Abstract
To prevent construction machinery from intruding into the transmission corridor, a distance early warning method based on the relationship between the approach angle and the electric field strength is proposed. First, use the simulation analysis to determine the installation position of the electric field sensor. Then, the relationship between the approach angle and the electric field strength at the minimum safe distance outside the transmission line for different voltage levels, number of loops, and loop arrangement are analyzed, and the approach angle and electric field strength are used as comprehensive criteria. Finally, the relationship between the comprehensive criteria of various types of transmission lines is analyzed. Through the method proposed in this paper, an effective control method can be provided for maintaining the minimum safe distance when the construction machinery works near the transmission line.
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