Real-time solar radiation amount detection method and system

Abstract

The present invention relates to a real-time solar radiation amount detection method and system. The method comprises: obtaining a sun declination angle, an hour angle and a region latitude of a current position; calculating a parallel distance between a latitude circle center corresponding to the region latitude and the current position and calculating a centre distance between a solar radiationpoint and the center of the latitude circle corresponding to the region latitude according to the region latitude, the sun declination angle, a preset atmosphere depth and a preset earth radius; calculating a radiation distance between the solar radiation point and the current position according to the parallel distance, the center distance and the hour angle; obtaining a direct solar radiation amount received by the current position according to the radiation distance, a preset initial solar radiation amount and a preset attenuation coefficient; and obtaining a solar radiation amount according to the direct solar radiation amount and a preset proportion, and calculating the sum of the direct solar radiation amount and a solar scattering amount to obtain a real-time solar radiation amountand output the real-time solar radiation amount. Therefore, the real-time solar radiation amount detection method and system can accurately detect a real-time solar radiation amount at any moment at any place, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a real-time solar radiation detection method and system. Background technique [0002] With the rapid development of society, the power consumption of users is increasing day by day. However, the carrying capacity of transmission wires is limited, and the construction speed of the power grid cannot keep up with the increasing load. This leads to the technology of increasing the capacity of the wires. By controlling the temperature of the power transmission wires, the power transmission wires will not be overheated and the service life will be reduced. [0003] Transmission lines include overhead lines and buried lines. General overhead lines should satisfy the heat balance equation of the following form: [0004] Q R +Q t =Q l +Q f (1) [0005] Since the Joule heat formula of a conductor is: [0006] Q R = I 2 R (2) [0007] Among them, Q R Represents the Joule ...

AI Technical Summary

Problems solved by technology

Therefore, the amount of solar radiation considered according to the traditional method is actually too conservative, and the accuracy of the evaluation value is not high, which hinders the improvement of the actual allowable carrying capacity of overhead lines

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