JPS61104267A - Apparatus for automatically monitoring insulation of transmission line - Google Patents

Abstract

PURPOSE:To judge the deterioration degree of an insulator at the receiving point of a remote place, by attaching an optically operated current and voltage detector to the arc horn in the earth side in a wound state and transmitting the change in the current and voltage of an insulator group under the activity of a transmission state by an optical cable. CONSTITUTION:In a transmission iron tower wherein conductors 9 are constructed to the insulators 6 attached to the arm metals 8 of an iron tower 11, an arc horn 7 is attached to the conductor and earth side of each insulator so as to provide a discharge interval 12 different at every transmission voltage. An optically operated current and voltage detector 1 is attached to the earth side arc horn in a wound state and an amplifier 2 and a transmitter 3 are connected to an electric or optical cable 4 and the change quantities of a current and voltage at the receiving point of a remote plate are made readable so that the change in the current and voltage are transmitted under the activity of the transmission state of the insulator group by an optical cable 5 and the deterioration degree of each insulator can be judged. If a junction device 13 is provided to the leg part of the iron tower so as to enable transmission and reception, correspondence in the site is also enabled.

Description

[Detailed Description of the Invention] Deteriorated insulators on power transmission lines can be detected by actually measuring voltage changes in each insulator chain on-site or visually inspecting them, and communicating by using wireless communication, etc. As this is the norm, the work involved working on live wires at high places while the power was being transmitted, which was inefficient due to safety issues.

The monitoring device of the present invention automatically detects the insulation deterioration of a group of power transmission line insulators from a remote electric station, etc., and also enables on-site detection.It also makes a sound when patrolling the line, and also communicates work by optical telephone.
This is done in a smooth and safe manner.

To explain this device with a diagram, in a power transmission tower in which a conductor 9 is installed on an insulator 6 attached to an armrest 3 of a steel tower 11, the conductor side and the ground side of the insulator have 12 different discharge intervals for each power transmission voltage. An arc horn 7 having a similar structure is attached.

Light-activated current in the earth-side arc horn. A voltage quantity detector 1 is wound and attached, an amplifier 2 and a transmitter 3 are connected by an electric or optical cable 4, and the current and voltage changes under the live wire of the insulator group are transmitted by the optical cable 5. If the amount of change can be read at a remote receiving point, the degree of deterioration of each insulator can be determined.

Furthermore, if a connector is installed on the leg of each steel tower, as shown in 13, so that it can receive and transmit signals, it is also possible to respond on-site.

By adding an optical communication telephone function to the splicer 13, it becomes possible to make telephone calls during railway safety patrols.

The overhead optical cable is an overhead ground wire 10 installed at the top of the steel tower.
It is also possible to use railway lines constructed using

[Brief explanation of the drawing]

Figure 1 is an overall view of the suspended insulator hanging steel tower with this monitoring device installed, Figure 2 is a partial view of the installation of a V-type suspended insulator, and Figure 3 is a partial view of the installed state of the discharge amount detector. show. 1: Discharge amount photodetector 2: Optical converter 3: Optical converter 4: Optical or electrical cable 5: Optical cable
6: Insulator 7: Arch horn 8: Arm for attaching insulator 9
: Power transmission conductor 10: Overhead ground wire 11: Steel tower
12: Arc horn spacing 13: Optical splicer

Claims (1)

[Claims] A discharge amount detector using an optical cable is attached to the earth side arc horn attached to the insulator of the power transmission line, and the optical cable measures changes in the amount of discharge due to deterioration of the insulator, so that deteriorated insulators can be automatically detected. We also offer an optical cable splicer that can also be used as an optical communication phone for security patrols.
Automatic insulation monitoring device for power transmission lines installed at each tower leg