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Operating power supply system and power electronic transformer system

A technology for operating power supplies and transformers, which is applied in the direction of emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problems of large influence, affecting the stability of auxiliary power supply, and the stability of DC operating power supply bus voltage, so as to improve reliability and The effect of stability

Active Publication Date: 2021-03-02
东莞南方半导体科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (3) The external input of mains power has a great impact on the entire PET system
[0007] (4) The output of the input city power after power frequency isolation and rectification and the output of the UPS are both supplied to the DC operating power bus. According to the interactive mode, the voltage of the DC operating power bus is maintained through the diode switching circuit, which has a certain influence on the stability of the DC operating power bus voltage. influence, and will also affect the stability of subsequent auxiliary power supplies

Method used

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  • Operating power supply system and power electronic transformer system
  • Operating power supply system and power electronic transformer system
  • Operating power supply system and power electronic transformer system

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In one embodiment, an operating power system 20 is provided, such as figure 2 As shown, the operating power system 20 includes a battery pack 210 , a power control unit 220 , a bus converter 230 , a startup protection control power circuit 240 and one or more auxiliary power sources 250 . Wherein the power control unit 220 is connected to the battery pack 210 and the bus converter 230, and is used to supply power for the bus converter 230 according to the electric energy output by the battery pack 210; the bus converter 230 is connected to the startup protection The control power supply ci...

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Abstract

The invention relates to an operating power supply system and a power electronic transformer system comprising the operating power supply system. The operation power supply system comprises a batterypack, an electric energy control unit, a bus converter, a starting protection control power supply circuit and at least one auxiliary power supply. The electric energy control unit is connected with the battery pack and the bus converter and used for supplying power to the bus converter according to electric energy outputted by the battery pack; the bus converter is connected with the starting protection control power supply circuit and a direct-current operating power supply bus and is used for supplying power to each auxiliary power supply circuit; the starting protection control power supply circuit is used for connecting external equipment and providing a starting control power supply and a protection control power supply for the external equipment according to the starting protectioncontrol signal; at least one auxiliary power supply is used for connecting the external equipment and providing a working power supply for the external equipment according to the direct-current operating power supply bus voltage. The fixed battery pack is adopted to realize a self-starting power supply function, the interference of commercial power is removed, and the reliability of the system canbe effectively improved.

Description

technical field [0001] The invention relates to the technical field of power conversion, in particular to an operating power supply system and a power electronic transformer system including the operating power supply system. Background technique [0002] The operational power supply system is a highly reliable power supply system, usually used as an auxiliary power supply system for secondary equipment in the power system, such as the auxiliary power supply for power electronic transformers (Power Electronic Transformers, PET) that can be applied in smart grids. With the continuous development and construction of the power system, the requirements for the reliability, power capacity and voltage isolation performance of the operating power system are getting higher and higher. [0003] Such as figure 1 Shown is a common operating power supply system, which includes two parts, the first part is the "startup operating power supply" powered by UPS (Uninterrupted Power Supply, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/062
Inventor 张胜发徐海波李锡光阳志超
Owner 东莞南方半导体科技有限公司
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