Distributed buried cable channel hidden danger monitoring system

Abstract

The invention provides a distributed buried cable channel hidden danger monitoring system. The system comprises a coupler C1, a coupler C2, a coupler C3, a coupler C4, a coupler C5, a computer, a broadband light source S1 and a long coherent light source S2, wherein both the broadband light source S1 and the long coherent light source S2 are connected with the coupler C1 through optical fibers; the coupler C1 and the coupler C2 are connected through an optical fiber; the coupler C2 is electrically connected with a photoelectric detector D3 and a photoelectric detector D4; the coupler C2 is connected with each of the coupler C3 and the coupler C5 through optical fibers; and the coupler C3 and the coupler C5 are electrically connected with a photoelectric detector D1 and the photoelectric detector D2, respectively. The distributed buried cable channel hidden danger monitoring system is reasonable in design, and uses a Sagnac distributed interference technology in safety maintenance of 10kv distribution lines of electric systems for the first time, thereby providing a complete technical scheme for the timely discovery, timely alarm and emergency repair of line breakage hidden danger.

Description

technical field [0001] The invention is based on a distributed ground cable channel hidden danger monitoring system, and belongs to the technical field of ground cable channel hidden danger monitoring. Background technique [0002] In recent years, as users have higher and higher requirements for power supply reliability, maintenance of 10kv distribution network lines has increasingly become one of the mainstream tasks of power supply departments, but theft, external damage, and illegal construction have become the biggest hidden dangers affecting the safety of distribution network lines Due to the characteristics of the distribution network itself, such as wide area, many points, long lines, and long-term exposure to the wild, it is more vulnerable to damage, and in recent years, human activities such as urbanization construction, infrastructure construction, quarrying, mining, logging, and road construction have become increasingly frequent. As a result, distribution netwo...

AI Technical Summary

Problems solved by technology

[0003] 1. Encroachment on distribution network line passages, illegal building, stacking, soil extraction, pond digging, tree planting, erection of appendages, etc. Phenomena such as illegal construction of residences in network line passages, illegal stacking of materials and digging ponds are becoming more and more rampant, and the contradiction between urban construction and distribution network line competition has become increasingly prominent. The phenomenon of equipment and tools for maintenance personnel, etc. In some areas, the phenomenon of newly built rural houses being too close to the distribution network lines is very prominent, which has seriously affected the normal operation, maintenance, and repair of power supply lines. It often happens that the original faulty objects refuse to be dismantled and affect the normal construction due to the lack of agreement on compensation issues and the lack of cooperation of a small number of people. New illegal buildings and new plants continue to appear. The difficulty of operation and maintenance, due to the high frequency of such phenomena, wide distribution, and difficult to resolve, is one of the main reasons for external forces to damage distribution network lines

[0004] 2. Illegal construction factors are showing a tendency to occur frequently. Brutal construction and illegal operations are important hidden dangers affecting the safety of the line, especially in the context of the rapid expansion of infrastructure construction scale in recent years, because some construction units do not abide by relevant laws and regulations or check the surrounding area in advance. Incomplete understanding of the distribution of power facilities and improper operation often lead to damage to distribution network lines caused by brutal construction and illegal operations, and the damage caused by such reasons is often serious and harmful. According to incomplete statistics, this kind of phenomenon has occurred in recent years. Dozens of cases have occurred every year in the Hubei area, and it is not uncommon for cars to hit poles and break lines.

[0005] 3. The theft of power line conductors and equipment occurs from time to time. With the rise in the price of metal materials, some criminals vigorously steal ground cables and other equipment. For example, in April 2014, the 10kv ground cable line of Tianjin Power Grid was destroyed overnight Nearly one kilometer of cable was stolen, causing power outages in three large industrial enterprises, which had a serious impact on the economic development and social order of the relevant power supply areas. The theft of cables is extremely destructive to the safe and stable operation of distribution network lines. , Repair in time, it is extremely easy to cause a devastating impact

[0006] In short, the main hidden dangers of distribution network lines are illegal construction operations and cable theft. Their common characteristics are concealment, temporary and suddenness, which are difficult to predict and discover in advance. The existing hidden danger investigation experience shows that timely Discovering all kinds of hidden dangers is the most critical task in the management of line passages. The sooner you find them, the more proactive you are, and the sooner you find them, the more you can take corresponding measures. However, the existing manual hidden danger monitoring methods such as regular line inspections and special personnel squatting have a long cycle. , uncontrollable quality and other deficiencies, while traditional video surveillance devices have disadvantages such as unstable power supply, need for uninterrupted on-duty personnel, and difficulty in relocation and installation. To solve the above problems, for this reason, the present invention provides a hidden danger monitoring system based on distributed ground cable channels

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