CN-224233388-U - Uninterruptible power supply system

CN224233388UCN 224233388 UCN224233388 UCN 224233388UCN-224233388-U

Abstract

The application relates to an uninterruptible power supply system of a power system, which comprises a first power supply cabinet, a second power supply cabinet, an output switch circuit and a feeder cabinet, wherein the output switch circuit comprises a backflow prevention diode module, a first input end of the first power supply cabinet is electrically connected with a first power supply, a second input end of the first power supply cabinet is electrically connected with a second power supply, an output end of the first power supply cabinet is electrically connected with a first input end of the backflow prevention diode module, an input end of the second power supply cabinet is electrically connected with a third power supply, an output end of the second power supply cabinet is electrically connected with a second input end of the backflow prevention diode module, and an output end of the backflow prevention diode module is electrically connected with the feeder cabinet. So set up, uninterrupted power source system can deal with different operating modes, sets up simultaneously and prevents against current diode module, has avoided the harm of electric power backward flow to uninterrupted power source system, has promoted uninterrupted power source system's stability and reliability.

Inventors

Hao Qiangzhou
LI YONG
PENG SHIDE
WEN JIANGHONG
YANG XULIANG
YUAN XUE
YANG PENG

Assignees

中国三峡新能源(集团)股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250421

Claims (10)

1. The uninterruptible power supply system is characterized by comprising a first power supply cabinet, a second power supply cabinet, an output switch circuit and a feeder cabinet, wherein the output switch circuit comprises an anti-backflow diode module; The first input end of the first power supply cabinet is electrically connected with a first power supply, the second input end of the first power supply cabinet is electrically connected with a second power supply, and the output end of the first power supply cabinet is electrically connected with the first input end of the backflow prevention diode module; The input end of the second power supply cabinet is electrically connected with a third power supply, and the output end of the second power supply cabinet is electrically connected with the second input end of the anti-backflow diode module; And the output end of the anti-backflow diode module is electrically connected with the feeder cabinet.
2. The uninterruptible power supply system of claim 1, wherein the output switching circuit further comprises a first switch and a second switch; the output end of the second power supply cabinet is electrically connected with the second input end of the anti-backflow diode module through the first switch, and the output end of the anti-backflow diode module is electrically connected with the feeder cabinet through the second switch.
3. The uninterruptible power supply system of claim 1 or 2, wherein the output switching circuit further comprises a third switch; And the output end of the second power supply cabinet is electrically connected with the feeder cabinet through the third switch.
4. The uninterruptible power supply system of claim 1, wherein the first power supply cabinet comprises a rectifier and an inverter; The input end of the rectifier is electrically connected with the first power supply, the output end of the rectifier is electrically connected with the inverter, and the output end of the inverter is electrically connected with the first input end of the anti-backflow diode module; The second power supply is connected to a connection point between the rectifier and the inverter.
5. The uninterruptible power supply system of claim 4, wherein the first power supply cabinet further comprises a first isolation transformer and/or a second isolation transformer; The input end of the first isolation transformer is connected with the first power supply, and the output end of the first isolation transformer is electrically connected with the input end of the rectifier; The output end of the inverter is electrically connected with the input end of the second isolation transformer, and the output end of the second isolation transformer is electrically connected with the first input end of the anti-backflow diode module.
6. The uninterruptible power supply system of claim 5, wherein the first power supply cabinet further comprises a filter; The input end of the filter is electrically connected with the output end of the first isolation transformer, and the output end of the filter is electrically connected with the input end of the rectifier.
7. The uninterruptible power supply system of claim 5, wherein the first power supply cabinet further comprises a fourth switch and/or a fifth switch; the input end of the first isolation transformer is connected with the first power supply through the fourth switch; the connection point between the rectifier and the inverter is electrically connected to the second power supply through the fifth switch.
8. The uninterruptible power supply system of claim 1, wherein the second power supply cabinet comprises a third isolation transformer; The input end of the third isolation transformer is electrically connected with the third power supply, and the output end of the third isolation transformer is electrically connected with the second input end of the anti-backflow diode module.
9. The uninterruptible power supply system of claim 8, wherein the second power supply cabinet further comprises a sixth switch; The input end of the third isolation transformer is electrically connected with the third power supply through the sixth switch.
10. The uninterruptible power supply system of claim 8, wherein the second power supply cabinet further comprises a voltage regulator; the input end of the voltage regulator is electrically connected with the output end of the third isolation transformer, and the output end of the voltage regulator is electrically connected with the second input end of the backflow prevention diode module.

Description

Uninterruptible power supply system Technical Field The application relates to the technical field of power systems, in particular to an uninterruptible power supply system. Background An uninterruptible power supply system (Uninterruptible Power Supply, UPS) is a device that provides backup power, and is capable of immediately providing power support for connected devices when a primary power source fails, and guaranteeing stable operation and data integrity of critical devices in an unstable power supply or critical task environment. In the related art, the uninterruptible power supply system can only provide short-time power support, is insufficient to cope with long-time power interruption, and has the problem of insufficient reliability. Disclosure of utility model In order to solve the technical problems, the application provides an uninterruptible power supply system. The application provides an uninterruptible power supply system which is characterized by comprising a first power supply cabinet, a second power supply cabinet, an output switch circuit and a feeder cabinet, wherein the output switch circuit comprises an anti-backflow diode module; The first input end of the first power supply cabinet is electrically connected with a first power supply, the second input end of the first power supply cabinet is electrically connected with a second power supply, and the output end of the first power supply cabinet is electrically connected with the first input end of the backflow prevention diode module; The input end of the second power supply cabinet is electrically connected with a third power supply, and the output end of the second power supply cabinet is electrically connected with the second input end of the anti-backflow diode module; And the output end of the anti-backflow diode module is electrically connected with the feeder cabinet. Optionally, the output switching circuit further comprises a first switch and a second switch; the output end of the second power supply cabinet is electrically connected with the second input end of the anti-backflow diode module through the first switch, and the output end of the anti-backflow diode module is electrically connected with the feeder cabinet through the second switch. Optionally, the output switch circuit further comprises a third switch; And the output end of the second power supply cabinet is electrically connected with the feeder cabinet through the third switch. Optionally, the first power supply cabinet includes a rectifier and an inverter; The input end of the rectifier is electrically connected with the first power supply, the output end of the rectifier is electrically connected with the inverter, and the output end of the inverter is electrically connected with the first input end of the anti-backflow diode module; The second power supply is connected to a connection point between the rectifier and the inverter. Optionally, the first power supply cabinet further comprises a first isolation transformer and/or a second isolation transformer; The input end of the first isolation transformer is connected with the first power supply, and the output end of the first isolation transformer is electrically connected with the input end of the rectifier; The output end of the inverter is electrically connected with the input end of the second isolation transformer, and the output end of the second isolation transformer is electrically connected with the first input end of the anti-backflow diode module. Optionally, the first power supply cabinet further comprises a filter; The input end of the filter is electrically connected with the output end of the first isolation transformer, and the output end of the filter is electrically connected with the input end of the rectifier. Optionally, the first power supply cabinet further comprises a fourth switch and/or a fifth switch; the input end of the first isolation transformer is connected with the first power supply through the fourth switch; the connection point between the rectifier and the inverter is electrically connected to the second power supply through the fifth switch. Optionally, the second power supply cabinet includes a third isolation transformer; The input end of the third isolation transformer is electrically connected with the third power supply, and the output end of the third isolation transformer is electrically connected with the second input end of the anti-backflow diode module. Optionally, the second power supply cabinet further comprises a sixth switch; The input end of the third isolation transformer is electrically connected with the third power supply through the sixth switch. Optionally, the second power supply cabinet further comprises a voltage regulator; the input end of the voltage regulator is electrically connected with the output end of the third isolation transformer, and the output end of the voltage regulator is electrically connected with the second input end of the