J. Giogini, J.L. Munda, and A.A. Jimoh (South Africa)
Distributed generation, renewable energy, grid integration, dynamic analysis
In this paper technical evaluation is performed on a part of the Tshwane Electricity Network (South Africa) incorporating distributed renewable energy sources. The whole network is first analysed to identify the areas under threat of instability due to overloading. Distributed generation employing different renewable energy supplies is then injected at some strategic points. Simulation studies are conducted using PSCAD/EMTDC. The models used are wind turbines driving induction generators to represent wind energy, steam/gas turbines driving synchronous generators to represent the energy from waste and photovoltaic (PV) modules to represent the solar energy. Various fault conditions are considered with varying penetration levels of the distributed generators to evaluate their impact on the network in terms of frequency, voltage and current.
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