Load power distribution method and device and uninterruptible power supply parallel operation redundancy system

A technology of load power and distribution method, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve problems such as limited backup time, and achieve the effects of improving reliability, increasing load power, and reducing load power

Inactive Publication Date: 2021-10-22
INVT POWER SYST SHENZHEN CO LTD
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  • Claims
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Problems solved by technology

[0004] The purpose of this application is to provide a load power distribution method, device and uninterruptible power supply parallel redundant system, aiming to solve the problem of limited backup time of traditional uninterruptible power supply parallel redundant system

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  • Load power distribution method and device and uninterruptible power supply parallel operation redundancy system
  • Load power distribution method and device and uninterruptible power supply parallel operation redundancy system
  • Load power distribution method and device and uninterruptible power supply parallel operation redundancy system

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[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application 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 application, and are not intended to limit the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

[0031] At present, the traditional UPS parallel redundancy system generally ...

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Abstract

The invention provides a load power distribution method which is applied to an uninterruptible power supply parallel operation redundant system. The system comprises a load and a plurality of uninterruptible power supply devices, and the power supply mode of each uninterruptible power supply device comprises a commercial power supply mode and a battery power supply mode. The plurality of uninterruptible power supply devices supply power to the load together. The method comprises the following steps: monitoring power supply modes of a plurality of uninterruptible power supply devices; when it is confirmed that any two uninterruptible power supply devices in the multiple uninterruptible power supply devices are in different power supply modes, increasing the load power borne by the uninterruptible power supply device in the mains supply mode, and reducing the load power borne by the uninterruptible power supply device in the battery power supply mode. The invention further provides a load distribution device and an uninterruptible power supply parallel operation redundancy system, the backup time of the uninterruptible power supply parallel operation redundancy system can be prolonged, and thereby, the reliability of the uninterruptible power supply parallel operation redundancy system is improved.

Description

technical field [0001] The application belongs to the technical field of uninterruptible power supplies, and in particular relates to a method and device for distributing load power and an uninterruptible power supply parallel redundancy system. Background technique [0002] In critical load situations, uninterruptible power supplies are often used in parallel redundant systems. For example, in a typical "1+1" system, in any scenario, the dual power supply of the mains and the battery is used as the input of the two UPSs, and the outputs of the two UPSs always share the load equally. [0003] However, during the power supply process, when one of the uninterruptible power supply equipment is powered off, the uninterruptible power supply equipment is changed to the battery to continue to supply power, and the parallel redundant system is still two uninterruptible power supply equipment. After a certain period of time, the battery current of the uninterruptible power supply de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCH02J9/06H02J9/062H02J9/068
Inventor 刘琴
Owner INVT POWER SYST SHENZHEN CO LTD
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