Crossed iron core type controlled reactor

Abstract

The invention discloses a crossed iron core type controlled reactor, which comprises a main iron core and a control iron core, wherein an alternating current winding is wound on an alternating current post of the main iron core, a direct current winding is wound on a direct current post of the control iron core, and the main iron core and the control iron core share a partial iron core post, so the magnetic flux generated by the direct current winding controls the saturation degree of the partial main iron core, and the magnetic flux generated by the alternating current winding is not linked with the direct current winding, or only partial magnetic flux generated by the alternating current winding is linked with the direct current winding. The crossed iron core type controlled reactor has the advantages that the impedance change speed of the alternating current winding is high, the power consumption is lower, and no mutual induction exists between the alternating current winding and the direct current winding.

Description

technical field [0001] The invention belongs to the manufacturing technology of high-voltage equipment, and in particular relates to a core-type controllable reactor, which is mainly used in the field of reactor manufacturing. Background technique [0002] With the construction and development of ultra-high voltage and long-distance power grids, the charging capacity of the line to the ground has increased significantly. As a result, the voltage at the receiving end has risen due to the excessive leading reactive power at light load and no load; the leading current has increased power loss. Large and cut off the load to produce power frequency overvoltage and other consequences. Therefore, it is necessary to install a phase modulation device with a lagging component on the system to compensate for the charging capacity. The shunt reactor has the function of absorbing the leading reactive power and limiting the operating overvoltage in the ultra-high voltage system. Moreove...

AI Technical Summary

Problems solved by technology

The adjustment speed of this adjustment method is much higher than the adjustment method of changing the gap, and there is no mechanical transmission mechanism, so the reliability is high. However, with the increase of the grid voltage level, this adjustment method not only exposes the problem of high power consumption, but also Due to the need for strong DC excitation, it is difficult to solve the induced high voltage problem caused by the AC current in the working winding in the control winding, which restricts its development

[0004] At present, the most widely used controllable reactor is the magnetic valve core controllable reactor, but this kind of equipment only has mature products in the middle voltage level, and has not been widely used in the high voltage level.

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