Deep Well Grounding Electrode Layout for Reduced Surface Stray Currents
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing deep well grounding electrodes in direct current electricity transmission projects are limited to shallow depths, which restricts the efficient diffusion of direct current in deep, conductive strata and results in significant environmental impact due to surface stray currents.
Innovation Solution
A deep well grounding electrode system comprising a well body with a steel casing, a feeding rod, a temperature measuring optical cable, an exhaust pipe, and drainage cables, where the system is divided into an upper insulation section and a lower diffusing section filled with coke, reducing surface current diffusion and establishing an electron circulation path deep in the earth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If shallow buried vertical grounding electrode is used, then construction is simple and cost is low, but current diffuses on earth surface causing environmental harm and land occupation
Solution Approach 1:
The patent transitions from shallow horizontal current diffusion to deep vertical current transmission by implementing a grounding electrode system that extends several hundred meters to thousands of meters into the earth, utilizing the third dimension (depth) to resolve the contradiction between construction simplicity and environmental harm reduction
2Object-affected harmful factors
If deep well grounding electrode with depth of several hundred meters or thousands of meters is constructed, then surface current diffusion is reduced, but construction difficulty and cost increase significantly
Solution Approach 1:
The patent segments the deep well grounding electrode into modular components including well body sections, electrode sections, and filling materials that can be constructed and installed in discrete stages, making the complex deep construction task manageable and reducible to simpler repetitive operations
Solution Approach 2:
The patent employs a nested structure where the grounding electrode is placed within a well body, which is itself within the earth formation, creating concentric layers of protection and function that simplify the overall construction approach while achieving deep current transmission
3Reliability
If insulation and anti-corrosion layer is applied to steel casing, then electrode durability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses composite material structures combining steel casing with insulation layers and anti-corrosion coatings, creating a multi-layered protective system that enhances durability while using standard industrial materials and processes to avoid excessive manufacturing complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces the environmental impact by minimizing surface stray currents and allows for efficient direct current transmission through deep, conductive layers, forming a current circulation loop with reduced surface diffusion and potential differences.
Implementation Method 1
a temperature measuring optical cable extending from a bottom end of the feeding rod to a monitoring module
Implementation Method 2
one end of the drainage cable is welded to the feeding rod by an exothermic welding point
Data Source
AI summary
A deep well grounding electrode and a deep well grounding electrode monitoring system. The deep well grounding electrode comprises a feeding rod, a feeding head, a steel casing, a temperature measurement optical cable, an exhaust pipe, and a drainage cable; the steel casing is located in the well body; the feeding head is located at the bottom of the steel casing; the feeding rod, the temperature measurement optical cable, the exhaust pipe, and the drainage cable are located in the steel casing; 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 extends to the monitoring module, and the drainage cable is fixed to the feeding rod by bolts.