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A Two-Branch Symmetrical Split Reactor

A split reactor, symmetrical technology, applied in the direction of inductors, fixed inductors, transformer/inductor coils/windings/connections, etc., can solve problems such as limiting short-circuit current increase, reducing coil coupling, and reducing voltage drop, etc. Achieve the effect of reducing voltage drop, good fault current and small reactance

Active Publication Date: 2019-03-01
TSINGHUA UNIV +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a short-circuit fault occurs in a branch connected to a coil and the current of the branch increases, the reactance of the branch increases due to the current imbalance of the two coils, limiting the increase of the short-circuit current
[0005] However, due to the distance between the upper coil 1 and the lower coil 2 of the two coils, the coupling between the coils is small, so that the coupling degree of the two coils is reduced, and the ability to reduce the voltage drop is limited.

Method used

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  • A Two-Branch Symmetrical Split Reactor
  • A Two-Branch Symmetrical Split Reactor
  • A Two-Branch Symmetrical Split Reactor

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as image 3 , Figure 4 As shown, the present invention provides a two-branch symmetrical split reactor, which includes an upper outer coil 11, an upper inner coil 12, a lower outer coil 13, a lower inner coil 14, an upper outer coil lead wire 15, and an upper inner coil lead wire 16 , the lower outer coil lead wire 17, the lower inner coil lead wire 18, the first intermediate lead wire 19 and the second intermediate lead wire 20; wherein the first intermediate lead wire 19 is used to connect the upper outer coil 11 and the lower inner coil 14, and the second intermediate lead wire 20 It is used to connect the lower outer coil 13 and the upper inner coil 12 .

[0026] The first branch of the split reactor is composed of the upper outer coil lead wire 15 , the upper outer coil 11 , the first middle lead wire 19 , the lower inner coil 14 a...

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Abstract

The invention relates to a split reactor with two symmetric branches. A first branch of the split reactor is formed by sequentially connecting an upper external coil lead, an upper external coil, a first intermediate lead, a lower internal coil and a lower internal coil lead in series, a second branch of the split reactor is formed by sequentially connecting an upper internal coil lead, an upper internal coil, a second intermediate lead, a lower external coil and a lower external coil lead in series, and the first branch and the second branch of the split reactor are symmetric in structure; and when a circuit is connected, the upper external coil lead and the upper internal coil lead are connected, the lower external coil lead and the lower internal coil lead are respectively connected with different branches, or the lower external coil lead and the lower internal coil lead are respectively connected with different circuit components and are then are connected in parallel with the same circuit. The split reactor is high in coupling degree, the voltage is reduced during normal running, the reactance is large when a fault occurs, and an effect of effectively limiting a short-circuit current is achieved.

Description

technical field [0001] The invention relates to a split reactor, in particular to a split reactor with two symmetrical branches. Background technique [0002] Split reactors are generally hollow or inductive coils without magnetic materials, which are used to limit the short-circuit current when a short-circuit fault occurs in the power system circuit, and reduce the short-circuit current of the line to the breaking capacity of the circuit breaker. Compared with ordinary reactors, split reactors also have the advantages of small reactance and lower line voltage during normal operation. Therefore, it is widely used in power distribution system. [0003] Split reactors are also used in superconducting current limiters, and together with superconducting wires, they can limit the short-circuit current. At this time, it is also necessary to reduce the reactance in normal operation and increase the reactance in fault state, so the coupling degree between the two branches of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F37/00H01F27/28H01F27/30
CPCH01F27/2828H01F27/306H01F37/00
Inventor 蒋胜千王善铭洪剑锋孙旭东刘均菲王健李洪波薛雷诸嘉慧丘明陈盼盼刘芮彤范维
Owner TSINGHUA UNIV
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