CN206517121U - Distributed DC power module for transformer station's prefabricated cabin - Google Patents
Distributed DC power module for transformer station's prefabricated cabin Download PDFInfo
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- CN206517121U CN206517121U CN201720256913.9U CN201720256913U CN206517121U CN 206517121 U CN206517121 U CN 206517121U CN 201720256913 U CN201720256913 U CN 201720256913U CN 206517121 U CN206517121 U CN 206517121U
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- submodule
- prefabricated cabin
- inlet wire
- switch
- direct 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 DC power module for transformer station's prefabricated cabin, its structural feature is, includes alternating current inlet wire switch, AC-DC conversion submodule, secondary battery unit and DC boosting submodule；Alternating current inlet wire switchs one end connection electric main, the other end accesses AC-DC conversion submodule, the output end connection direct current output bus of AC-DC conversion submodule, and on the one hand direct current output bus connects secondary battery unit by analog switch, on the other hand DC boosting submodule is accessed, DC boosting submodule is powered by direct current outlet switch access screen cabinet；The top of each direct-current cabinet is mounted with described DC power supplier in prefabricated cabin.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
DC power supplier.
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.
Secondly, palpus whole group is stopped when traditional straight-flow system concentrates complete arrangement, battery service or replacing with batteries
Fortune, not only increases the complexity of O＆M, and interior all secondary devices of standing are while lose backup DC power source, and influence electrical secondary system can
By property.
In addition, primary equipment will not be once upper neat generally in transformer station, second phase, the third stage of the project are often completed after more than ten years.
But in order to which 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 to be given birth to entirely
Order battery utilization rate in periodic process low.And the life of storage battery often only has 5 ~ 7 years service life, even if battery low-load
Also it must regularly replace, waste serious.
Finally, 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.
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 DC 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 DC power module of transformer station's prefabricated cabin, its structural feature is, includes alternating current inlet wire and opens
Pass, AC-DC conversion submodule, secondary battery unit and DC boosting submodule；Alternating current inlet wire switchs one end connection electric main,
The other end accesses AC-DC conversion submodule, the output end connection direct current output bus of AC-DC conversion submodule, and direct current is defeated
Go out bus and secondary battery unit is on the one hand connected by analog switch, on the other hand access DC boosting submodule, DC boosting
Module is powered by direct current outlet switch access screen cabinet；The top of each direct-current cabinet is mounted with described direct current in prefabricated cabin
Power module.
The electric main is 220V AC powers, and it passes through alternating current inlet wire switch access AC-DC conversion 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 DC boosting submodule（DC/DC boosting submodules）, 220V dc sources are exported by DC/DC boosting submodules, finally
Load is exported to cabinet by built-in direct current outlet switch again.When alternating current inlet wire loses voltage, then alternating current inlet wire is switched off,
Secondary battery unit starts electric discharge, is connected to DC/DC boosting submodules via direct current output bus, is exported by DC/DC submodules
220V dc sources are load supplying in cabinet.From operation principle, DC power supplier for its load provide rectifier boost,
Battery boosting two-way exchange stand-by heat output, reliability is greatly improved；It can be needed to configure two sets of direct currents according to equipment in cabinet
Source module, further improves reliability.
So, the dc source for whole prefabricated cabin being concentrated on into direct-current cabinet originally splits into some DC power suppliers,
Then above the screen cabinet for needing dc source according to the need in prefabricated cabin, being installed in a distributed manner, it is effectively utilized prefabricated cabin
Vertical space, thereby eliminating the direct-current cabinet in prefabricated cabin, by increasing capacitance it is possible to increase the design size of secondary device, or save account for
Ground；Further, since battery room is divided into non-interfering secondary battery unit, once there is secondary battery unit failure, also only need
Stop transport its corresponding screen cabinet, be unlikely to so that the secondary device in standing all loses backup DC power source, and it is each straight
Flow the equal independent operating of power module, dispersed placement or is overhauled all without having influence on other at the failure of a certain DC power supplier
The operation of module, therefore not only facilitate O＆M, and greatly improve electrical secondary system operational reliability；Finally, straight-flow system can be with
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 wave
Take, 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 summation current transformer is mounted on the end of incoming cables of alternating current inlet wire switch, and the data acquisition end of control unit connects I/V respectively
Converter, current transformer and secondary battery unit, the control end of control unit connect alternating current inlet wire switch, direct current outlet and opened respectively
Close and analog switch.
The voltage and current signal that control unit is provided according to I/V converters, current transformer and secondary battery unit is carried out
Monitoring, when control unit monitors that alternating current inlet wire loses voltage, then controls alternating current inlet wire to switch off.When control unit monitoring
During to some accumulator failure, control corresponding analog switch to disconnect, wait battery to be replaced.When control unit monitors certain height
During module failure, control alternating current inlet wire switch disconnects with outlet switch, uploads alarm signal and gives monitoring system of electric substation backstage.
In summary, the utility model provides a kind of distributed DC power module for transformer station's prefabricated cabin, will
The dc source that whole prefabricated cabin concentrated on direct-current cabinet originally splits into some DC power suppliers, then according in prefabricated cabin
The need for, it is installed in a distributed manner above the screen cabinet for needing dc source, and described DC power supplier provides for its load
Rectifier boost, battery boosting two-way exchange stand-by heat output.Advantage is that it is possible to improve secondary device room space utilization,
Save and take up an area；Facilitate O＆M, and greatly improve electrical secondary system operational reliability；The utilization rate of battery is greatly improved, it is to avoid
Waste, reduce construction costs.
Brief description of the drawings
Fig. 1 illustrates for the theory structure of the distributed DC power module described in the utility model for transformer station's prefabricated cabin
Figure.
Fig. 2 is the distributed DC power 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 DC power module of transformer station's prefabricated cabin, include alternating current inlet wire switch
AK, AC-DC conversion submodule（AC/DC submodules）, secondary battery unit and DC boosting submodule（DC/DC submodules）；Exchange
Service entrance switch AK incoming ends connect electric main AC220 buses, output end access AC/DC submodules, the output of AC/DC submodules
Hold direct current output bus in link block（DC12V buses）, and on the one hand DC12V buses pass through analog switch MK connection batteries
Unit, on the other hand accesses DC boosting submodule（DC/DC submodules）, DC/DC submodules are connect by direct current outlet switch DK
Enter to shield cabinet and power.
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）Switch AK's installed in alternating current inlet wire
Incoming end, Current Transmit has two, is separately mounted to alternating current inlet wire switch AK incoming end and direct current outlet switch DK
Output end.Control unit is connected dotted portion as shown in Figure 1 with all parts in module, wherein the company with AK, DK and MK
Control output is connected in, other are data monitoring collection, when control unit monitors that alternating current inlet wire loses voltage, then control is handed over
Flow into wiretap disconnection.When control unit monitors some accumulator failure, control corresponding analog switch to disconnect, wait more
Change battery.When control unit monitors some sub-module fault, control alternating current inlet wire switch disconnects with outlet switch, above conveys
Alert signal gives monitoring system of electric substation backstage.
As shown in Figure 2, the top of each direct-current cabinet is mounted with described DC power supplier, exchange in prefabricated cabin
Civil power is distributed along cabinet top, in the present embodiment, and 2 sets of protection devices and 3 sets of measure and control devices are separated between 1 main transformer, organizes two sides
Shield cabinet, two sets of protections need two sets of independent 220V dc sources, 2 sets of DC power suppliers can be arranged on protection cabinet top（A,
B）, respectively two sets protection power supplies.3 sets of measure and control devices can share 1 set of 220V dc source, can arrange 1 set on observing and controlling cabinet top
DC power supplier, while being powered for 3 measure and control devices, it is considered to protection reliability and load, can arrange 2 sets of direct currents on cabinet top
Power module（1,2）, output end parallel connection, is that 3 table apparatus are powered.2 sets of DC power suppliers are standby each other, a set of maintenance, not shadow
Equipment operation in cabinet is rung, reliability is improved.
The not described part of the utility model is same as the prior art.
Claims (2)
1. the distributed DC power module for transformer station's prefabricated cabin, it is characterised in that include alternating current inlet wire switch, hand over straight
Flow transform subblock, secondary battery unit and DC boosting submodule；Alternating current inlet wire switchs one end connection electric main, another termination
Enter AC-DC conversion submodule, the output end connection direct current output bus of AC-DC conversion submodule, and direct current output bus one
Aspect connects secondary battery unit by analog switch, on the other hand access DC boosting submodule, and DC boosting submodule passes through
Direct current outlet switch access screen cabinet is powered；The top of each direct-current cabinet is mounted with described dc source mould in prefabricated cabin
Block.
2. the distributed DC power 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, I/V converters and Current Mutual Inductance
Device is mounted on the end of incoming cables of alternating current inlet wire switch, and to connect I/V converters, electric current respectively mutual at the data acquisition end of control unit
Sensor and secondary battery unit, the control end of control unit connect alternating current inlet wire switch, direct current outlet switch and analog switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720256913.9U CN206517121U (en) | 2017-03-16 | 2017-03-16 | Distributed DC power module for transformer station's prefabricated cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720256913.9U CN206517121U (en) | 2017-03-16 | 2017-03-16 | Distributed DC power module for transformer station's prefabricated cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517121U true CN206517121U (en) | 2017-09-22 |
Family
ID=59869942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720256913.9U Active CN206517121U (en) | 2017-03-16 | 2017-03-16 | Distributed DC power module for transformer station's prefabricated cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380506A (en) * | 2019-07-23 | 2019-10-25 | 国网河南省电力公司经济技术研究院 | A kind of distributed multiple-connected battery system for prefabricated cabin formula unit equipment |
| CN110994754A (en) * | 2019-12-10 | 2020-04-10 | 国网山东省电力公司威海供电公司 | Portable direct current standby power supply |
-
2017
- 2017-03-16 CN CN201720256913.9U patent/CN206517121U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380506A (en) * | 2019-07-23 | 2019-10-25 | 国网河南省电力公司经济技术研究院 | A kind of distributed multiple-connected battery system for prefabricated cabin formula unit equipment |
| CN110994754A (en) * | 2019-12-10 | 2020-04-10 | 国网山东省电力公司威海供电公司 | Portable direct current standby power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |
|
| CP01 | Change in the name or title of a patent holder |