbomosho, NG

Abstract

The credibility and validity of attendance system in various institutions of the economy have always been a major issue. The conventional method of marking attendance is not reliable as colleagues or friends can sign for each other. The instructor has to take a roll call of the students present in class to validate the attendance. This is time-consuming and may not be reliable. Hence, a new approach using android studio. An Integrated Development Environment (IDE) is used for developing android applications with firebase as its database. In this paper, the attendance problem is solved by developing an android attendance system which facial recognition with Global Positioning System (GPS) has integrated into it. The solution was implemented and tested on an android device. With this approach, it is impossible for any student not present in class to be marked present. The lecturer can also generate a report of the class attendance which can be exported in excel format for further processing.

Keywords

Android, Attendance, Institution, Student, University.

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