Reduce Power Grid Losses in Africa: Use Modern Oil-immersed Transformers To Upgrade Old Distribution Networks

In Sub-Saharan Africa, high technical power losses have long been a major obstacle to achieving reliable and affordable power supply. Power utilities in many countries are still operating distribution networks that have been around for decades, and outdated transformers are one of the largest sources of energy waste. These old equipment have serious no-load losses and load losses, resulting in a large amount of electricity that has been converted into heat energy before it is delivered to the end user and is exhausted. In order to meet this challenge, power authorities and general contracting (EPC) parties across Africa are carrying out large-scale equipment replacement plans to upgrade outdated power distribution infrastructure through the deployment of modern low-loss oil-immersed transformers.

Industry reports show that the technical loss rate of many distribution grids in Africa can be as high as 15% or more, far exceeding the global best practice benchmark of less than 8%. Countries such as Ghana, Nigeria, Uganda and South Africa have all launched multi-year transformer replacement plans. The old-style transformers are mostly made of traditional steel cores, which will continue to consume electrical energy even under light load conditions. The new generation of oil-immersed distribution transformers adopts advanced oriented silicon steel sheet and optimized winding structure, which can significantly reduce no-load loss and load loss. For rural electrification projects and long-distance distribution lines, this energy efficiency improvement directly means the reduction of power waste, the enhancement of voltage stability, and the reduction of operating costs in the power utility sector.

In addition to energy efficiency requirements, the on-site environment in Africa also puts forward strict requirements for the reliability of equipment. The high temperature, dust, humidity and occasional floods in the tropics will accelerate the aging of the insulation system. Modern oil-immersed transformers are equipped with fully sealed fuel tanks, corrosion-resistant coatings, and robust insulation systems, which are very suitable for remote rural communities, microgrids in mining areas, and distributed solar grid-connected projects. Compared with the old models that are prone to oil spills and thermal overload, the upgraded transformers can still maintain stable performance under large load fluctuations (such as fluctuations caused by the access of rooftop photovoltaic and large-scale photovoltaic power plants).

Kechang Electric provides IEC-certified low-loss oil-immersed distribution transformers, specially tailored for African power grid upgrade projects. Our product range covers various rated specifications widely used in the African continent, and supports customized designs for impedance, voltage ratio, and anticorrosive treatment in harsh outdoor environments.Kechang Electric has provided power distribution equipment to a number of projects in Zambia, South Africa and other African countries, and provided a full set of technical documents, factory test reports, and on-site engineering consulting services for EPC (design, procurement, construction) contractors and power utilities. Every equipment produced by the company is designed to minimize the loss of the whole life cycle, while being able to withstand the harsh climatic conditions faced by distribution networks across Africa.

The modernization of the power grid is not only to reduce energy consumption, but also to stabilize the voltage when accessing renewable energy sources, while reducing the transformer failure rate and extending the service life of assets.Power utilities in Africa can maximize the return on infrastructure investment by replacing inefficient and old equipment with low-loss oil-immersed transformers. With the continuous development of the "African Single Electricity Market" (African Single Electricity Market), standardized and efficient power distribution equipment will become the key to regional power trading and achieving the goal of universal electrification.

If an EPC contractor, power utility, or independent power generator (IPP) is planning an upgrade of Africa's distribution network, please contact Kechang Electric to discuss transformer technical specifications, request product data sheets, or consult bulk procurement plans for projects aimed at reducing power grid losses.

Kechang Electric is a professional manufacturer of medium and high voltage power distribution equipment. The company provides transformers, compact substations, switchgear and grid synchronization devices that meet IEC standards for power projects in Africa, the Middle East and Central Asia, and is committed to providing durable and cost-effective solutions for energy infrastructure with harsh environments.