Heavy and weak current equipment grounding grid laying-out and electrical connection method

Abstract

The invention relates to laying-out method of a heavy current grounding grid, such as a power plant and a converting station of an electric system, electrical equipment of army, traffic and civil buildings and lightning protection and a weak current grounding grid, such as an electronic information system and connection method of the heavy current grounding grid and the weak current grounding grid. The heavy and weak current equipment grounding grid laying-out method comprises a heavy current grounding grid (1), the weak current grounding grid (2) and a connection wire (3) between the heavy current grounding grid and the weak current grounding grid, wherein the weak current grounding grid (2) is laid in the middle of grids of the heavy current grounding grid and electrically connected with the heavy current grounding grid (1) only through the connecting wire between the two grounding grids. The invention provides the laying-out method of a heavy current grounding grid, such as the power plant and the converting station of the electric system, the electrical equipment of army, traffic and civil buildings and the lightning protection and the weak current grounding grid and a safe and coordinated connection method between the two grounding grids. The Heavy and weak current equipment grounding grid laying-out and electrical connection method can effectively eliminate or reduce the phenomenon that heavy current equipment disturbs and damages weak current equipment when the heavy current equipment runs normally or is damaged or lightning stroke occurs.

Description

technical field [0001] The present invention relates to power system power plants, substations, and electrical equipment for military, industrial, transportation, and civil buildings, lightning protection and other strong-current grounding grids, and methods for laying weak-current grounding grids such as computers and electronic information systems, as well as strong-electricity grounding grids. and the method of connection between the weak point grounding grid. The method of the invention can effectively eliminate or reduce the interference and damage to the weak current equipment during normal operation and failure of the strong current equipment, and when lightning strikes occur. Background technique [0002] With the rapid development of electronic technology, especially the development of computer and computer communication technology, a large number of computers and other weak current equipment have entered the field of industrial process control and power control. T...

AI Technical Summary

Problems solved by technology

The common ground method has the problem of interference from strong current to weak current under normal circumstances, and the interference of lightning on weak current equipment and the problem of damage to weak current equipment; The potential of the ground grid rises when lightning strikes or a fault occurs in the strong current equipment, while the potential of the special ground grid for weak current is very low, so there is a problem of low potential introduction

And the various connecting lines entering the computer system have the problem of introducing high potential into weak current equipment and endangering the safety of people and equipment.

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