Power system analysis and integration of the proposed Nigerian 750-kV power line to the grid reliability
| Autor: | O. Olabenjo, Tobilola Emmanuel Somefun, C. O. A. Awosope, Ademola Abdulkareem |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Super grid Computer science General Chemical Engineering Reliability (computer networking) Science General Engineering General Physics and Astronomy Topology (electrical circuits) Grid Reliability Electric power system Contingency Upgrade Electric power transmission Electricity generation Transmission line Electronic engineering General Earth and Planetary Sciences General Materials Science Power loss General Environmental Science |
| Zdroj: | SN Applied Sciences, Vol 3, Iss 12, Pp 1-15 (2021) |
| ISSN: | 2523-3971 2523-3963 |
| Popis: | The present situation of power generation in Nigeria obviously represents a challenge to our ability for rethinking the delivery of energy at maximum efficiency. Previous research on the existing Nigerian 330-kV network grid, recommended that the network be transformed from radial to ring because of high losses inherent in it and the voltage insecurity. In this study, the existing 330-kV network was reconfigured based on the identified regions mapped out for upgrade to form a ringed 750-kV super grid. The bus voltages of some of the buses in the existing 330-kV were upgraded to 750-kV and new transmission lines added to create an integrated super grid with a ring structure as compared to the radial nature of the existing 330-kV grid. These proposed buses have been selected for upgrade based on the fact that they are positioned in critical areas within the topology of the grid that transforms the existing radial structure to a ring one. The method is also cheaper than making the entire network a 750-kV system. Load-flow analysis was carried out on the existing 330-kV Nigerian Grid and the proposed Nigerian 750-kV integrated into the existing grid using Newton–Raphson algorithm. The results analysis of the new network revealed a significant reduction of 30.2% power loss. This was validated using the code-based MATLAB and Power World Simulation model-based software. Contingency analysis was also carried out on both grids using the Power World Simulator. The study revealed that the 750-kV super grid was able to mitigate the losses experienced on the existing grid significantly with better voltage profiles in all the buses. It also revealed that the new network (330-kV and 750-kV integrated) performed better to the single line contingency analysis with less violations occurring and no unsolvable cases. |
| Databáze: | OpenAIRE |
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