PERFORMANCE ENHANCEMENT OF A RADIAL DISTRIBUTION SYSTEM WITH INTEGRATION OF SOLAR PHOTOVOLTAIC GENERATION SYSTEM
Keywords:
Newton Raphson, Electrical Transient Analyzer Program, Real Power, Reactive Power, Voltage Profile, IEEEAbstract
This paper assesses the performance of 11kV radial distribution system with its associated 0.415kV distributors of Ken Saro Wiwa Polytechnic Campus, Bori in Nigeria, with the aim of enhancing its performance through injection of Solar PV generation system. Load flow study simulation of the existing 11kV distribution network was carried out using Newton Raphson method embedded in Electrical Transient Analyzer Program software, so as to ascertain the network state and check if it meets up expectation. In order to enhance the distribution network, analytical technique was used to size a Solar PV generation system which was incorporated into the network and load flow study was repeated. The results obtained indicate nine (9) out of the thirteen (13) buses of the existing case network were marginally and critically overloaded. The net real and reactive power losses was 22.634kW and 16.897kVar respectively. But at the instance of injecting a sizable Solar PV generation system (425.8kW), the outcome shows that all the buses in the network are all in normal operating conditions. The net real power losses reduced from 22.634kW to 7.296KW and the reactive power losses reduced from 16.897kVar to 4.279KVar, which implies that there is 67.8% reduction in real power loss and 75% reduction in reactive power loss when solar PV generation system is penetrated, and the voltage profile of all the buses fall within ±5% variation as declared by IEEE. All these indicates that the system performance has been significantly improved,