Embedded Generation in Nigeria: Port Harcourt 132/33kV Case Study

Abstract

This paper considers the evaluation of the integration of Trans Amadi Gas Turbine Plant, which is an embedded generation (EG) Plant in the Rivers State of Nigeria Power sub-network, within the Nigeria Electricity Supply Industry (NESI). The degree of EG penetration on the network is also considered alongside its impact on the load factor. This study uses the Power Systems Software for Engineering (PSS/E) for network modelling and simulation studies. With the EG in operation and out of operation, the Newton Raphson’s load flow method is used to investigate the network power losses, voltage profiles and load angles, while conventional methods are used for the determination of the degree of penetration of the EG as well as its impact on load factor. The results of this study show the 14.47% penetration level of the considered EG plant, generally improves the network voltage profile and reduces the active power losses from 14.47MW to 7.77MW while improving on the consumers’ utilization efficiency. The gains of this study can be consolidated to help utilities satisfy their license obligations for quality of supply, consumers’ satisfaction and to improve their revenue earnings.