RU167953U1 - Suspension traction measuring device on a phase wire of an overhead power line - Google Patents

Abstract

The utility model relates to the electric power industry and can be used to determine the mass of ice-frost-frost deposits on the phase wire of an overhead power transmission line. The device for measuring the suspension tension on the phase wire of the overhead power line contains a force sensor 2 mounted in the gap of the suspension of the insulator 3 between the two-webbed ear 4 and the blind clamp 5, and connected through the shielded wire 12 to the housing of the suspension tension device 1, which is an IP-protected capsule, inside of which there is a battery 10, a radio transmitting device 11 and a control board 9, while the housing of the device 1 is mounted on a phase conductor 6 using a power take-off device 7, the inner diameter of the cat cerned corresponds to the diameter of the phase conductor 6 through a dielectric substrate 8, designed to protect the housing elements from overheating in the event of overcurrents. The utility model makes it possible to increase the reliability of the interrogation of the suspension traction sensor, which does not depend on the quality of support grounding. 1 ill.

Description

The technical field to which the utility model relates.

The utility model relates to the electric power industry and can be used to determine the mass of ice-frost-frost deposits on the phase wire of an overhead power transmission line.

State of the art

A known icing load sensor containing a sensing element kinematically connected to a displacement transducer into an electrical signal having an encoder in the form of a set of balls, a reader, and also a contact device that is connected via telemechanics channels to an information receiving device at a control room. However, this device for implementing the method has low reliability due to the possibility of leakage of frost-resistant liquid (oil) poured into the housing, the complexity of revision and repair (it is necessary to drain the oil), the presence of mechanical elements, contact nodes and movable mates that are worn during operation. ([1] RF patent application No. 94038387, IPC H02G 7/16, publ. 09/10/1996).

Known devices for measuring icing load on an overhead power line, directly measuring the weight of the wire with icy deposits using force sensors installed in the gap between the traverse and the insulating suspension ([2] RF patent No. 2291536, IPC H02G 7/16, Н04 В 3/54 , publ. 10.01.2007; [3] RF patent No. 2145758, IPC H02G 7/16, publ. 02.20.2000).

The closest analogue is a device for measuring icy and wind loads on overhead power lines ([4] RF patent for utility model No. 100682, IPC H02G 7/16, H02J 13/00, publ. 20.12.2010), which contains a force sensor, two roll sensors and a temperature sensor suspended between the support beam and a string of insulators with a phase wire; two roll sensors located on the body of the support; a polling controller and a transmitting radio modem located on the traverse; as well as a receiving radio modem electrically connected to the computer. The entered temperature sensor records the ambient temperature, which indirectly determines the temperature of the wire. The polling controller polls the temperature, roll and force sensors, generates information packets and, through the transmitting and receiving radio modems, sends them to a computer, where the data is visualized.

The disadvantage of the prototype is the presence of a wired connection between the sensors of force, roll, temperature, suspended between the traverse and a string of insulators, roll sensors located on the body of the support and the polling controller with a radio modem located on the traverse. Wired communication is used to transmit information and organize the power supply of device elements located between the traverse and the isolating suspension. The presence of wired communication reduces the reliability of the device, especially during a thunderstorm, since when an overvoltage occurs on a support with a high grounding resistance, the potentials of the support body and crosshead are equalized using wired communication of the device for measuring ice and wind loads on overhead power lines. If you refuse wired communication (using wireless communication to transmit information), it becomes difficult to power the sensors of power, roll, temperature, suspended between the traverse and a string of insulators.

Utility Model Essence

The task to which the claimed utility model is directed is to increase the reliability of the interrogation of the suspension tension sensor.

The technical result of the claimed utility model is to increase the reliability of the interrogation of the suspension tension sensor, which does not depend on the quality of the support grounding.

The technical result is achieved due to the fact that the device for measuring the suspension tension on the phase wire of the overhead power line contains a force sensor installed in the gap of the suspension of the insulator string between the two-blade eye and the blind clamp, and connected via a shielded wire to the housing of the suspension tension device, inside of which there is a battery , a radio transmitting device and a control board, while the device housing is mounted on a phase wire using a power take-off device, the size is internally the diameter of which corresponds to the size of the diameter of the phase wire 6, through a dielectric substrate, designed to protect the housing elements from overheating when overload currents occur.

Brief Description of the Drawings

The essence of the utility model is illustrated by drawings, where:

FIG. 1 - device design

pos. 1 - housing - IP-protected capsule

pos. 2 - force sensor

pos. 3 - a garland of insulators (insulator)

pos. 4 - two-webbed eye (or terminal of a polymer insulator)

pos. 5 - a deaf clip (boat)

pos. 6 - phase wire

pos. 7 - power take-off device with phase wire

pos. 8 - dielectric substrate

pos. 9 - control board

pos. 10 - battery

pos. 11 - radio transmitting device

pos. 12 - shielded wire

Utility Model Implementation

A device for measuring the suspension tension on the phase wire of an overhead power transmission line (Fig. 1) contains a metal housing of the device 1 and a force sensor 2 installed in the gap of the suspension of the insulator string 3 between the two-blade eye 4 of the polymer insulator and the blind clamp (boat) 5.

The case - IP-protected capsule 1, is installed on the phase wire 6 using a detachable magnetic circuit of the power take-off device from the phase wire 7, which in turn is fastened with a quick-detachable bolt connection. The size of the inner diameter of the magnetic circuit of the power take-off device 7 is selected for the diameter of the phase wire 6. The housing of the device 1 is connected to the magnetic circuit of the power take-off device 7 through a dielectric substrate 8 with low thermal conductivity. Substrate 8 serves to protect the components of the device from overheating in case of overload currents in the line. The components of the device include a control board 9, a battery 10 and a radio transmitting device 11, which are located inside the housing 1. The suspension traction measuring device is connected to the inputs of the control board 9, the output of which is connected to the input of the radio transmitting device 11.

The device operates as follows.

The radio transmitting device 11, the control board 9, the force sensor 2 receive power from the battery 10, the charge of which is made up from the power take-off from the phase wire 7.

The control board 9 interrogates the force sensor 2 and, through a shielded wire 12 attached to the housing, transmits information to the radio transmitting device 11, which transmits the collected information to the receiving wireless data transmission device.

The described device is capable of working autonomously (the battery charge is replenished by a power take-off device), does not require a wired connection with a receiving unit for organizing data and power transmission, which is usually located on the support body at a distance of 6-8 meters from the ground. The devices for measuring the suspension tension of a phase wire with a connecting wire during a thunderstorm often fail, since through the connecting wire the potentials of the support body are equalized at a height of 6-8 meters and the crosshead during a lightning strike. This is especially often observed with a decrease in the quality of grounding of the support. The described device is galvanically isolated from the receiving unit, so its operation does not depend on the quality of grounding of the support.

Claims (1)

A device for measuring suspension traction on a phase wire of an overhead power transmission line, comprising a force sensor 2 mounted in the gap of the suspension of insulator 3 between a two-web eyelet 4 and a blind clamp 5, and connected through a shielded wire 12 to the housing of the suspension traction device 1, which is an IP-protected capsule inside which there is a battery 10, a radio transmitting device 11 and a control board 9, while the housing of the device 1 is mounted on a phase conductor 6 using a power take-off device 7, the inner diameter it corresponds to the diameter of the phase wire 6, through a dielectric substrate 8, designed to protect the housing elements from overheating when overload currents occur.