A power quality control device

A power quality and circuit technology, applied in the field of power quality control devices, can solve the problems of no regional, large-scale medium-voltage and large-capacity power quality comprehensive control devices, and small DVR capacity.

Active Publication Date: 2021-07-20
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing DVRs are mainly aimed at certain terminal points such as sensitive users on the grid side. Domestic DVR products have a small capacity and are used for low-voltage levels. There is no comprehensive management of regional and large-scale medium-voltage and large-capacity power quality. device

Method used

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] see figure 1 , is a schematic structural diagram of a power quality control device provided by an embodiment of the present invention, the power quality control device includes a substation power supply circuit 1, a backup power supply circuit 2, a step-down transformer 3, and a measurement and control module 4; the power quality control The device has a power input terminal V1 and a power output terminal V2 for connecting with a substation; the input termin...

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Abstract

The invention discloses a power quality control device, which includes a substation power circuit, a backup power circuit, a step-down transformer and a measurement and control module; the power quality control device has a power input terminal and a power output terminal for connecting with a substation; The input end is connected to the power input end; the input end of the substation power supply circuit is connected to the first output end of the measurement and control module, the output end of the substation power supply circuit is connected to the input end of the measurement and control module, and the input end of the backup power supply circuit is connected to the second output end of the measurement and control module. The output terminal is electrically connected, and the output terminal of the substation power supply circuit and the output terminal of the backup power supply circuit are connected to the high voltage side of the step-down transformer; Power quality provides an effective comprehensive management device, which can effectively reduce the operating loss of the device and has a fast response speed.

Description

technical field [0001] The invention relates to the technical field of power quality control, in particular to a power quality control device. Background technique [0002] With the large-scale development of the industrial economy, more and more large-capacity, high-precision industrial products are used, and their requirements for power grid applications are also getting higher and higher. People pay more and more attention to the power quality problem. The most direct problem caused by the power quality problem is that the normal industrial production is destroyed, which in turn brings huge economic losses. For example: for sensitive users (such as semiconductor manufacturing companies), a voltage sag of tens of milliseconds may cause equipment damage, production line shutdown, and huge economic losses. Now is the golden age of rapid development of my country's industrial economy, power quality is related to the development level and competitiveness of products in the en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/062Y02B70/30Y04S20/20
Inventor 邹林
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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