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RISS 인기검색어
- 검색키워드
- 저자 : 응가죠셉키뉴이 ( Ngah Joseph Kinyuy ) (검색결과 1 건)
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응가죠셉키뉴이 ( Ngah Joseph Kinyuy ),홍성구 ( Hong Seong-gu ) 한국농공학회 2019 한국농공학회 학술대회초록집 Vol.2019 No.-
The use of renewable energy resources must increase rapidly in the near future in order to mitigate climate change. Intermittent renewable energy sources are characterized by a highly fluctuating, unpredictable and delocalized energy production, caused great problems in the balance between demand and supply. Electrical energy storage systems (EESS) could solve many problems in future electricity generation and distribution. Storing electricity by other alternative systems such as batteries, compressed air storage systems, etc. is more costly than electricity production by standby generator. The solar energy for electricity is fast growing in developing counties but it is facing some challenges, one of which being the high cost of Batteries and their short life span. The Main objective of this work is to determine the height and volume of a storage reservoir in the pump storage hydropower system with a pump as turbine The power produced by the PV panels is transmitted to the load and the extra energy during off peak hours is used to pump the water from a lower reservoir to an upper reservoir. The pump used for water pumping is a DC pump so there is no inverter in the system. The water from the upper reservoir is released through into a centrifugal pump converted in a turbine to produce energy during peak load hours. The generator is an induction motor 0.6kW of the centrifugal pump functioning as a self-excited induction generator. The generator is connected in star 3-phase connection. For experimental purposes an engine pump is used as prime mover. As the water flow through the centrifugal pump impeller it creates a rotation at the motor which generate the AC voltage and current in 3-phase. The total energy from the PV-pumped storage hydropower system is expected to be 0.4 kWh of electricity. The efficient of the system is expected to be 53 %. This mean that the system can be used instead of the battery storage system for electrical backup in PV system. The combination of renewable energy resource is an imperative option for electricity production at all time without intermittency. Future work should be done in automating the system instead of man control as it is time consuming.
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