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A multi-dimensional full-state data modeling method for probabilistic fusion photovoltaic power plants

A photovoltaic power station, data modeling technology, applied in the direction of photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of not meeting the requirements of power station operation and maintenance monitoring, not applicable to the analysis of monitoring data, etc., to reduce the system data burden, Solve the effect of model simplicity and performance improvement

Active Publication Date: 2021-11-30
HEFEI UNIV OF TECH +1
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Problems solved by technology

This modeling method is often used to analyze the interaction between the power station and the power grid, including the research on the influence of the power station on the stability of the power grid and the research on the influence of changes in power grid characteristics on the state of the power station. However, since the internal links of the power station are hidden in the model, this The similar modeling method and the obtained model do not meet the requirements of power plant operation and maintenance monitoring, nor are they suitable for the analysis of monitoring data

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  • A multi-dimensional full-state data modeling method for probabilistic fusion photovoltaic power plants
  • A multi-dimensional full-state data modeling method for probabilistic fusion photovoltaic power plants
  • A multi-dimensional full-state data modeling method for probabilistic fusion photovoltaic power plants

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Embodiment Construction

[0066] In this embodiment, a multi-dimensional full-state data modeling method for a probabilistic fusion photovoltaic power station includes the following steps:

[0067]Step 1. Suppose that a monitored photovoltaic power station contains H=2 inverters with a rated capacity of 15kW, and each inverter is connected to a photovoltaic array with J=3 photovoltaic strings. The rated power of the series is 6kW. The schematic diagram of the connection structure of the power station is as follows figure 1 . The collected data available from all sensors in the photovoltaic power station include: irradiance s, ambient temperature t, and voltage U of the jth string of photovoltaic strings in the photovoltaic array connected to the hth inverter. hj and PV string current I hj , the h-th inverter A, B, C phase current I hA ,I hB ,I hC and output active power P h , where h=1,2; j=1,2,3, the A, B, C phase voltage U on the common connection point PCC A , U B , U C , AB, BC, CA line vo...

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Abstract

The invention discloses a multi-dimensional full-state data modeling method of a probabilistic fusion photovoltaic power station, which is aimed at multi-source, heterogeneous, large-scale, and dynamic data obtained by sampling voltage, current, temperature, and irradiance sensors in the photovoltaic power station. Relevance grouping, combined calculation of current data and historical data in the group, obtains the feature quantity of each group of equipment status in the power station, and then according to the calculation result of the feature quantity, uses the probability distribution of each status of the equipment to perform data fusion on heterogeneous data sources, thereby Establish a photovoltaic power station data model with high data utilization and low data complexity, realize fusion analysis of sampled data from complex sensor networks, reduce system data burden, and improve performance of photovoltaic power station operation and maintenance monitoring system.

Description

technical field [0001] The invention relates to a photovoltaic power station data modeling technology, and belongs to the technical field of photovoltaic power station operation and maintenance monitoring. Background technique [0002] Photovoltaic power generation, as one of the important means of solar energy utilization, has achieved rapid development in recent years, and the photovoltaic power station data model, as the data basis for real-time monitoring and operation and maintenance of the power station, is of great significance to ensure the high efficiency and reliability of the power station monitoring system and the stable operation of the power generation system. . [0003] In engineering practice, the real-time monitoring of photovoltaic power plants always relies on various sensor networks. Various sensors deployed in photovoltaic power plants collect and send data. After receiving the data, the data terminal performs data processing and analysis according to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/381H02J2203/20H02J2300/22Y02E10/56
Inventor 汪海宁陈昱明张长志李浩然张健苏建徽
Owner HEFEI UNIV OF TECH
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