A Design Method of Spiral Grounding Electrode with the Function of Reducing Resistance

A design method and technology for grounding electrodes, applied in design optimization/simulation, geometric CAD, special data processing applications, etc., can solve the problem of inability to truly solve the influence of the distance between the topography and geomorphology, so as to shorten the distance between the electrodes and reduce the construction cost Cost, effect of reducing grounding resistance

Active Publication Date: 2021-03-16
CHONGQING UNIV
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Problems solved by technology

[0005] The above-mentioned methods are based on the existing ground electrode configuration method to improve and reduce the grounding resistance, and cannot really solve the impact of topography on the ground electrode distribution distance. When the terrain is restricted, the actual construction process is still limited by the electrode distribution distance.

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  • A Design Method of Spiral Grounding Electrode with the Function of Reducing Resistance
  • A Design Method of Spiral Grounding Electrode with the Function of Reducing Resistance
  • A Design Method of Spiral Grounding Electrode with the Function of Reducing Resistance

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Embodiment Construction

[0052] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0053] (1) Design method of spiral ground electrode structure parameters

[0054] Such as figure 1 As shown, on the premise that the laying length of the original grounding electrode remains unchanged, the grounding electrode laid in a horizontal straight line shape is changed into a spiral shape, so that the laying length of the spiral grounding electrode 3 is the same as that of the original linear grounding electrode; Line 1 is connected to the spiral ground electrode at 180°, and the connection point 2 at this connection is the tangent point between the down conductor and the spiral ground electrode.

[0055] 1) Design of the length of the spiral ground electrode

[0056] In order to obtain the design method of the spiral ground electrode with the best resistance-reducing performance of the spiral ground electrode, the calculation met...

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Abstract

The invention relates to a designing method of a spiral grounding electrode with a resistance reducing function, and belongs to the technical field of operation and management of power transmission and transformation equipment. The method comprises the following steps that S1, the laid length of the spiral grounding electrode is designed according to an finite element numerical calculation method;S2, the screw pitch of the spiral grounding electrode is designed; S3, the radius of the spiral grounding electrode is designed; S4, a spiral grounding electrode structural parameter comprehensive designing scheme is carried out; S5, theoretical calculation of the spiral grounding electrode is carried out; S6, the measuring scheme of spiral grounding electrode resistance is designed. According tothe method, smooth transition of a grounding current can be achieved by using the structural advantage of the spiral grounding electrode without additionally arranging an electric current transitionring to further reduce the grounding resistance of a grounding body.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation equipment operation and management, and relates to a design method for a spiral ground electrode with a function of reducing resistance. Background technique [0002] The current laying of the grounding body expands the contact area with the soil by increasing the length. Due to the constraints of the topography, the laying length is limited, resulting in an increase in the grounding resistance, and the thermal stability requirements cannot be met during operation. [0003] ZL 201320787931.1 provides a vertical grounding device for transmission towers, including down-conductors, horizontal grounding grids, and vertical grounding electrodes; the horizontal grounding grids include horizontal square rings laid around the foundation of the transmission tower, and the horizontal square rings are evenly arranged The electrodes of multiple horizontal ray structures; the vert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/23
CPCG06F30/23
Inventor 张占龙姚鹏志梁家祺宋睿敏旦乙画
Owner CHONGQING UNIV
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