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Energies 2015, 8(2), 1216-1241; doi:10.3390/en8021216

Reliability Evaluation of a Distribution Network with Microgrid Based on a Combined Power Generation System

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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Author to whom correspondence should be addressed.
Academic Editor: Josep M. Guerrero
Received: 1 November 2014 / Revised: 12 January 2015 / Accepted: 20 January 2015 / Published: 4 February 2015
(This article belongs to the Special Issue Microgrids)
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Abstract

Distributed generation (DG), battery storage (BS) and electric vehicles (EVs) in a microgrid constitute the combined power generation system (CPGS). A CPGS can be applied to achieve a reliable evaluation of a distribution network with microgrids. To model charging load and discharging capacity, respectively, the EVs in a CPGS can be divided into regular EVs and ruleless EVs, according to their driving behavior. Based on statistical data of gasoline-fueled vehicles and the probability distribution of charging start instant and charging time, a statistical model can be built to describe the charging load and discharging capacity of ruleless EVs. The charge and discharge curves of regular EVs can also be drawn on the basis of a daily dispatch table. The CPGS takes the charge and discharge curves of EVs, daily load and DG power generation into consideration to calculate its power supply time during islanding. Combined with fault duration, the power supply time during islanding will be used to analyze and determine the interruption times and interruption duration of loads in islands. Then the Sequential Monte Carlo method is applied to complete the reliability evaluation of the distribution system. The RBTS Bus 4 test system is utilized to illustrate the proposed technique. The effects on the system reliability of BS capacity and V2G technology, driving behavior, recharging mode and penetration of EVs are all investigated. View Full-Text
Keywords: reliability evaluation; microgrid; distributed generation; battery storage; vehicle-to-grid; ruleless EV; regular EV; combined power generation system reliability evaluation; microgrid; distributed generation; battery storage; vehicle-to-grid; ruleless EV; regular EV; combined power generation system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bai, H.; Miao, S.; Zhang, P.; Bai, Z. Reliability Evaluation of a Distribution Network with Microgrid Based on a Combined Power Generation System. Energies 2015, 8, 1216-1241.

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