External electric supply controllable reactor

A technology of external power supply and reactor, applied in the direction of inductors, variable inductors, variable transformers, etc., can solve problems such as inability to apply high-voltage products and high-voltage power grids, and achieve suppression of system overvoltage and submerged power supply. flow, improve reliability and safety, eliminate the effects of self-excitation

Active Publication Date: 2007-03-21
TBEA SHENYANG TRANSFORMER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The research on controllable reactors began in the 1950s, and various types of controllable reactors, such as turn-adjusting type, air-gap adjusting type, high-impedance transformer type, and phase-controlled type, have appeared successively. To a certain effect, but most of them cannot be applied to the high-voltage power grid
In order to solve this problem, the magnetically controlled reactors currently being studied often adopt a structure with a small cross-section on the core column, and the coil has a tap. In practice, it is felt that the reactor with this structure cannot be applied to high-voltage products.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0040] As shown in Figure 2, it is a three-phase system composed of three single-phase reactors, and the grid side winding in each phase is two sets of coils H 12 、H 13 The group is in parallel structure, and each phase of the control winding has K 14 、K15 Two coils, one group of coils with the same name between phases and phases are connected end to end to form a series branch, and the two branches are then connected in parallel, and the two parallel terminals a and b are respectively connected to the output terminals of the rectification and filtering device. Grid side winding H after three-phase Y connection 12 、H 13 One end is respectively connected to the three-phase transmission line, the other end is connected to a small reactor, and the other end of the small reactor is grounded. The rectifying and filtering device 2 is connected to an external AC power supply, the output terminals of the rectifying and filtering device are connected to terminals a and b of the cont...

Embodiment 2

[0042] As shown in Figure 4, it is a three-phase system composed of three single-phase reactors, each phase of the grid side winding H 12 、H 13 Two coils are connected in series, each phase control winding has two coils K 14 、K 15 A group of coils with the same name between phases and phases are connected end to end to form a series branch, and the two branches are then connected in parallel, and the two parallel terminals a and b are respectively connected to the output terminals of the rectifier and filter device. One end of the three-phase Y-connected grid-side winding is respectively connected to the three-phase transmission line, the other end is connected to a small reactor, and the other end of the small reactor is grounded. The rectifying and filtering device 2 is connected to an external AC power supply, and the thyristor group in the rectifying and filtering device is connected to the control unit 4 . The detection device 3 for detecting power parameters is connec...

Embodiment 3

[0044] As shown in Figure 6, it is a three-phase system composed of three single-phase reactors, and the grid side winding H of each phase 16 Single-coil structure is adopted, and each phase winding of the control winding has two coils K 14 、K 15 A group of coils with the same name between phases and phases are connected end to end to form a series branch, and the two branches are then connected in parallel, and the two parallel terminals a and b are respectively connected to the output terminals of the rectifier and filter device. One end of the three-phase Y-connected grid-side winding is respectively connected to the three-phase transmission line, the other end is connected to a small reactor, and the other end of the small reactor is grounded. The rectifying and filtering device 2 is connected to an external AC power supply, and the thyristor group in the rectifying and filtering device is connected to the control unit 4 . The detection device 3 for detecting power param...

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PUM

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Abstract

A controllable reactor with outside electrical source has main body and is made up by oil box, magnetic core pole inside of it, left and right side magnet yokes, up and down magnet yokes, winding of magnetic core pole and all kinds of sensor for detecting all species of parameters. It relates to rectifying and filtering equipment, detecting equipment for detecting electrical network parameter and control unit. The net-side winding, compensate winding and control winding set on the magnetic core pole from outside to inside. Net-side winding connects with transmit electricity circuitry, rectifying and filtering equipment connects with outside alternating current source, one end of control winding connects with input end of rectifying and filtering equipment, its output end connects with the other end of control winding to make up of feedback loops. The control unit joints with end boxes to main body connecting with all kinds of sensor signal, rectifying and filtering equipment and detecting equipment. Detecting equipment connects with transmit electricity circuitry and changes reactance value and capability of reactor by changing saturation and magnetic ratio of iron core.

Description

technical field [0001] The invention relates to a reactor, in particular to a reactor which utilizes an external power source to realize controllable reactance value and capacity. Background technique [0002] The research on controllable reactors began in the 1950s, and various types of controllable reactors, such as turn-adjusting type, air-gap adjusting type, high-impedance transformer type, and phase-controlled type, have appeared successively. To a certain effect, but most of them cannot be applied to high-voltage power grids. In order to solve this problem, the magnetically controlled reactors currently being studied often adopt a structure with a small cross-section on the core column, and the coil has a tap. In practice, it is felt that the reactor with this structure cannot be applied to high-voltage products. . Contents of the invention [0003] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a controllable r...

Claims

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Application Information

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IPC IPC(8): H01F29/00H01F27/24H01F27/28H02P13/00
Inventor 安振赵静
Owner TBEA SHENYANG TRANSFORMER GRP CO LTD
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