Photovoltaic cell working temperature and power generation power joint estimation method

Abstract

The invention relates to a photovoltaic cell working temperature and power generation power joint estimation method, which is used for controlling the operation of a power grid system, and comprises the following steps: S1, constructing a historical database which comprises photovoltaic cell data and corresponding environmental factor data; s2, constructing a photovoltaic cell working temperatureand power generation power joint estimation model; s3, obtaining initial parameters of the joint estimation model; s4, performing model parameter optimization on the joint estimation model based on the historical database and the initial parameters; and S5, carrying out prediction estimation on the working temperature and the generated power of the photovoltaic cell by using the joint estimation model obtained in the step S4. Compared with the prior art, the method comprehensively considers the working temperature and the power generation power, can accurately predict the working temperature and the power generation power in the working process of the photovoltaic cell, has the advantages of high model precision, low model complexity and the like, and can effectively ensure the safe, stable and efficient operation of a power system.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation and distribution, in particular to a method for jointly estimating the operating temperature and power generation of photovoltaic cells. Background technique [0002] With the continuous depletion of non-renewable resources represented by coal and petroleum, and huge environmental problems have arisen, the development and utilization of renewable energy has become an important research topic. Compared with traditional forms of energy utilization, photovoltaic power generation has become an important new form of energy supply due to its advantages such as large resource reserves, simple conversion forms, no pollution emissions, no noise, and easy distributed utilization. [0003] During the actual operation of the photovoltaic power generation system, the power generation of the system will fluctuate with changes in external conditions such as light radiation intensity and ambient tempe...

AI Technical Summary

Problems solved by technology

During the operation of photovoltaic cells, there is an obvious temperature rise process, and the increase in operating temperature will affect the conversion efficiency of battery components, thereby affecting the power generation of photovoltaic cells

However, the current generation power prediction method often regards the ambient temperature as the operating temperature of the photovoltaic cell, which will undoubtedly cause a huge error in power prediction.

In addition, the long-term high-temperature operation of photovoltaic cells will pose a threat to the operational safety and reliability of the system.

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