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Scott wiring transformer-based non-three-phase-to-three-phase conversion power supply structure

A transformer and non-three-phase technology, which is applied in the field of non-three-phase to three-phase power supply construction, can solve the problems of three-phase power supply users obtaining three-phase power supply, and achieve the effect of simple structure, good versatility and easy implementation

Pending Publication Date: 2020-01-10
CHENGDU SHANGHUA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that users in non-three-phase transmission line areas and users who cannot obtain three-phase power supply due to three-phase transmission line failure can obtain three-phase power supply in a relatively short period of time on the basis of satisfying economy, safety and timeliness, this paper Invention adopts technical scheme as follows:

Method used

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  • Scott wiring transformer-based non-three-phase-to-three-phase conversion power supply structure
  • Scott wiring transformer-based non-three-phase-to-three-phase conversion power supply structure
  • Scott wiring transformer-based non-three-phase-to-three-phase conversion power supply structure

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Embodiment 1

[0032] Such as figure 1As shown, the embodiment of the present invention provides a non-three-phase to three-phase power supply structure based on a Scott connection transformer. The power supply structure mainly includes a transmission line 1 , a Scott connection transformer 2 and a power converter 3 . The transmission line 1 is used to carry out current transmission to the Scott connection transformer 2 and the power converter 3; the Scott connection transformer 2 is used to transform and convert the current provided by the power transmission line 1 and the power converter 3 After phase adjustment, a symmetrical three-phase power supply is provided to the user; the power converter 3 is used to transform the shunted current in the transmission line 1 and then supply power to the Scott connection transformer 2; wherein the transmission line 1 is respectively connected to the power conversion The switch 3 is connected to the Scott connection transformer 2, the power converter 3...

Embodiment 2

[0039] The non-three-phase to three-phase power supply structure based on the Scott connection transformer described in the embodiment of the present invention is the same as the basic structure of the first embodiment of the present invention, that is, figure 1 As shown, the power supply structure mainly includes a transmission line 1 , a Scott connection transformer 2 and a power converter 3 . The transmission line 1 is used to carry out current transmission to the Scott connection transformer 2 and the power converter 3; the Scott connection transformer 2 is used to transform and convert the current provided by the power transmission line 1 and the power converter 3 After phase adjustment, a symmetrical three-phase power supply is provided to the user; the power converter 3 is used to transform the shunted current in the transmission line 1 and then supply power to the Scott connection transformer 2; wherein the transmission line 1 is respectively connected to the power conv...

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Abstract

The invention discloses a Scott wiring transformer-based non-three-phase-to-three-phase conversion power supply structure. The structure comprises a power transmission line, a three-phase static var generator and a Scott transformer; the input ends of the Scott transformer are respectively connected with the output end of the three-phase static var generator and the power transmission line; the input end of the three-phase static var generator is connected with the power transmission line; and the three-phase port of the Scott transformer serves as an output port to provide a three-phase powersource for a user. With the structure of the invention adopted, a single-phase wire and a two-phase power transmission line can provide a three-phase power source for a user. The structure can be widely applied to power distribution system transformation and fault repair.

Description

technical field [0001] The invention relates to the technical field of power distribution. In particular, it relates to a non-three-phase to three-phase power supply structure based on a Scott connection transformer. Background technique [0002] In the AC power supply mode of the power system, the three-phase AC power supply system is widely used. In the field of low-voltage power distribution in my country, single-phase transmission lines are generally used to provide users with electrical energy. In some areas, users are geographically dispersed, and two-phase transmission lines are also used to provide electrical energy to users. When users who only access single-phase or two-phase transmission lines need to use three-phase power supply, according to the existing technology, only three-phase transmission lines can be re-erected to provide users with three-phase power supply, which takes a long time, high cost and low economy . [0003] At the same time, because the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/18H02M5/14H02M5/458
CPCH02J3/00H02J3/1842H02M5/14H02M5/4585Y02E40/30
Inventor 吴波易东张伟鹏魏莎莎
Owner CHENGDU SHANGHUA ELECTRIC CO LTD
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