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Device for improving performance of direct-current saturable reactor and method of device

A reactor and performance technology, which is applied in the field of devices to improve the performance of DC saturated reactors, can solve problems such as slow response speed, and achieve the effects of fast adjustment of response speed, improvement of response speed, and flexible control

Inactive Publication Date: 2014-10-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The response speed of the existing DC saturated reactor is slow

Method used

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  • Device for improving performance of direct-current saturable reactor and method of device
  • Device for improving performance of direct-current saturable reactor and method of device
  • Device for improving performance of direct-current saturable reactor and method of device

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0053] The structure and connection method of the first single-phase DC saturated reactor with controllable resistance are as follows: figure 1 shown. It includes a single-phase DC saturated reactor I, a controllable resistor M1, a controllable resistor M2, and a control circuit I24. The single-phase DC saturated reactor I includes a single-phase DC saturated reactor terminal I21, a single-phase DC saturated reactor terminal II22, a single-phase DC saturated reactor closed-loop iron core 23, and a control circuit I24. The closed-loop iron core 23 of the single-phase DC saturated reactor has at least two iron core columns; there are two iron core columns with the same cross-sectional area, and both have DC coils and AC coils; Closed loop of magnetic flux passing through opposing core legs. There is an AC coil L5 and a DC coil L6 on one of the core col...

Embodiment 2

[0074] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0075] The structure and connection method of the second type of single-phase DC saturated reactor with controllable resistance is as follows: image 3 shown. Including single-phase DC saturated reactor II, controllable resistor M1, and control circuit I24. The single-phase DC saturated reactor II includes a single-phase DC saturated reactor terminal I21, a single-phase DC saturated reactor terminal II22, a single-phase DC saturated reactor closed-loop iron core 23, and a control circuit I24. The closed-loop iron core 23 of the single-phase DC saturated reactor has at least two iron core columns; there are two iron core columns with the same cross-sectional area and both DC coils and AC coils. Closed loop of magnetic flux passing through opposing core legs. There is an AC coil L5 and a DC coil L6 on one of the core columns, and an AC coil terminal L7...

Embodiment 3

[0088] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0089] The structure and connection method of the third type of single-phase DC saturated reactor installed with controllable resistance is as follows: Figure 4 shown. Including single-phase DC saturated reactor III, controllable resistor M3, controllable resistor M4, control circuit III26. The single-phase DC saturated reactor III includes a single-phase DC saturated reactor terminal I21, a single-phase DC saturated reactor terminal II22, a single-phase DC saturated reactor closed-loop iron core 23, and a control circuit III26. The closed-loop iron core 23 of the single-phase DC saturated reactor has at least two iron core columns; there are two iron core columns with the same cross-sectional area and both DC coils and AC coils. Closed loop of magnetic flux passing through opposing core legs. There is an AC coil L9 and a DC coil L10 on one of the i...

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PUM

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Abstract

The invention relates to a device for improving performance of a direct-current saturable reactor and a method of the device. Controllable resistors are used for enabling the adjustment response speed of the direct-current saturable reactor to be increased. The device comprises the direct-current saturable reactor, controllable resistors M1 and M2 and a control circuit, wherein the dotted terminal of a coil L5 and the dotted terminal of a coil L8 are connected with a terminal I; the different-polarity terminal of a coil L7 and the different-polarity terminal of a coil L6 are connected with a terminal II; the different-polarity terminal of the coil L5 is sequentially connected in series with the controllable resistors M1 and M2 and then is connected with the dotted terminal of the coil L7; a node between the controllable resistors M1 and M2 is connected with the dotted terminal of the coil L6 through a positive thyristor D3, and is further connected with the different-polarity terminal of the coil L8 through a positive thyristor D4; the triggering terminals of the thyristor D3 and the thyristor D4 are connected with the control circuit; the control circuit controls the trigger angles of the thyristors, so as to continuously adjust the reactance value of the direct-current saturable reactor; the control terminals of the controllable resistors M1 and M2 are connected with the control circuit.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation in power systems, in particular to a device and method for improving the performance of 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 reactan...

Claims

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Application Information

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IPC IPC(8): H01F21/02H01F27/28H02P13/00
Inventor 李晓明
Owner SHANDONG UNIV
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