CN111355296A - Complete uninterrupted power supply device - Google Patents
Complete uninterrupted power supply device Download PDFInfo
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- CN111355296A CN111355296A CN202010240477.2A CN202010240477A CN111355296A CN 111355296 A CN111355296 A CN 111355296A CN 202010240477 A CN202010240477 A CN 202010240477A CN 111355296 A CN111355296 A CN 111355296A
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- power supply
- inverter
- ups
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- power
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- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
A complete set of uninterruptible power supply device adopts a redundant structure mode that a UPS power supply and an inverter power supply are connected in parallel and then connected with an AC maintenance power supply in parallel to form a power supply device, the inverter power supply is used as a main loop of the device to supply power to the outside, the UPS power supply is used as a standby loop to supply power to the outside, the UPS power supply and the standby loop realize switching by a quick change-over switch, and the inverter power supply adopts a modular design, a hot plug technology and a redundant technology to ensure the power output of the whole set of device. The number of inverter power supply devices may be two, or may be three or more. The direct current power supply of the inverter power supply is provided for the direct current screen complete set power supply, and a connecting cable from the direct current screen complete set power supply to the inverter power supply is also of a redundant structural formula. The invention has the beneficial effects that: when one inverter power supply stops working, the other inverter power supply can maintain the output supply of the power supply device, the power supply reliability can reach 100%, and the output voltage qualified rate can also reach 100%.
Description
Technical Field
The present invention relates to an uninterruptible power supply device. In particular to a complete set of uninterruptible power supply device.
Background
An uninterruptible power supply (also called UPS power supply) is a voltage-stabilizing and frequency-stabilizing power supply device composed of a rectifier, an inverter, an isolation transformer, a storage battery, and a power distribution unit. At present, the power supply is mainly used for providing stable working power supply for computers, network systems, electrical and instrument control systems of large-scale equipment and the like.
The UPS power supply products at present mainly have the following problems: in an alternating current power supply system, a UPS needs to be connected with an external power supply and an electric load in series, and if the UPS breaks down, the load is instantly powered down; the internal structure of the UPS power supply is divided into links such as rectification, inversion, switching and the like, any element of each link fails, the UPS power supply fails, and the load power failure is caused, and the failures are not easy to detect by conventional technical means; at present, most UPS power supply devices do not have a storage battery management function, and faults caused by storage batteries frequently occur; and (IV) the input and output of the UPS power supply and other external accessory equipment have poor operation reliability.
With the continuous development of precision production, technical requirements of electric equipment on the reliability of a UPS power supply and the like are higher and higher. Therefore, a novel UPS complete device is developed, and the problem of improving the operation reliability and efficiency becomes an urgent need to be solved at present.
Disclosure of Invention
The invention aims to provide a complete UPS power supply device, which has the advantages of more reliable operation, more convenient maintenance, wider application and intellectualization.
In order to solve the technical problems, the invention adopts the following technical scheme:
a complete set of uninterrupted power supply device comprises a UPS power supply and an external alternating current power supply, wherein the UPS power supply and an inverter power supply are connected in parallel to form a power supply device which is formed by an alternating current maintenance power supply after adopting a redundant structure mode that the UPS power supply and the inverter power supply are connected in parallel, the inverter power supply is used as a main loop of the power supply device to supply power to the outside, the UPS power supply is used as a standby loop to supply power to the outside, the UPS power supply and the standby loop realize switching by a quick change-over switch, and the inverter power supply device adopts a modular design, a hot plug technology and a redundancy technology so.
The number of the inverter power modules with the redundancy structure mode can be two, or three or more.
The direct current power supply of the inverter power supply is a direct current screen complete set power supply device, and a connecting cable from the direct current screen complete set power supply to the inverter power supply is also redundant.
The fast switch is an STS switch (static switch).
Compared with the prior art, the invention has the beneficial effects that:
because the inverter power module of the complete UPS power device adopts a redundant structure and a plurality of power modules work simultaneously, when one of the inverter power modules fails or does not work, the other inverter power module can maintain the output capacity of the power device, so the power supply reliability of the complete UPS power device can reach 100 percent, and the output voltage qualification rate can also reach 100 percent.
Drawings
Fig. 1 is a schematic circuit diagram of a complete UPS power supply apparatus of the present invention.
Detailed Description
The specific structure of the UPS power supply apparatus according to the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic circuit diagram of a UPS power supply apparatus according to the present invention. The complete set of uninterruptible power supply device comprises an UPS power supply and an external alternating current power supply. The structure of the power supply device is characterized in that a power supply device is formed by connecting an AC maintenance power supply in parallel after a UPS power supply and an inverter power supply are connected in parallel in a redundant structure mode, the inverter power supply is used as a main loop of the power supply device to supply power to the outside, the UPS power supply is used as a standby loop to supply power to the outside, the UPS power supply and the standby loop realize switching by a quick change-over switch, and the inverter power supply device adopts a modular design, a hot plug technology and a redundant technology so that the power output of the whole device is not influenced when a single module. The number of the inverter power modules in the redundant structure mode can be two, or three or more. The device adopts a redundant structure mode of three inverter power modules. The direct current power supply provided for the inverter power supply is a direct current screen complete set power supply device, and a connecting cable from the direct current screen complete set power supply device to the inverter power supply is also in a redundant structure mode.
Two paths of cables are led out from a closing bus of a direct-current screen power supply device of a substation, namely, two paths of direct-current power supplies (DC220V) are provided for three inverter power supply modules from the same direct-current screen power supply device, so that the reliability of a direct-current power supply is ensured; the inverter power source converts the DC power source into AC 220V power source through the inversion link as the output main loop power source of the power source device, and the UPS power source connected in parallel with the inverter power source in a redundant structure mode is connected in parallel with the backup power source, and the backup power source and the UPS power source are connected with the load through STS (static switch). The whole device is provided with a bypass loop and modules for monitoring, communication and the like. Once the main power supply is failed and the output is stopped, the STS static switch can automatically switch in a undisturbed manner within 2-10mS, and the output of the complete set of power supply device is maintained.
The high-frequency inverter module adopts DSP digital control and high-frequency soft switching technology, carries out N +1 redundancy among a plurality of parallel power supply modules and adopts autonomous current-sharing technology. All the inverter power supply modules have an online hot plug function, and the operation of the whole device is not affected by the fault of a single module. The monitoring system can detect the running data (voltage, current and the like) of the whole device in real time, can collect and control the running state and the real-time data of the power module, can monitor each output switch and alarm, can inquire historical data and fault information, can be connected with other equipment through a MODBUE communication protocol and the like, and can upload data, so that the unattended operation is facilitated. The dc input of the inverter power supply is completely electrically isolated from the ac output. The inversion module adopts a DC/DC-DC/AC link structure, and input direct current is inverted into alternating current through an EMI filter, an LLC full-bridge resonant converter, a half-bridge inverter circuit and the like. The switching part sets a plurality of inverter power supplies as an optimal power supply and a standby power supply, the optimal power supply mode is normally the optimal source power supply mode, and when the optimal source is abnormal, the alternative power supply is normal, and the phase difference between the two power supplies is within the range of a set synchronous window, the alternative power supply is automatically switched to supply power. After the power supply of the alternative source is automatically switched, if the preferred source is recovered to be normal and continues for a certain time, and the phase difference between the two sources is within the range of the set synchronous window, the switching device can be switched back to the preferred source again to supply power.
The complete UPS power supply device is also provided with a normal UPS power supply and a maintenance power supply, so that when the inverter power supplies stop working, the normal UPS power supply is used for continuously supplying power to the power load; or to provide a service power supply for a service activity.
Compared with the prior art, the invention has the beneficial effects that:
because the inverter power module of the complete UPS power device adopts a redundant structure and a plurality of power modules work simultaneously, when one of the inverter power modules fails or does not work, the other inverter power module can maintain the output capacity of the power device, so the power supply reliability of the complete UPS power device can reach 100 percent, and the output voltage qualification rate can also reach 100 percent.
Claims (4)
1. A complete set of uninterrupted power supply device comprises a UPS power supply and an external AC power supply, and is characterized in that a power supply device is formed by connecting an AC maintenance power supply in parallel after adopting a redundant structure mode that the UPS power supply and an inverter power supply are connected in parallel, the inverter power supply is used as a main loop of the power supply device to supply power to the outside, the UPS power supply is used as a standby loop to supply power to the outside, the UPS power supply and the standby loop realize switching by a quick change-over switch, and the inverter power supply device adopts a modular design, a hot plug technology and a redundant technology so as to ensure that the power output of the whole set of device is not.
2. The uninterruptible power supply unit as claimed in claim 1, wherein the number of the inverter power modules having the redundant configuration may be two, three, or more.
3. The uninterruptible power supply unit as claimed in claim 1, wherein the dc power supply of the inverter power supply is a dc panel power supply unit, and the connection cable from the dc panel power supply to the inverter power supply is redundant.
4. The packaged ups device of claim 1, wherein the fast switch is an STS static switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010240477.2A CN111355296A (en) | 2020-03-31 | 2020-03-31 | Complete uninterrupted power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010240477.2A CN111355296A (en) | 2020-03-31 | 2020-03-31 | Complete uninterrupted power supply device |
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| Publication Number | Publication Date |
|---|---|
| CN111355296A true CN111355296A (en) | 2020-06-30 |
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| CN202010240477.2A Pending CN111355296A (en) | 2020-03-31 | 2020-03-31 | Complete uninterrupted power supply device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006246616A (en) * | 2005-03-03 | 2006-09-14 | Nec Corp | Uninterruptible power supply |
| CN104821652A (en) * | 2015-04-17 | 2015-08-05 | 青岛艾迪森科技有限公司 | Industrial power supply ups system |
| CN205811651U (en) * | 2016-06-20 | 2016-12-14 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of switching circuit being beneficial to UPS off-line maintenance |
| CN205945125U (en) * | 2016-07-22 | 2017-02-08 | 比亚迪股份有限公司 | Uninterrupted power source UPS system |
| CN208874352U (en) * | 2018-10-11 | 2019-05-17 | 上海时脉电力设备有限公司 | Centralized multi-purpose cargo ship ups system |
| CN209016786U (en) * | 2018-09-12 | 2019-06-21 | 国家电网有限公司 | A kind of on-Line UPS system based on MMC |
| CN110071573A (en) * | 2019-04-28 | 2019-07-30 | 易事特智能化系统集成有限公司 | A kind of more redundant module ups systems of high frequency and its method of supplying power to |
-
2020
- 2020-03-31 CN CN202010240477.2A patent/CN111355296A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006246616A (en) * | 2005-03-03 | 2006-09-14 | Nec Corp | Uninterruptible power supply |
| CN104821652A (en) * | 2015-04-17 | 2015-08-05 | 青岛艾迪森科技有限公司 | Industrial power supply ups system |
| CN205811651U (en) * | 2016-06-20 | 2016-12-14 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of switching circuit being beneficial to UPS off-line maintenance |
| CN205945125U (en) * | 2016-07-22 | 2017-02-08 | 比亚迪股份有限公司 | Uninterrupted power source UPS system |
| CN209016786U (en) * | 2018-09-12 | 2019-06-21 | 国家电网有限公司 | A kind of on-Line UPS system based on MMC |
| CN208874352U (en) * | 2018-10-11 | 2019-05-17 | 上海时脉电力设备有限公司 | Centralized multi-purpose cargo ship ups system |
| CN110071573A (en) * | 2019-04-28 | 2019-07-30 | 易事特智能化系统集成有限公司 | A kind of more redundant module ups systems of high frequency and its method of supplying power to |
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