Diesel consumption in a high penetration remote hybrid power system with a pumped hydro and battery storage

Asif, Md. Rahimul Hasan; Iqbal, M. Tariq

doi:10.1109/epec.2013.6802929

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The DE runs at a constant speed in a conventional DG to provide specific mechanical torque for an electric power generator without monitoring the electric load variation or engine efficiency [28]. The VSDG deals with the constraints mentioned above and adapts the operation, such as to improve efficiency while supply and demand are still balanced.…”

Section: Technical and Economic Aspects Of Vsdgmentioning

confidence: 99%

Variable Speed Diesel Generators: Performance and Characteristic Comparison

2022

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Diesel generators (DGs) are set to work as a backup during power outages or support the load in remote areas not connected to the national grid. These DGs are working at a constant speed to produce reliable AC power, while electrical energy demand fluctuates according to instantaneous needs. High electric loads occur only for a few hours a day in remote areas, resulting in oversizing DGs. During a low load operation, DGs face poor fuel efficiency and condensation of fuel residues on the walls of engine cylinders that increase friction and premature wear. One solution to increase combustion efficiency at low electric loads is to reduce diesel engine (DE) speed to its ideal regime according to the mechanical torque required by the electrical generator. Therefore, Variable Speed Diesel Generators (VSDGs) allow the operation of the diesel engine at an optimal speed according to the electrical load but require additional electrical equipment and control to maintain the power output to electrical standards. Variable speed technology has shown a significant reduction of up to 40% fuel consumption, resulting in low GHG emissions and operating costs compared to a conventional diesel generator. This technology also eliminates engine idle time during a low load regime to have a longer engine lifetime. The main objective of this survey paper is to present the state of the art of the VSDG technologies and compare their performance in terms of fuel savings, increased engine lifetime, and reduced greenhouse gases (GHG) emissions. Various concepts and the latest VSDG technologies have been evaluated in this paper based on their performance appraisal and degree of innovation.

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Section: Technical and Economic Aspects Of Vsdgmentioning

confidence: 99%

Variable Speed Diesel Generators: Performance and Characteristic Comparison

2022

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“…Besides, such a system construction would be rather expensive. Asif et al (2013) presented diesel fuel consumption calculations for various operating modes of WDHS with pumped hydro storage, BESS and damping load. The maximum daily fuel consumption economy (up to 20%) is achieved if DG cuts off whenever the system load goes below 30% of the DG nominal power.…”

Section: Energy Storage Systemmentioning

confidence: 99%

“…Decreasing the number of switches is possible without the speed control if the DG keeps operating in the current mode (present state) for at least 10 min after the recent switchover. Frequency drops in this state will reach 10 Hz, while the economy will only be 9.2% [116]. Stiel et al (2012) estimated the potential of using vanadium redox battery (VRB) in a large remote WDHS by HOMER Micropower Optimization Model [20].…”

Section: Energy Storage Systemmentioning

confidence: 99%

Review of Efficiency Improvement Technologies of Wind Diesel Hybrid Systems for Decreasing Fuel Consumption

et al. 2022

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The article contains current information on the development of energy-efficient technologies of wind–diesel hybrid systems (WDHS) for decreasing organic fuel consumption. As a result of the review, three research directions are identified: WDHS design optimization, the main equipment and control system improvements. A comparison of their effectiveness is presented. The methods of selecting WDHS configuration, equipment capacities and location, the optimization algorithms and objective functions used are described and WDHS project feasibility calculation results are presented. The methods to improve energy efficiency of WDHS major units’ (diesel generator (DG) and wind turbine (WT)) are considered. The methods to decrease diesel fuel consumption using special devices and energy storage system are presented. Special attention is paid to WDHS operating modes’ control methods and strategies, as well as to algorithms providing the efficient system operation. As a result, recommendations for the design of both isolated and on-grid WDHS are formulated.

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