Thundercloud trajectory tracking prediction method based on irradiance characteristics

Abstract

The invention provides a thundercloud trajectory tracking prediction method based on irradiance characteristics. The thundercloud trajectory tracking prediction method comprises the following steps: respectively calculating an abrupt drop slope threshold, a low-level duration threshold, a low-level amplitude threshold and an abrupt rise slope threshold according to historical irradiance data afterphotovoltaic power station per unit processing influenced by thundercloud; calculating real-time irradiance data over the photovoltaic power station after per unit, sequentially calculating a real-time abrupt drop slope, a real-time low-level duration, a real-time low-level amplitude and a real-time abrupt rise slope, and comparing the real-time abrupt drop slope, the real-time low-level duration, the real-time low-level amplitude and the real-time abrupt rise slope with corresponding threshold values to judge whether thundercloud exists over the photovoltaic power station; constructing a thundercloud trajectory model according to a photovoltaic power station and a thundercloud monitoring system deployed in the thundercloud monitoring area, wherein the thundercloud trajectory model is used for tracking and predicting a thundercloud trajectory. According to the method, the thundercloud is positioned by applying the change characteristics of the thundercloud and the surrounding cloud layer on irradiance attenuation, and is not interfered by electromagnetic signals, and data comes from a photovoltaic power station, and an independent communication system does not need to be established between the photovoltaic power station and a dispatching department.

Description

technical field [0001] The invention relates to the field of thundercloud positioning and trajectory tracking prediction, in particular to a thundercloud trajectory tracking and prediction method based on irradiance characteristics. Background technique [0002] Power grid lightning accidents have become more and more obvious in recent years, showing the characteristics of short-term concentrated outbreaks, which put forward higher requirements for enhancing the lightning protection and emergency response capabilities of transmission channels. At present, there are many lightning protection measures for transmission lines, such as lightning arresters (pins, wires), reducing grounding resistance, strengthening insulation, etc., which have played an important role in improving lightning protection performance and reducing lightning tripping, and have also achieved significant results. However, these measures are still unable to completely solve the lightning protection problem...

AI Technical Summary

Problems solved by technology

However, these measures still cannot completely solve the lightning protection problem, and often appear "the tower with the installation measures does not jump, and the tower without the installation jumps again", making the line lightning protection in a relatively passive situation

For important power transmission channels, due to the large losses caused by lightning damage, conventional passive protection technologies cannot fully meet the needs of safe operation.

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