Ekow A. Kwofie and Emmanuel K. Anto and Godfred Mensah Determination of the Optimal DG PV Interconnection Location Using Losses and Voltage Regulation as Assessment Indicators Case Study ECG 33 kV SubTransmission Network
12 - 22
2017
11
1
International Journal of Energy and Power Engineering http://waset.org/publications/10006047
http://waset.org/publications/121
World Academy of Science, Engineering and Technology
In this paper, CYME Distribution software has been used to assess the impacts of solar Photovoltaic (PV) distributed generation (DG) plant on the Electricity Company of Ghana (ECG) 33 kV subtransmission network at different PV penetration levels. As ECG begins to encourage DG PV interconnections within its network, there has been the need to assess the impacts on the subtransmission losses and voltage contribution. In Tema, a city in Accra Ghana, ECG has a 33 kV subtransmission network made up of 20 No. 33 kV buses that was modeled. Three different locations were chosen The source bus, a bus along the subtransmission radial network and a bus at the tail end to determine the optimal location for DG PV interconnection. The optimal location was determined based on subtransmission technical losses and voltage impact. PV capacities at different penetration levels were modeled at each location and simulations performed to determine the optimal PV penetration level. Interconnection at a bus along (or in the middle of) the subtransmission network offered the highest benefits at an optimal PV penetration level of 80. At that location, the maximum voltage improvement of 0.789 on the neighboring 33 kV buses and maximum loss reduction of 6.033 over the base case scenario were recorded. Hence, the optimal location for DG PV integration within the 33 kV subtransmission utility network is at a bus along the subtransmission radial network.
International Science Index 121, 2017