Photovoltaic power station effective power generation utilization hour measurement system and method

Abstract

The invention discloses a photovoltaic power station effective power generation utilization hour number measurement system and method. The system comprises a grid-connected power generation metering system which is used for calculating the actual effective power generation utilization hour number according to the power generation amount generated by a photovoltaic string, and an automatic cleaningsystem which is used for cleaning the photovoltaic string by utilizing electric energy generated by the photovoltaic string. The automatic cleaning system comprises an automatic cleaning electric cabinet used for driving a cleaning device according to a control program, a cleaning device which is used for cleaning the photovoltaic string. The grid-connected power generation metering system comprises the photovoltaic string used for converting light energy into electric energy, and a photovoltaic power distribution box which is used for acquiring the electric energy, calculating state parameters of the corresponding photovoltaic string, and calculating the actual effective power generation utilization hours of the photovoltaic string according to the state parameters. The system and the method are convenient to operate and maintain, test data are more accurate and stable, and the system and the method can be widely applied to the technical field of photovoltaic power generation.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic power generation, in particular to a system and method for measuring the effective power generation utilization hours of a photovoltaic power station. Background technique [0002] Photovoltaic power generation is a kind of clean energy, which is inexhaustible. Photovoltaic power generation mainly relies on solar panels to convert light energy into DC power, and then converts the DC power into AC power for users through inverters. The surface of solar panels It is glass, and the cleanliness of the glass surface directly affects the ability of the solar panel to absorb sunlight, thereby affecting the power generation capacity of the solar power station. One of the important operation and maintenance tasks of maintenance assessment. Regular cleaning of photovoltaic power plant components will increase the power generation by more than 3%. At present, the assessment indicators in the pho...

AI Technical Summary

Problems solved by technology

At present, the assessment indicators in the photovoltaic industry to measure the operation level of photovoltaic power plants include the system efficiency of photovoltaic power plants and the number of hours of effective power generation utilization. Among them, system efficiency is the most commonly used indicator. However, in practical applications, the radiometer sensor is unstable, has poor accuracy, and is greatly affected by environmental factors (cloudy, rainy, dusty), resulting in a large error in the final measured system efficiency, which cannot be accurately measured The actual system efficiency, so the irradiance meter in the actual photovoltaic power station is useless and cannot serve the project well

In addition, the current industry still lacks a standard reference data measurement system and corresponding method for the effective power generation utilization hours of photovoltaic power plants.

Images