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A DC Saturated Reactor

A technology of reactor and direct current, applied in the direction of transformer/inductor core, continuously variable inductor/transformer, transformer/inductor coil/winding/connection, etc., can solve the problem of slow response speed and achieve regulation Accelerated response speed, shortened transient process, and high reliability

Inactive Publication Date: 2017-02-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the existing DC saturable reactor generally has the problem of slow response speed

Method used

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  • A DC Saturated Reactor
  • A DC Saturated Reactor

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Experimental program
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Embodiment 1

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] The structure and connection method of the first DC saturated reactor are as follows: figure 1 shown. It includes a DC saturated reactor terminal I21, a DC saturated reactor terminal II22, a DC saturated reactor closed-loop iron core 23, and a control circuit 24. The closed-loop iron core 23 of the DC saturated reactor has at least two iron core columns; there are two iron core columns with equal cross-sectional areas and both have DC coils and AC coils; each of these two iron core columns can at least form a Closed loop of magnetic flux in the core leg. There are AC coil L5 and DC coil L6 on one of the iron core columns, and there are AC coil L7 and DC coil L8 on the other iron core column; the number of turns of AC coil L5 and AC coil L7 is equal, and the number of turns of DC coil L6 and DC coil The number of turns of L8 is equal; the numbe...

Embodiment 2

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] The structure and connection method of the second DC saturated reactor are as follows: figure 2 shown. It includes a DC saturated reactor terminal I21, a DC saturated reactor terminal II22, a DC saturated reactor closed-loop iron core 23, and a control circuit 24. The closed-loop iron core 23 of the DC saturated reactor has at least two iron core columns; there are two iron core columns with the same cross-sectional area and both having DC coils and AC coils. Closed loop of magnetic flux in the core leg. There are AC coil L5 and DC coil L6 on one of the iron core columns, and there are AC coil L7 and DC coil L8 on the other iron core column; the number of turns of AC coil L5 and AC coil L7 is equal, and the number of turns of DC coil L6 and DC coil The number of turns of L8 is equal; the number of turns of AC coil L5 and AC coil L7 is 1 / 2 of ...

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PUM

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Abstract

The invention relates to a direct current saturable reactor of which the reaction speed is quickened through serial resistors. The direct current saturable reactor comprises a direct current saturable reactor closed-loop core, wherein the direct current saturable reactor closed-loop core comprises at least two core limbs which has equal cross area and each of which is provided with a direct current coil and an alternating current coil; each core limb at least can form a closed flux loop which does not pass by the counterpart core limb; the dotted terminal of the alternating current coil of one core limb is connected with a terminal I, and the un-dotted terminal of the direct current coil of one core limb is connected with a terminal II; the coils of the other core limb are opposite; a thyristor and a pair of resistors are serially connected between remaining terminals of the alternating current coil and the direct current coil of the same core limb; control ends of the thyristors are connected with a control circuit; nodes of the resistors are in direct short-circuit connection; the turns of the direct current coils are the same; the turns of the alternating current coils are the same; the turns of the direct current coils are different from the turns of the alternating current coils; the control circuit controls triggering angles of the thyristors so as to achieve continuous adjustment of the reactance of the direct current saturable reactor.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation in power systems, in particular to a DC saturated reactor. Background technique [0002] Reactors are widely used in power systems. The series reactor can limit the short-circuit current; the shunt reactor can limit the overvoltage; the combination of the reactor and the capacitor can form a filter circuit. In some application fields, the reactance value of the reactor is fixed; in some application fields, the reactance value of the reactor should be adjusted continuously with the change of the power system operation mode. The controllable saturable reactor (abbreviated as: saturable reactor) whose reactance value can be adjusted continuously is an important research topic. [0003] The saturable reactor uses the saturation characteristics of the closed-loop iron core of the saturable reactor to change the reactance value of the reactor. Many saturable reactors hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F21/02H01F27/24H01F27/28H01F27/40H02P13/00
Inventor 李晓明
Owner SHANDONG UNIV