Dry-type transposed conductor hollow reactor with embedded fiber bragg grating temperature and deformation sensor
A technology of deformation sensor and air-core reactor, which is applied in the field of reactors, can solve the problems of reducing withstand voltage level, power loss, and destroying insulation effect, and achieves the effects of increasing the surface area of conductors, reducing eddy current loss, and avoiding length differences
Active Publication Date: 2017-01-18
YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST +1
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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 has only 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
Method used
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[0028] See figure 1 , figure 2 , image 3 , Figure 4 A dry-type transposition wire air-core reactor with pre-embedded optical fiber Bragg grating temperature measurement deformation sensor, including conductive arm 1, stay 2, insulating center column 3, encapsulation layer and pre-embedded optical fiber Bragg grating temperature measurement deformation sensor; It is characterized in that three single-layer envelopes 4, 5, and 6 are respectively selected on the inside, middle, and outside of all envelope layers of the reactor, and fiber Bragg grating temperature measurement and deformation sensors are embedded in them; the single-layer envelope is divided from inside to outside. It adopts a dry-type air-core reactor to encapsulate the inner conventional structure 10, a transposed wire coil winding 11, a glass fiber encapsulation layer, a glass cloth tape 12, and an epoxy adhesive layer 13;
[0029] Fiber Bragg grating temperature measurement and deformation sensors are res...
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Dry type transposition wire air core reactor with pre-embedded fiber Bragg grating temperature measurement deformation sensor, including fiber Bragg grating temperature measurement deformation sensor, dry type air core reactor conventional inner structure, transposition wire coil winding, glass fiber encapsulation layer ( Plus glass silk cloth tape), epoxy glue layer. It is characterized in that the optical fiber Bragg grating temperature measurement and deformation sensor is pre-embedded in the dry-type air-core reactor based on the transposition wire technology; the coil winding of the dry-type air-core reactor is made of flat aluminum stranded wire transposition wire; the outside of the reactor coil Epoxy impregnated fiberglass encapsulation with glass ribbons. The invention can improve the high-voltage resistance level, reduce the temperature rise, and improve the safety of high-voltage power transmission and distribution.
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 together. ...
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IPC IPC(8): H01F17/02H01F27/40G01K11/32G01B11/16G01K1/08G01K11/3206
Inventor 陈文雯谭向宇崔志刚陈先富徐雯李蕊张洁
Owner YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST