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Investigating the Effects of the Driving Cycle and Penetration of Electric Vehicles on Technical and Environmental Characteristics of the Hybrid Energy System Considering Uncertainties

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Energy Engineering 2022年第5期119卷 1985-2003页

作者： Jiusong Chen Dejun Miao Yizong Dai Mojtaba Ghadamyari Yangzhou Polytechnic College YangzhouChina Department of Electrical Engineering Faculty Shahid Beheshti UniversityTehranIran

Electric vehicles(EVs)have received special consideration from modern society over the past several years.Although EVs are a fine example of environmentally friendly technology and have many advantages,they relatively increase the electricity demand upon a power grid as well.Therefore,their negative impact on busvoltage and line losses should be analyzed.In this study,the effect of EV loads and their penetration on bus voltage and line losses of an IEEE-33 bussystem has been examined via two scenarios.It is important to mention that the effect of EVs on the rate of air pollution,produced by fossil fuel electricity generators,has been investigated throughout the study.Also,the key role of demand response programs in the reduction of EVs’negative effects on the grid has also been discussed in the last scenario.Generally,the simulation of this paper provides a novel and wider perspective on EVs and their effect on grids and environmental pollution.

关键词： Electric vehicle buses’voltage line losses environmental pollution renewable resources demand response

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Optimal Su-Do-Ku based interconnection scheme for increased power output from PV array under partial shading conditions

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Frontiers in Energy 2015年第2期9卷 199-210页

作者： P. SRINIVASA RAO P. DINESH G. SARAVANA ILANGO C. NAGAMANI Department of Electrical and Electronics Engineering National Instituteof Technology Tiruchirappalli 620015 India

Partial shading is a common phenomenon in PV arrays. They drastically reduce the power output because of mismatch losses, which are reliant on the shape of the shade as well as the locations of shaded panels in the array. The power output can be improved by distributing the shade over various rows to maximize the current entering the node. A Su-Do-Ku configuration can be used to rearrange the physical locations of the PV modules in a total cross tied PV array with the electrical connections left unchanged. However, this arrangement increases the length of the wire required to interconnect the panels thus increasing the line losses. In this paper, an improved Su-Do-Ku arrangement that reduces the length of the wire required for the connection is proposed. The system is designed and simulated in a Matlab/Simulink environment for various shading patterns and the efficacies of various arrangements are compared. The results prove that the power output is higher in the proposed improved Su-Do- Ku reconfiguration technique compared to the earlier proposed Su-Do-Ku technique.

关键词： array configuration mismatch losses partialshading line losses Su-Do-Ku arrangement

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