Distributed power generation reduces the network loss and investment of transmission line when close to the load power. At the same time, distributed photovoltaic generation is intermittent and impacted by environmental factors. To compare different power network plans including distributed photovoltaic generations, a comprehensive evaluation model is developed at the perspective of grid company based on improved entropy-matter-element extension model. This study builds a set of index system referring to the reliability, safety, efficiency and environmental protection. Improved entropy model combines with objective and subjective weight factors. Meanwhile, the improved matter-element extension model can perform observations beyond range. The study also tests the model by evaluating and giving the corresponding rating for two groups of distributed power supply plans. The results of sensitivity analysis process shows that the main factors effectively influencing the distribution network plans include: “N-1” check, capacity-load ratio, system component failure rate, system component repair time.
Distributed photovoltaic generation Power network plans Evaluation Entropy-matter-element extension model
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The authors thank the anonymous referees and the editor of this journal. The authors gratefully acknowledge the financial support of the Social Science Foundation of Ministry of Education of China (Grant No. 15YJA630011).
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