CN219513843U - Backup power supply local side equipment - Google Patents
Backup power supply local side equipment Download PDFInfo
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- CN219513843U CN219513843U CN202321736978.5U CN202321736978U CN219513843U CN 219513843 U CN219513843 U CN 219513843U CN 202321736978 U CN202321736978 U CN 202321736978U CN 219513843 U CN219513843 U CN 219513843U
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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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Abstract
The utility model discloses a backup power supply local side device, which comprises: the device comprises a rectifying module, a power supply switching module, a power supply monitoring module and an energy storage module; the input end of the rectifying module is connected with the alternating current input, and the output end of the rectifying module is connected with the first input end of the power supply switching module; the first output end of the power supply switching module is connected with a direct-current power supply line; the input end of the power supply monitoring module is connected with the alternating current input, and the output end of the power supply monitoring module is connected with the second input end of the power supply switching module; the input end of the energy storage module is connected with the second output end of the power supply switching module, and the output end of the energy storage module is connected with the third input end of the power supply switching module. The utility model can effectively monitor the abnormality of the input power supply of the local side equipment, and when the input power supply is abnormal, the power supply of the abnormal input power supply is timely disconnected, the energy storage module connected with the abnormal input power supply is switched to be used as the power supply, the standby continuous power supply of the remote side equipment by the energy storage module is realized, the uninterrupted operation of important equipment is ensured, the loss caused by power failure is reduced, and the fault solving time is striven for power grid maintenance personnel.
Description
Technical Field
The utility model relates to the technical field of remote backup power supply equipment, in particular to backup power supply local side equipment.
Background
Under the normal power supply condition, in the whole direct current remote power supply system, a power grid is used as an input power source, power is supplied to remote equipment through local equipment, two sets of local equipment are usually arranged, different power grid lines are respectively used as alternating current input power sources, and when the power grid line of one set of local equipment fails and cannot work normally, the loop power supply system can be used for supplying power to the remote equipment with power failure through the other local equipment. However, when all local side devices in the system fail and cannot work normally, no backup scheme is provided for continuously supplying power to the remote side devices, so that all the remote side devices in the system stop working due to no input power supply, and a large amount of loss is caused.
Disclosure of Invention
Based on this, it is necessary to provide a backup power supply local side device to solve the problem that in the prior art, the remote side device stops working due to power failure of all local side devices.
The utility model provides a backup power supply local side device, which comprises:
the device comprises a rectifying module, a power supply switching module, a power supply monitoring module and an energy storage module;
the input end of the rectifying module is connected with the alternating current input, and the output end of the rectifying module is connected with the first input end of the power supply switching module;
the first output end of the power supply switching module is connected with a direct-current power supply line;
the input end of the power supply monitoring module is connected with the alternating current input, and the output end of the power supply monitoring module is connected with the second input end of the power supply switching module;
the input end of the energy storage module is connected with the second output end of the power supply switching module, and the output end of the energy storage module is connected with the third input end of the power supply switching module;
the power supply monitoring module is used for monitoring whether the alternating current input is abnormal or not and sending the monitoring condition to the power supply switching module so that the power supply switching module can execute power supply switching according to the monitoring condition;
the power supply switching module is used for disconnecting the connection between the first input end of the power supply switching module and the output end of the rectifying module when the abnormality of the alternating current input is detected, switching the connection between the second output end of the power supply switching module and the input end of the energy storage module into the connection between the third input end of the power supply switching module and the output end of the energy storage module, and switching the alternating current input power supply into the energy storage module power supply.
Further, the power monitoring module includes:
the system comprises an A-phase terminal, a B-phase terminal, a C-phase terminal, a first voltage transformer T1, a second voltage transformer T2, a third voltage transformer T3 and an acquisition monitoring module, wherein,
the A-phase terminal, the B-phase terminal and the C-phase terminal are respectively connected with one phase of alternating current input;
the acquisition monitoring module is connected with the second input end of the power supply switching module;
the first pin of the A-phase terminal is connected with the second pin of the A-phase terminal through a piezoresistor R10 and is also connected with the second pin of the first voltage transformer T1; the second pin of the A-phase terminal is connected with the first pin of the first voltage transformer T1 through a resistor R1 and a resistor R3; the third pin of the first voltage transformer T1 is connected with the positive electrode of the diode D1, and the negative electrode of the diode D1 is connected with the fourth pin of the first voltage transformer T1 through a resistor R5, a protection diode D4 and a capacitor C1 which are connected in parallel and grounded; the cathode of the diode D1 is also connected with the acquisition monitoring module;
the connection mode of the B-phase terminal and the second voltage transformer T2 and the collection monitoring module, and the connection mode of the C-phase terminal and the third voltage transformer T3 and the collection monitoring module are the same as the connection mode of the A-phase terminal and the first voltage transformer T1 and the collection monitoring module.
Further, the power supply switching module includes:
transistor Q1, switching module, control module, switching control power supply, wherein,
the control module is connected with the base electrode of the triode Q1 through a resistor R22; the control module is also used as a second input end of the power supply switching module and is connected with the acquisition monitoring module;
the base electrode of the triode Q1 is also connected with the emitter electrode of the triode Q1 through a resistor R23 and grounded; the collector of the triode Q1 is also connected with the anode of a diode D21, and the cathode of the diode D21 is also connected with a switching control power supply through a resistor R21;
the output terminal J1 of the switching module is used as a first output end of the power switching module and is connected with a direct-current power line; the input terminal J2 of the switching module is used as a first input end of the power switching module and is connected with the output end of the rectifying module; the input terminal J3 of the switching module is used as a third input end of the power switching module and is connected with the output end of the energy storage module;
the switching pin A2 of the switching module is connected between the collector of the triode Q1 and the anode of the diode D21, and the switching pin A1 of the switching module is connected between the cathode of the diode D21 and the resistor R21.
Further, the energy storage module comprises a plurality of integrated battery cells, a battery management system BMS, an energy storage converter PCS, an active safety system, an intelligent power distribution system and an energy storage energy block of a thermal management system.
Furthermore, a heat dissipation refrigerating system is integrated in the energy storage energy block.
Further, the backup power supply local side device further includes: the communication interface is connected with the power supply switching module and is used for feeding back the power supply switching execution condition of the power supply switching module.
The utility model adopts the technical scheme and has the following beneficial effects:
the power supply monitoring module is arranged for monitoring whether the input power supply of the local side equipment is abnormal or not in real time, when the input power supply is abnormal, the power supply of the abnormal input power supply is disconnected in time through the power supply switching module, the energy storage module connected with the abnormal input power supply is switched to be used as a power supply, the standby continuous power supply of the energy storage module to the remote equipment is realized, the uninterrupted operation of important equipment is maintained and ensured, the loss caused by power failure is effectively reduced, and the fault solving time is striven for power grid maintenance personnel to recover normal power supply.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
fig. 1 is a schematic structural diagram of a backup power office device in one embodiment.
Fig. 2 is a schematic circuit diagram of a power monitoring module 300 in one embodiment.
Fig. 3 is a schematic circuit diagram of a power switching module 200 in one embodiment.
Reference numerals illustrate: the device comprises a rectifying module 100, a power switching module 200, a power monitoring module 300 and an energy storage module 400.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the examples herein, which are within the scope of the utility model, will be within the purview of one of ordinary skill in the art without the exercise of inventive faculty.
As shown in fig. 1, in one embodiment, a backup power office device is provided, including:
the power supply system comprises a rectification module 100, a power supply switching module 200, a power supply monitoring module 300 and an energy storage module 400;
the input end of the rectifying module 100 is connected with the alternating current input, and the output end of the rectifying module 100 is connected with the first input end of the power supply switching module 200;
the first output end of the power supply switching module 200 is connected with a direct-current power supply line;
the input end of the power supply monitoring module 300 is connected with the alternating current input, and the output end is connected with the second input end of the power supply switching module 200;
the input end of the energy storage module 400 is connected with the second output end of the power supply switching module 200, and the output end is connected with the third input end of the power supply switching module 200;
the power supply monitoring module 300 is configured to monitor whether the ac power input is abnormal, and send the monitored condition to the power supply switching module 200, so that the power supply switching module 200 performs power supply switching according to the monitored condition;
the power switching module 200 is configured to disconnect the connection between the first input end of the power switching module 200 and the output end of the rectifying module 100 when the abnormality of the ac power input is detected, switch the connection between the second output end of the power switching module 200 and the input end of the energy storage module 400 to the connection between the third input end of the power switching module 200 and the output end of the energy storage module 400, and switch the ac power input to the energy storage module.
Under the normal power supply condition, in the whole direct current remote power supply system, a power grid is used as an input power source, power is supplied to remote equipment through local equipment, two sets of local equipment are usually arranged, different power grid lines are respectively used as alternating current input power sources, and when the power grid line of one set of local equipment fails and cannot work normally, the loop power supply system can be used for supplying power to the remote equipment with power failure through the other local equipment. However, when all local side devices in the system fail and cannot work normally, no backup scheme is provided for continuously supplying power to the remote side devices, so that all the remote side devices in the system stop working due to no input power supply, and a large amount of loss is caused.
In order to solve this problem, in this embodiment, a backup power supply local side device is provided, which not only includes a rectifying module 100 for converting ac power input into dc power under normal power supply conditions, but also includes a power monitoring module 300 for monitoring whether an input power supply connected to the local side device is abnormal in real time, when the input power supply is monitored to be abnormal, through a power switching module 200 provided, the connection with the rectifying module 100 is disconnected, that is, the power supply of the abnormal input power supply is disconnected, and then the output end of the power switching module 200 is connected with the input end of the energy storage module 400, so that the input end of the power switching module 200 is connected with the output end of the energy storage module 400, so that at this time, the energy storage module 400 is changed from passive input stored power to active output power, that is, the energy storage module 400 is used as an input power supply, and the output power from the energy storage module 400 is provided to a remote dc device, so that when the input power supply is monitored to be switched to the energy storage module 400, and when the input power supply is monitored to be recovered to be normal power supply, the power supply is switched to be normally through the input power supply through the power switching module 200.
According to the embodiment, when abnormal conditions such as power failure of an input power supply and the like occur in local side equipment, the power supply of the abnormal input power supply is timely disconnected, the energy storage module connected with the abnormal input power supply is switched to serve as a power supply, standby continuous power supply of remote equipment is realized, uninterrupted operation of important equipment is maintained and ensured, loss caused by power failure is effectively reduced, and fault solving time is striven for power grid maintenance personnel so as to recover normal power supply.
Further, as shown in fig. 2, in one embodiment, the power monitoring module 300 includes:
the system comprises an A-phase terminal, a B-phase terminal, a C-phase terminal, a first voltage transformer T1, a second voltage transformer T2, a third voltage transformer T3 and a collection monitoring module;
the phase A terminal, the phase B terminal and the phase C terminal are respectively connected with one phase of alternating current in the alternating current input;
the acquisition monitoring module is connected with the second input end of the power supply switching module 200;
the first pin of the A-phase terminal is connected with the second pin of the A-phase terminal through a piezoresistor R10 and is also connected with the second pin of the first voltage transformer T1; the second pin of the A-phase terminal is connected with the first pin of the first voltage transformer T1 through a resistor R1 and a resistor R3; the third pin of the first voltage transformer T1 is connected with the positive electrode of the diode D1, and the negative electrode of the diode D1 is connected with the fourth pin of the first voltage transformer T1 and grounded through a resistor R5, a protection diode D4 and a capacitor C1 which are connected in parallel respectively; the cathode of the diode D1 is also connected with the acquisition monitoring module;
the connection mode of the B-phase terminal and the second voltage transformer T2 and the collection monitoring module, and the connection mode of the C-phase terminal and the third voltage transformer T3 and the collection monitoring module are the same as the connection mode of the A-phase terminal and the first voltage transformer T1 and the collection monitoring module:
the first pin of the B-phase terminal is connected with the second pin of the B-phase terminal through a piezoresistor R11 and is also connected with the second pin of the second voltage transformer T2; the second pin of the B-phase terminal is connected with the first pin of the second voltage transformer T2 through a resistor R2 and a resistor R4; the third pin of the second voltage transformer T2 is connected with the positive electrode of the diode D2, and the negative electrode of the diode D2 is connected with the fourth pin of the second voltage transformer T2 and grounded through a resistor R8, a protection diode D5 and a capacitor C2 which are connected in parallel respectively; the cathode of the diode D2 is also connected with the acquisition monitoring module;
the first pin of the C-phase terminal is connected with the second pin of the C-phase terminal through a piezoresistor R12 and is also connected with the second pin of a third voltage transformer T3; the second pin of the C-phase terminal is connected with the first pin of the third voltage transformer T3 through a resistor R6 and a resistor R7; the third pin of the third voltage transformer T3 is connected with the positive electrode of the diode D3, and the negative electrode of the diode D3 is connected with the fourth pin of the third voltage transformer T3 and grounded through a resistor R9, a protection diode D6 and a capacitor C3 which are connected in parallel respectively; the negative electrode of the diode D3 is also connected with the acquisition monitoring module.
In the specific implementation process, each phase of input three-phase alternating current can be connected to a terminal corresponding to A, B, C through zero lines, the same is adopted as B, C by taking an A phase as an example, R1 and R3 are current limiting protection resistors, R10 is a piezoresistor, high voltage is prevented from entering a rear end module, the high voltage is changed into low voltage in a collectable range of a collecting and monitoring module after passing through a voltage transformer, a diode D1 converts alternating current voltage into direct current voltage, R5 is a load of the transformer, D4 is a protection diode, the collecting and monitoring module is prevented from being damaged by high voltage, and C1 is a filter capacitor, so that clutter is removed. When three phases or one of the phases in the alternating current are powered off, the acquisition side of the corresponding acquisition monitoring module cannot acquire a voltage value, the abnormal input power supply is judged to be monitored, and abnormal monitoring conditions are sent to the power supply switching module, so that the power supply switching module switches off the power supply of the abnormal input power supply, the energy storage module connected with the power supply switching module is switched to be the input power supply, and the power supply switching from the alternating current input power supply to the energy storage module is realized. Specifically, the acquisition monitoring module in this embodiment may be a single-chip microcomputer.
Further, as shown in fig. 3, in an embodiment, the power switching module 200 includes:
transistor Q1, switching module, control module, switching control power supply, wherein,
the control module is connected with the base electrode of the triode Q1 through a resistor R22; the control module is also used as a second input end of the power supply switching module 200 and is connected with the acquisition monitoring module;
the base electrode of the triode Q1 is also connected with the emitter electrode of the triode Q1 through a resistor R23 and grounded; the collector of the triode Q1 is also connected with the anode of a diode D21, and the cathode of the diode D21 is also connected with a switching control power supply through a resistor R21;
the output terminal J1 of the switching module is used as a first output end of the power switching module 200 and is connected with a direct-current power line; the input terminal J2 of the switching module is used as a first input end of the power switching module 200 and is connected with the output end of the rectifying module 100; the input terminal J3 of the switching module is used as a third input end of the power switching module 200 and is connected with the output end of the energy storage module 400;
the switching pin A2 of the switching module is connected between the collector of the transistor Q1 and the anode of the diode D21, and the switching pin A1 of the switching module is connected between the cathode of the diode D21 and the resistor R21.
In a specific implementation process, the switch in the switching module may be a double pole double throw switch, the highest passing voltage is direct current 1000V, the output terminal J1 is used as the first output end of the power switching module 200, connected to the direct current power line, the input terminal J2 is used as the first input end of the power switching module 200, connected to the output end of the rectifying module 100, used as the power input of the power grid of the local device, and the input terminal J3 is used as the third input end of the power switching module 200, connected to the output end of the energy storage module 400. The switching control power supply can be a 24V direct current power supply, and the on-off is controlled by the control module and the triode, so that the power supply switching function of the power supply switching module is achieved. When the power supply switching is performed, the control module controls to disconnect the connection between the input terminal J2 of the switching module and the output end of the rectifying module 100, and to conduct the connection between the output terminal J3 of the switching module and the output end of the energy storage module, so that the energy storage module 400 is converted from passive input storage electric energy into active output electric energy at this time, that is, the energy storage module 400 is changed to be used as an input power supply, and the output electric energy from the energy storage module 400 is sequentially supplied to the far-end direct current device through the output terminal J3 and the output terminal J1 of the switching module, so that the switching of the power supply from the alternating current input to the energy storage module 400 is realized. Specifically, the control module in this embodiment may also be a single-chip microcomputer.
Further, in one embodiment, the energy storage module 400 includes a plurality of integrated cells, a battery management system BMS, an energy storage converter PCS, an active safety system, an intelligent power distribution system, and an energy storage energy block of a thermal management system.
In a specific implementation process, the energy storage module 400 can be set to be a mature energy storage energy block distributed scheme, and a long-life battery cell, a high-efficiency balanced BMS, a high-performance PCS, an active safety system, an intelligent power distribution system and a thermal management system are adopted and fused in a single cabinet, so that each energy block has the capabilities of electric energy storage and alternating current-direct current conversion, and the operation and maintenance power supply requirements of safety, stability, reliability and long-term operation are met.
Further, in an embodiment, a heat dissipation and refrigeration system is integrated inside the energy storage energy block.
Meanwhile, when the energy storage module 400 stores electric energy and outputs the alternating current-direct current conversion, if the energy storage module is not processed, the damage of the energy storage module is directly caused, and the working efficiency and the effect are affected.
Further, in an embodiment, the backup power supply office device further includes: the communication interface is connected with the power switching module 200 and is used for feeding back the power switching execution condition of the power switching module 200.
The above disclosure is only illustrative of the preferred embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (6)
1. A backup powered local side device, comprising:
the device comprises a rectifying module, a power supply switching module, a power supply monitoring module and an energy storage module;
the input end of the rectifying module is connected with the alternating current input, and the output end of the rectifying module is connected with the first input end of the power supply switching module;
the first output end of the power supply switching module is connected with a direct-current power supply line;
the input end of the power supply monitoring module is connected with the alternating current input, and the output end of the power supply monitoring module is connected with the second input end of the power supply switching module;
the input end of the energy storage module is connected with the second output end of the power supply switching module, and the output end of the energy storage module is connected with the third input end of the power supply switching module;
the power supply monitoring module is used for monitoring whether the alternating current input is abnormal or not and sending the monitoring condition to the power supply switching module so that the power supply switching module can execute power supply switching according to the monitoring condition;
the power supply switching module is used for disconnecting the connection between the first input end of the power supply switching module and the output end of the rectifying module when the abnormality of the alternating current input is detected, switching the connection between the second output end of the power supply switching module and the input end of the energy storage module into the connection between the third input end of the power supply switching module and the output end of the energy storage module, and switching the alternating current input power supply into the energy storage module power supply.
2. The back-up office device of claim 1, wherein the power monitoring module comprises:
the system comprises an A-phase terminal, a B-phase terminal, a C-phase terminal, a first voltage transformer T1, a second voltage transformer T2, a third voltage transformer T3 and an acquisition monitoring module, wherein,
the A-phase terminal, the B-phase terminal and the C-phase terminal are respectively connected with one phase of alternating current input;
the acquisition monitoring module is connected with the second input end of the power supply switching module;
the first pin of the A-phase terminal is connected with the second pin of the A-phase terminal through a piezoresistor R10 and is also connected with the second pin of the first voltage transformer T1; the second pin of the A-phase terminal is connected with the first pin of the first voltage transformer T1 through a resistor R1 and a resistor R3; the third pin of the first voltage transformer T1 is connected with the positive electrode of the diode D1, and the negative electrode of the diode D1 is connected with the fourth pin of the first voltage transformer T1 through a resistor R5, a protection diode D4 and a capacitor C1 which are connected in parallel and grounded; the cathode of the diode D1 is also connected with the acquisition monitoring module;
the connection mode of the B-phase terminal and the second voltage transformer T2 and the collection monitoring module, and the connection mode of the C-phase terminal and the third voltage transformer T3 and the collection monitoring module are the same as the connection mode of the A-phase terminal and the first voltage transformer T1 and the collection monitoring module.
3. The back-up office device of claim 2, wherein the power switching module comprises:
transistor Q1, switching module, control module, switching control power supply, wherein,
the control module is connected with the base electrode of the triode Q1 through a resistor R22; the control module is also used as a second input end of the power supply switching module and is connected with the acquisition monitoring module;
the base electrode of the triode Q1 is also connected with the emitter electrode of the triode Q1 through a resistor R23 and grounded; the collector of the triode Q1 is also connected with the anode of a diode D21, and the cathode of the diode D21 is also connected with a switching control power supply through a resistor R21;
the output terminal J1 of the switching module is used as a first output end of the power switching module and is connected with a direct-current power line; the input terminal J2 of the switching module is used as a first input end of the power switching module and is connected with the output end of the rectifying module; the input terminal J3 of the switching module is used as a third input end of the power switching module and is connected with the output end of the energy storage module;
the switching pin A2 of the switching module is connected between the collector of the triode Q1 and the anode of the diode D21, and the switching pin A1 of the switching module is connected between the cathode of the diode D21 and the resistor R21.
4. The back-up office device of claim 1, wherein the energy storage module comprises a plurality of integrated cells, a battery management system BMS, an energy storage converter PCS, an active safety system, an intelligent power distribution system, and an energy storage energy block of a thermal management system.
5. The back-up office device of claim 4, wherein a heat sink refrigeration system is further integrated within the energy storage energy block.
6. A back-up office device according to any of claims 1 to 5, further comprising: the communication interface is connected with the power supply switching module and is used for feeding back the power supply switching execution condition of the power supply switching module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321736978.5U CN219513843U (en) | 2023-07-05 | 2023-07-05 | Backup power supply local side equipment |
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| CN202321736978.5U CN219513843U (en) | 2023-07-05 | 2023-07-05 | Backup power supply local side equipment |
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