CN201138367Y - Insulator Flashover Indicator - Google Patents

Abstract

The utility model discloses a fault indication device during operation of a high-voltage power transmission line, in particular to a position indication device for insulators damaged due to flashover. The utility model comprises: two matched Wood alloy disks, the upper part of the Wood alloy disk is connected with a fixed piece, and a through hole is arranged on the fixed piece, the structure is simple and the installation is convenient. It is used to quickly determine the specific location of insulators damaged by flashover in high-voltage power transmission lines.

Description

Insulator Flashover Indicator

technical field

The utility model relates to a fault indication device in the operation of a high-voltage power transmission line, in particular to a position indication device for insulators damaged by flashover.

technical background

More than 60% of insulation accidents in high-voltage transmission lines and ultra-high-voltage transmission lines are related to insulator surface flashover. After the flashover, the flashover arc will cause irreversible permanent insulation damage to the surface of the insulator, which may cause fault tripping. When a fault trip occurs, the location of the fault point should be determined in time; if no fault trip occurs, the fault inspection personnel also hope to quickly determine where the fault occurred, so as to replace the insulator string burned by the arc in time, eliminate the hidden fault, and restore The insulation level of the line improves the safety and reliability of the operation.

At present, microcomputer relay protection devices have the function of fault location, but due to the inaccurate measurement of the original impedance of the line, the change of the fault grounding impedance due to the grounding condition, and the change of the arc resistance, the fault location provided is not accurate enough. However, other insulator flashover indicators have a large number of components and complex structures, and the installation procedures are cumbersome.

content of the invention

The purpose of this utility model is to provide an insulator flashover indicator with simple structure and convenient installation.

In order to solve the above-mentioned technical problems, the utility model comprises: two matched Wood alloy disks, the upper part of the Wood alloy disk is connected to a fixed piece, and a through hole is arranged on the fixed piece.

Wood alloy discs are semi-circular.

A colored paint layer is arranged on the outer surface of the Wood alloy disc.

The main body of the utility model is only composed of two matched Wood alloy discs, and the structure is simple. When installing, just fix the disc on the lanyard on the upper end of the insulator. When the line flashover occurs, the disc bursts, and the line-finding personnel determine the fault location according to whether the disc falls, and repair the insulator in time to ensure the normal operation of the line.

Description of drawings

Fig. 1 is the front view of the utility model insulator flashover indicator.

Fig. 2 is a left view of the insulator flashover indicator of the utility model after it is fixed with bolts.

Fig. 3 is a top view of the insulator flashover indicator of the present invention.

Detailed ways

The utility model is composed of two semi-circular Wood alloy discs 1 paired together, the Wood alloy discs are riveted with a fixing plate 2, and a through hole 3 is opened on the fixing plate. During installation, separate the two Woodmetal discs, hold the lanyard on the insulator, and then use bolts to pass through the through hole 3 to fix the fixing pieces of the two discs. When the arc develops to the Wood alloy disk, because the arc can generate a high temperature of 9,000°C-20,000°C, and the Wood alloy will melt at 100°C-120°C, the Wood alloy disk will be partially melted due to the melting of the disk. Under the action of the insulator, the lanyard falls off from the insulator, so that the line patrol personnel can clearly find the fault point where the flashover occurs, and accordingly eliminate the line fault in time.

As an improvement of the utility model, a colored paint layer is arranged on the outer surface of the Wood alloy disk, so that it is easier for line inspectors to find fault points.

Claims (3)

1. insulator arc-over indicator, it is characterized in that: it comprises two involutory Wood's metal discs (1), and the top of Wood's metal disc is connected and fixed sheet (2), and establishes through hole (3) on the stator.

2. insulator arc-over indicator according to claim 1 is characterized in that: described Wood's metal disc is a semi-round ring shape.

3. insulator arc-over indicator according to claim 1 and 2 is characterized in that: described Wood's metal disc outside surface is established the colored paint layer.

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