Ambient power prediction system for assembly of photovoltaic power station

Abstract

The invention discloses an ambient power prediction system for an assembly of a photovoltaic power station. The system comprises a solar cell panel, a PWM power tracking unit, a load resistance unit and a digital signal processing unit in circuit connection, the digital signal processing unit is connected with a circuit via voltage and current collection units, and is also connected with a single-chip microcomputer, the single-chip microcomputer is provided with a button setting unit, a display screen, a clock unit and a communication unit, the single-chip microcomputer is connected with an environmental parameter collection sensor, and one or two solar cell panel(s) is the same with the assembly of the photovoltaic power station. The cell assembly which is in the same batch with that of the power station is metered accurately by tracking the maximal power point, the theoretical generating capacity of the photovoltaic power station is measured and calculated by replacing surfaces withpoints and serves as data source for analysis on the generating efficiency of the whole station, and functions of real-time efficiency analysis, assembly cleaning prompt and assembly characteristic determination of different levels of equipment are realized. A model is simple and reliable, and the expansion function is strong.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a system for predicting environmental power of photovoltaic power station components. Background technique [0002] Photovoltaic power plants currently generate income from power generation. Statistics show that if a power station has a good operation and maintenance and management software platform, the power generation will increase by about 5%. Therefore, how to measure and calculate the power generation efficiency at all levels of the power station and indicate the units with large losses or low efficiency in the power station is the focus of the intelligent operation and maintenance of the power station. [0003] The theoretical power generation of photovoltaic power plants is a very important parameter for evaluating the power generation efficiency of power plants. All existing power stations use the radiation sensor radiation value to substitute int...

AI Technical Summary

Problems solved by technology

Many parameter settings in the formula are empirical figures, which are poorly based and have relatively large deviations

[0004] Due to the existing calculation methods of theoretical power generation have problems such as poor accuracy of irradiators, component temperature measurement errors, differences in attenuation rates of different batches of components, inaccurate calculation formulas or large ambiguities, etc., the calculated theoretical power generation data is not reliable. , cannot be substituted into the system to calculate and analyze the power generation efficiency of the power station

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