Ultrahigh-voltage air-core reactor

Abstract

The invention discloses an ultrahigh-voltage air-core reactor which comprises a coil, a grading ring and a support insulator, wherein the coil comprises an upper coil, a lower coil, an insulating layer and at least two wiring terminals, a nut at the lowermost end of the upper coil and a nut at the uppermost end of the lower coil need to be connected through a connecting rod to connect the upper coil and the lower coil in series. The coil is of an inner shielding type winding structure, and at least two wiring terminals are connected to the side face of the outer ring of the winding, penetratethrough the insulating layer, extend to the outer side of the winding and are fixed to the supporting plate to facilitate external wiring. The coil clamping device comprises an upper star-shaped frame, a lower star-shaped frame and a connecting component, the upper star-shaped frame and the lower star-shaped frame are installed at the upper end and the lower end of the coil respectively and connected through the connecting component to vertically clamp the coil, and the rigid connecting component supports the coil on the inner wall of the coil by a circle to integrally form a stable structure.The reactor is compact and novel in structure, small in size, light in weight, good in heat dissipation effect, high in withstand voltage, capable of achieving multi-capacity service, small in installation space and high in practicability.

Description

technical field [0001] The application belongs to the technical field of air-core reactors, and in particular relates to an ultra-high voltage air-core reactor. Background technique [0002] Air-core reactors generally adopt a multi-encapsulation, multi-layer, multi-branch parallel structure of small-section round aluminum wires. The wires are made of conventional voltage-resistant insulating materials, and the winding envelope is reinforced with epoxy resin glass fiber materials. The high-strength aluminum alloy star frame is used for clamping, and the epoxy glass fiber pull belt is tightened to make the reactor winding a rigid whole. However, for air-core reactors with high voltage, large inductance, and multiple taps, the reactor wire diameter is required to be single and the number of turns is very large, the requirements for withstand voltage are high, the requirements for creepage distance are high, and there are many taps and outlets. According to the conventional air...

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Problems solved by technology

However, for air-core reactors with high voltage, large inductance, and multiple taps, the reactor wire diameter is required to be single and the number of turns is very large, the requirements for withstand voltage are high, the requirements for creepage distance are high, and there are many taps and outlets. According to the conventional air-core reactor structure It is said that the volume will be super wide and super high, and the multi-tap outlet structure is too complicated to realize

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