Photovoltaic system real-time health degree evaluation method and system for green asset evaluation

Abstract

The invention provides a photovoltaic system real-time health degree evaluation method and system for green asset evaluation. The method comprises the steps of setting a real-time acquisition period t; acquiring an incident sunlight irradiance value of the parallel surface of the photovoltaic module and the temperature of a backboard of the photovoltaic module in real time at an interval of time t; collecting the output power of the photovoltaic power generation system in real time; and calculating and storing the overall health degree of the photovoltaic power generation system in real time through an algorithm. The invention further provides a system for evaluating the real-time health degree of the photovoltaic power generation system. According to the method and system, the health degree value can be displayed in real time, the value is not affected by the installation capacity, the climatic environment, the installation place and the installation mode, the health degree of the photovoltaic power generation system can be directly reflected and recorded, and the efficiency and accuracy of green asset evaluation mainly composed of the photovoltaic power generation system are improved.

Description

technical field [0001] The invention belongs to the field of green asset evaluation and new energy photovoltaic testing, and specifically relates to a method and system for real-time health evaluation of a photovoltaic system oriented to green asset evaluation. Background technique [0002] As an important green asset, photovoltaic power generation systems lack a unified workflow and requirements for technical due diligence and economic evaluation during the evaluation process of mergers and acquisitions, and there are a series of technical bottlenecks, which reduce the efficiency and accuracy of green asset evaluation. Reflected in: [0003] (1) Insufficient historical calculation data, and there are deviations between transaction parameters and actual operating conditions; [0004] (2) In the early stage of the transaction, technical risks are not properly controlled, and it is easy to overestimate or underestimate the value of assets; [0005] (3) During the asset opera...

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Problems solved by technology

[0003] (1) Insufficient historical calculation data, and there are deviations between transaction parameters and actual operating conditions;

[0004] (2) In the early stage of the transaction, technical risks are not properly controlled, and it is easy to overestimate or underestimate the value of assets;

[0005] (3) During the asset operation period, there is a lack of effective real-time evaluation methods, which reduces economic benefits

[0008] (1) The power generation directly counted is affected by external factors and health, and cannot be used as a direct basis for judging whether the grid-connected system is healthy;

[0009] (2) The historical power generation is lagging, and the lag time ranges from 1 week to 1 year. Even if the power generation is found to be abnormal, economic losses have been caused; and it is impossible to provide real-time guidance for the operation and maintenance activities of the photovoltaic power generation system

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