A transmission line tower lightning strike early warning method based on neighborhood preservation embedding algorithm

Abstract

The invention relates to a transmission line tower lightning strike warning method based on a neighborhood maintenance embedding algorithm, and belongs to the field of transmission line safety monitoring. According to the micro-topography and micro-meteorological information of the transmission line pole tower, such as the elevation of the pole tower, the calling height, the meteorology, the topography and geomorphology of the pole tower, the circumference situation of the pole tower 50m, the soil condition and the like, the implicit local model information is extracted by using the neighborhood preservation embedding algorithm (NPE). Before modeling, the data should be collected and sorted. For the existing historical micrometeorology, microtopography and tower ontology of transmission line corridor, the description of literal data in the information literature should be transformed into numerical data and stored in the database for historical data modeling by setting specifications.In the real-time monitoring, the newly acquired micro-meteorological data are stored in the database and micro-terrain after being processed by the above specifications, and the tower body data are used by the on-line monitoring module for processing.

Description

technical field [0001] The invention belongs to the field of transmission line safety monitoring, and relates to a lightning strike early warning method for transmission line poles and towers based on a neighborhood-preserving embedded algorithm. It is of great significance to provide some method references for the research on the prevention and control of lightning damage of transmission lines, and to reduce the loss of lightning damage of transmission lines, which is of great significance to ensure the safe and stable operation of transmission lines. Background technique [0002] Due to China's special geographical location, the span is extremely wide from east to west, from north to south, especially in the Yunnan-Guizhou Plateau area, which contains various topography and landforms. The corridors of overhead transmission lines of the power grid are widely distributed. Wait for bad weather. Among them, lightning has become one of the most important factors affecting the ...

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Problems solved by technology

[0005] 1) Insufficient correlation analysis of panoramic information: lightning strike is a strong discharge phenomenon in nature, and there are many factors that lead to lightning strike

This method can realize the lightning warning of transmission lines to a certain extent, but it only uses a single variable for analysis, and does not consider that the occurrence of lightning is the result of the interaction of panoramic information such as meteorological conditions, environmental parameters, and tower properties.

[0006] 2) The accuracy of lightning strike warning is not enough: the lightning strike warning of transmission lines is based on meteorological conditions and lightning parameters, and the weather forecast belongs to ten kilometers level weather forecast, resulting in a large scale of warning

The granularity is not up to the tower level, and it is impossible to capture the specific location of lightning, which makes it impossible for the power system to establish a customized service system for power grid transmission lines

[0007] 3) The mechanism model is not easy to build: the process of transmission lines being struck by lightning is a complex high-dimensional nonlinear process, and its randomness, mutation and dynamics make it difficult to establish a mechanism model

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