A Method for Predicting Performance Index of Maximum Power Tracking of Photovoltaic Power Generation

Abstract

The invention provides a photovoltaic power generation maximum power tracing performance index prediction method. Through the building of a time sequence of a photovoltaic power generation maximum power tracing performance index evolution system, the method carries out the non-linear simplex method processing of time sequence measurement data, carries out the reflection calculation of a peak target function, carries out the prediction of a photovoltaic power generation maximum power tracing performance index, and obtains a prediction value of the photovoltaic power generation maximum power tracing performance index. The method can carry out the prediction of the photovoltaic power generation maximum power tracing performance index according to monitoring parameters, carries out the correction control of the maximum power tracing in real time according to calculation results, can effectively avoid power unbalance of all photovoltaic cells, and remarkably improves the reliability and economic performances of a photovoltaic system.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, in particular to a method for predicting the maximum power tracking performance index of photovoltaic power generation. Background technique [0002] The photovoltaic power generation system and its many solar cells form a complex system. How to track the maximum power of photovoltaic power generation according to the operating characteristics of solar cells and photovoltaic systems, so that each photovoltaic cell can maximize its benefits, and at the same time make each photovoltaic The most effective and fastest utilization of solar radiation resources by the system is a key issue related to the efficiency and performance of photovoltaic power generation systems. In the past, the feature of maximum power tracking was the tracking performance parameters and their correction to the maximum power tracking control. Each photovoltaic cell module system in the photovoltaic power...

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Problems solved by technology

[0002] The photovoltaic power generation system and its many solar cells form a complex system. How to track the maximum power of photovoltaic power generation according to the operating characteristics of solar cells and photovoltaic systems, so that each photovoltaic cell can maximize its benefits, and at the same time make each photovoltaic The most effective and fastest utilization of solar radiation resources by the system is a key issue related to the efficiency and performance of photovoltaic power generation systems. In the past, the feature of maximum power tracking was the tracking performance parameters and their correction to the maximum power tracking control. Each photovoltaic cell module system in the photovoltaic power generation system independently performs maximum power tracking operation. The performance of multiple modules cannot be coordinated and synchronized, and sunlight resources cannot be effectively used. The tracking accuracy and utilization efficiency of photovoltaic resources are not high. Module maximum power tracking operation performance parameters and meteorological environment parameters are monitored in real time, and the maximum power tracking performance index is predicted and calculated according to the monitoring, and the maximum power tracking is corrected and controlled in real time according to the calculation results, which can effectively avoid the power imbalance of each photovoltaic cell phenomenon, significantly improving the reliability and economy of photovoltaic systems

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