GIS insulation spacer ultrahigh frequency test interference shielding method and device

Abstract

The invention discloses a GIS insulation spacer ultrahigh frequency test interference shielding method, which comprises the steps of A, manufacturing a bendable and width adjustable strip-shaped shielding device with a metal mesh; B, wrapping the strip-shaped shielding device around the peripheral surface of a GIS insulation spacer required to be shielded, and adjusting the width of the strip-shaped shielding device according to the height of the peripheral surface of the GIS insulation space so as to enable the strip-shaped shielding device to shield the GIS insulation spacer sufficiently andtightly; and C, fixing the end of the strip-shaped shielding device with the strip-shaped shielding device in a butt joint manner after the strip-shaped shielding device wraps by a circle. The invention further discloses a strip-shaped shielding device applied in the method. According to the invention, shielding for the insulation spacer is achieved by adopting the deformable metal mesh, variations in two dimensions such as the length and the width of the shielding strip can be realized through contracting and stretching, and good shielding is performed on ultrahigh frequency interference signals on the insulation spacer. In addition, the GIS insulation spacer ultrahigh frequency test interference shielding method and the device are good in use safety, convenient in performance improvement and convenient for material management and purchase cost control.

Description

technical field [0001] The present invention relates to a pre-processing method and a device used in live detection of power system substation equipment, more specifically, it relates to a GIS insulating basin UHF test interference shielding method and a device thereof. Background technique [0002] GIS equipment, that is, gas insulated switch combination electrical appliances, has been widely used in power systems in recent years due to its small footprint and good insulation performance. In the process of live operation, by detecting the 300MHz-3000MHz ultra-high frequency electromagnetic wave signal generated by the partial discharge inside the equipment, the internal defects of the GIS equipment can be grasped in time. However, due to the large number of equipment in the substation and the complex space signals, the UHF signal outside the equipment will enter the equipment through the insulating basin of the GIS equipment, which will cause obvious interference to the UHF...

AI Technical Summary

Problems solved by technology

Flying metal fragments caused by fragility and light weight of tinfoil affect the safety of substation equipment operation. On the other hand, GIS equipment has various voltage levels and many manufacturers’ models, so the size of insulating basins is also different. In the existing technology, the metal belt supplier did not fully consider the size change of the insulating basin, especially in terms of width. The metal belt provided has a single specification. When the width of the insulating basin is large, some of the width of the insulating basin may not be sufficient. effectively blocked

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