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Three-phase five-column arc extinction electric reactor

A technology of three-phase five-column and reactor, which is applied in the direction of inductors, variable inductors, transformer/inductor cores, etc., can solve problems such as complexity, unbalanced three-phase arc suppression, and many devices, and achieve reliable Accurate linearity, high smoothness and low magnetic permeability

Active Publication Date: 2013-09-18
JIANGSU HONGAN TRANSFORMER
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Problems solved by technology

[0005] When a single-phase arc suppression reactor is used in a three-phase power system, the arc suppression reactor device can only be added to each phase, which has certain defects in the use process, too many and complicated devices, and may also bring three Unbalance problem of canceling arc

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Embodiment Construction

[0015] In conjunction with accompanying drawing and embodiment, be specifically described as follows:

[0016] Said invention is used in a three-phase power system comprising five core legs. The iron core is made of amorphous alloy with air gap for the first time. The end surface of the air gap is smooth and high-precision, which can effectively reduce the noise caused by the adjustable air gap; the three columns in the middle of the iron core are connected in a star shape for the main winding, and the neutral point is directly grounded. It is similar to a grounding transformer; the columns on both sides have air gaps, and the columns on both sides and the middle column form a zero-sequence magnetic path; the columns on both sides are wound with coils and have three inductive loads with different reactances; the reactors L1 and L2 respectively pass through two The contactor is turned on and off to realize the coarse adjustment of the compensation current. The reactor L3 is mad...

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Abstract

The invention discloses a three-phase five-column arc extinction electric reactor which belongs to the technical field of transformer design and manufacture. The three-phase five-column arc extinction electric reactor realizes the integral function of ground connection and arc extinction. An amorphous alloy with an air gap is first adopted for an iron core, and the end surface of the air gap has high smooth accuracy, so the noise caused by the adjustable air gap is effectively reduced; three main windings in the middle of the iron core are in star connection, a neutral-point is directly connected to ground, the columns on two sides are provided with air gaps and form a zero sequence magnetic access with the middle column; coils are wound on the columns on two sides, and three inductive loads with different reactive resistance are provided for the columns on the two sides to realize the rough adjustment and fine adjustment of a compensating current. The advantages of high magnetic permeability and low energy consumption of the amorphous alloy are fully utilized to overcome the defects caused by direct current excitation for a long time that the system is easy to become overheated, the active loss is large, the wave distortion of the compensating current is large, and the residue is large after compensation. The three-phase five-column arc extinction electric reactor is mainly used in high-voltage and intermediate-voltage electric power systems.

Description

technical field [0001] The invention relates to a three-phase five-column arc-suppression reactor, which belongs to the technical field of transformer design and manufacture. Background technique [0002] When a conductor is energized, it usually generates a magnetic field in a certain space it occupies. In the most popular terms, something that can act as an impedance in a circuit is called a reactor. However, the inductance of the energized long straight conductor is small, and the magnetic field generated is not strong, so the actual reactor is in the form of a solenoid wound with wires, which is called an air-core reactor; sometimes in order to make the solenoid have a larger inductance, The iron core is inserted into the solenoid, which is called iron core reactor. [0003] Due to the use of reactors, when a short circuit occurs, the voltage drop on the reactor is relatively large, so it also plays a role in maintaining the voltage level of the busbar, so that the volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F3/14H01F27/30H01F29/00
Inventor 李杰徐锡舟洪振兴
Owner JIANGSU HONGAN TRANSFORMER
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