Dry-type transposed conductor air reactor for pre-burying optical fiber Bragg optical grating temperature measuring shape-changing sensor

Abstract

A dry-type transposed conductor air reactor for pre-burying an optical fiber Bragg optical grating temperature measuring shape-changing sensor comprises the optical fiber Bragg optical grating temperature measuring shape-changing sensor, a dry-type air reactor common inter layer structure, a transposed conductor coil winding, a glass fiber packaging layer (a glass-fiber-added cotton belt) and an epoxy glue layer. The dry-type transposed conductor air reactor is characterized in that the optical fiber Bragg optical grating temperature measuring shape-changing sensor is pre-buried in the dry-type air reactor based on the transposed conductor technology, the coil winding of the dry-type air reactor is formed by winding a flat aluminum stranded conductor, and a reactor coil is packaged through glass fiber of the glass-fiber-added cotton belt immersed by epoxy resin. By means of the dry-type transposed conductor air reactor, the high-voltage-resisting level can be improved, temperature rising can be reduced, and the safety of high-voltage power transmission and distribution is improved.

Description

technical field [0001] The invention belongs to the technical field of reactors, especially dry-type air-core reactor structures. Background technique [0002] Reactors are used in power systems to limit short-circuit current, reactive power compensation and phase shifting. In the construction of the national high-voltage power transmission grid, various types of reactors and windings of high-voltage electrical appliances must withstand high voltage, while reducing power loss and ensuring the safety of power transmission and distribution. [0003] Compared with oil-immersed and iron-core reactors, dry-type air-core reactors have an oil-free structure, which eliminates the shortcomings of oil-immersed reactors such as oil leakage and flammability. There is no iron core, no ferromagnetic saturation, and the linearity of inductance is good. . The coils of the existing dry-type air-core reactors are mostly made of traditional single-strand multiple round wires wound togethe...

AI Technical Summary

Problems solved by technology

Due to the large diameter of the coil of the dry-type reactor, in the coil wound in parallel by the traditional method, the difference in the diameter of the inner and outer wrapping of each circle can reach the width of the diameter of 2 wires, resulting in the multi-layer winding, the length of each wire, There is a large difference in resistance, magnetic leakage flux is generated during operation, and eddy currents are generated in the wires, resulting in loss of electric energy. The heat generated by heating will cause the deformation of the reactor to a certain extent, and there is a great potential safety hazard.

Ordinary aluminum wires are single-wound, the wires cannot withstand high voltage, and cannot meet the needs of ultra-high voltage power transmission and transformation

[0004] The original glass fiber layer only has warp fibers and no weft fibers, so it is easy to have transverse cracks between fibers, which will destroy the insulation effect and reduce the withstand voltage level

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