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Investigation of the Impact of Distributed Generation on Power System Protection

Agbetuyi, Ayoade F. and Bango, Owolabi and Abdulkareem, Ademola and Awelewa, Ayokunle and Somefun, Tobilola Emmanuel and Olubunmi, Akinola and Oluranti, Agbetuyi (2021) Investigation of the Impact of Distributed Generation on Power System Protection. Advances in Science, Technology and Engineering Systems Journal, 6 (2). pp. 324-331.

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Integration of Distributed Generation (DG) on distribution networks has a positive impact which includes the following: low power losses, improved utility system reliability and voltage improvement at buses. A real distribution network is radial in which energy flow is unidirectional from generation to transmission and from distribution to the load. However, when a DG is connected to it, the power flow becomes bidirectional, and the protection setting of the network may be affected. Therefore, the aim of this research work is to investigate the impact of distributed generation DG on power system protection. The test distribution network is first subjected to load flow analysis to determine its healthiness with and without DG connection. The load flow results confirm that the integration of the DG into the distribution network reduces the active power load loss by 92.68% and improves voltage profiles at each bus of the network by 90.72%. Thereafter, the impact of DG on the protection setting of the existing test network was investigated. Integrating DGs to the network, from our result, shows an increase in the fault currents, which in turn caused false tripping, nuisance tripping, and blinding of protection relay compared with when DGs are not connected. The protection relays were reset at the point of common coupling (PCC) to prevent any abnormal tripping. This is the major contribution of the research work

Item Type: Article
Uncontrolled Keywords: Power system Protection relay Distributed generators Distribution network
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 30 Jun 2021 11:40
Last Modified: 30 Jun 2021 11:40

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