Transmission tower grounding body breakpoint detection method and system

Abstract

The invention discloses a power transmission tower grounding body breakpoint detection method and system. The method comprises the steps: acquiring measurement data based on pre-arranged measurement points and measurement lines; processing the measurement data and then corresponding the measurement data to the positions of a measurement point and a measurement line so as to obtain a voltage data plane graph; and judging the topological structure of the grounding grid according to the voltage data plane graph so as to complete breakpoint detection. According to the invention, the measurement data is obtained based on the pre-arranged measurement points and measurement lines, and the processed measurement data is corresponding to the positions of the measurement points and the measurement lines to obtain the voltage data plane graph, so that measurement can be carried out without disconnecting the grounding down lead and contacting with a grounding body; meanwhile, the voltage data planegraph can greatly improve the grounding point judgment efficiency while improving the measurement precision.

Description

technical field [0001] The invention relates to the technical field of grounding grids, in particular to a method and system for detecting a breakpoint of a grounding body of a power transmission tower. Background technique [0002] The grounding body of the transmission tower is an important part of the transmission line and one of the main measures for line lightning protection. Its reliability is of great significance to ensure the safe and stable operation of the power system. However, because it is buried underground, its main component is metal, which is prone to corrosion. At the same time, due to the existence of virtual welding and missing welding during construction, it is easy to break, reduce the dispersion performance of the grounding body, threaten equipment safety and personal safety, and cause economic losses and social impacts. [0003] At present, the state detection methods of the grounding body of the transmission tower mainly include: three-pole method,...

AI Technical Summary

Problems solved by technology

[0004] The three-pole method (also known as the current-voltage pole method) refers to the method of testing the resistance of the tower grounding body with three electrodes consisting of the tower grounding body, the current electrode and the potential electrode. The resistance value is used to judge whether the grounding body is faulty, but To use the three-pole method, it is necessary to remove all the grounding down-conductors of the iron tower before measurement, and disconnect all the electrical connections between the tower body and the grounding electrode; if there is a hidden connection, accurate results cannot be measured

In addition, the calculation of the apparent resistivity of the transient electromagnetic method is too complicated, which affects the application

Images