| Summary: | Water Supply System in Giricahyo Village was built in 2007. This system
was powered from generator 30 kW and PV 12 kWp, but the system is stand
alone and disjointed. Generator is used to drive 1 pump while PV pumps 10
submersible pumps and arranged in two pumping sistems with a total of head 235
m. Both of these systems did not work since 2010.
Ministry of Public Work through Unit Department of PK-PAM
Yogyakarta wants to repair the system back. In collaboration with the Department
of Physics Engineering UGM, the research was conducted to evaluate and re
design water supply system. This study specifically focused on re-design based on
HOMER software. The result of this study is a recommendation and analysis
sistem performed using HOMER.
HOMER analyzes performance using deferrable and primary loads
methods. This analysis sees how far the prospects of PV energy can be used as
well as determines the optimal pump power that can be used by making variable
of its pump.
The result, 12 kWp PV needed converter 4 kW to meet the needs of
optimum of 31.4 %. Pump load are 1.5 kW and 3 kW load used in the primary
method analysis. As a result, capacity shortage of 1.5 kW is at 3.2 % and for 3 kW
pump is at 9.9 % which means the use of pumps up to 1.5 kW is better and can
deal with fluctuating solar radiation. The demand that can be fulfilled by 1.5 kW
pump is at 22.4 % . The use of generators is not recommended.
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