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Development and Field Test of a Real-Time Database in the Korean Smart Distribution Management System
Yun, Sang-Yun; Choi, Joon-Ho - In: Energies 7 (2014) 4, pp. 1852-1875
terminal unit data interconnection, and an application common model (ACM) DB for running application programs. The ACM DB for … real-time system analysis and control of the application programs was developed by using a parallel table structure and a … link list model, thereby providing fast input and output as well as high execution speed of application programs …
Persistent link: https://www.econbiz.de/10010754540
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Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System
Yun, Sang-Yun; Hwang, Pyeong-Ik; Moon, Seung-Il; Kwon, … - In: Energies 7 (2014) 2, pp. 643-669
This paper is a summary of the development and demonstration of an optimization program, voltage VAR optimization (VVO), in the Korean Smart Distribution Management System (KSDMS). KSDMS was developed to address the lack of receptivity of distributed generators (DGs), standardization and...
Persistent link: https://www.econbiz.de/10010739816
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China’s Low-Carbon Scenario Analysis of CO<sub>2</sub> Mitigation Measures towards 2050 Using a Hybrid AIM/CGE Model
Li, Wei; Li, Hao; Sun, Shuang - In: Energies 8 (2015) 5, pp. 3529-3555
China’s emissions continue to rise rapidly in line with its mounting energy consumption, which puts considerable pressure on China to meet its emission reduction commitments. This paper assesses the impacts of CO<sub>2</sub> mitigation measures in China during the period from 2010 to 2050 by using a...
Persistent link: https://www.econbiz.de/10011268485
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Operation Optimization Based on the Power Supply and Storage Capacity of an Active Distribution Network
Yu, Wenpeng; Liu, Dong; Huang, Yuhui - In: Energies 6 (2013) 12, pp. 6423-6438
Due to the interconnection and active management of Distributed Generation (DG) and Energy Storage Systems (ESSs), the traditional electrical distribution network has become an Active Distribution Network (ADN), posing challenges to the operation optimization of the network. The power supply and...
Persistent link: https://www.econbiz.de/10010721532
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Characteristics of the Operational Noise from Full Scale Wave Energy Converters in the Lysekil Project: Estimation of Potential Environmental Impacts
Haikonen, Kalle; Sundberg, Jan; Leijon, Mats - In: Energies 6 (2013) 5, pp. 2562-2582
Wave energy conversion is a clean electric power production technology. During operation there are no emissions in the form of harmful gases. However there are unsolved issues considering environmental impacts such as: electromagnetism; the artificial reef effect and underwater noise....
Persistent link: https://www.econbiz.de/10010668057
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An Improved Maximum Power Point Tracking Method for Wind Power Systems
Jeong, Hae Gwang; Seung, Ro Hak; Lee, Kyo Beum - In: Energies 5 (2012) 5, pp. 1339-1354
This paper proposes an improved maximum power point tracking (MPPT) method for wind power systems. The proposed method combines hysteresis control with tip speed ratio (TSR) control using a power coefficient curve. It has fast dynamic characteristics with the TSR control using data obtained from...
Persistent link: https://www.econbiz.de/10010668086
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Biofuel Impacts on World Food Supply: Use of Fossil Fuel, Land and Water Resources
Pimentel, David; Marklein, Alison; Toth, Megan A.; … - In: Energies 1 (2008) 2, pp. 41-78
The rapidly growing world population and rising consumption of biofuels are increasing demand for both food and biofuels. This exaggerates both food and fuel shortages. Using food crops such as corn grain to produce ethanol raises major nutritional and ethical concerns. Nearly 60% of humans in...
Persistent link: https://www.econbiz.de/10010668130
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Energy Inputs in Food Crop Production in Developing and Developed Nations
Pimentel, David - In: Energies 2 (2009) 1, pp. 1-24
Detailed energy outputs and inputs were assessed for the following crops, cultured in the U.S. and developing countries: corn, wheat, rice, soy, potato, cassava, tomato, citrus and apple. In addition, the labor input for each crop was analyzed.
Persistent link: https://www.econbiz.de/10010668139
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A Review of Ultrahigh Efficiency III-V Semiconductor Compound Solar Cells: Multijunction Tandem, Lower Dimensional, Photonic Up/Down Conversion and Plasmonic Nanometallic Structure...
Tanabe, Katsuaki - In: Energies 2 (2009) 3, pp. 504-530
Solar cells are a promising renewable, carbon-free electric energy resource to address the fossil fuel shortage and global warming. Energy conversion efficiencies around 40% have been recently achieved in laboratories using III-V semiconductor compounds as photovoltaic materials. This article...
Persistent link: https://www.econbiz.de/10010668143
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A Simple Sizing Algorithm for Stand-Alone PV/Wind/Battery Hybrid Microgrids
Li, Jing; Wei, Wei; Xiang, Ji - In: Energies 5 (2012) 12, pp. 5307-5323
In this paper, we develop a simple algorithm to determine the required number of generating units of wind-turbine generator and photovoltaic array, and the associated storage capacity for stand-alone hybrid microgrid. The algorithm is based on the observation that the state of charge of battery...
Persistent link: https://www.econbiz.de/10010668168