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Photovoltaic array data cleaning method

A photovoltaic array and data cleaning technology, applied in database indexing, data processing applications, structured data retrieval, etc., can solve the problems affecting the distribution characteristics of sample data, distribution parameter distortion, limited generalization ability of intelligent methods, etc., to avoid identification The effect of offsetting results and improving accuracy

Active Publication Date: 2019-10-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

The first disadvantage is that the global probability statistics method is difficult to solve the problem of data miscleaning caused by the local accumulation of abnormal data. affected by the distribution
The disadvantages can be summarized into two points. One is that the generalization ability of the intelligent method is limited, and its generalization ability depends on the learning of a large number of fresh samples by the algorithm itself. The amount and type of sample data in the actual process cannot be guaranteed; the other is the division of the intelligent clustering algorithm. The physical significance of the results is difficult to interpret

Method used

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing:

[0040] In this example,

[0041] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] A photovoltaic array data cleaning method based on sliding standard deviation, the flow chart is as follows figure 1 As shown, the specific steps are as follows:

[0043] S1. Collect historical operating power data and historical irradiance data of photovoltaic arrays;

[0044] The collected historical operation data includes the annual historical power data of the photovoltaic array, and the historical environmental data includes the annual historical irradiance data corresponding to the photovoltaic power station. The actual operation data of the array combiner box of a large-scale grid-connected phot...

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Abstract

The invention discloses a photovoltaic array data cleaning method. According to the invention, abnormal data of the photovoltaic array under different data conditions can be identified and cleaned sothat the cleaning method can adapt to photovoltaic arrays under various different operation conditions. Compared with a traditional quartile method, the cleaning method can avoid recognition result deviation caused by distribution parameter distortion formed by abnormal data stacking, and the accuracy of the cleaning result is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation operation and maintenance, in particular to a photovoltaic array data cleaning method. Background technique [0002] Photovoltaic power generation is developing rapidly and has become one of the most promising energy sources. In 2018, the newly installed capacity of photovoltaic power generation in the country was 44.06GW, of which, photovoltaic power plants were 33.9GW, a year-on-year increase of 7%; distributed photovoltaics were 10.16GW, a year-on-year increase of 54%. As of the end of December 2018, the cumulative installed capacity of photovoltaic power generation in the country reached 174.63GW. With the rapid growth of photovoltaic installed capacity, intelligent operation and maintenance of photovoltaic power generation systems is becoming more and more important. The realization of intelligent operation and maintenance functions depends on the quality and high reliability of...

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Application Information

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IPC IPC(8): G06F16/215G06F16/22G06Q10/00G06Q50/06
CPCG06F16/215G06F16/2228G06Q10/20G06Q50/06
Inventor 朱红路胡傲宇王海政韩雨彤史淯城尹万思
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)