Nigeria Grid & Transmission

Focus: Technical Perspective | Kuje/Wumba/Lokogoma 132/33kV Substations, FCT | 5x60MVA =300MVA | 11x 132kV AIS Bays | 5km XLPE Underground | Certified 24 June 2022 From 60MVA transformers to 5 km of underground high-voltage cable, the Kuje / Wumba / Lokogoma project was a complete engineering, procurement and construction undertaking. Here is what it involved. A transmission substation is where the grid changes gear. Power arriving at high voltage is stepped down, switched, protected and sent out to distribution networks. Designing and building one from scratch involves civil engineering, heavy electrical equipment, sophisticated protection systems and digital control, all integrated into a single functioning system. The Kuje / Wumba / Lokogoma Substations Project, awarded by Transmission Company of Nigeria to International Consolidated Contractors in May 2020, delivered two such substations and an underground cable connection. TCN's certificate confirms full scope was comple...

Focus: Technical Perspective | 30MWp into 2x60MVA Transmission Substation | Grid Engineering | Kabba, Kogi State Integrating 30MWp of photovoltaic generation into a 2x60MVA transmission substation is a demanding exercise in grid engineering. Here is why it matters and what it involves. Most solar projects in rural Nigeria have been mini-grids: self-contained systems serving a defined community. The 30MWp Solarization of the 2x60MVA Transmission Substation at Kabba, Kogi State , awarded by REA to ICC Offshore SAL in March 2020, belongs to a different category. It connects utility-scale solar to high-voltage grid infrastructure. 120MVA substation — 2x60MVA transformers. (1k/low) Understanding the Substation: 120MVA Capacity A transmission substation is a node where power arriving over high-voltage lines is transformed down to lower voltages for distribution. Kabba's two 60MVA transformers give combined capacity of 120MVA . A 30MWp solar plant therefore represents substantial ...