SU843069A1 - Device for determining approach of power transmission line wires to each other at wind - Google Patents

Description

(54) DEVICE FOR DETERMINATION OF ELECTRICAL TRANSMISSION WIRES APPROACH TO WIND

one

The invention relates to power engineering and can be used to experimentally determine how power transmission wires approach each other in the wind.

The closest technical solution to the present invention is a device for determining the approach of the wires of transmission in the wind, containing a thread with a load ,. attached to the wire, and displacement meter 1.

 A disadvantage of the known device is the low measurement accuracy and the impossibility of continuously detecting the movement of wires, since it only determines the maximum convergence of wires for a fixed period of time. In addition, setting up and maintaining the device is fraught with great difficulty, since it is installed at the height of the wire. sa wires in the middle of the span.

The purpose of the invention is to increase the accuracy of measurement and implementation of continuous registration of the approach,

This goal is achieved by the fact that the device for determining the convergence of the wires of electrical transmission in the wind, containing a thread with a load.

attached to the wire, and a displacement meter, equipped with an additional thread with a weight, attached to another wire, the meter is made in the form of guides with a scale, in each of which the specified load is placed, and the distance between the directions is cadmium less than the distance between the wires .

FIG. 1 shows the span of a line with the proposed device installed therein; the general view in FIG. 2 shows section A-A in FIG. 1 in FIG. 3 shows a section BB in FIG. 2

The device for determining the approach of the power transmission wires in the wind contains filaments 1 (according to the number of wires 2), rigidly fixed at one end to the wires 2. The other end of the filaments 1 are suspended by loads 3 placed movably in vertical directions 4 with the scale of reference made glass cylindrical tubes. The guides 4 are mounted on the stand 5. In order to accurately and continuously fix the approach of the wires 2, a camera 6 is installed in front of the device. At the same time, fixing marks 7 are mounted on the threads 1

D

so that they fall into the filming area.

The device works as follows.

When a wind current is applied to the power lines 2, they swing around the axis connecting their suspension points. When the wire 2 is flipped relative to the vertical, the thread 1 is fastened together with it, fixed at the end with the wire 2. The load 3 suspended on the thread 1 moves in vertical guides 4 with a reference scale calibrated in accordance with the amount of displacement of the wire 2 from the vertical. The fixing marks 7 serve to distinguish the convergence of the wires 2 from their divergence in the process of oscillation during filming. The convergence of the wires 2 is determined by the values of reloading the loads 3 in vertical directions xxih 4. The weight of the load 3 is chosen so that the thread 1 in the equilibrium position of the wire 2 is in a tensioned state.

The device is installed in the middle of the span (pilot or existing overhead line).

Using the proposed device, an oscillogram (picture) of the oscillatory process of a wire in horizontal or vertical planes is obtained, which is of practical importance when studying oscillations of wires of an electricity transmission.

Claims (1)

1. Problems of General Energy and the Unified Energy System, 1971, no. 5, s. 118-119, fig. one. Ng UJ.1 2 th / g