LLS-based regional lightning damage feature correlation analysis method

Abstract

An LLS-based regional lightning damage feature correlation analysis method is characterized in that the correlation between the spatial features of cloud-to-ground lightning and the meteorological background extracted from NECP reanalysis data is determined through singular value decomposition based on cloud-to-ground lightning monitoring data of a lightning location system and the NECP reanalysis data, and therefore, factors strongly correlated with the features of regional lightning damage can be analyzed and identified. The method of the invention has the characteristics of easy field application, high-reliability algorithm, and high reference value in auxiliary decision making. The method of the invention can be applied to a provincial power company power dispatching institution which has rich experience in running a lightning location system, provides accurate cloud-to-ground lightning analysis and is equipped with a grid meteorological information system in a power grid. A method for screening meteorological conditions affecting the features of regional lightning damage is provided, and the construction of the capability of the power grid to resist lightning damage is promoted.

Description

technical field [0001] The invention relates to an LLS-based correlation analysis method for regional lightning damage characteristics, and belongs to the technical field of operation, maintenance and repair of high-voltage electrical equipment. Background technique [0002] According to statistics such as the "National Compilation of Typical Examples of Lightning Disasters" and other materials in recent years, all industries that are vulnerable to lightning strikes can be roughly divided into six categories: electric power, radio and television, chemical industry, computer, communication, and others. Higher, accounting for about 24.7% of the total. As far as the power industry is concerned, lightning tripping has always been the first of all kinds of failure accidents. According to incomplete statistics, in 2003, nearly 40.23% of the total trips of 66-500kV transmission lines in China were caused by lightning strikes; in 2004, 220-500kV lightning trips owned by State Grid ...

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Problems solved by technology

Although the design standard of high-voltage electrical equipment in the primary system is high, and the ability to resist lightning damage is better than that of low-voltage electrical equipment, only by improving the design standard of primary equipment to strengthen the defense ability of lightning disasters will inevitably lead to a huge asset investment burden. It is difficult to achieve it in a short period of time. Therefore, it is particularly important to strengthen the analysis and research on the characteristics of lightning damage and improve the ability of secondary system lightning damage monitoring and early warning analysis.

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