A New Iron Core Reactor Considering Force Compensation

Abstract

The invention is applicable to the advanced manufacturing field of power transmission and transformation equipment, and is specifically a new type of iron core reactor considering force compensation, including two layers of iron core column groups symmetrically distributed; the iron core column group is composed of a plurality of iron cores The iron core column is composed of a plurality of iron core cakes, and a winding coil is set outside the iron core column, and an air gap insulation cavity is formed between the winding coil and the iron core column; and the width of the air gap insulation cavity It gradually decreases from one end close to the symmetry plane of the iron core column group to the other end. When the phase difference of the input current of the two-layer winding coil is controlled, the force on the two-layer structure can be exactly opposite, so as to realize the overall force offset of the iron core reactor; The double-layer active vibration and noise reduction structure design has been completed to achieve vibration and noise reduction and increase the service life of equipment; it has improved the convenience of engineering manufacturing and application; it is suitable for actual industrial applications.

Description

technical field [0001] The invention relates to the field of advanced manufacturing of power transmission and transformation equipment, in particular to a novel iron core reactor considering force compensation. Background technique [0002] Reactor, also known as inductor, plays an important role in power system and is a kind of power equipment that has been widely used. Among them, the series reactor can limit the short-circuit current and fault current in the line, and the shunt reactor can compensate the capacitive reactance of the line, which is applied to the reactive power compensation of the power system in the power grid of various voltage levels, and improves the reactive power operation status of the power system. Therefore, the reactor is an important power equipment in the power system. However, in actual operation, its iron core and winding are jointly affected by magnetostrictive tension, Maxwell stress and Lorentz force, which will produce obvious vibration an...

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Problems solved by technology

[0005] The design of the above-mentioned iron core reactor structure all involves the one-piece casting manufacturing method, which improves the internal structure of the reactor and achieves the goal of reducing vibration and noise, but still uses the traditional structural design, which cannot fundamentally solve the problem of vibration and noise

[0006] That is, the shortcomings of the existing technology: traditional core reactors generally adopt a single-layer symmetrical structure design, taking a three-phase three-column core reactor as an example, that is, in a core column composed of multiple core cakes, each The size of the iron core cake and the width of the reserved air gap insulation are the same, which makes the reactor work, due to the magnetostrictive tension on the electrical steel sheet, the Maxwell stress on the air gap insulation, and the Lorentz stress on the winding coil. The combined action of force can easily cause vibration and uneven force, and aggravate noise radiation

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