CN220475449U - Parallel high-reliability AC/DC power supply - Google Patents
Parallel high-reliability AC/DC power supply Download PDFInfo
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- CN220475449U CN220475449U CN202322125024.7U CN202322125024U CN220475449U CN 220475449 U CN220475449 U CN 220475449U CN 202322125024 U CN202322125024 U CN 202322125024U CN 220475449 U CN220475449 U CN 220475449U
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- 238000007689 inspection Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 229910001415 sodium ion Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000009467 reduction Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
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Abstract
A parallel high-reliability AC/DC power supply is characterized in that: the device comprises a wire inlet unit, a rectifying and inverting power supply module and a feeder unit; the incoming line unit comprises an alternating current incoming line and an incoming line main switch, and the alternating current incoming line is connected with the incoming line main switch; the number of the rectification inverter power supply modules is N, the N is more than or equal to 1, the rectification inverter power supply modules comprise an AC/DC converter, a storage battery pack, a DC/DC converter and a DC/AC converter, the output end of the AC/DC converter is connected with the input ends of the DC/DC converter and the DC/AC converter, and the output end of the AC/DC converter is also connected with the storage battery pack; the feeder unit comprises a direct current feeder unit and an alternating current feeder unit, wherein the output ends of all DC/DC converters in all the rectifying and inverting power supply modules are connected with the direct current feeder unit, and the output ends of all the DC/AC converters are connected with the alternating current feeder unit. The utility model adopts multi-incoming line and AC/DC output, and has centralized control, convenient expansion, high efficiency and high reliability.
Description
Technical Field
The application relates to the technical field of power supply devices, in particular to a parallel high-reliability alternating current-direct current power supply.
Background
There are many fields in which the power quality and reliability requirements of electrically operated power sources are high, such as power plants, substations, data centers, etc. The current electric power operation power supply, for example, chinese patent literature with publication number CN203086223U discloses a novel electric power operation power supply in 2013, 7 and 24 days, so as to solve the problem that in the prior art, the damage of a certain battery can affect the performance of the whole operation power supply, and the whole group of output power reduction includes a plurality of switch power supply modules, control/switch-on output ports, and is characterized in that: each switching power supply comprises an AC/DC voltage reduction unit, a single 12V battery and a DC/DC voltage increase unit, wherein the single 12V battery is connected between the AC/DC voltage reduction unit and the DC/DC voltage increase unit.
The existing control power sources such as a part of power plants or substations not only require direct current output but also require alternating current output, but the power operation power source provided by the patent only has direct current output and no alternating current output, and meanwhile, only has one alternating current power source input, so that the current requirement can not be well met.
Disclosure of Invention
The application provides a parallel high-reliability AC/DC power supply, which adopts multiple incoming lines and AC/DC output, is controlled in a centralized way, and has the advantages of convenient capacity expansion, high efficiency and high reliability.
The utility model adopts the technical scheme that:
a parallel high-reliability AC/DC power supply comprises a wire inlet unit, a rectifying and inverting power supply module and a feeder unit;
the wire inlet unit comprises an alternating current wire inlet and a wire inlet main switch, the alternating current wire inlet is connected with the wire inlet main switch,
the number of the rectification inversion power supply modules is N, N is more than or equal to 1, the rectification inversion power supply modules comprise an AC/DC converter, a storage battery pack, a DC/DC converter and a DC/AC converter, the output end of the AC/DC converter is connected with the input ends of the DC/DC converter and the DC/AC converter, and the output end of the AC/DC converter is also connected with the storage battery pack;
the incoming line main switch in the incoming line unit is connected with the input ends of the AC/DC converters in all the rectification inversion power supply modules;
the feeder units comprise direct current feeder units and alternating current feeder units, the output ends of all DC/DC converters in the N rectification inversion power supply modules are connected with the direct current feeder units, and the output ends of all DC/AC converters are connected with the alternating current feeder units.
Furthermore, the alternating current inlet wires in the inlet wire unit are multiple, and are multi-loop alternating current inlet wires or multi-power alternating current inlet wires.
Further, a power conversion system is arranged on the alternating current inlet so as to meet the input voltage of the rectifying and inverting power supply module.
Further, the incoming line main switch in the incoming line unit is a mechanical interlocking switch or an electrical interlocking switch.
Further, in the rectifying and inverting power supply module, the input voltage of the input end of the AC/DC converter is 220V.
Further, in the rectifying and inverting power supply module, an input end of the AC/DC converter is connected with an AC inlet switch, an output end of the DC/DC converter is connected with a DC outlet switch, and an output end of the DC/AC converter is connected with an AC outlet switch.
Further, in the rectifying inverter power module, the storage battery pack is one or a combination of a plurality of lead-acid storage battery packs, lithium ion storage battery packs and sodium ion storage battery packs.
Further, in the rectifying and inverting power supply module, the storage battery pack is a storage battery pack with various voltage levels, and the voltage levels range from DC12V to 220V.
The centralized control unit comprises a centralized control module, a storage battery inspection module and an insulation detection module, wherein the storage battery inspection module is connected with storage battery groups in all the rectification and inversion power supply modules in series, the insulation detection module is connected with direct current outgoing switches and alternating current outgoing switches in all the rectification and inversion power supply modules in series, and the centralized control module is respectively connected with the battery inspection module, an AC/DC converter, a DC/DC converter and a DC/AC converter in all the rectification and inversion power supply modules in series, namely, is realized by communication of the centralized controller and each module; and the centralized controller can collect the total line load to realize the load distribution of each module, so that the use safety and reliability of the equipment are ensured, and the working efficiency of the equipment is further improved.
The beneficial effects of the utility model are as follows:
1. the parallel high-reliability AC/DC power supply provided by the utility model has the advantages that the operation of the whole system is not influenced when a single module or a single storage battery fails.
2. When a single module or a single storage battery fails, the parallel high-reliability AC/DC power supply can be withdrawn from operation, replaced or maintained by disconnecting the corresponding branch circuit inlet/outlet switch. The whole process does not influence electricity utilization.
3. The parallel high-reliability AC/DC power supply of the utility model uses the storage battery pack for AC/DC uninterrupted power supply, thereby improving the utilization rate of the equipment. Saving cost and occupied space.
4. The parallel high-reliability AC/DC power supply only needs to be additionally provided with the modules when the load capacity is increased and the capacity is insufficient.
5. The parallel high-reliability alternating current-direct current power supply can be set to be alternately operated or standby when the load is smaller. The loss is reduced and the service life is prolonged.
Drawings
Fig. 1 is an electrical schematic of the present utility model.
In the figure: 1. a wire inlet unit; 11A, a first ac inlet; 11B, a second alternating current incoming line; 2. a rectifying and inverting power supply module; 21. an AC/DC converter; 22. a DC/DC converter; 23. a DC/AC converter; 24. a battery pack; 25. an alternating current inlet wire switch; 26. a direct current outlet switch; 27. an alternating current outlet switch; 3. a feeder unit; 31. a direct current feeder unit; 32. an alternating current feeder unit; 4. a centralized control unit; 41. the centralized control module, 42, insulation detection module; 43. and the storage battery inspection module.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
A feeder is a term in a power distribution network, and may refer to a branch connected to any distribution network node, and may be a feed-in branch or a feed-out branch. But because the typical topology of the distribution network is radial, the energy flow in most feeders is unidirectional. However, in order to improve the power supply reliability, the distribution network structure is complicated to change, and the power transmission is not always in one direction. So roughly speaking, the branches in a distribution network can be referred to as feeders.
Examples:
referring to fig. 1, a parallel high-reliability ac/dc power supply includes a wire inlet unit 1, a rectifying and inverting power supply module 2 and a wire inlet unit 3;
the incoming line unit 1 comprises an alternating current incoming line and an incoming line main switch 12, and the alternating current incoming line is connected with the incoming line main switch 12. The incoming line main switch 12 in the incoming line unit is connected with the input ends of the AC/DC converters 21 in all the rectification inversion power supply modules 2; the two alternating current incoming lines in the incoming line unit are divided into a first alternating current incoming line 11A and a second alternating current incoming line 11B, the first alternating current incoming line 11A is directly connected with the alternating current 220V of the commercial power, and the second alternating current incoming line 11B is connected with the alternating current 220V of the generator. The incoming line main switch 12 in the incoming line unit is a mechanical interlocking switch or an electrical interlocking switch.
The number of the rectification inversion power supply modules 2 is N, N is more than or equal to 1, the rectification inversion power supply modules 2 comprise an AC/DC converter 21, a storage battery pack 24, a DC/DC converter 22 and a DC/AC converter 23, and the input voltage of the input end of the AC/DC converter 21 is 220V. The output end of the AC/DC converter 21 is connected with the input ends of the DC/DC converter 22 and the DC/AC converter 23, and the output end of the AC/DC converter 21 is also connected with the storage battery pack 24; in the rectifying inverter power module 2, the battery pack 24 is one or a combination of a plurality of lead-acid battery packs, lithium ion battery packs and sodium ion battery packs. The battery pack 24 is a battery pack of various voltage levels ranging from DC12V to 220V. Voltage ratings such as DC12V/DC24V … … DC220V. An input end of the AC/DC converter 21 is connected with an AC inlet switch 25, an output end of the DC/DC converter 22 is connected with a DC outlet switch 26, and an output end of the DC/AC converter 23 is connected with an AC outlet switch 27.
The feeder unit 3 comprises a direct current feeder unit 31 and an alternating current feeder unit 32, the output ends of all the DC/DC converters 23 in the N rectification inversion power supply modules 3 are connected with the direct current feeder unit 31, and the output ends of all the DC/AC converters 23 are connected with the alternating current feeder unit 32.
The centralized control unit 4 further comprises a centralized control unit 4, the centralized control unit 4 comprises a centralized control module 41, a storage battery inspection module 43 and an insulation detection module 42, the storage battery inspection module 43 is connected with the storage battery pack 24 in all the rectification and inversion power supply modules 2 in series, the insulation detection module 42 is connected with the direct current outlet switch 26 and the alternating current outlet switch 27 in all the rectification and inversion power supply modules 2 in series, and the centralized control module 41 is respectively connected with the battery inspection module 43, the insulation detection module 42 and the DC/DC converter 22 and the DC/AC converter 23 of the AC/DC converter 21 in all the rectification and inversion power supply modules 2 in series, namely, is realized by communication of the centralized controller 41 and each module; the total line load can be collected through the centralized controller 41, so that the load distribution of each module is realized, the use safety and reliability of the equipment are ensured, and the working efficiency of the equipment is further improved.
The utility model relates to a parallel high-reliability alternating current-direct current power supply, which is characterized in that the working principle of a rectifying and inverting power supply module 2 is as follows: the rectification inversion power supply module converts alternating current of an alternating current inlet wire into direct current through an AC/DC converter and outputs the direct current to the DC/DC converter and the DC/AC converter respectively; the AC/DC converter charges the storage battery pack by using the direct current, and the DC/DC converter charges the direct current outgoing line by using the direct current; the DC/AC converter charges the AC outlet with the direct current.
The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.
Claims (9)
1. A parallel high-reliability AC/DC power supply is characterized in that: the device comprises a wire inlet unit, a rectifying and inverting power supply module and a feeder unit;
the wire inlet unit comprises an alternating current wire inlet and a wire inlet main switch, the alternating current wire inlet is connected with the wire inlet main switch,
the number of the rectification inversion power supply modules is N, N is more than or equal to 1, the rectification inversion power supply modules comprise an AC/DC converter, a storage battery pack, a DC/DC converter and a DC/AC converter, the output end of the AC/DC converter is connected with the input ends of the DC/DC converter and the DC/AC converter, and the output end of the AC/DC converter is also connected with the storage battery pack;
the incoming line main switch in the incoming line unit is connected with the input ends of the AC/DC converters in all the rectification inversion power supply modules;
the feeder units comprise direct current feeder units and alternating current feeder units, the output ends of all DC/DC converters in the N rectification inversion power supply modules are connected with the direct current feeder units, and the output ends of all DC/AC converters are connected with the alternating current feeder units.
2. The parallel high-reliability ac/dc power supply according to claim 1, wherein: the alternating current inlet wires in the inlet wire unit are multiple, and are multi-loop alternating current inlet wires or multi-power alternating current inlet wires.
3. The parallel high-reliability ac/dc power supply according to claim 2, wherein: the alternating current inlet can be provided with a power supply conversion system so as to meet the input voltage of the rectification inversion power supply module.
4. The parallel high-reliability ac/dc power supply according to claim 1, wherein: and the incoming line main switch in the incoming line unit is a mechanical interlocking switch or an electrical interlocking switch.
5. The parallel high-reliability ac/dc power supply according to claim 1, wherein: in the rectification inversion power supply module, the input voltage of the input end of the AC/DC converter is 220V alternating current.
6. The parallel high-reliability ac/dc power supply according to claim 5, wherein: in the rectification inversion power supply module, the input end of the AC/DC converter is connected with an AC inlet switch, the output end of the DC/DC converter is connected with a DC outlet switch, and the output end of the DC/AC converter is connected with an AC outlet switch.
7. The parallel high-reliability ac/dc power supply according to claim 5, wherein: in the rectification inversion power supply module, the storage battery pack is one or a combination of a plurality of lead-acid storage battery packs, lithium ion storage battery packs and sodium ion storage battery packs.
8. The parallel high-reliability ac/dc power supply of claim 7, wherein: in the rectification inversion power supply module, the storage battery pack is a storage battery pack with various voltage levels, and the voltage levels range from DC12V to 220V.
9. The parallel high-reliability ac/dc power supply according to claim 1, wherein: the centralized control unit comprises a centralized control module, a storage battery inspection module and an insulation detection module, wherein the storage battery inspection module is connected with storage battery groups in all the rectification inversion power supply modules in series, the insulation detection module is connected with direct current outgoing switches and alternating current outgoing switches in all the rectification inversion power supply modules in series, and the centralized control module is respectively connected with the battery inspection module, the insulation detection module and an AC/DC converter, a DC/DC converter and a DC/AC converter in all the rectification inversion power supply modules in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125024.7U CN220475449U (en) | 2023-08-08 | 2023-08-08 | Parallel high-reliability AC/DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125024.7U CN220475449U (en) | 2023-08-08 | 2023-08-08 | Parallel high-reliability AC/DC power supply |
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| Publication Number | Publication Date |
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| CN220475449U true CN220475449U (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322125024.7U Active CN220475449U (en) | 2023-08-08 | 2023-08-08 | Parallel high-reliability AC/DC power supply |
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| Country | Link |
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| CN (1) | CN220475449U (en) |
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- 2023-08-08 CN CN202322125024.7U patent/CN220475449U/en active Active
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