微电网
按来源划分的电力成本
可再生能源
光伏系统
储能
汽车工程
可靠性(半导体)
可靠性工程
环境科学
发电
电池(电)
计算机科学
工艺工程
工程类
功率(物理)
电气工程
物理
热力学
作者
Subhash Chandra Yadav,Poninder Kumar,Ashwani Kumar Sharma
标识
DOI:10.1016/j.est.2023.109440
摘要
This paper proposes a 100 % renewable fraction based isolated microgrid with wind turbine, solar photovoltaic, battery, and pumped hydro storage to minimize the levelized cost of energy (LCOE) considering a) Loss of power supply probability (LOPSP) to enhance reliability and b) Percentage of excess generation (PEG) to limit excess energy (Pex) generation. The reliability assessment is performed considering the outage rate of generating units. Isolated Microgrids with a 100 % renewable fraction generate Pex, a short-duration and infrequent event, adding to system uncertainty. The presence of Pex causes operational and reliability issues, increasing the system cost. Diesel generators are a popular choice to overcome the Pex; however, they cause greenhouse gas (GHG) emissions. The proposed microgrid is simulated on MATLAB for a year using Grey wolf optimization (GWO), Moth flame optimization (MFO), and the Dragonfly algorithm (DA). The GWO algorithm outperforms the other algorithms in terms of accuracy and execution time. The results show that the proposed microgrid restricts the Pex to 4.91 % (Case-I) and 4.95 % (Case-II) of total generation. The LCOE is 0.3588 $/kWh and 0.2491 $/kWh for Case-I and Case-II, respectively, using GWO. With the hybridization of energy storage, GHG emissions are reduced by 82.37 % and 93.15 % for Case-I and Case-II, respectively, compared to grid-supplied. The sensitivity analysis shows that CO2 emissions vary linearly with generation. However, LCOE variation is non-linear due to its significant correlation with energy storage. Thus, the isolated microgrids operate at 100 % renewable fraction with minimum LCOE, Pex, and low GHG emissions.
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