SU1210226A1 - Device for determining location of break of remote supply circuit - Google Patents

Abstract

The invention can be used in monitoring equipment of wired: paths of communication systems. The device is simplified by using at each unattended regeneration point (NRP) 1 amplifier 2, capacitor 3, frequency-dependent two-terminal 4, straight wire (PC) 5 and return wire (SP) 6 of the remote power supply circuit. In the event of a break in PP 5 or OP 6, all OPs 1 located before the distance of the remote power supply circuit create circuits for the flow of alternating current through the capacitor 3 and the frequency-dependent two-terminal 4, the parameters of which and frequency f are chosen. By measuring the alternating current in the remote supply circuit at the serviced point, it is possible to determine by its value the section where the breakage occurred. 1 il. (Ls

Description

one

12

The invention relates to telecommunications technology and can be used in equipment monitoring wired paths of communication systems.

The purpose of the invention is to simplify the device,

The drawing shows a structural electrical circuit of the proposed device.

The device for determining the location of the remote power supply circuit breakdown contains on each unattended regeneration point 1 an amplifier 2, a capacitor 3, a frequency-dependent two-terminal circuit 45 direct 5 and a reverse 6 wires of the remote supply circuit.

The device works as follows.

In the initial state, when the remote power supply circuit is in order, the resistance of the frequency-dependent two-terminal 4 is short in terms of the current flow by leakage of one of its elements and therefore is very high, the proposed power supply does not have any remote power supply. With the appearance of a break in the direct wire 5 or the return wire 6 of the remote power supply circuit, from the service point from a sinusoidal voltage generator (not shown) on the straight wire 5 and the return wire 6 of the specified remote power supply circuit to unattended regenerative points 1J located between served by the point and place of the cliff, begins to receive a signal with a frequency f.

At all unattended regeneration points 1 located up to the point where the remote power supply circuit is broken, circuits are created for the flow of alternating current through the capacitor 3, which is connected parallel to the amplifier 2.

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and frequency-dependent two-port 4. The frequency f and the parameters of the frequency-dependent two-port 4 are chosen so that the complex resistance module of the latter is much greater than the resistance of the remote supply circuit regeneration section and much less than the complex resistance-leakage module and leakage. Then we can assume that the current at the output of the generator, sinusoidal voltage is approximately equal to the sum of the currents flowing through the frequency-dependent two-terminal 4

ten

fS

20

25

thirty

T

12

+ I

L 5

where I is the current in the remote power supply circuit with an open circuit at K -; - 1 regeneration site; 1, Ig,

..., 1р. -current through frequency-dependent two-terminal 4 corresponding un-serviced regeneration points 1, As a result, at the serviced point, you can measure the alternating current in the remote power supply circuit and determine by its value the portion where the break occurred.

Claims (1)

Invention Formula Device for determining the location 35 of the remote power supply circuit breakage,. An observational amplifier connected to the direct wire of the remote power supply circuit, characterized in that, in order to simplify the device, a capacitor connected in parallel to the amplifier and a frequency-dependent two are introduced: a polarizer connected between the output of the amplifier and reverse wire of remote power circuit 45. T 12 + I L 5 where I is the current in the remote power supply circuit with an open circuit at K -; - 1 regeneration site; 1, Ig, ..., 1р. -current through frequency-dependent two-terminal 4 corresponding un-serviced regeneration points 1, As a result, at the serviced point, you can measure the alternating current in the remote power supply circuit and determine by its value the portion where the break occurred. Invention Formula