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Circuit for smoothly switching power supplies

A technology of smooth switching and power supply, applied in circuit devices, emergency power supply arrangements, electrical components, etc., and can solve problems such as sudden load and power failure

Active Publication Date: 2017-08-01
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a circuit for smoothly switching power supplies, so as to solve the problems of sudden changes in voltage and current and short-term power outages of loads in the circuit switching process in the related art

Method used

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  • Circuit for smoothly switching power supplies
  • Circuit for smoothly switching power supplies
  • Circuit for smoothly switching power supplies

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0024] It should be noted that the terms "first" and "second" in ...

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Abstract

The invention discloses a circuit capable of smoothly switching a power supply. The circuit capable of smoothly switching the power supply comprises a first load, a first power supply, a second power supply and a power supply switching component, wherein the first power supply is used as a power supply of the first load; the second power supply is used as a first standby power supply of the first power supply; the power supply switching component is connected between the first power supply and the first load and is connected between the second power supply and the first load, wherein the first power supply and the first load are under an on state, the second power supply and the first load are under an off state, the power supply switching component is used for controlling the first power supply and the first load to be switched into the off state from the on state, and the second power supply and the first load are switched into the on state from the off state. According to the circuit, the problems of voltage and current break and load short-time outage generated in a power supply switching process in the relevant technology are solved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a circuit for smoothly switching power supplies. Background technique [0002] In the operation of the power grid, load adjustment and redistribution are often performed, and at this time, switching (switching) operations are required. Load switching is required when the power load distribution is unbalanced, such as unbalanced low-voltage three-phase loads and unbalanced loads between transformers. An effective way to solve the unbalance problem is to cut the load. When solving the three-phase unbalance, cut the three-phase load to make it tend to balance. When solving the uneven load of different transformers, adjust the loads of different transformers to balance each other. [0003] At present, a switching method is "cold" switching, that is, first disconnecting the power supply of the load with a switch, and then supplying power to the load with a new power source. This switchi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCY02B70/30Y04S20/20
Inventor 张淼郝良张艳妍陈光华李洪涛赵贺饶强
Owner STATE GRID CORP OF CHINA
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