Power supply fast switching system, switching control method and device

A technology of fast switching and power supply, applied in circuit devices, emergency power supply arrangements, protection against under-voltage or no-voltage, etc. It can solve problems such as poor voltage sag treatment effect, and achieve good treatment effect and cutting speed. quick effect

Active Publication Date: 2020-05-12
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a fast switching system for power supply and a switching control method and device for the problem of poor voltage sag control effect caused by the long switching time of the bypass switch in the traditional technology.

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  • Power supply fast switching system, switching control method and device
  • Power supply fast switching system, switching control method and device
  • Power supply fast switching system, switching control method and device

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Embodiment Construction

[0053] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0054] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "mounted", "one end", "the other end" and similar expressions are used herein for the purpose of description only.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of or...

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Abstract

The invention relates to a power supply fast switching system and a switching control method, wherein, the power supply fast switching system comprises an inverter, a power storage module, a power supply network electric signal detection module, a reactance module, a controller and a bi-directional thyristor module. The electric signal detection module of the power supply network is used for collecting the output electric signal of the power supply network and outputting the output electric signal of the power supply network to the controller. The power storage module is serially connected with the inverter and the reactance module, and then is integrated into the power supply network. The bi-directional thyristor module is used for serially connecting between the power supply network andthe load. The controller is used for controlling the working state of the inverter according to the output electric signal of the power supply network. When voltage sag occurs, the working state of the inverter is controlled so that the inverter outputs a forced shutdown voltage to the bi-directional thyristor module between the power supply network and the load, and the power supply path betweenthe power supply network and the load is quickly cut off by the forced shutdown mode, so that the cutting speed is fast, and the voltage sag treatment effect is good.

Description

technical field [0001] The invention relates to the field of grid voltage sags, in particular to a power supply fast switching system, a switching control method and a device. Background technique [0002] As sensitive users such as modern industries, military departments, communications, computing centers, finance, commerce, and other industries have higher and higher requirements for power quality, once the voltage has a short-term interruption or sag, it will cause major economic losses . The solution to the voltage sag problem is to use a bypass switch connected in series between the power supply terminal and the sensitive user terminal. When the voltage sag occurs, the bypass switch is disconnected to avoid irreversible damage to the sensitive equipment caused by the power supply network. [0003] During the implementation process, the inventor found that the traditional technology has at least the following disadvantages: the switching time of the bypass switch is lon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/24H02J3/28H02J9/06
CPCH02H3/24H02J3/28H02J9/062
Inventor 马智远莫文雄许中周凯王劲王红斌李情张群峰叶志峰
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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