Stabilising and extending long distribution lines with the help of renewables
Many regions in the world rely on extremely large electricity distribution networks operating at the limit of voltage stability. As a result, the power fed into the grid can suffer huge losses on the way to the consumers.
In conventional electrical distribution systems, centralised station generators supply power to dispersed customers. This often leads to a reduced electrical output, much lower than the theoretical optimum. Frequent blackouts and an unstable electrical supply are the consequences.
Stable grids in Tanzania
In a project in Tanzania, ABO Wind demonstrated that large distribution networks, operating at the limit of voltage stability and experiencing substantial distribution constraints, can be stabilised using photovoltaic plants in combination with energy storage systems.
With the help of renewables and batteries, it is possible to minimise cable-losses. Placed at a strategic point in the grid, higher voltage deviations can be avoided. This is an eco-friendly and cost-effective option, which helps to prevent critical supply situations. The combination of renewables and storage units can also help to enlarge the existing grid for additional consumers.
An interconnected photovoltaic plant combined with a battery functions as a buffer for fluctuating electricity demand and production, thus reducing losses.
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