Power Generation Efficiency Assessment of Distributed Photovoltaic by Improved Fuzzy- Gray Structure
MA Chunyan, JIANG Shiying3
Journal of Electronic Systems, Vol. 10, No. 2, 2020.
DOI: https://doi.org/10.6025/jes/2020/10/2/63-71
Link: http://www.dline.info/jes/fulltext/v10n2/jesv10n2_2.pdf
Abstract:
For the current lack of generation efficiency assessment of distributed photovoltaic, we construct the evaluation
system from three aspects covering input, process and output. Fuzzy Mathematics and Gray System Theory are
introduced to carry out quantized assessment. First, the Analytic Hierarchy Process is applied to determine the weights
of various indicators, and point gradation is used to express the exact evaluation information. On this basis, the Experts
Coefficient Method is used to determine the membership of the evaluation index. We establish the Fuzzy-Gray relation
matrix, and use M(â€¢, +) operator and M(ô€€€, +) operator to calculate the mold propotion and gray propotion of relation
matrix.To solve the problem that point gradation of the evaluation result is too large, we use the weighted average type
operator M (â€¢, âŠ•) to optimize the evaluation result. Example shows that the improved Fuzzy-Gray method in the generation
efficiency evaluation of distributed photovoltaic power, is good to overcome the problems that the assessment information
is not clear and inaccurate. And this assessment system has certain significance for investment of distributed
photovoltaic power stations and improving the power generation efficiency.