LAUSR

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.