Direct-buried type power transmission line protection device

Abstract

The present invention discloses a direct-buried type power transmission line protection device. The direct-buried type power transmission line protection device comprises a buried cable protection device, a vibration alarm device and an overvoltage warning device; the buried cable protection device comprises a buried cable, a trapezoidal protective shell, a stainless steel pipe and a fully-cold shrinkage intermediate joint, wherein the trapezoidal protective shell is located at the underground part of the buried cable, the stainless steel pipe is located in a part of the buried cable which passes through a ditch, and the fully-cold shrinkage intermediate joint is used for connecting buried cables; the vibration alarm device comprises a vibration sensor, a display device and an alarm device; and the overvoltage warning device comprises a dedicated voltage divider for voltage detection, an overvoltage data acquisition system, an overvoltage detection server and a threshold determination host. With the direct-buried type power transmission line protection device of the present invention adopted, the buried cable can be better protected, maintenance can be facilitated, and fault warning can be carried out.

Description

technical field [0001] The invention relates to the technical field of grid erection, in particular to a direct-buried power transmission line protection device. Background technique [0002] Driven by economic development in recent years, my country's electric power industry has shown a trend of vigorous development. The urban distribution network load and power supply have increased significantly year after year. However, correspondingly, the grid structure of most urban distribution network systems is still very small. Weakness, especially the relatively backward planning of the early distribution network and the relatively outdated distribution equipment, have become obstacles to the development of the distribution network. [0003] At present, most of the transmission lines are laid by means of overhead. The laying method has the advantages of low construction cost, short construction period, low technical requirements, and convenient maintenance. Therefore, except for s...

AI Technical Summary

Problems solved by technology

However, overhead transmission lines have many disadvantages. First, the operating conditions are affected by the natural environment. Because overhead lines are placed in the wild, they are often eroded by natural weather, environmental pollution, and artificial damage.

The second is to occupy land, which needs to be requisitioned and set up line corridors, which greatly increases the initial investment cost of line construction

[0004] To protect the natural environment, overhead circuits cannot be used in tourist landscape areas and natural environment protection areas. Cables in tourist landscape areas and natural environment protection areas usually use cable direct-buried transmission methods, but direct-buried transmission lines are vulnerable to natural disasters, animals And the damage of external factors, natural disasters include typhoon or short-term strong convective weather, earthquake, landslide, rain and snow freezing and other disasters; buried cables will be damaged by ground construction operations such as digging, drilling and pipe jacking operations ;In nature reserves, many animals have the nature of digging holes to build nests, and it is easy to dig into buried cables, which will not only cause power failures, but also endanger the lives of animals

[0005] Existing buried cables will inevitably be affected by natural disasters, animals and external factors and cause power outages. All-round inspection of the power transmission area reduces the maintenance efficiency, and burying it underground also increases the difficulty of maintenance. At the same time, the existing direct-buried transmission lines cannot provide fault warning and can only be repaired passively instead of early warning. Carry out early maintenance in faulty areas

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