由于传统GO-FLOW法存在定常故障率和维修率的局限性,将一种新的可靠性评估算法—模糊GO-FLOW法引入并网型微电网可靠性评估中。首先,基于梯形模糊数,对GO-FLOW法进行改进;随后,根据并网型微电网系统结构,设计新型操作符并建立微电网系统的模糊GO-FLOW图,同时对操作符的模糊成功概率进行计算;最后,基于改进的IEEE RBTS BUS6 F4馈线系统,对比分析模糊GO-FLOW法、模糊化前GO-FLOW法和序贯蒙特卡洛模拟法。结果表明,在并网型微电网可靠性评估中,模糊GO-FLOW法具有较高的运算效率和计算精度。
Abstract
A new reliability assessment algorithm, the fuzzy GO-FLOW methodology, is introduced into the reliability assessment of grid-connected microgrids due to the limitations of the conventional GO-FLOW methodology in terms of constant failure rate and maintenance rate. Firstly, based on the trapezoidal fuzzy number, the GO-FLOW methodology is improved. Subsequently, according to the structure of the grid-connected microgrid system, the novel operator is designed and the fuzzy GO-FLOW diagram of the system is established, and the fuzzy success probability of the operator is also calculated. Finally, the fuzzy GO-FLOW method, the pre-fuzzification GO-FLOW method and the sequential Monte Carlo simulation method are compared and analyzed based on the improved IEEE RBTS BUS6 F4 feeder system. The results show that the fuzzy GO-FLOW methodology has high operational efficiency and computational accuracy in the reliability assessment of grid-connected microgrids.
关键词
可靠性分析 /
微电网 /
光伏发电 /
GO-FLOW法 /
梯形模糊数
Key words
reliability analysis /
microgrids /
photovoltaic power /
GO-FLOW methodology /
trapezoidal fuzzy number
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