Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier

A technology of shielding layer and power line, which is applied in the field of power line carrier communication, can solve the problems of difficulty in construction, cost and unsatisfactory alarm performance, etc., and achieve good market prospects and the effect of ingenious ideas

Active Publication Date: 2012-09-12
STATE GRID ELECTRIC POWER RES INST +2
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  • Claims
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Problems solved by technology

These three types of anti-theft measures are not satisfactory i

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  • Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier
  • Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier
  • Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] The cable anti-theft monitoring method based on the medium-voltage power line shielding layer carrier of the present invention is suitable for anti-theft monitoring of medium-voltage power lines in power transmission and transformation systems. The principle of the cable anti-theft monitoring method is as follows: figure 1 As shown, a complete carrier signal circuit is composed of "medium voltage power line 600 shielding layer 610+ shielding layer grounding wire 700+ earth 800" ( figure 1 Indicated by the dotted line in the middle), normally, the carrier signal can be transmitted between the master carrier machine 400 and the slave carrier machine 500 via the carrier signal loop. When the shielding layer 610 of the medium-voltage power line 600 is damaged, the carrier signal circuit formed by the shielding layer 610 of the medium-voltage power line 600, the shi...

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Abstract

Disclosed is a real-time antitheft monitoring method for cables based on a medium voltage power line shielding layer carrier. A carrier communication channel is built by the aid of a cable shielding layer, signals are remotely transmitted from a carrier machine and are coupled onto the cable shielding layer through an inductive coupler by means of the electromagnetic induction principle, a main carrier machine at a master station receives the signals transmitted from the carrier machine through the inductive coupler, signal quality is analyzed and determined, the main carrier machine uploads signal quality information to a monitoring master station through a carrier communication management machine, and the monitoring master station judges whether the cables are stolen or not according to signal strength. A plurality of outlet cables can be detected in an online manner, and related personnel can rapidly shoot troubles according to warning information. The real-time antitheft monitoring method is ingenious in conception and has a fine market prospect, and online antitheft monitoring for medium voltage cables is realized by the aid of signal channel circuit characteristics of an existing shielding layer.

Description

technical field [0001] The invention relates to a real-time anti-theft monitoring method for cables based on medium-voltage power line shield layer carrier, and belongs to the technical field of power line carrier communication. Background technique [0002] At present, the application of cables is gradually increasing, and the safety of cables is becoming increasingly important. The cable is mainly composed of five parts: conductor core wire, insulating layer, semiconducting layer, metal shielding layer, and outer sheath layer. Wrapped on the outside of the core wire insulation layer, it is generally copper tape, and the metal sheath is made of steel tape (wire), aluminum, copper or stainless steel. With the rise of copper prices, the phenomenon of cable theft is becoming more and more serious, which seriously affects the quality of cables. life, and even lead to major safety accidents. [0003] At present, cable anti-theft monitoring measures are mainly divided into thre...

Claims

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Application Information

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IPC IPC(8): G08B13/22H02J13/00
Inventor 许盛易浩勇蔡世龙樊强刘柱
Owner STATE GRID ELECTRIC POWER RES INST
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