Leakage protection system based on underground cable

Abstract

The present invention discloses a leakage protection system based on an underground cable. The system comprises a cable body arranged under a ground and a protection layer arranged at the outer side of the cable body. A gap is arranged between the cable body and the protection layer. The protection layer is subjected to protection separation through isolation plates with an interval of 1km, one end of each of the isolation plates is connected to an inner wall of the protection layer, and the other end is connected to an outer wall of the cable body. Each section of the isolated protection layer is internally provided with different alarm modules and detection modules. The control center receives signals sent by the alarm modules, carries out real-time monitoring on the running condition ofthe cable, and cut off power transmission of the cable body after receiving alarm signals of the alarm modules. The gap between the cable body and the protection layer is provided with various detection modules and alarm modules, the condition of the cable can be timely detected, detected data can be sent to the control center in real time, and the staff of the control center understands the working condition of each section of the cable.

Description

technical field [0001] The invention relates to a leakage protection system, in particular to a leakage protection system based on underground cables. Background technique [0002] Overhead line power supply operation has a relatively high failure rate, high operation and maintenance costs, and low reliability. Now underground power cables are popularized in cities. However, when the insulation layer of the underground power cable is damaged and a leakage fault occurs, it is difficult to judge the leakage situation and location by conventional methods, and a special detection device is required for detection. Leakage detection devices usually use the method of measuring the grounding resistance of cables. Although this method is scientific and has high detection accuracy, it needs to be operated by professionals and is cumbersome. Contents of the invention [0003] The technical problem to be solved by the present invention is that it is difficult to detect the fault sect...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that it is difficult to detect the fault section after the electric leakage of the mother underground cable, and the cost is high, and the effective electric leakage protection cannot be carried out after the electric leakage of the cable. The purpose of the present invention is to provide an electric leakage protection system based on the underground cable to solve above question

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