Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for correcting photovoltaic power station system efficiency based on historical big data

A technology for system efficiency and photovoltaic power plants, applied in data processing applications, system integration technology, information technology support systems, etc., can solve the problems of theoretical power generation error, small amount of data, short sampling time, etc., and achieve accurate response and accurate efficiency Evaluate and improve the effect of operation

Active Publication Date: 2018-01-12
苏州协鑫新能源运营科技有限公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the short sampling time and small data volume of real-time irradiation data, the data is unstable and highly individualized, and the theoretical power generation calculated by using real-time data often has large errors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for correcting photovoltaic power station system efficiency based on historical big data
  • Method for correcting photovoltaic power station system efficiency based on historical big data
  • Method for correcting photovoltaic power station system efficiency based on historical big data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the method for correcting the system efficiency of a photovoltaic power station based on historical big data includes:

[0049] S1 establishes the historical reference database of the photovoltaic power station, the historical reference data includes: date, current day inverter power generation, current day power supply, current day system efficiency, current day maximum irradiance, current day radiation, whether power is limited, and current environment temperature humidity;

[0050] S2 performs preprocessing on the historical reference database. The preprocessing at least includes: judging whether there is a power cut on the current day, and comparing the power generation, power supply, efficiency of the day, whether there is a power cut, and the current day The maximum irradiance, the daily radiation data and the PV module information of the power station are removed from the historical database.

[0051] S3 divides the daily radiation dose in th...

Embodiment 2

[0096] In this embodiment, the system for correcting the efficiency of the photovoltaic power station system based on historical big data includes:

[0097] The historical database is used to store the historical reference database of the photovoltaic power station. The historical reference data includes: date, current inverter power generation, current power supply, current system efficiency, current maximum irradiance, daily radiation, whether to limit Electricity and ambient temperature and humidity of the day;

[0098] The first calculation unit is used to divide the daily radiation amount in the historical reference database from minimum to maximum into multiple radiation amount intervals; calculate the average single megawatt power generation corresponding to the same radiation amount interval, the single megawatt daily power generation amount of the day, The theoretical power generation capacity of a single megawatt on the day;

[0099] The second calculation unit is u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and system for correcting photovoltaic power station system efficiency based on historical big data. The method for correcting the photovoltaic power station system efficiency based on the historical big data comprises the following steps: establishing a historical reference database of a photovoltaic power station, and calculating an average single-megawatt generating capacity, a daily single-megawatt generating capacity and a daily single-megawatt theoretical generating capacity corresponding to the same radiation quantity interval according to data in the historical database; calculating a corrected theoretical daily generating capacity corresponding to the radiation quantity interval according to the average single-megawatt generating capacity, the daily single-megawatt generating capacity and the daily single-megawatt theoretical generating capacity; calculating the corrected power station system efficiency corresponding to the radiation quantityinterval according to the corrected theoretical daily generating capacity; and repeating the above calculations to obtain the corrected power station system efficiency that separately corresponds to each radiation quantity interval. According to the method and system disclosed by the invention, the operation and maintenance of power stations can be better guided, and the accurate operation and maintenance can be achieved with lower costs.

Description

technical field [0001] The invention relates to a method for correcting the efficiency of a photovoltaic power station system based on historical big data. Background technique [0002] As of the end of 2016, my country's newly installed photovoltaic power generation capacity was 34.54 million kilowatts, and the cumulative installed capacity was 77.42 million kilowatts, ranking first in the world in both new and cumulative installed capacity. The annual power generation is 66.2 billion kwh, accounting for 1% of my country's total annual power generation. For a large number of photovoltaic power plants that have entered the operation stage, the detection and operation and maintenance of the power plant's operating status will become the focus of research (data source from the official website of the National Energy Administration). System efficiency is an important indicator for the detection and operation and maintenance of photovoltaic power plants. For photovoltaic power ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 任海波刘金龙张瑞生黄海磊
Owner 苏州协鑫新能源运营科技有限公司