CN211790953U - Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering - Google Patents
Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering Download PDFInfo
- Publication number
- CN211790953U CN211790953U CN202020682164.8U CN202020682164U CN211790953U CN 211790953 U CN211790953 U CN 211790953U CN 202020682164 U CN202020682164 U CN 202020682164U CN 211790953 U CN211790953 U CN 211790953U
- Authority
- CN
- China
- Prior art keywords
- direct
- current
- alternating current
- bus
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a combine the alternating current-direct current hybrid power system of each power station power, especially a three laminar alternating current-direct current hybrid station power supply system suitable for multistation fusion engineering, its structural feature lies in, by AC35 (10) kV, AC380V, the three main voltage level of DC750V constitutes, form the structural feature of three level, wherein exchange AC380V by AC35 (10) kV transformer for the workstation provide the power, and direct current DC750V provides the power by energy storage module and photovoltaic module, alternating current-direct current voltage is independent separately and correspond respectively for the alternating current load and the direct current load power supply in the system, alternating current-direct current voltage still carries out organic contact through two sets of alternating current-direct current conversion devices. The utility model has the advantages of, cancel the conventional storage battery that sets up, reduced the duplicate configuration of equipment and the work load of fortune dimension, investment, occupation of land etc. also corresponding reduction have improved the reliability of power supply and the stability of operation greatly.
Description
Technical Field
The utility model relates to a combine the alternating current-direct current hybrid power system of each power station power, especially a three laminar alternating current-direct current hybrid station power supply systems who is applicable to the multi-station fusion engineering.
Background
The power supply system for the existing intelligent substation comprises an alternating current power supply, a direct current power supply, a UPS power supply, a communication power supply, a storage battery pack and the like, wherein the alternating current power supply is supplied by a power grid through a transformer, the direct current power supply is supplied by the storage battery pack, the alternating current power supply is supported by a rectification module, the power supply systems with similar functions are intensively assembled in a secondary equipment room, and the storage battery pack is intensively installed in an independent storage battery room. Besides the power system for the transformer substation, the energy internet complex also comprises 4 core submodules, namely an energy storage module, a data center module, a photovoltaic module and a charging pile module; each submodule is provided with a respective power supply source and/or power supply load, loads contained in a single module, system wiring and battery arrangement are different, for example, direct-current voltages related to a transformer substation are DC220V and DC48V, direct-current voltages related to an energy storage station are in a range of values, generally DC 600-800V, direct-current voltages related to a data center station are mostly DC240V, direct-current voltages related to a charging station are generally DC 200-500V or DC 300-750V, and direct-current voltages related to a photovoltaic station are in a range of values, generally DC 400-800V. The alternating voltage basically adopts AC380/220V for each module. Therefore, the power supply system has the following disadvantages:
1) due to the difference of each module, each module is independent, but the load and power supply requirements of each module are various, and the problems of complexity of a power supply system, inconvenience in operation and maintenance, repeated configuration of equipment, investment waste and the like exist.
2) The module for supplying direct current load is powered by a valve-controlled lead-acid storage battery pack, when the capacity of the storage battery pack is larger than 300Ah, a special storage battery chamber needs to be arranged for arrangement of the storage battery pack, so that the occupied area is increased, the cost is increased, and the problems of environmental pollution and the like are also caused.
3) The single rack load power of data center module is 6kW, when the rack data is more, the load is big, if direct current power supply is considered, then direct current storage battery's capacity will be difficult to realize, consequently adopt alternating current power supply mostly, need set up the UPS device in addition and from the reserve storage battery who takes the large capacity, normally by mains supply, during double-circuit mains supply trouble, support 15min power supply demands by reserve storage battery, obviously the input cost is high, the system is loaded down with trivial details, the operation and maintenance is also very inconvenient.
Disclosure of Invention
An object of the utility model is to provide a synthesize layering, system architecture succinct, effective reduce cost, reduce equipment structure's three laminar alternating current-direct current hybrid station power supply system who is applicable to the multistation and fuses the engineering according to prior art's weak point.
The purpose of the utility model is realized through the following ways:
three laminar alternating current-direct current mix station power supply system suitable for multistation fuses engineering, including transformer substation's module, energy storage module, data center module, photovoltaic module and the stake module that charges, including transformer substation's alternating current load, transformer substation's direct current load, communication alternating current load, communication direct current load in the transformer substation's module, data center module is including data center alternating current load and data center direct current load, and its structural feature lies in, and the system component is as follows:
1) the alternating-current high-voltage layer consists of 2 transformers for the workstation, the high-voltage end of the transformer for the workstation is connected with a high-voltage bus (AC 35kV/10 kV) of a transformer substation,
2) the AC workstation comprises two AC380V AC bus sections which are respectively a bus AC380V-IM and a bus AC380V-IIM, wherein the two AC bus sections are respectively connected to the low-voltage end of a transformer for the workstation, and the transformer for the workstation provides power input; the bus AC380V-IM and the bus AC380V-IIM are connected with a transformer substation alternating current load, a communication alternating current load and a data center alternating current load, and provide alternating current power supplies for the alternating current loads;
3) the direct-current workstation comprises two DC750V direct-current buses which are respectively a bus DC750V-IM and a bus DC750V-IIM, wherein a storage battery of the energy storage module is connected to the direct-current buses at two ends through an energy storage converter and a photovoltaic module through the direct-current converters to supply power to the two direct-current buses; the bus DC750V-IM and the bus DC750V-IIM are respectively connected with a substation direct-current load, a communication direct-current load, a data center direct-current load and a charging pile module through a direct-current converter, and provide direct-current power supplies for the direct-current loads;
4) the UPS device is connected to a section of direct current bus, two sections of alternating current buses are connected at the same time, power is supplied by the section of direct current bus and the alternating current buses at two ends, and the two UPS devices are connected with all UPS loads of the transformer substation module and the data center module to supply power for the UPS loads;
5) a set of alternating current-direct current conversion device is respectively arranged between the alternating current bus AC380V-IM and the direct current bus DC750V-IM, and between the alternating current bus AC380V-IIM and the direct current bus DC750V-IIM, and each set of alternating current-direct current conversion device is respectively connected with the alternating current bus and the direct current bus at the same side.
Therefore, the power supply system of the present invention is composed of three main voltage classes of AC35 (10) kV, AC380V and DC750V, and forms a structural feature of three levels, wherein AC380V is supplied by a transformer for AC35 (10) kV workstation, and DC750V is supplied by an energy storage module and a photovoltaic module, the AC and DC voltages are independent from each other and are organically connected by two sets of AC/DC conversion devices, that is, two sets of AC/DC conversion devices provide mutual support between AC380V and DC 750V: when the AC380V-IM/IIM loses power, the DC750V-IM/IIM supports the AC380V-IM/IIM through the correspondingly connected AC/DC conversion device, otherwise, the DC750V-IM/IIM loses power, the AC380V-IM/IIM supports the DC750V-IM/IIM through the correspondingly connected AC/DC conversion device, and the AC380 AC conversion device and the DC750 DC V-IM/IIM form a mutual backup and complementary integrated design scheme, so that the performance index of the power supply system for the AC and DC stations is enhanced, and the power supply reliability of the power supply system for the AC/DC stations in the multi-station fusion engineering is greatly improved. In addition, the UPS device adopts three parts of alternating current and direct current for power supply, so that all storage batteries and storage battery rooms in conventional design are omitted, the repeated configuration of equipment and the workload of operation and maintenance are greatly reduced, meanwhile, the configuration of the storage batteries for installing and distributing power rooms is correspondingly reduced due to the reduction of the number of the storage batteries, the area of a multi-station fusion engineering building is greatly reduced, the investment, the occupied area and the like are correspondingly reduced, and the construction index of the multi-station fusion engineering is improved.
The utility model discloses can further specifically do:
the transformer for the workstation is a multi-split transformer, or a two-split transformer, or a three-split transformer, or a four-split transformer.
The multi-split transformer can select a bi-split transformer, a tri-split transformer or a tetra-split transformer according to actual engineering requirements, matching calculation is carried out on multi-station fusion engineering loads, and the multi-station fusion engineering loads are divided into 2-4 units according to the long-range scale. After the multi-split transformer is adopted, the number of transformers for a multi-station fusion engineering station and the number of leading loops of a 35 (10) kV switch cabinet can be reduced, so that the investment is saved.
The utility model provides a three laminar alternating current-direct current hybrid station power supply system suitable for multistation fusion engineering, set up AC35 (10) kV, AC380V, three AC of DC750V, direct current station and use power main voltage level, the structure is clear; all storage battery packs arranged in a conventional design are cancelled and are replaced by energy storage modules and direct current DC750V for energy supply, so that the repeated configuration of equipment and the workload of operation and maintenance are greatly reduced, the configuration of a storage battery pack installation and distribution room is correspondingly reduced, the area of a multi-station fusion engineering building is greatly reduced, the investment, the occupied area and the like are correspondingly reduced, and the construction index of the multi-station fusion engineering is improved; AC380V, DC750V are connected through 2 sets of alternating current-direct current conversion devices, form the integrated structure of mutual backup, complementation, have strengthened the performance index of the power system for the alternating current, direct current station, have improved the reliability and stability of operation that the power system supplies power for the alternating current, direct current station of the multi-station fusion project greatly.
Drawings
Fig. 1 is the utility model discloses a three laminar alternating current-direct current mix station power supply system's structural schematic diagram suitable for multistation fuses engineering.
The present invention will be further described with reference to the following examples.
Detailed Description
The best embodiment is as follows:
referring to the attached drawing 1, the power supply system for the three-layer type alternating current-direct current hybrid station suitable for the multi-station fusion engineering comprises a transformer substation module, an energy storage module, a data center module, a photovoltaic module and a charging pile module, wherein the transformer substation module comprises a transformer substation alternating current load, a transformer substation direct current load, a communication alternating current load and a communication direct current load, the data center module comprises a data center alternating current load and a data center direct current load, and the power supply system specifically comprises the following components:
1) by researching various outlet voltages of loads, batteries, photovoltaic and the like, according to GB/T35727-2017 'Medium and Low Voltage direct Current distribution network Voltage guide' the direct current voltage adopts DC750V, and the alternating current voltage adopts AC 380V. The whole set of system is composed of three main voltage levels of AC35 (10) kV, AC380V and DC750V, has a clear structure, meets the requirements of power consumption and power supply of various high-voltage equipment in modules of a multi-station fusion engineering transformer substation, an energy storage module, a charging pile module, a photovoltaic module, a data center module, a communication module and the like, and has good applicability to most equipment manufacturers.
2) The alternating-current high-voltage layer consists of 2 transformers (T1 and T2) for the AC35 (10) kV/380V workstation, and the high-voltage end of the transformers for the workstation is connected with a high-voltage bus (AC 35kV/10 kV) of a transformer substation. The AC35 (10) kV side is connected with a substation AC35 (10) kV bus/off-station standby power supply, and the low-voltage side of the transformer is used as AC380V bus power supply input.
The transformer for the workstation adopts a multi-split transformer, the actual engineering can select a bi-split transformer, a tri-split transformer or a tetra-split transformer according to needs, the multi-station fusion engineering load is subjected to matching calculation, and the multi-station fusion engineering load is divided into 2-4 units according to the long-range scale. After the multi-split transformer is adopted, the number of transformers for a multi-station fusion engineering station and the number of leading loops of a 35 (10) kV switch cabinet can be reduced, so that the investment is saved.
3) The AC workstation is characterized in that 2 sections of buses, namely a bus AC380V-IM and a bus AC380V-IIM, are arranged on the AC380V, the two sections of AC buses are respectively connected to the low-voltage end of a transformer for the workstation, and the transformer for the workstation provides power input; the 2-section alternating current buses adopt single-bus sectional wiring to respectively provide power for alternating current loads of an AC380/220V voltage level of a transformer substation, a communication center and a data center.
4) The DC750V is provided with 2 sections of buses, single-bus connection is adopted, the buses are respectively a bus DC750V-IM and a bus DC750V-IIM, and power is supplied from two sections of DC750V buses as follows: and respectively leading power supplies to DC/DC direct current converters (Z5, Z6) to supply power to direct current loads of the charging pile modules (single bus power supply, output voltage DC 200-500V or DC 300-750V), supplying power to direct current loads of the transformer substation (double bus power supply, output voltage DC 220V) through the DC/DC direct current converters (Z7, Z8), supplying power to the DC/DC direct current converters (Z9, Z10) (double bus power supply, output voltage DC 48V), and supplying power to direct current loads of the data center (double bus power supply, output voltage DC 48V) through the DC/DC direct current converters (Z11, Z12).
The direct DC750V bus electricity taking scheme is directly adopted by the charging pile module, so that the intermediate link that the conventional charging pile adopts AC input and supplies power after passing through an AC/DC conversion device can be saved, and equipment and investment are saved.
5) A storage battery pack of the energy storage module is directly connected to a DC750V bus after passing through PCS (P1 and P2), and a distributed storage battery pack (with input voltage DC 400-800V) in the photovoltaic module is connected to the DC750V bus through a power supply of a DC/DC direct current converter (Z3 and Z4) to provide power input for two sections of buses of DC750V, so that the effective promotion and utilization of the energy storage battery pack and the distributed photovoltaic storage battery pack are realized.
7) 2 sets of UPS devices (U1, U2) are arranged, 3 paths of input power supplies are arranged for improving reliability, are respectively taken from 2 paths of AC380V power supplies and 1 path of DC750V power supplies, and provide alternating current uninterrupted power supplies for all UPS loads of the total station. The UPS device is a station-level UPS, has very high reliability, and can supply power to all UPS loads of a total station.
8) Under the normal state, the DC750V and the AC380V are operated separately, no cross exists between the two, and the system is stable and reliable. Meanwhile, DC/AC conversion devices (Z1 and Z2) are arranged between the DC750V and the AC380V bus, so that mutual support between an alternating current system and a direct current system is realized, when the power supply of the DC750V system is completely lost, the AC380V system supports the DC750V system through AC/DC devices (Z1 and Z2), and when the power supply of the AC380V system is completely lost, the DC750V system supports the AC380V system through DC/AC devices (Z1 and Z2), so that the safety of the power supply system for the alternating current and direct current station in the multi-station fusion engineering is greatly improved.
9) Among the hybrid power source system, the data center rack can adopt DC power supply, fills electric pile and adopts DC power supply, accords with present technical development trend.
10) Alternating current-direct current mixes station power supply system can satisfy all interchange loads, the equal II class load of direct current load of total powerstation and above safe power supply demand.
11) Alternating current-direct current mixes power supply system for station, secondary battery, communication battery that prior art scheme set up, data center UPS, data center battery are all cancelled, are replaced by the storage battery of the energy storage module system that the engineering was fused in many stations, have reduced the reconfiguration of equipment, have practiced thrift equipment and investment greatly.
The part of the utility model which is not described is the same as the prior art.
Claims (2)
1. Three laminar alternating current-direct current mix station power supply system suitable for multistation fuses engineering, including transformer substation module, energy storage module, data center module, photovoltaic module and the stake module of charging, including transformer substation alternating current load, transformer substation direct current load, communication alternating current load, communication direct current load in the transformer substation module, the data center module is including data center alternating current load and data center direct current load, its characterized in that, the system composition as follows:
1) the alternating-current high-voltage layer consists of 2 transformers for the workstation, the high-voltage end of the transformer for the workstation is connected with a high-voltage bus AC35kV/10kV of the transformer substation,
2) the AC workstation comprises two AC380V AC bus sections which are respectively a bus AC380V-IM and a bus AC380V-IIM, wherein the two AC bus sections are respectively connected to the low-voltage end of a transformer for the workstation, and the transformer for the workstation provides power input; the bus AC380V-IM and the bus AC380V-IIM are connected with a transformer substation alternating current load, a communication alternating current load and a data center alternating current load, and provide alternating current power supplies for the alternating current loads;
3) the direct-current workstation comprises two DC750V direct-current buses which are respectively a bus DC750V-IM and a bus DC750V-IIM, wherein a storage battery of the energy storage module is connected to the direct-current buses at two ends through an energy storage converter and a photovoltaic module through the direct-current converters to supply power to the two direct-current buses; the bus DC750V-IM and the bus DC750V-IIM are respectively connected with a substation direct-current load, a communication direct-current load, a data center direct-current load and a charging pile module through a direct-current converter, and provide direct-current power supplies for the direct-current loads;
4) the UPS device is connected to a section of direct current bus, two sections of alternating current buses are connected at the same time, power is supplied by the section of direct current bus and the alternating current buses at two ends, and the two UPS devices are connected with all UPS loads of the transformer substation module and the data center module to supply power for the UPS loads;
5) a set of alternating current-direct current conversion device is respectively arranged between the alternating current bus AC380V-IM and the direct current bus DC750V-IM, and between the alternating current bus AC380V-IIM and the direct current bus DC750V-IIM, and each set of alternating current-direct current conversion device is respectively connected with the alternating current bus and the direct current bus at the same side.
2. The power supply system for the three-layer type alternating current and direct current hybrid station suitable for the multi-station fusion project according to claim 1, wherein the transformer for the workstation is a multi-split transformer, or a two-split transformer, or a three-split transformer, or a four-split transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682164.8U CN211790953U (en) | 2020-04-29 | 2020-04-29 | Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682164.8U CN211790953U (en) | 2020-04-29 | 2020-04-29 | Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211790953U true CN211790953U (en) | 2020-10-27 |
Family
ID=72957364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020682164.8U Active CN211790953U (en) | 2020-04-29 | 2020-04-29 | Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211790953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688420A (en) * | 2021-01-07 | 2021-04-20 | 国网上海市电力公司 | AC/DC power supply topological structure suitable for all-in-one station |
| CN113437768A (en) * | 2021-06-18 | 2021-09-24 | 深圳供电局有限公司 | Power supply system |
-
2020
- 2020-04-29 CN CN202020682164.8U patent/CN211790953U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688420A (en) * | 2021-01-07 | 2021-04-20 | 国网上海市电力公司 | AC/DC power supply topological structure suitable for all-in-one station |
| CN113437768A (en) * | 2021-06-18 | 2021-09-24 | 深圳供电局有限公司 | Power supply system |
| CN113437768B (en) * | 2021-06-18 | 2024-02-20 | 深圳供电局有限公司 | Power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107612051B (en) | AC/DC hybrid system based on dual-redundancy power electronic transformer | |
| CN102738836A (en) | Alternating current and direct current hybrid micro power grid system and control method thereof | |
| CN211790953U (en) | Three-layer type power supply system for alternating current-direct current hybrid station suitable for multi-station fusion engineering | |
| CN110829508A (en) | Two-way-one-to-one series-parallel micro-grid structure suitable for multi-station fusion | |
| WO2022028116A1 (en) | Station-used direct current power supply system for 220 kv intelligent energy station | |
| CN110350562A (en) | A kind of energy-accumulating power station | |
| WO2020248421A1 (en) | Multiple-input-multiple-output power supply apparatus and integrated cabinet | |
| CN111463787B (en) | Flexible networking system for power grids with different voltage levels in enterprise | |
| CN110380506A (en) | A kind of distributed multiple-connected battery system for prefabricated cabin formula unit equipment | |
| CN112688420A (en) | AC/DC power supply topological structure suitable for all-in-one station | |
| CN102231528A (en) | Power supply and distribution system for electric vehicle centralized charging station | |
| CN112421679A (en) | Electrical wiring structure based on hybrid micro-grid and energy flowing method thereof | |
| CN115473228B (en) | Heterogeneous multi-port alternating current and direct current power electronic networking device | |
| CN216959346U (en) | Alternating current-direct current microgrid router system for comprehensive energy station | |
| CN111463786B (en) | Power consumption enterprise internal flexible networking system with multiple distribution transformers | |
| CN212543374U (en) | Direct-current power supply system for 110kV intelligent energy station | |
| CN212258417U (en) | DC power supply system for 220kV intelligent energy station | |
| CN113783196A (en) | Power supply system of intelligent energy station | |
| CN209402165U (en) | Power supply device and base station power supply system | |
| CN112671020A (en) | Shore power energy storage system | |
| CN110994605A (en) | Alternating current-direct current microgrid system | |
| CN111769580A (en) | Direct current power supply system for 110kV intelligent energy station | |
| CN112865166A (en) | Device and method for flexibly interconnecting low-voltage transformer areas | |
| Kou et al. | The Design Method of AC-DC Microgrid Based on Smart Energy Station | |
| CN211405481U (en) | AC-DC microgrid system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |