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Direct-current saturable reactor rapid in reaction

A reactor and reaction technology, which is 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 adjustable response The effect of faster speed, high reliability and simple structure

Inactive Publication Date: 2015-02-25
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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  • Direct-current saturable reactor rapid in reaction
  • Direct-current saturable reactor rapid in reaction
  • Direct-current saturable reactor rapid in reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 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 iron core 23, and a control circuit 24. The iron core 23 of the DC saturated reactor has at least two iron core columns, and each of these two iron core columns can at least form a closed loop that does not pass through the opposite iron core column in the closed-loop iron core. The cross-sectional areas of the two iron core columns are equal. There is an AC coil L9 and a DC coil L10 on one of the iron core columns, and an AC coil L11 and a DC coil L12 on the other iron core column; the number of turns of the AC coil L9 and the AC coil L11 is equal, and the DC coil L10 and the DC coil The number of turns of L12 is equal; the number of turns of the AC coil L9 and the AC coil L11 is K times the number of turns of the primary coil of the transformer of the same v...

Embodiment 2

[0060] 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 iron core 23, and a control circuit 24. The iron core 23 of the DC saturated reactor has at least two iron core columns, and each of these two iron core columns can at least form a closed loop that does not pass through the opposite iron core column in the closed-loop iron core. The cross-sectional areas of the two iron core columns are equal. One of the core columns has AC coil L9(1), AC coil L9(2) and DC coil L10; the other core column has AC coil L11(1), AC coil L11(2) and DC coil L12; AC coil L9(1), AC coil L9(2), AC coil L11(1), AC coil L11(2) have the same number of turns, DC coil L10 and DC coil L12 have the same number of turns; AC coil L9( 1), the number of turns of the AC coil L9(2), the AC coil L11(1), and the AC coil L11(2) is K times the number...

Embodiment 3

[0074] The structure and connection method of the first three-phase DC saturated reactor are as follows: image 3 shown. It includes a three-phase DC saturated reactor core I25, a three-phase DC saturated reactor core II26, and a three-phase control circuit 27. The three-phase DC saturated reactor core I25 and the three-phase DC saturated reactor core II26 each have three iron core columns (A phase iron core column, B phase iron core column, C phase iron core column), three iron core columns There are yokes at both ends so that the three iron core columns form a closed loop of magnetic flux with each other, which is similar to the three-phase transformer core structure. The three-phase DC saturated reactor core I25 is parallel to the three-phase DC saturated reactor core II26. The upper yoke of the double three-column core is connected by three cross yokes, and the lower yoke of the double three-column core is connected by three cross yokes. Phase DC saturated reactor core I...

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Abstract

The invention relates to a direct-current saturable reactor rapid in reaction. The reaction speed of the direct-current saturable reactor is increased through series resistors. The direct-current saturable reactor rapid in reaction comprises a direct-current saturable reactor closed-loop iron core, the closed-loop iron core is provided with at least two iron core columns with the same cross section, the two iron core columns are each provided with an alternating current coil and a direct current coil, the dotted terminals of all the alternating current coils and the direct current coils are connected with a terminal I, remaining terminals of all the alternating current coils are connected with one resistor in series and then connected with a terminal II, the remaining terminal of one direct current coil is connected with a positive thyristor and one resistor in series and then connected with the terminal II, the remaining terminal of another direct current coil is connected with a negative thyristor and one resistor in series and then connected with the terminal II, the control terminals of the thyristors are connected with a control circuit, and the control circuit controls the fire angles of the thyristors so as to continuously adjust the reactance value 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 fast-response 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 saturabl...

Claims

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Application Information

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IPC IPC(8): H01F21/08H01F27/24H01F27/28H01F27/40H02P13/12
Inventor 李晓明
Owner SHANDONG UNIV
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