Optimization of Existing Power Plants in Nigeria Using Omoku Gas Plant as Case Study

• Author(s): Dimkpa, Precioustone ; D. C. Idoniboyeobu ; S. L. Braide
• Paper ID: 1702823
• Page: 14-25
• Published Date: 13-10-2021
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 5 Issue 4 October-2021

Abstract

Optimization of power generation of an existing power plant is a research conducted using Omoku gas turbine as a case study. The research is essential for the planning, operation, future expansion and improvement of power generation from Omoku gas turbine. The analysis was conducted to tackle and solve problem of the Omoku gas turbine that was generating power far below its total installed capacity of 150MW by improving the quality of generated power, thus optimizing the 60MW it is currently generating. The study was carried out with bus data, branch data, synchronous generator data and lump load data gotten from the staff within Omoku power station due to restricted access and Covid-19 lockdown in the country. Electrical Transient Analyszer Program (ETAP) 12.6.0 was used to model and simulate the network using Fast Decoupled Load Flow Method (FDLFM). Optimal Capacity Placement (OCP) method was the improvement technique used to enhance efficiency of generated power. Simulation results show that before optimization of the network, the total active and reactive power losses realized from the network are 1428.4KW and 12161.0KVAR, respectively with average voltage drop of 3.35% along the branches of the network. Also, the auxiliary station service transformer, T7 was seen to be operated critically overloaded due to ETAP software employing the standard derating value of 37.2% on the transformer, causing it to operate below its maximum capability, thus prolonging its life span. But after Optimal Capacitor Placement (OCP), the total active and respective power losses incurred along the branches of the network were 839.4KW and 7018.0KVAR respectively. The average percentage voltage drop along the branches was also improved to 1.58%. It can also be seen from the cost analysis that a positive profit is compiled as the loss decreased saving is bigger than the operating cost for each year. A steady increase in profit over the first year of planning is observed, which thereafter remained constant down through the remaining years of planning, birthing and accumulative profit.

Citations

IRE Journals:
Dimkpa, Precioustone , D. C. Idoniboyeobu , S. L. Braide "Optimization of Existing Power Plants in Nigeria Using Omoku Gas Plant as Case Study" Iconic Research And Engineering Journals Volume 5 Issue 4 2021 Page 14-25

IEEE:
Dimkpa, Precioustone , D. C. Idoniboyeobu , S. L. Braide "Optimization of Existing Power Plants in Nigeria Using Omoku Gas Plant as Case Study" Iconic Research And Engineering Journals, 5(4)