Short-circuit winding based vibration suppression method of iron core reactor

Abstract

The invention discloses a short-circuit winding based vibration suppression method of an iron core reactor. A short-circuit winding is arranged on a return yoke at one side of the iron core reactor, pulse vibration magnetic flux is generated in an iron core when an alternating current passes through a main winding of the iron core reactor, an electromotive force and a current are generated in the short-circuit winding by induction, the electromagnetic process of the short-circuit winding is the same as that of a secondary winding of a transformer in short circuit, total magnetic flux of turn chains of the short-circuit winding is formed by superposing magnetic flux passing through the short-circuit winding with magnetic flux generated by an induction current in the short-circuit winding, the magnetic flux passing through the short-circuit winding lags behind magnetic flux which does not pass through the short-circuit winding in a phase, an electromagnetic force exists between iron core cakes all the way, and thus, the vibration and the nose of the iron core of the reactor are greatly reduced; and theoretical analysis and experiment show that the short-circuit winding has an obvious effect on vibration suppression of the iron core reactor. The integral structure of the iron core reactor is not changed, the short-circuit winding is relatively low in a winding process requirement of the winding, and mechanical processing is facilitated.

Description

technical field [0001] The invention belongs to the technical field of electric equipment, and in particular relates to a method for suppressing vibration of an iron core reactor based on a shorted winding, which can be applied to the research, manufacture and operation of iron core reactors of various voltage levels. Background technique [0002] The reactor is an inductive element, which is often connected between the phase and the ground, between the phase and the neutral point of the power system, to absorb the capacitive reactive power in the power grid, and to suppress the synchronous motor that may occur under light load conditions. The self-excitation phenomenon of the long-distance transmission line weakens the boost phenomenon caused by the capacitive effect at no-load and light load, and plays the role of protecting and stabilizing the power system. It is an indispensable electrical equipment in the power system. Its normal operation related to the stability of th...

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Problems solved by technology

[0004] Due to its working principle and its own structure, the iron core reactor will be accompanied by vibration and noise during operation. If the vibration amplitude is large...

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