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A distributed photovoltaic power generation device sensor network node dormant scheduling method

A sensor node and distributed photovoltaic technology, applied in photovoltaic power generation, photovoltaic power stations, photovoltaic modules, etc., to achieve the effects of ensuring reliability, prolonging service life, and reducing energy consumption

Active Publication Date: 2017-06-20
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the sensor nodes are powered by batteries with limited energy, for the distributed photovoltaic power generation system monitoring network based on WSN technology, the energy consumption problem becomes the main "bottleneck" that restricts the operating life of the monitoring network

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  • A distributed photovoltaic power generation device sensor network node dormant scheduling method
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  • A distributed photovoltaic power generation device sensor network node dormant scheduling method

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0044] In order to make a reasonable prediction of the output power of the distributed photovoltaic power generation system, it is necessary to first understand the mathematical model of the photovoltaic power generation system. The mathematical expression of the photovoltaic array output power is:

[0045] P s =ηSI[1-0.005(t 0 +25)] (1)

[0046] In the formula: η represents the conversion efficiency of the photovoltaic array; S represents the area of ​​the photovolta...

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Abstract

The invention discloses a dormancy scheduling method for a sensor network node of a distribution type photovoltaic power generation device. According to the dormancy scheduling method, the sensor node collects illumination intensity information and environment temperature information at different time frames and different sampling periods according to the daily change rule of the illumination intensity and the environment temperature. The dormancy / awakening scheduling mechanism for the sensor node in a distribution type photovoltaic power generation system monitoring network is suitable for different weather conditions, and the reliability of information collecting is guaranteed. To reduce energy consumption of the monitoring network and prolong the service life of the network, a minimum sensor node depth dormancy / awakening scheduling mechanism with the illumination intensity and environment temperature comprehensively taken into consideration is provided, and the basic idea of flexibly adjusting the dormancy / awakening time of the node by dynamically adjusting the sampling periods of the sensor node in the different time frames in one day according to different depths of the node in the monitoring network to reduce the energy consumption of the sensor node and prolong the service life of the monitoring network is provided.

Description

technical field [0001] The invention relates to a dormancy scheduling method for a sensor network node of a distributed photovoltaic power generation device, which belongs to the field of photovoltaic power generation. Background technique [0002] At present, photovoltaic power generation has become the mainstream trend of solar power generation. Distributed photovoltaic grid-connected power generation has the characteristics of instant use, strong applicability, and no need for energy storage, which can effectively supplement the power grid. However, the photovoltaic power generation system is easily affected by external factors, and its output has great randomness and volatility. an impact that cannot be ignored. By establishing a reliable monitoring system, it can provide guidance for the coordinated dispatch of distributed photovoltaic power generation systems and power grids, so as to better meet the needs of large-scale distributed photovoltaic power generation grid-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H02S10/00
CPCY02D30/70Y02E10/50
Inventor 李乔木傅质馨袁越刘冠群
Owner HOHAI UNIV