Photovoltaic power station power generation duration calculation method and system

Abstract

The invention discloses a photovoltaic power station power generation duration calculation method and system. The method comprises the steps: obtaining power generation duration data of an original power station around a to-be-evaluated power station; determining a first correction coefficient according to the operation data and the environment data of the to-be-evaluated power station and the original power station; determining a second correction coefficient according to the operation data and the environment data of the prediction period and the typical period of the to-be-evaluated power station; and calculating the power generation duration of the to-be-evaluated power station in the typical period based on the first correction coefficient, the second correction coefficient and the power generation duration data of the original power station. According to the technical scheme, the actual power generation duration data of the built power stations around the to-be-evaluated power station is introduced to calculate the typical power generation duration data of the to-be-evaluated power station, and the accuracy of photovoltaic power station power generation duration calculation is effectively improved, so the investment loss is reduced for investment and financing institutions and photovoltaic power station construction enterprises.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of photovoltaic power generation, and in particular to a method and system for calculating the duration of power generation of a photovoltaic power station. Background technique [0002] The evaluation of the power generation time of photovoltaic power plants is related to the investment and financing transaction prices and sales prices of photovoltaic power plants. If the evaluation is not done properly, it will cause losses to the enterprise. At present, there are two main methods for evaluating the power generation duration of photovoltaic power plants: (1) use simulation software to determine the typical annual radiation equivalent duration data and typical annual system efficiency data of the power station to be evaluated based on the typical annual meteorological data of the power station to be evaluated, Based on the typical annual radiation equivalent duration data and typic...

AI Technical Summary

Problems solved by technology

[0003] However, in method (1), the typical annual radiation equivalent duration data and typical annual system efficiency data of the power station to be evaluated obtained by the simulation software are quite different from the real data, which leads to the calculation of the annual equivalent duration of power generation of the power station to be evaluated. Inaccurate; in method (2), the actual power generation time data of the surrounding power stations is used to replace the power generation time data of the power station to be evaluated, and the actual difference between the surrounding power stations and the power station to be evaluated is not considered, resulting in the evaluation of the power generation time of the power station to be evaluated. large error

Images