Electrochromic insulating basin for flashover positioning

Abstract

An electrochromic insulating basin for flashover positioning comprises a flange plate, a concave surface, a conductor connecting piece and a flange hole, the concave surface is arranged in the center of one side of the flange plate, the conductor connecting piece is arranged in the center of the concave surface, the concave surface is coated with an epoxy insulating coating, and the plane of the flange plate and the plane connecting area are coated with electrochromic coatings. And when the current reaches a set value, the electrochromic coating changes color, so that the flashover position can be quickly positioned, and the problem that the GIS / GIL equipment cannot be quickly visually positioned after flashover occurs in the operation or high-voltage test process is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulation detection of high-voltage power equipment and relates to an electrochromic insulation basin for flashover positioning. Background Art

[0002] GIS / GIL are crucial power transmission equipment in hydropower stations, transmitting electricity from the GIS switch station within the mountain through dedicated shafts to the outgoing transmission yard, which is hundreds of meters high. Their reliable operation is crucial to the stability of the hydropower station's power supply. However, long-term operational experience has shown that GIL insulation failures frequently occur, seriously threatening the safe operation of the hydropower station.

[0003] Defects such as free metal particles, protrusions or burrs on contact electrodes, surface contamination on insulators, and air gaps in solid insulation, introduced during GIS / GIL production and installation, are the primary causes of reduced GIS / GIL insulation performance. During operation, these defects can distort the local electric field within the GIS / GIL, triggering partial discharge (PD). This PD can develop and eventually lead to GIS / GIL insulation failures and flashovers. When a flashover occurs, it is necessary to quickly locate and replace the affected insulation basin. However, visual inspection alone cannot identify the flashover basin, making it difficult to determine which section of the equipment should be disassembled and replaced. Currently, flashovers that occur during high-voltage testing can be located and identified by pre-installed flashover locators, but accurate location often requires multiple deployments. If a flashover occurs during operation, high voltage is applied to specific areas and flashover locators are deployed for further analysis. Sometimes, the risky method of increasing the generator voltage from zero to locate the flashover point is employed. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an electrochromic insulating basin for flashover positioning, wherein a concave surface is arranged in the center of one side of a flange, a conductor connector is arranged in the center of the concave surface, an epoxy insulating coating is coated on the concave surface, and an electrochromic coating is coated on the plane of the flange and the plane connection area. When the current reaches a set value, the electrochromic coating changes color, which is conducive to quickly locating the flashover position, and solves the problem that GIS / GIL equipment cannot be quickly visually positioned after a flashover occurs during operation or high-voltage testing.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an electrochromic insulating basin for flashover positioning, which includes a flange, a concave surface, a conductor connector and a flange hole; the concave surface is located in the center of the flange, the conductor connector is arranged in the center of the concave surface, the flange holes are evenly distributed on the plane of the flange, and a sealing groove is provided between the concave surface and the plane; an electrochromic coating is coated on the plane and the plane connection area.

[0006] The concave area is coated with epoxy insulation coating.

[0007] The conductor connecting piece is made of silver-plated metal.

[0008] The electrochromic coating is irreversible color change.

[0009] The electrochromic coating changes color when the current reaches a set value.

[0010] The main beneficial effects of the utility model are:

[0011] The concave surface is coated with epoxy insulation coating, and the conductor connector is made of metal silver-plated material to ensure good conductivity and insulation.

[0012] The flat surface and the flat connection area are coated with an electrochromic coating. When the current reaches the set value, the electrochromic coating changes color, which is conducive to quickly locating the flashover position, solving the problem of being unable to quickly visually locate the flashover of GIS / GIL equipment during operation or high-voltage testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the main view.

[0016] In the figure: flange 1; concave surface 2; conductor connecting piece 3; flange hole 4; flat surface 5; sealing groove 6. DETAILED DESCRIPTION

[0017] like Figure 1~Figure 2 In the invention, an electrochromic insulating basin for flashover positioning is disclosed, comprising a flange 1, a concave surface 2, a conductor connector 3, and a flange hole 4; the concave surface 2 is located at the center of the flange 1, the conductor connector 3 is provided at the center of the concave surface 2, the flange holes 4 are evenly distributed on the plane 5 of the flange 1, a sealing groove 6 is provided between the concave surface 2 and the plane 5; an electrochromic coating is applied to the plane 5 and the area connecting the plane 5. By providing the concave surface 2 at the center of one side of the flange 1, providing the conductor connector 3 at the center of the concave surface 2, applying an epoxy insulating coating on the concave surface 2, and applying the electrochromic coating to the plane 5 of the flange 1 and the area connecting the plane 5, the electrochromic coating changes color when the current reaches a set value, which facilitates rapid positioning of the flashover position and solves the problem of being unable to quickly visually locate GIS / GIL equipment after a flashover occurs during operation or high-voltage testing.

[0018] In a preferred embodiment, the concave surface 2 is coated with an epoxy insulating coating. When in use, the concave surface 2 is coated with the epoxy insulating coating, which has good insulation properties.

[0019] In a preferred embodiment, the conductor connector 3 is made of silver-plated metal. When in use, the conductor connector 3 is made of silver-plated metal and has good electrical conductivity.

[0020] In a preferred embodiment, the electrochromic coating is irreversibly color-changing. When a flashover occurs, the flashover area or flashover point will emit a color change, which is easy to visually observe and accurately locate.

[0021] In a preferred embodiment, the electrochromic coating changes color when the current reaches a set value. When in use, the occurrence of flashover mainly depends on the current, and the electrochromic coating changes color only when the current reaches the set value.

[0022] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The embodiments and features therein may be arbitrarily combined unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An electrochromic insulating basin for flashover positioning, characterized by: It comprises a flange (1), a concave surface (2), a conductor connector (3) and a flange hole (4); the concave surface (2) is located at the center of the flange (1); the conductor connector (3) is arranged at the center of the concave surface (2); the flange holes (4) are evenly distributed on the plane (5) of the flange (1); a sealing groove (6) is arranged between the concave surface (2) and the plane (5); an electrochromic coating is applied to the plane (5) and the connecting area of the plane (5); The electrochromic coating is irreversible color change; The electrochromic coating changes color when the current reaches a set value.

2. The electrochromic insulating basin for flashover positioning according to claim 1, characterized in that: The area of the concave surface (2) is coated with an epoxy insulating coating.

3. The electrochromic insulating basin for flashover positioning according to claim 1, characterized in that: The conductor connector (3) is made of silver-plated metal.

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