CN206517122U - Distributed AC power supply module for transformer station's prefabricated cabin - Google Patents
Distributed AC power supply module for transformer station's prefabricated cabin Download PDFInfo
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- CN206517122U CN206517122U CN201720256930.2U CN201720256930U CN206517122U CN 206517122 U CN206517122 U CN 206517122U CN 201720256930 U CN201720256930 U CN 201720256930U CN 206517122 U CN206517122 U CN 206517122U
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- direct current
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- alternating current
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Abstract
The utility model is related to a kind of station power supply of transformer station, a kind of particularly distributed AC power supply module for transformer station's prefabricated cabin, its structural feature is, the end of incoming cables connection electric main of alternating current inlet wire switch, leading-out terminal incoming transport turns direct current submodule, exchange turns the output end connection direct current output bus of direct current submodule, and the output end of direct current output bus connects secondary battery unit by analog switch, another output end access direct current delivers stream submodule, and direct current delivers stream submodule and exports bus by exchanging the exchange that outlet switch access screen cabinet is powered；The top that the end of incoming cables of alternating current inlet wire switch is also connected to each ac panel cabinet in exchange output bus, prefabricated cabin by alternating current bypass switch is mounted with described AC power supply module.Advantage is that it is possible to increase the design size of secondary device, or saves occupation of land；Facilitate O＆M, and greatly improve electrical secondary system operational reliability；The utilization rate of battery greatly improves, it is to avoid waste, and reduces construction costs.
Description
Technical field
The utility model is related to a kind of station power supply of transformer station, particularly a kind of distribution for transformer station's prefabricated cabin
AC power supply module.
Background technology
The station of transformer station is general by several part groups such as AC power, dc source, communication power supply, batteries with power supply
Into.In the transformer station using prefabricated cabin formula unit equipment, the station of transformer station is used with power supply concentrates complete arrangement, alternating current-direct current system
System screen cabinet is usually placed in secondary device room, and an indoor, outdoor secondary device and outdoor prefabricated are given by cable radiation type electric supply
Direct current split screen in cabin, direct current split screen supplies electricity to below deck equipment by cable radiant type again.When transformer station is larger, battery
When capacity is larger, stand in also need to set self-contained storage battery room, centralized arrangement batteries.In 110kV transformer stations, secondary device
Indoor ac and dc systemses screen cabinet be usually in 8 ~ 9 face screens, each prefabricated cabin direct current split screen be usually 1 ~ 2 face screen.In 220kV power transformations
In standing, in secondary device room ac and dc systemses screen cabinet be usually in 10 ~ 14 face screens, each prefabricated cabin direct current split screen be usually 1 ~ 2
Face screen.But this centralized power supply system but there are following weak point：
First, take up an area to save, by design optimization, transformer station's floor space is constantly reducing.But current friendship is straight
Streaming system screen cabinet quantity is difficult to reduce, and limits secondary device chamber size, or even must also increase battery room so that transformer station
Construction area, floor space are difficult to further compression, and this problem is especially prominent in transformer substation in city.
In addition, ac and dc systemses concentrated setting, is that full station equipment radiant type is powered by cable.Work as DC system fault
When, whole station protection equipment dead electricity can be caused, potential safety hazard is serious, and electrical secondary system reliability is low.
Primary equipment will not be once upper neat in usual transformer station, and second phase, the third stage of the project are often completed after more than ten years.But be
Later stage enlarging does not have a power failure, straight-flow system must according to final scale in first stage of the project on it is neat, cause transformer station's Life cycle
During battery utilization rate it is low.And the life of storage battery often only has 5 ~ 7 years service life, battery must also be determined even if low-load
Phase is changed, wastes serious.
The content of the invention
The purpose of this utility model be according to provide in place of the deficiencies in the prior art one kind effectively save can take up an area,
Ensure electrical secondary system operational reliability, do not waste the distributed AC power mould for transformer station's prefabricated cabin of electric power storage Pooled resources
Block.
The purpose of this utility model is realized by following approach：
For the distributed AC power supply module of transformer station's prefabricated cabin, its structural feature is, includes alternating current inlet wire and opens
Close, exchange turns direct current submodule, secondary battery unit, alternating current bypass switch and direct current deliver stream submodule；Alternating current inlet wire switch
End of incoming cables connects electric main, and leading-out terminal incoming transport turns direct current submodule, and the output end connection that exchange turns direct current submodule is straight
Stream output bus, and the output end of direct current output bus connects secondary battery unit by analog switch, another output end access is straight
Circulation exchange submodule, direct current delivers stream submodule and exports bus by exchanging the exchange that outlet switch access screen cabinet is powered；
The end of incoming cables of alternating current inlet wire switch is also connected to each ac panel cabinet in exchange output bus, prefabricated cabin by alternating current bypass switch
Top be mounted with described AC power supply module.
The electric main is 220V AC powers, and it switchs incoming transport by alternating current inlet wire and turns direct current submodule（AC/
DC submodules）, rectification is that 12V dc sources access direct current output bus, is on the one hand secondary battery unit floating charging；On the other hand
Access direct current delivers stream submodule（DC/AC submodules）, it is 220V AC powers by the inversion of DC/AC submodules, finally leads to again
Cross built-in exchange outlet switch and export to cabinet load.When some sub-module fault, disconnect alternating current inlet wire switch and exchange out
Wiretap, close alternating current bypass switch, now in secondary screen cabinet each device by cabinet top ac bus（Civil power）Directly power；Work as friendship
When flowing into line and losing voltage, then alternating current inlet wire is switched off, or alternating current bypass is switched off, and secondary battery unit starts electric discharge,
DC/AC submodules are connected to via direct current output bus, it is to load to supply in cabinet to export 220V AC powers by DC/AC submodules
Electricity, safeguards if secondary battery unit failure or needs are detected, then disconnects analog switch.From operation principle, AC power
Module provides commutation inversion, alternating current bypass, the tunnel of battery inversion three exchange stand-by heat output for its load, and reliability is greatly carried
It is high.
So, the power supply for whole prefabricated cabin being concentrated on into ac panel cabinet originally splits into some AC power supply modules, then
The need in prefabricated cabin, it is installed in a distributed manner above the screen cabinet for needing AC power, is effectively utilized hanging down for prefabricated cabin
Straight space, thereby eliminating the ac panel cabinet in prefabricated cabin, by increasing capacitance it is possible to increase the design size of secondary device, or save occupation of land；
Further, since battery room is divided into non-interfering, low capacity secondary battery unit, once there is secondary battery unit failure,
Also its corresponding screen cabinet of stopping transport is only needed to, is unlikely to so that the secondary device in standing all loses stand-by power supply, and each
The equal independent operating of AC power supply module, dispersed placement or is overhauled all without having influence on it at the failure of a certain AC power supply module
The operation of his module, therefore not only facilitate O＆M, and greatly improve electrical secondary system operational reliability；Finally, battery section
Can be according to the duration collocation in successive steps of secondary device, the utilization rate without one-time-reach-place, therefore battery is greatly improved, it is to avoid
Waste, reduce construction costs.
The utility model can be specially further：
Also include control unit, I/V converter summation current transformers, I/V converters are voltage collector, I/V conversions
Device is installed on the end of incoming cables of alternating current inlet wire switch, and current transformer has two, and one is installed on the end of incoming cables of alternating current bypass switch,
Another is installed on the feeder ear of exchange output bus, and the data acquisition end of control unit connects I/V converters, electric current respectively
Transformer, exchange turn direct current submodule, direct current and deliver stream submodule and secondary battery unit, and the control end of control unit is connected respectively
Alternating current inlet wire switch, exchange outlet switch, alternating current bypass switch and analog switch.
Control unit according to I/V converters, current transformer, exchange turn direct current submodule, direct current deliver stream submodule and
The voltage and current signal that secondary battery unit is provided is monitored：When control unit monitors some sub-module fault, control
Alternating current inlet wire is switched to be disconnected with outlet switch, closes by-pass switch, now each device is straight by cabinet top ac bus in secondary screen cabinet
Connect power supply.When control unit monitors that alternating current inlet wire loses voltage, then alternating current inlet wire is controlled to switch off；Or bypass
When, alternating current bypass switch is disconnected, exchange outlet switch is closed, now, battery starts electric discharge, passes through DC/AC submodule inversions
It is load supplying in cabinet to export 220V AC powers.When control unit monitors some accumulator failure, corresponding mould is controlled
Plan is switched off, and waits battery to be replaced.
In summary, the utility model provides a kind of distributed AC power supply module for transformer station's prefabricated cabin, will
The AC power that whole prefabricated cabin concentrated on ac panel cabinet originally splits into some AC power supply modules, then according in prefabricated cabin
The need for, it is installed in a distributed manner above the screen cabinet for needing AC power, and described AC power supply module provides for its load
Commutation inversion, alternating current bypass, battery inversion three tunnel exchange stand-by heat output.Advantage is that it is possible to improve secondary device room
Space utilization, saves and takes up an area；Facilitate O＆M, and greatly improve electrical secondary system operational reliability；The utilization rate of battery is significantly
Improve, it is to avoid waste, reduce construction costs.
Brief description of the drawings
Fig. 1 illustrates for the theory structure of the distributed AC power supply module described in the utility model for transformer station's prefabricated cabin
Figure.
Fig. 2 is the distributed AC power supply module described in the utility model for transformer station's prefabricated cabin in prefabricated cabin screen cabinet
Structural representation.
The utility model is described further with reference to embodiment.
Embodiment
Most preferred embodiment：
Referring to the drawings 1,2, for the distributed AC power supply module of transformer station's prefabricated cabin, include alternating current inlet wire switch
K1, exchange turn direct current submodule（AC/DC submodules）, secondary battery unit, alternating current bypass switch K2 and direct current deliver stream submodule
（DC/AC submodules）；If secondary battery unit includes dry battery 1...n；Alternating current inlet wire switch K1 end of incoming cables connection exchange
Civil power（AC220V is inputted）, it is defeated that leading-out terminal accesses 12V direct currents in AC/DC submodules, the output end link block of AC/DC submodules
Go out bus DM, and direct current output bus DM output end is by analog switch MK connection secondary battery units, another output end access
DC/AC submodules, DC/AC submodules are by exchanging the 220V exchange output buses AM that outlet switch K3 access screen cabinets are powered；
Alternating current inlet wire switch K1 end of incoming cables also switchs K2 by alternating current bypass and is connected to exchange output bus AM.
In order to improve operational efficiency, control unit and electric quantity acquisition unit, electric quantity acquisition unit bag are provided with module
I/V converter summation current transformer CT, I/V converters are included（Current/voltage converter）Installed in alternating current bypass switch K2 or
Person's alternating current inlet wire switchs K1 incoming end, and Current Transmit has two, is separately mounted to the incoming end that alternating current bypass switchs K2
（In by-pass branch）With the feeder ear for exchanging output bus AM.Control unit is connected with all parts in module sees Fig. 1
Shown dotted portion, wherein being exported with each switch, including K1, K2, K3 and MK connection for control, other are data prison
Survey collection.When control unit monitors some sub-module fault, control alternating current inlet wire switch K1 and outlet switch K3 disconnects, and closes
Upper by-pass switch K2, now each device is directly powered by cabinet top ac bus in secondary screen cabinet.When control unit monitors exchange
When inlet wire loses voltage, then alternating current inlet wire switch K1 is controlled to disconnect；Or during bypass, disconnect alternating current bypass switch K2, close
Outflow wiretap K3 is submitted, now, battery starts electric discharge, it is cabinet to export 220V AC powers by the inversion of DC/AC submodules
Interior load supplying.When control unit monitors some accumulator failure, control corresponding analog switch MK to disconnect, wait to be replaced
Battery.And upload alarm signal and give monitoring system of electric substation backstage.
As shown in Figure 2, the top of each ac panel cabinet is mounted with described AC power supply module, exchange in prefabricated cabin
Civil power is distributed along cabinet top, in the present embodiment, has 2 servers and 4 interchangers in 1 server cabinet, can share 1 set
220V AC powers, 1 set of AC power supply module is arranged on server cabinet top, while being powered for all devices in cabinet.It is described to hand over
Stream power module directly can be plugged on the AC bus bar of civil power.
The not described part of the utility model is same as the prior art.
Claims (2)
1. the distributed AC power supply module for transformer station's prefabricated cabin, it is characterised in that include alternating current inlet wire switch, exchange
Turn direct current submodule, secondary battery unit, alternating current bypass switch and direct current and deliver stream submodule；The end of incoming cables of alternating current inlet wire switch connects
Electric main is connect, leading-out terminal incoming transport turns direct current submodule, and the output end connection direct current output that exchange turns direct current submodule is female
Line, and the output end of direct current output bus connects secondary battery unit by analog switch, another output end access direct current delivers stream
Submodule, direct current delivers stream submodule and exports bus by exchanging the exchange that outlet switch access screen cabinet is powered；Alternating current inlet wire
The top that the end of incoming cables of switch is also connected to each ac panel cabinet in exchange output bus, prefabricated cabin by alternating current bypass switch is equal
It is mounted with described AC power supply module.
2. the distributed AC power supply module according to claim 1 for transformer station's prefabricated cabin, it is characterised in that also wrap
Control unit, I/V converter summation current transformers are included, I/V converters are voltage collector, and I/V converters are installed on exchange
The end of incoming cables of service entrance switch, current transformer has two, and one is installed on the end of incoming cables of alternating current bypass switch, and another is installed on
The feeder ear of exchange output bus, and the data acquisition end of control unit connects I/V converters, current transformer, exchange respectively
Turn direct current submodule, direct current and deliver stream submodule and secondary battery unit, the control end of control unit connects alternating current inlet wire and opened respectively
Close, exchange outlet switch, alternating current bypass are switched and analog switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720256930.2U CN206517122U (en) | 2017-03-16 | 2017-03-16 | Distributed AC power supply module for transformer station's prefabricated cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720256930.2U CN206517122U (en) | 2017-03-16 | 2017-03-16 | Distributed AC power supply module for transformer station's prefabricated cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517122U true CN206517122U (en) | 2017-09-22 |
Family
ID=59869945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720256930.2U Active CN206517122U (en) | 2017-03-16 | 2017-03-16 | Distributed AC power supply module for transformer station's prefabricated cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063540A (en) * | 2018-01-02 | 2018-05-22 | 清华大学 | Separate excitation starts the cascade submodule power-supply system of self-excitation power supply |
| CN112187026A (en) * | 2020-09-02 | 2021-01-05 | 安徽绿沃循环能源科技有限公司 | Energy storage circuit and energy storage device |
-
2017
- 2017-03-16 CN CN201720256930.2U patent/CN206517122U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063540A (en) * | 2018-01-02 | 2018-05-22 | 清华大学 | Separate excitation starts the cascade submodule power-supply system of self-excitation power supply |
| CN108063540B (en) * | 2018-01-02 | 2024-02-02 | 清华大学 | Separately excited starting self-excited power supply cascading submodule power supply system |
| CN112187026A (en) * | 2020-09-02 | 2021-01-05 | 安徽绿沃循环能源科技有限公司 | Energy storage circuit and energy storage device |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee after: China Electric Power Construction Group Fujian electric survey and Design Institute Co., Ltd. Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 268 Patentee before: Fujian Electric Power Survey and Design Institute |