The importance of lightning protection of high-voltage transmission lines is increasingly prominent with the high voltage of transmission lines. Based on the analysis of the weaknesses in the lightning protection process of high-voltage transmission lines, this paper summarizes the differential lightning protection measures of transmission lines with different voltage levels and puts forward the patrol inspection items of lightning protection facilities in daily operation and maintenance. The differential lightning protection of transmission lines with different voltage levels has important theoretical guiding significance for reducing the incidence of lightning accidents of high-voltage transmission lines and ensuring the normal operation of high-voltage transmission lines.
In order to analyze the influence of various parameters on the carbon dioxide storage fracturing process, a reservoir geological model was established with a low permeability reservoir in the Ordos Basin, and numerical simulation of production and pressure history matching was performed to accurately establish the geological model, the influence of injection displacement, fracture half-length and spacing, and fracture conductivity of different fracturing processes on the fracturing effect is analyzed. Through the simulation and optimization of fracturing process parameters, the recommended injection volume is 140t and the injection speed is controlled between 35-40 tꞏd-1, which can obtain the best fracturing effect under the premise of economy.
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