Uninterruptible power supply fault monitoring device
By designing the uninterruptible power supply fault monitoring device and utilizing the circuit structure of the normally open point and the relay, the function of obtaining fault information in time when the uninterruptible power supply fails is realized, and the problem of obtaining fault information in new energy box-type transformers is solved.
Patent Information
- Application Number
- CN202323418141.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-13
AI Technical Summary
In the new energy box transformer, when the uninterruptible power supply fails, how to obtain fault information in time to ensure the normal operation of the box transformer is an urgent problem.
An uninterruptible power supply fault monitoring device is designed, including a power supply module, an uninterruptible power supply, a relay and a fault signal receiving module. By setting the first normally open point on the uninterruptible power supply and closing it when a fault occurs, the second normally open point of the relay is connected to the fault signal receiving module to realize the transmission of the fault signal.
This device can obtain the fault information of the uninterruptible power supply in time, ensuring that timely countermeasures can be taken when a fault occurs to ensure the normal operation of the box transformer.
Smart Images
Figure CN222379859U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of circuit alarms, and in particular to an uninterruptible power supply fault monitoring device. Background Art
[0002] The role of uninterruptible power supply in new energy box transformer (box transformer or box substation) is particularly important. When the AC power supply of the auxiliary power system is interrupted, it can be switched to DC power supply indefinitely to ensure uninterrupted AC output. Whether the uninterruptible power supply works normally is closely related to whether the box transformer can operate normally. Therefore, how to obtain the fault information of the uninterruptible power supply in time when the uninterruptible power supply fails has become an urgent problem to be solved. Utility Model Content
[0003] The purpose of the present application includes, for example, providing an uninterruptible power supply fault monitoring device, which can obtain the fault information of the uninterruptible power supply in a timely manner.
[0004] This application can be implemented as follows:
[0005] The present application provides an uninterruptible power supply fault monitoring device, which includes a power supply module, an uninterruptible power supply, a relay and a fault signal receiving module, wherein the uninterruptible power supply is provided with a first normally open point, the output end of the power supply module and the coil of the relay are both connected to the first normally open point, the first normally open point is closed when the uninterruptible power supply fails, and the relay is provided with a second normally open point, the second normally open point is connected to the input end of the fault signal receiving module to send a voltage signal to the fault signal receiving module.
[0006] Optionally, the power supply module includes a power conversion module, an output end of the power conversion module is connected to the first normally open point, and the power conversion module is used to convert alternating current into direct current.
[0007] Optionally, the output voltage of the power conversion module is 24V.
[0008] Optionally, the power supply module includes a transformer, an input end of the transformer is connected to the mains, and an output end of the transformer is connected to an input end of the power conversion module.
[0009] Optionally, an input end of the uninterruptible power supply is connected to an output end of the transformer, and the output end of the uninterruptible power supply is used to connect a load.
[0010] Optionally, the output voltage of the transformer is 220V.
[0011] Optionally, the uninterruptible power supply has a controller, and the controller controls the first normally open point to close when the uninterruptible power supply fails.
[0012] Optionally, the relay is an intermediate relay.
[0013] Optionally, the fault signal receiving module is a box-type transformer measurement and control device.
[0014] Optionally, the box-type transformer measurement and control device includes a display module, and the display module is used to display the fault signal.
[0015] The beneficial effects of the uninterruptible power supply fault monitoring device of the present application include, for example: in order to obtain the fault information of the uninterruptible power supply in time, an uninterruptible power supply fault monitoring device is designed, and the uninterruptible power supply fault monitoring device includes a power supply module, an uninterruptible power supply, a relay and a fault signal receiving module. The uninterruptible power supply is provided with a first normally open point, the output end of the power supply module and the coil of the relay are both connected to the first normally open point, and the first normally open point is closed when the uninterruptible power supply fails. The relay is provided with a second normally open point, and the second normally open point is connected to the input end of the fault signal receiving module. When the uninterruptible power supply fails, the first normally open point is closed, and the output end of the power supply module supplies power to the coil of the relay through the first normally open point. After the relay is energized, the second normally open point is closed, and the fault signal receiving module receives a voltage signal and can determine that the uninterruptible power supply has failed. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic diagram for illustrating the connection relationship between the power supply module and the relay in the embodiment of the present application;
[0018] Figure 2 This is a schematic diagram for showing the connection relationship between the relay and the fault signal receiving module in the embodiment of the present application;
[0019] Figure 3 This is a schematic diagram used to show the connection relationship between the transformer, uninterruptible power supply, and load in the embodiment of the present application.
[0020] Icons: 1-power supply module; 11-power conversion module; 12-transformer; 2-uninterruptible power supply; 21-first normally open point; 3-relay; 31-second normally open point; 4-fault signal receiving module; 5-load. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0024] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0025] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0026] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.
[0027] The inventor of the present application has found that the role of the uninterruptible power supply in the new energy box transformer is particularly important. When the AC power supply of the auxiliary power system is interrupted, it can be switched to the DC power supply without time limit to ensure uninterrupted AC output. Whether the uninterruptible power supply works normally is closely related to whether the box transformer can operate normally. Therefore, when the uninterruptible power supply fails, how to obtain the fault information of the uninterruptible power supply in time has become an urgent problem to be solved. The embodiment of the present application provides an uninterruptible power supply fault monitoring device, which can obtain the fault information of the uninterruptible power supply in time.
[0028] Please refer to Figure 1-Figure 3The uninterruptible power supply fault monitoring device provided in the embodiment of the present application includes a power supply module 1, an uninterruptible power supply 2, a relay 3 and a fault signal receiving module 4. The uninterruptible power supply 2 is provided with a first normally open point 21, the output end of the power supply module 1 and the coil of the relay 3 are both connected to the first normally open point 21, the first normally open point 21 is closed when the uninterruptible power supply 2 fails, and the relay 3 is provided with a second normally open point 31, the second normally open point 31 is connected to the input end of the fault signal receiving module 4 to send a voltage signal to the fault signal receiving module 4.
[0029] It should be pointed out that the first normally open point 21 is a switch-like device, which can be closed when the uninterruptible power supply 2 fails. The first normally open point 21 is connected to the output end of the power supply module 1 and the coil of the relay 3 at the same time. When the first normally open point 21 is closed, the power supply module 1 can supply power to the coil of the relay 3. The second normally open point 31 of the relay 3 can be closed when the coil of the relay 3 is energized, and is connected to the input end of the fault signal receiving module 4, thereby sending a voltage signal to the fault signal receiving module 4.
[0030] When the uninterruptible power supply 2 fails, the first normally open point 21 is closed, and the output end of the power supply module 1 supplies power to the coil of the relay 3 through the first normally open point 21. After the relay 3 is energized, the second normally open point 31 is closed, and the fault signal receiving module 4 receives the voltage signal and can determine that the uninterruptible power supply 2 has failed.
[0031] The power supply module 1 comprises a power conversion module 11 , an output end of the power conversion module 11 is connected to the first normally open point 21 , and the power conversion module 11 is used to convert alternating current into direct current.
[0032] It should be noted that the first normally open point 21 on the uninterruptible power supply 2 can only carry a certain degree of low-voltage direct current. Therefore, by converting the alternating current into low-voltage direct current through the power conversion module 11 and passing through the first normally open point 21, it is not easy to cause damage to the first normally open point 21.
[0033] In this embodiment, the output voltage of the power conversion module 11 is 24V.
[0034] When the output voltage of the power conversion module 11 is 24V, the first normally open point 21 can bear the voltage of 24V, thereby ensuring that the first normally open point 21 can work normally.
[0035] In other embodiments, the output voltage of the power conversion module 11 may also be 12V, 36V, 48V, etc. The specific output voltage of the power conversion module 11 may be determined according to the load voltage of the first normally open point 21 .
[0036] In this embodiment, the power supply module 1 includes a transformer 12 , an input end of the transformer 12 is connected to the mains, and an output end of the transformer 12 is connected to an input end of the power conversion module 11 .
[0037] It should be pointed out that transformer 12 is a small dry transformer, which belongs to a dry-type transformer. Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places. In short, a dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil.
[0038] The input end of the transformer 12 is connected to the mains, the output end voltage of the transformer 12 is 220V, the output end of the transformer 12 inputs 220V AC to the input end of the power conversion module 11, and the power conversion module 11 converts the 220V AC into 24V DC through the first normally open point 21.
[0039] In other embodiments, the output voltage of the transformer 12 may also be 110V, 380V, etc. The specific output voltage of the transformer 12 may be determined according to the upper limit of the AC voltage that can be converted by the power conversion module 11.
[0040] In this embodiment, the input end of the uninterruptible power supply 2 is connected to the output end of the transformer 12 , and the output end of the uninterruptible power supply 2 is used to connect to the load 5 .
[0041] It should be noted that the uninterruptible power supply 2, namely UPS, is an uninterruptible power supply 2 containing an energy storage device, which is mainly used to provide uninterruptible power supply to some equipment that has high requirements for power supply stability. When the mains input is normal, the uninterruptible power supply 2 stabilizes the voltage output by the output end of the transformer 12 and supplies it to the load 5 for use. At this time, the uninterruptible power supply 2 is an AC voltage stabilizer, and it also charges the battery inside the machine; when the mains power is interrupted (accidental power outage), the uninterruptible power supply 2 immediately uses the DC power of the battery to continue to supply 220V AC power to the load 5 through the method of inverter switching conversion, so that the load 5 maintains normal operation and protects the software and hardware of the load 5 from damage. The uninterruptible power supply 2 can usually provide protection against overvoltage or undervoltage.
[0042] In this embodiment, the uninterruptible power supply 2 has a controller, and the controller controls the first normally open point 21 to close when the uninterruptible power supply 2 fails.
[0043] It should be pointed out that the controller is built into the uninterruptible power supply 2 and can detect the operating status of the uninterruptible power supply 2 in real time, and the controller is electrically connected to the first normally open point 21 to control the first normally open point 21 to be opened or closed; under normal circumstances, the controller controls the first normally open point 21 to be opened, at which time the power conversion module 11 converts the alternating current into a low-voltage direct current that cannot pass through the first normally open point 21, and the relay 3 is in a power-off state; and when the uninterruptible power supply 2 fails, the controller directly controls the first normally open point 21 to be closed, at which time the power conversion module 11 converts the alternating current into a low-voltage direct current that passes through the first normally open point 21, the coil of the relay 3 is energized, the second normally open point 31 of the relay 3 is closed, and the fault signal receiving module 4 can receive the voltage signal in real time.
[0044] In other embodiments, the controller may also be placed outside the uninterruptible power supply 2, as long as the controller can detect the operating status of the uninterruptible power supply 2 in real time and is electrically connected to the first normally open point 21.
[0045] In this embodiment, the relay 3 is an intermediate relay.
[0046] It should be noted that intermediate relays are usually used to transmit signals and control multiple circuits at the same time. They can also be used to directly control small-capacity motors or other electrical actuators. The structure and working principle of intermediate relays are basically the same as those of AC contactors. The main difference between them is that they have more contacts and smaller contact capacity.
[0047] In this embodiment, the fault signal receiving module 4 is a box-type transformer measurement and control device.
[0048] It should be pointed out that the box-type transformer measurement and control device has the box-type transformer measurement and control functions, including the collection of analog data. The analog data mainly includes voltage and current. The box-type transformer measurement and control device also has common protection functions, such as three-stage overcurrent protection, overload protection, etc.
[0049] In this embodiment, the box-type transformer measurement and control device includes a display module, which is used to display fault signals. The display module can be a display screen, etc.
[0050] When the second normally open point 31 of the relay 3 is closed, the transformer measurement and control device receives a voltage signal, i.e., a fault signal, and displays it on the display module. At this time, the staff can observe the fault signal and thus know that the uninterruptible power supply 2 has a fault, so as to take timely countermeasures.
[0051] In summary, the embodiment of the present application provides an uninterruptible power supply fault monitoring device. When the uninterruptible power supply 2 fails, the controller inside the uninterruptible power supply 2 controls the first normally open point 21 to close, and the transformer 12 inputs 220V AC power into the power conversion module 11. The power conversion module 11 converts the 220V AC power into 24V DC power and outputs it to the coil of the relay 3 through the first normally open point 21. The relay 3 is energized and the second normally open point 31 of the relay 3 is closed. At this time, the box transformer measurement and control device can receive the fault signal and display it on the display module so that the staff can take countermeasures in time.
[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. An uninterruptible power supply fault monitoring device, characterized in that: It includes a power supply module, an uninterruptible power supply, a relay and a fault signal receiving module. The uninterruptible power supply is provided with a first normally open point, the output end of the power supply module and the coil of the relay are connected to the first normally open point, the first normally open point is closed when the uninterruptible power supply fails, and the relay is provided with a second normally open point, the second normally open point is connected to the input end of the fault signal receiving module to send a voltage signal to the fault signal receiving module.
2. The uninterruptible power supply fault monitoring device according to claim 1, characterized in that: The power supply module includes a power conversion module, an output end of the power conversion module is connected to the first normally open point, and the power conversion module is used to convert alternating current into direct current.
3. The uninterruptible power supply fault monitoring device according to claim 2, characterized in that: The output voltage of the power conversion module is 24V.
4. The uninterruptible power supply fault monitoring device according to claim 2, characterized in that: The power supply module comprises a transformer, an input end of the transformer is connected to the mains, and an output end of the transformer is connected to an input end of the power conversion module.
5. The uninterruptible power supply fault monitoring device according to claim 4, characterized in that: The input end of the uninterruptible power supply is connected to the output end of the transformer, and the output end of the uninterruptible power supply is used to connect a load.
6. The uninterruptible power supply fault monitoring device according to claim 4, characterized in that: The output voltage of the transformer is 220V.
7. The uninterruptible power supply fault monitoring device according to claim 1, characterized in that: The uninterruptible power supply has a controller, and the controller controls the first normally open point to close when the uninterruptible power supply fails.
8. The uninterruptible power supply fault monitoring device according to claim 1, characterized in that: The relay is an intermediate relay.
9. The uninterruptible power supply fault monitoring device according to claim 1, characterized in that: The fault signal receiving module is a box-type transformer measurement and control device.
10. The uninterruptible power supply fault monitoring device according to claim 9, characterized in that: The box-type transformer measurement and control device comprises a display module, and the display module is used to display the fault signal.