35kv 3-phase dry type hollow current-limiting reactor

Abstract

The invention relates to a 35 kV three-phase dry-type air-core current-limiting reactor, which includes a coil, an insulating cylinder, and an upper and lower support plate, and is characterized in that the coil of the reactor is wound on the insulating cylinder with a copper stranded wire composed of a plurality of thin copper wires. On the outside, the copper stranded wire is covered with an insulating layer, and the outside of each layer of coil is coated with epoxy resin curing agent; between each layer of coils, there is an F-class insulated cold-drawn air duct strip, and its upper and lower ends are provided with terminal insulation. The thickness of the end insulation is the same as the diameter of the wire; pass through the air duct strip and the end insulation through the insulation thread, and rivet the air duct strip to the end insulation and the supporting plate. It has the advantages of simple and reasonable structure, strong ability to resist short-circuit current, good electrical performance, small size, light weight, small loss and low noise.

Description

technical field [0001] The invention relates to a dry-type hollow current-limiting reactor. Background technique [0002] The dry-type air-core current-limiting reactor has only coils and no iron core. The magnetic circuit is a non-magnetic material with a large reluctance and a small inductance value. There is no saturation phenomenon. The inductance value is a constant. Due to the good electrical It is widely used in various fields of electric power engineering and modern electric engineering, and is an indispensable and important equipment for electrical engineering. [0003] There are three types of traditional dry-type air-core current-limiting reactors. One is to use concrete to pour the wound reactor coil into a solid whole called a cement reactor. This cement current-limiting reactor is large in size, heavy in weight, and too cumbersome. Second, it is called a wrapping reactor wound with variable wire diameter (small wire diameter) aluminum wire. The aluminum wire ...

AI Technical Summary

Problems solved by technology

One is to use concrete to pour the wound reactor coil into a solid whole called a cement reactor. This cement current-limiting reactor is large in size, heavy in weight, and too cumbersome.

Second, it is called a wrapping reactor wound with variable wire diameter (small wire diameter) aluminum wire. The aluminum wire of this current-limiting reactor is easy to oxidize, has poor mechanical strength and low service life.

Third, use a pressure plate and a pull rod to tighten the wound reactor coil, which is called a clamping reactor. This kind of current-limiting reactor has poor moisture-proof performance and large additional losses.

The above three reactors cannot achieve the best results in the operation of the power system

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