Substation grounding network inclined shaft resistance reduction technology

Abstract

The invention provides a substation grounding network inclined shaft resistance reduction technology. The technology is achieved through the following steps that a, reconnaissance is conducted, and the number of inclined shafts, the extending direction and the laying length are determined according to the surrounding geological conditions; b, the drill bit drilling angle and the buried depth are determined; c, inclined shaft drilling is conducted, and the drilling is controlled in the shaft drilling direction and commanded through a computer according to the lateral force deviation rectifying principle so as to conduct rectification at any time; d, a drill bit is drilled back to the ground at the preset position, and a thermal galvanized circular steel pipe is fixed to the drill bit pulled out of the ground; e, the thermal galvanized circular steel pipe is pulled back to one inclined shaft through a reamer and a transfer case; meanwhile, physical type resistance reducing agents are pumped into the steel pipe through a diesel engine water pump in a high pressure mode so as to reduce the resistance of the drill bit; f, pulling is conducted while pouring is conducted, a drill rod is detached at the constant speed, and the resistance reducing agents are evenly poured into the inclined shaft. By means of the substation grounding network inclined shaft resistance reduction technology, the problem that the ground resistance can still not meet the technological requirements after a substation is laid with a composite ground network, the ground resistance is made to meet the design requirements, and safe operation requirements of a power grid are met.

Description

technical field [0001] The invention relates to a technology for reducing resistance in an inclined shaft of a substation grounding grid, which belongs to the field of electric power technology. Background technique [0002] After laying the composite grounding network in the substation, if the grounding resistance still cannot meet the technical requirements, it is necessary to add conventional resistance reduction measures. The so-called conventional measures refer to the general resistance reduction measures within the scope of substation land acquisition that can be completed by the original civil construction unit. However, since the composite grounding grid has been laid, the conventional measures are often unable to be implemented due to site conditions. At this time Some special resistance reduction measures are required, and special resistance reduction measures require a complete and strict construction procedure and method. Contents of the invention [0003...

AI Technical Summary

Problems solved by technology

[0003] According to the above requirements, the purpose of the present invention is to provide a substation grounding grid inclined shaft resistance reduction technology to solve the problem that the grounding resistance still cannot meet the technical requirements after the composite grounding grid is laid in the substation, so that the grounding resistance can meet the design requirements. Meet the needs of safe operation of the power grid