A cable wiring box for substation intelligent electronic device

Abstract

The invention provides a cable routing box for an intelligent electronic device of a substation. A plurality of metal ends grounded nearby in multiple modes are arranged on the outer wall of a box body of the routing box, a metal groove is formed in each of two side walls of the box body, a shielding reed is arranged in each metal groove, and two side walls of an upper cover plate are paint-free naked metal. Compared with the prior art, the cable routing box for an intelligent electronic device of a substation obviously weakens the direct influence of transient enclosure voltage rise in a distributed grounding mode, greatly reduces transient current excited thereon, and then reduces disturbance voltage induced on internal cables; the routing box is easy to install and maintain to special structural design of the box body, and the shielding effect of the cable routing box is improved while the influence of enclosure ground potential rise of a GIS (Gas Insulated Switchgear) on the cable of the intelligent electronic device is reduced.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a cable wiring box for an intelligent electronic device in a substation. Background technique [0002] At present, the integration of intelligent high-voltage equipment in substations and the localization of intelligent electronic devices have gradually started as a new development direction. However, the division of labor in my country's electrical manufacturing industry has been relatively small for a long time, and it is difficult for large enterprises to have advanced primary and secondary technologies at the same time. The problem of on-site joint inspection of intelligent high-voltage equipment and the reliability inspection of on-site intelligent electronic devices have attracted great attention in the industry. It is urgent to carry out research work on the overall performance evaluation of intelligent high-voltage equipment and the reliability detection technology o...

AI Technical Summary

Problems solved by technology

According to the on-site research on the cable routing box, the routing box of the secondary cable of the existing substation intelligent components is an overlapping structure, which is generally only grounded at both ends, which cannot well suppress the ground potential rise of the casing; and because the surface is coated Paint results in low shielding effectiveness

Because of the bending deformation of the lap material or the unevenness of the mating surface, gaps are left at the non-metallic contact laps. These gaps are the main factors that destroy the electrical continuity of the wiring box and cause large electromagnetic leakage.

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