Centralized and distributed UPS control device, power supply equipment and remote power supply management system
By using the combination of dual power switching switches and DSP controllers in the UPS power supply system, automatic switching and turnback in the event of UPS failure is achieved, and the stability and maintenance cost problems of distributed and centralized UPS power supply methods are solved, ensuring that The system is reliable power supply and rapid fault detection, reducing maintenance costs.
Patent Information
- Application Number
- CN202420854921.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing decentralized and centralized power supply methods of UPS power supply have problems such as poor stability, high maintenance costs, and large scope of failure impact, and lack a solution that can ensure reliable power supply of the system under the premise of lower costs.
Using a centralized and distributed UPS control device, including a dual power switch and two UPS power supplies, the LTS static switch realizes automatic switching to the backup source when the preferred source fails, and automatically switches back when the preferred source returns to normal, combined with DSP control The device detects the working status and sets the communication port for remote monitoring and management.
Effectively prevent equipment shutdown caused by power loss, ensure the system is operating normally under centralized UPS fault conditions, achieve short power switching time, improve equipment stability and machine reliability, and reduce maintenance through remote monitoring and management cost.
Smart Images
Figure CN222169397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of UPS, in particular to a centralized and decentralized UPS control device, power supply equipment and a remote power supply management system. Background Art
[0002] UPS (Uninterruptible Power Supply) is an important external device that can provide continuous, stable and uninterrupted power supply. It can supply power to the control and monitoring devices during the start and stop of the unit and normal operation, as well as the operation and status parameter recording devices of important equipment after an accident. It is called AC uninterruptible power supply, or UPS for short. UPS power supply modes are generally divided into centralized and decentralized power supply modes.
[0003] UPS power supply distributed power supply is a popular configuration mode now. According to the needs of the equipment, suitable UPS power supply can be equipped. For example, for the power protection of a local area network, the server can be equipped with an online UPS power supply, and each node can be equipped with a backup UPS power supply. However, the distributed power supply mode has the following disadvantages: each auxiliary machine needs to be equipped with a separate UPS power supply, and the failure of the UPS power supply board and battery is likely to cause the failure of the auxiliary equipment, so the stability is poor; each system separately proposes a power demand, and the power consumption has not been comprehensively considered, which is easy to waste electricity; the UPS power supply has a large maintenance volume, and the battery life is three years, and the maintenance and management costs are increased. UPS power supply centralized power supply is to use a large-power UPS power supply to load all equipment. If the distance between the equipment is far, it is necessary to lay wires separately. Large data centers and control centers often use this method. However, the centralized power supply mode has the following disadvantages: if the UPS power supply fails, the entire power supply system will be paralyzed; the failure of a system equipment may affect the use of power supply for other systems; the overall wiring difficulty will be greatly increased, and the investment in cable costs will also be greatly increased. Both decentralized and centralized power supply modes have their advantages, but purely centralized power supply modes and purely decentralized power supply modes each have the above-mentioned disadvantages. Therefore, it is necessary to provide a power supply solution that combines centralized and decentralized power supply modes. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the utility model is to provide a centralized decentralized UPS control device, which can ensure reliable power supply to each load of the system under the premise of reducing costs, thereby ensuring the stable operation of each load of the system.
[0005] The second purpose of the utility model is to provide a power supply device.
[0006] The third object of the present utility model is to provide a remote power supply management system.
[0007] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0008] A centralized decentralized UPS control device, comprising:
[0009] At least one dual power switching switch and two UPS power supplies, wherein the two UPS power supplies are respectively connected to at least one of the dual power switching switches, and at least one of the dual power switching switches is connected to a corresponding DC load, the first UPS power supply serves as a preferred source, and the second UPS power supply serves as a backup source, and the dual power switching switch is used to switch the power supply from the preferred source to the backup source when the preferred source fails, and to automatically switch back the power supply when the preferred source returns to normal.
[0010] Preferably, the dual power switching switch is an LTS static switch.
[0011] Preferably, the dual power supply switching switch includes a DSP controller, which is respectively connected to two UPS power supplies and is used to detect the working status of the preferred source so as to switch the UPS power supply according to the working status of the preferred source.
[0012] Preferably, the front and rear surfaces of the dual power switch are respectively provided with a front panel and a rear panel, and each of the front panel and the rear panel is provided with a communication port.
[0013] Preferably, the communication port on the front panel is a USB port for implementing RS232 communication.
[0014] Preferably, the communication port on the rear panel is a SIC card slot for placing a SIC card to implement SNMP networking communication of the dual power switch.
[0015] Preferably, the front panel is provided with a fault indicator light and an indicator light for indicating the working status of the two UPS power supplies.
[0016] Preferably, at least one of the dual power supply switching switches is provided with a branch switch on each of the connection branches with the two UPS power supplies.
[0017] In order to achieve the above-mentioned object, the second aspect of the present invention provides a power supply device, including the above-mentioned centralized decentralized UPS control device.
[0018] To achieve the above-mentioned purpose, the third aspect of the utility model provides a remote power supply management system, including a host computer, a centralized and decentralized UPS control device as described above; or, a power supply device as described above; the host computer is communicatively connected with at least one dual power switching switch in the centralized and decentralized UPS control device or the power supply device, so as to control and monitor at least one of the dual power switching switches.
[0019] The utility model has at least the following technical effects:
[0020] The centralized and decentralized UPS control device provided by the utility model includes at least one dual power switch and two UPS power supplies, wherein the dual power switch is an LTS static switch, which can be used to switch the power supply from the preferred source to the backup source when the preferred source fails, and automatically switch back the power supply when the preferred source returns to normal. The device can avoid the shortcomings of decentralized UPS and centralized UPS power supply, and strengthen the stability of the control power supply of important auxiliary equipment through mutual redundancy, and can effectively prevent the loss of control power supply, which causes the shutdown of important auxiliary equipment and causes the unit to trip, thereby ensuring that the equipment can still work normally under the condition of centralized UPS failure. In addition, the device can make the power switching time of the device reach a typical value of 6ms and a maximum value of 11ms through the above structure, that is, it has a shorter switching time, can meet the time requirements of the control power switching of the auxiliary equipment of the power plant, and can ensure the reliability of load power supply. In addition, the LTS static switch adopts a DSP controller, which can realize full digital control, improve data processing capabilities, and improve the reliability of the whole machine, and through advanced and reliable power failure detection methods, it is convenient to quickly judge power failures. The utility model also provides two communication ports, so that the device has a strong communication function, which can facilitate the remote monitoring and management of the LTS static switch. The SIC card is used for networking communication, which can achieve high-speed network access and realize the network management of each LTS static switch under the local area network. The utility model also provides branch switches on each branch connection branch, which can realize the disconnection and protection of the branch connection branch.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of a centralized decentralized UPS control device according to an embodiment of the utility model.
[0023] Figure 2 The figure is a schematic diagram of the front panel of the dual power switch according to an embodiment of the present utility model.
[0024] Figure 3The figure is a schematic diagram of the rear panel of the dual power switch according to the embodiment of the present utility model. DETAILED DESCRIPTION
[0025] The present embodiment is described in detail below, and examples of the embodiment are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limiting the present utility model.
[0026] A centralized decentralized UPS control device, power supply equipment and remote power supply management system of this embodiment will be described below with reference to the accompanying drawings.
[0027] Figure 1 This is a schematic diagram of the structure of the centralized and decentralized UPS control device of the utility model embodiment. Figure 1 As shown, the centralized decentralized UPS control device includes at least one dual power switch such as dual power switches 1 to 3 and two UPS power supplies, namely a first UPS power supply arranged in UPS A section and a second UPS power supply arranged in UPS B section, wherein the two UPS power supplies are respectively connected to at least one dual power switch, at least one dual power switch is connected to the corresponding DC load, the first UPS power supply serves as the preferred source, and the second UPS power supply serves as the backup source. The dual power switch is used to switch the power supply from the preferred source to the backup source when the preferred source fails, and to automatically switch back the power supply when the preferred source returns to normal.
[0028] like Figure 1 As shown, the two UPS power supplies set in UPS section A and UPS section B are connected to each dual power switch through the incoming line protection switches Q1 and Q2, and each dual power switch is connected to the corresponding DC load, such as dual power switch 1 connected to the primary fan oil station power supply, and dual power switch 2 connected to the fan oil station power supply. When the first UPS power supply as the preferred source fails, the dual power switch can switch the power supply from the preferred source to the backup source, i.e., the second UPS power supply, and when the preferred source returns to normal, the power supply can be automatically switched back.
[0029] It should be noted that the dual power switch is an LTS (single-pole automatic switching device) static switch, which includes a DSP (digital signal processing) controller, which is connected to two UPS power supplies respectively, and is used to detect the working status of the preferred source, so as to switch the UPS power supply according to the working status of the preferred source. In this embodiment, the LTS static switch undertakes the core tasks of detection and switching in the dual-bus power supply system composed of two AC power supplies. It is generally used in high-end uninterruptible power supply fields that require extremely high power supply reliability, such as computer centers, Internet data centers, telecommunications, financial data centers, and industrial process control centers, etc., and can provide stable and high-quality AC power to the equipment.
[0030] In this embodiment, when the preferred source (UPS section A) fails, the LTS static switch automatically switches to the alternative source (UPS section B) for power supply. If the preferred source (UPS section A) returns to normal and lasts for a certain period of time, and the DSP detection process determines that the phase difference between the two sources (UPS section A and UPS section B) is within the set synchronization window range, the LTS static switch will switch back to the preferred source for power supply again to achieve automatic switching back. If the phase difference between the two sources (UPS section A and UPS section B) is not within the set synchronization window range, the LTS static switch will automatically delay until the phase difference between the two sources enters the synchronization window range before performing automatic switching back. In this embodiment, the fast automatic conversion interruption time between the two independent input sources (UPS section A and UPS section B) is a typical value of 6ms and a maximum value of 11ms.
[0031] Specifically, this embodiment uses the UPS power supply and LTS static switch to check and evaluate the important auxiliary machine control power load. Each unit is equipped with an LTS dual power switch cabinet, and all important loads and important auxiliary machine control power loads are connected to the LTS dual power switch cabinet of the unit. The two power supplies in the LTS dual power switch cabinet are respectively taken from the centralized UPS A section and the centralized UPS B section. Each load is switched by the LTS static switch in the independent LTS dual power switch cabinet and output to the important load side.
[0032] by Figure 1For example, the power supply of the primary fan oil station, the power supply of the blower oil station, and the power supply of the condenser pump high-voltage inverter control cabinet are respectively supplied by dual power switch 1 to 3, that is, a single LTS static switch in the LTS dual power switch cabinet, and the centralized UPS section A and the centralized UPS section B provide two power supplies to the LTS dual power switch cabinet. If the preferred source centralized UPS A source is abnormal, and the alternative source centralized UPS B is normal, and the phase difference between the two sources is within the set synchronization window range, the LTS static switch automatically switches to the alternative source for power supply. After the LTS static switch automatically switches to the alternative source for power supply, if the preferred source returns to normal and lasts for a certain period of time, and the phase difference between the two sources is within the set synchronization window range, the LTS static switch will switch back to power supply again to achieve automatic switching back. If the phase difference between the two sources is not within the set synchronization window range, the LTS static switch will automatically delay until the phase difference between the two sources enters the synchronization window range before performing automatic switching back.
[0033] In this embodiment, the above structure adopted by the centralized decentralized UPS control device is relatively simple and practical, and can be used for the control power supply of important auxiliary machines. In this embodiment, the LTS static switch and the centralized UPS power supply are used in combination with each other, and when the UPS power supply fails, the stable operation of the system can be ensured, and the shutdown of the auxiliary equipment of the important system is avoided, thereby causing the unit to trip.
[0034] In one embodiment of the utility model, a branch switch is respectively provided on the connection branches between the dual power switch and the two UPS power supplies. For example, the branch connected to the dual power switch 1 and the UPS power supply of UPS A section is connected with a branch switch 1J1, and the branch connected to the dual power switch 1 and the UPS power supply of UPS B section is connected with a branch switch 2J1. The branch connection can be disconnected and protected by the setting of the branch switch.
[0035] Figure 2 The figure is a schematic diagram of the front panel of the dual power switch according to an embodiment of the present utility model. Figure 3 FIG. 1 is a schematic diagram of the rear panel of the dual power switch of the utility model embodiment. Figure 2 and 3 As shown, the front and rear surfaces of the dual power switch are respectively provided with a front panel and a rear panel, and each of the front panel and the rear panel is provided with a communication port.
[0036] like Figure 2As shown, the communication port on the front panel is a USB (Universal Serial Bus) port, which is used to implement RS232 (serial data communication) communication. For example, when data communication is performed with an external device, this port can be used. In addition, the front panel is also provided with a fault indicator light such as LED (light emitting diode) 5, and indicators for indicating the working status of the two UPS power supplies such as LEDs 1 to 4, and switch buttons such as a switch button and a close button.
[0037] like Figure 3 As shown in the figure, the communication port on the rear panel is a SIC (router intelligent interface) card slot for placing SIC cards, which can realize SNMP (gateway monitoring protocol) networking communication of dual power switch. The rear panel is also provided with source 1 input switch and source 2 input switch, which are respectively used to connect two UPS power supplies. The rear panel is also provided with 8 10A (ampere) output sockets for external loads.
[0038] Specifically, users can connect the communication cables according to actual needs. Among them, the SIC card provides a high-speed network access solution for the LTS static switch. Users can connect the LTS static switch to the local area network through the SIC card to achieve network management, and control and monitor the LTS static switch through the host computer.
[0039] It should be noted that the centralized decentralized UPS control device of this embodiment can be used as a control power supply for important auxiliary equipment in thermal power plants, as well as for important places such as hospitals and data centers.
[0040] Furthermore, the utility model also provides a power supply device, including the above-mentioned centralized decentralized UPS control device.
[0041] Furthermore, the utility model also provides a remote power supply management system, including a host computer, such as the above-mentioned centralized decentralized UPS control device; or, such as the above-mentioned power supply equipment; the host computer is communicatively connected with at least one dual power supply switching switch in the centralized decentralized UPS control device or the power supply equipment so as to control and monitor at least one dual power supply switching switch.
[0042] In this embodiment, the host computer can establish a communication connection with each dual power switching switch, i.e., LTS static switch, in a centralized decentralized UPS control device or power supply equipment, and then control and monitor each LTS static switch, thereby facilitating remote power supply management of the centralized decentralized UPS control device.
[0043] In summary, the centralized and decentralized UPS control device provided by the utility model includes at least one dual power switch and two UPS power supplies, wherein the dual power switch is an LTS static switch, which can be used to switch the power supply from the preferred source to the backup source when the preferred source fails, and automatically switch back the power supply when the preferred source returns to normal. The device can avoid the shortcomings of decentralized UPS and centralized UPS power supply, and strengthen the stability of the control power supply of important auxiliary equipment through mutual redundancy, and can effectively prevent the loss of control power supply, which causes the shutdown of important auxiliary equipment and causes the unit to trip, thereby ensuring that the equipment can still work normally under the condition of centralized UPS failure. In addition, the device can make the power switching time of the device reach a typical value of 6ms and a maximum value of 11ms through the above structure, that is, it has a shorter switching time, which can meet the time requirements of the control power switching of the auxiliary equipment of the power plant, and can ensure the reliability of the load power supply. In addition, the LTS static switch adopts a DSP controller, which can realize full digital control, improve data processing capabilities, and improve the reliability of the whole machine, and through advanced and reliable power failure detection methods, it is convenient to quickly judge the power failure. The utility model also provides two communication ports, so that the device has a strong communication function, which can facilitate the remote monitoring and management of the LTS static switch. The SIC card is used for networking communication, which can achieve high-speed network access and realize the network management of each LTS static switch under the local area network. The utility model also provides branch switches on each branch connection branch, which can realize the disconnection and protection of the branch connection branch.
[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0045] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.
Claims
1. A centralized and decentralized UPS control device, characterized in that: include: At least one dual power switching switch and two UPS power supplies, wherein the two UPS power supplies are respectively connected to at least one of the dual power switching switches, and at least one of the dual power switching switches is connected to a corresponding DC load, the first UPS power supply serves as a preferred source, and the second UPS power supply serves as a backup source, and the dual power switching switch is used to switch the power supply from the preferred source to the backup source when the preferred source fails, and to automatically switch back the power supply when the preferred source returns to normal.
2. The centralized and decentralized UPS control device according to claim 1, characterized in that: The dual power supply switch is an LTS static switch.
3. The centralized and decentralized UPS control device according to claim 2, characterized in that: The dual power supply switch includes a DSP controller, which is connected to two UPS power supplies respectively and is used to detect the working state of the preferred source so as to switch the UPS power supply according to the working state of the preferred source.
4. The centralized and decentralized UPS control device according to claim 2 or 3, characterized in that: The front and rear surfaces of the dual power switch are respectively provided with a front panel and a rear panel, and each of the front panel and the rear panel is provided with a communication port.
5. The centralized and decentralized UPS control device according to claim 4, characterized in that: The communication port on the front panel is a USB port, which is used to implement RS232 communication.
6. The centralized and decentralized UPS control device according to claim 4, characterized in that: The communication port on the rear panel is a SIC card slot for placing a SIC card to implement SNMP networking communication of the dual power switch.
7. The centralized and decentralized UPS control device according to claim 4, characterized in that: The front panel is provided with a fault indicator light and an indicator light for indicating the working status of two UPS power supplies.
8. The centralized and decentralized UPS control device according to claim 1, characterized in that: At least one of the dual power supply switching switches is provided with a branch switch on each of the connection branches with the two UPS power supplies.
9. A power supply device, characterized in that: It comprises a centralized decentralized UPS control device as described in any one of claims 1-8.
10. A remote power supply management system, characterized in that: include: Host computer; A centralized decentralized UPS control device as claimed in any one of claims 1 to 8; Or, the power supply device as claimed in claim 9; The host computer is communicatively connected with the centralized decentralized UPS control device or at least one dual power switch in the power supply equipment so as to control and monitor at least one dual power switch.