Distributed fiber optic cable monitoring system for high-voltage cable external rupture prevention, host, pemasok, manufacturer-INNO

High voltage cables that are directly buried or laid through pipes are usually buried underground. In addition to their own manufacturing quality or underground corrosion, the important factors causing damage to high-voltage cables are human mechanical external forces. Due to the weak awareness of power facility protection and unorganized and barbaric construction by some construction units, large construction machinery such as pipe jacking machines, pengemudi tiang pancang, and crushers often damage the high-voltage cable body, causing varying degrees of damage to the cable body, and even causing line tripping. According to statistics, there have been 75 failures of high-voltage cable bodies in the past decade, mainly due to external damage caused by construction, accounting for as much as 70% 67% is the main cause of the main body failure; Next are product quality reasons and improper construction and installation, which are 12% Dan 6% masing-masing 7%

Saat ini, for the supervision of the construction of high-voltage cable lines, the operation and maintenance units mainly adopt methods such as manual irregular inspections, distributing promotional materials, and signing safety disclosure agreements. Namun, the inspection personnel need to complete the prescribed inspections and defect elimination work every month, resulting in blind spots in the inspection cycle and the inability to achieve external damage hazard warning. Karena itu, traditional operation and maintenance methods cannot achieve the expected results, and there are still many barbaric constructions. Some construction sites have installed simple video surveillance devices, which to some extent strengthen real-time supervision of the construction site. Namun, this method can only achieve limited monitoring of fixed construction points, and the outdoor power supply method adopts solar energy+battery, which is greatly affected by weather factors. Dalam kebanyakan kasus, manual detection of external hidden danger information is required for early warning, which has certain limitations.

A monitoring and early warning system for preventing external damage of high-voltage cables based on serat optik terdistribusi penginderaan getaran. This system does not require the installation of other equipment along the pipeline. By utilizing the vibration signal of laying optical fibers in the same trench as the high-voltage cables, it intelligently identifies the types of mechanical external damage of the entire high-voltage cable line and actively sends warning information.

Fiber optic is both a sensor and a transmission channel. Dibandingkan dengan sensor listrik tradisional, sensor serat optik have advantages such as high measurement accuracy, ketahanan yang kuat terhadap interferensi elektromagnetik, bahan ringan, keamanan saluran yang baik, jarak pengukuran yang jauh, dan pengukuran terdistribusi terus menerus. Dengan mengubur atau meletakkan serat optik pendeteksi pada struktur yang dipantau, berbagai informasi fisik seperti suhu, menekankan, tekanan, dll.. struktur dapat diperoleh melalui sinyal optik, sehingga mencapai pemantauan kondisi abnormal secara real-time.

Distributed fiber optic cable monitoring and early warning mode for high-voltage cable external rupture prevention monitoring

Keseluruhan sistem terdiri dari a host pemantauan penginderaan getaran serat optik terdistribusi, tuan rumah analisis, dan platform sistem pemantauan kerusakan anti eksternal. Semua peralatan host dipasang di kabinet yang sama di ruang komunikasi gardu induk. Host pemantauan dapat melakukan pemantauan segala cuaca terhadap bahaya kerusakan eksternal di sepanjang kabel tegangan tinggi yang dipasang di parit yang sama dengan memanfaatkan satu inti serat optik mode tunggal cadangan yang sudah dipasang di dalam pipa., yang meliputi bisnis komunikasi kabel optik. Tidak perlu memasang serat optik multi-mode lainnya untuk mentransmisikan dan merasakan sinyal getaran.

Karakteristik dari distributed fiber optic cable monitoring

① No installation is required along the route, and one core of spare serat optik from the communication optical cable is taken as the sensing and transmission channel to connect to the monitoring host;

② No blind spots in the entire construction line, achieving monitoring of external damage to high-voltage cables throughout the line;

③ The system architecture is simple, requiring only the installation of monitoring and analysis hosts in the communication room of the substation, without the need to install any additional sensors on the line;

④ A comprehensive warning system is in place. When there is a large machinery operating near the optical cable, the system will issue a warning and distinguish the alarm levels based on different threshold settings. Jika mesin besar berjalan di dekat kabel optik atau bersinggungan dengan jalur kabel optik dalam waktu singkat, the system will only record external damage hazards and will not issue warning messages It can identify the vibration signals of crushers, ekskavator, mesin jacking pipa, mesin eksplorasi, pengemudi tiang pancang, mesin genggam (seperti pick udara), dan operasi threading pipa bawah tanah. Sinyal pergerakan dan pengoperasian mesin konstruksi besar dapat dibedakan secara akurat.