Hollow coupling reactor

Abstract

A hollow mutual reactor belongs to reactor devices, and solves the problem that a coupling coefficient of the prior hollow mutual reactor is small. The invention provides a first form comprising mutually independent three-phase reactors, wherein, each phase reactor consists of coupling coils, a patching panel and a supporting insulator; the coupling coils consist of an inside coil and an outside coil with leads in opposite winding directions; a hollow coaxial cylinder is formed by winding; the outside coil winds outside the inside coil; and the inter-turn and the interlayer of the inside and the outside coils are all insulated. The invention further provides a second form comprising mutually independent three-phase reactors, wherein, each phase reactor consists of coupling coils, a patching panel and a supporting insulator. In each phase reactor, two or more coupling coils with different inside diameters are nested in turn with each other from inside to outside to form nesting coils, and the layers of the coupling coils are insulated and have air gaps for heat dissipation. The hollow mutual reactor has the advantages of low noise, good linearity, high mechanical strength, great stability margin, high coupling degree between arms of the mutual reactor, and small leakage reactance.

Description

technical field [0001] The invention belongs to a reactor device, in particular to a tightly coupled air-core coupled reactor. Background technique [0002] With the continuous strengthening of power system networking, the short-circuit capacity of the system is getting larger and larger, exceeding the breaking capacity of the circuit breaker. Fault current limiting interruption is an option. Traditional current-limiting reactors are connected in series in the power system. Even when the power system is working normally, the reactor shows a large impedance, which greatly reduces the transmission capacity and stability of the system. The split reactor is a cement reactor with a middle tap. When in use, the middle terminal is connected to the power supply, and the first and last terminals are connected to the load. During normal operation, the current direction of the two arms of the split reactor is opposite, and the coils of the two arms are wound in the same direction. Du...

AI Technical Summary

Problems solved by technology

[0004] The air-core coupling reactor provided by the present invention solves the problem of small coupling coefficient of the existing air-core coupling reactor, realizes high coupling degree between each phase and each arm of the reactor, and small leakage reactance

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