Deep well grounding electrode and deep well grounding electrode monitoring system

Abstract

The invention discloses a deep well grounding electrode. The deep well grounding electrode comprises a feeding rod, a feeding head, a steel sleeve with a diameter smaller than the aperture of a well body, a temperature measurement optical cable, an exhaust pipe and a drainage cable; the steel sleeve is located in the well body, and the steel sleeve is coated with an insulating erosion resistant coating from a certain depth to the top; the feeding head is located at the bottom of the steel sleeve, and the feeding head comprises a grouting device capable of pumping coke liquid; the feeding rod,the temperature measurement optical cable, the exhaust pipe and the drainage cable are located in the steel sleeve; the temperature measurement optical cable extends from a bottom end of the feeding rod to a monitoring module; the exhaust pipe extends from the bottom end of the feeding rod to the ground; and one end of the drainage cable is welded on the feeding rod, the other end of the drainagecable extends to the monitoring module, and the drainage cable is fixed on the feeding rod by bolts. By adopting a construction method of the deep well grounding electrode, the purpose of enhancing DCdeep ground layer diffusion can be realized, and the influence of the grounding electrode on the surface environment is greatly reduced. The invention also discloses a deep well grounding electrode monitoring system.

Description

technical field [0001] The invention relates to the technical field of direct current transmission, in particular to a deep well ground electrode and a deep well ground electrode monitoring system. Background technique [0002] The ground electrode is a key component in the operation of a single pole in a direct current transmission project. At present, the grounding electrode technologies used in DC transmission projects mainly include horizontal grounding electrodes and vertical grounding electrodes (shallow buried). These two grounding electrode technologies mostly choose to be constructed on the surface or in places with low resistivity in the shallow layer, and both choose to spread the flow on the surface. The current diffuses vertically and horizontally, and the horizontal diffusion has a great impact on the surface environment, such as the DC bias of the center point grounding transformer, accelerating the corrosion of shallow buried metals (pipelines, buildings (st...

AI Technical Summary

Problems solved by technology

At present, in practical engineering applications, the buried depth of ground electrodes mentioned in the method is relatively shallow, mostly within tens of meters, and it is impossible to construct deep well ground electrodes of hundreds of meters or even thousands of meters according to the above-mentioned design scheme.

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