CN207719884U - A kind of movable type AC/DC integrated Power supply alteration load transfer device - Google Patents
A kind of movable type AC/DC integrated Power supply alteration load transfer device Download PDFInfo
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- CN207719884U CN207719884U CN201820066692.3U CN201820066692U CN207719884U CN 207719884 U CN207719884 U CN 207719884U CN 201820066692 U CN201820066692 U CN 201820066692U CN 207719884 U CN207719884 U CN 207719884U
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- Prior art keywords
- load
- load transfer
- cabinet
- bus
- power supply
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Abstract
The utility model provides a kind of mobile AC/DC integrated Power supply alteration load transfer device,AC load shifts three-phase bus in cabinet and connects two stations changes,Alternating current air switch is arranged between becoming in three-phase bus and station,A double power supply automatic switching switch is connected between two alternating current air switchs,Change-over switch,Voltage meter connects and is connected to three-phase bus,Under-voltage replay,Fuse,Exchange alarm terminal block connects and is connected to three-phase bus,AC load, which shifts, is arranged multiple AC load switches inside cabinet,DC load shifts DC bus in cabinet and connects two direct current air switchs,It is separately connected mobile charger and accumulator group,Voltage meter,Under-voltage replay is connected to DC bus,Direct current bus bar connects direct-current insulation monitoring device,Under-voltage replay and direct-current insulation monitoring device are electrically connected with measure and control device,DC load, which shifts, is arranged multiple DC load switches inside cabinet.The transfer of the utility model load is safe and reliable, efficient.
Description
Technical field
The utility model belongs to Transfomer Substation Reconstruction technical field, and in particular to it is a kind of movable type AC/DC integrated power supply change
Make load transfer device.
Background technology
With electric power network technique fast development, Automation of Electric Systems degree be continuously improved, it is required it is also higher and higher, and
Protective relaying device can reliability service, depend on station power of alterating and direct current system reliability.In recent years, with station power use system
The old degree of alternating current-direct current device is continuously increased, and is increasingly aggravated to the AC/DC integrated retrofit work of existing substation.Exist at present
Taken when substation's AC/DC integrated Power supply alteration and alternating current-direct current load is transferred to temporary disk (T-disk), is carried with interim charging unit
For the method for DC power supply.
The 110kV unattended operation transformer stations that DC power system is singly filled for single electricity are carrying out integration using this method
Direct current open circuit, short circuit or earth fault easily occur in transformation process, causes DC power supply to lose, relay equipment can not be transported normally
Row, and cannot find to restore electricity in time, there are major safety risks；It cannot achieve alternating current-direct current load in load transfer process
While shift, cause working efficiency not high；Additionally due to temporary disk (T-disk) is spaced apart quantity limitation, for the substation more than load, no
It can realize single inconvenience for being only spaced apart the single circuit of control, causing in operating.
Notification number is that the patent of CN107069931A discloses a kind of movable transformer pack DC load transfer device, described
Front setting ac input end mouth, accumulator input port and the feeder line output port of babinet, in the inside of babinet, setting is used for
Alternating current becomes the charging module of direct current；The ac input end mouth accesses external AC power, and accumulator input port connects
Enter external storage battery group, feeder line output port provides single channel or multi-channel DC output.It is additionally provided in the front of the babinet
Alternating current air switch for controlling AC power input.It is additionally provided in the front of the babinet defeated for controlling every road feeder line
The feeder switch gone out.The feeder line indicator light for being used to indicate every road feeder line output is additionally provided in the front of the babinet.The invention
Electrical equipment dead electricity in standing when can be transformed to avoid ac and dc systems, improves efficiency and safety, but its scope of application is small,
AC system transformation is cannot be used for, moreover, its power supply mode is single, security reliability is weak.
Invention content
In view of this, a kind of safe and reliable, load transfer efficiency that the utility model in view of the deficiencies of the prior art, provides
Mobile AC/DC integrated Power supply alteration transfer device high and that AC and DC load can be shifted simultaneously.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of movable type AC/DC integrated
Change Power supply alteration load transfer device, including AC load transfer cabinet and DC load shift cabinet, the AC load shifts cabinet
Interior setting three-phase bus, the three-phase bus connect two stations and become, and are arranged between the three-phase bus and station change and hand over
Air switch is flowed, a double power supply automatic switching switch is connected between two alternating current air switchs, the AC load turns
Move cabinet front shell setting voltage meter, change-over switch, three under-voltage replays, the voltage meter, change-over switch series connection
And it is connected to the three-phase bus, the under-voltage replay, fuse, exchange alarm terminal block is in parallel and is connected to described three
Phase busbar, the exchange alarm terminal block are electrically connected a measure and control device, multiple and institute are arranged inside the AC load transfer cabinet
State the AC load switch of three-phase bus electrical connection；
DC bus is arranged in the DC load transfer cabinet inner top, and the DC bus connects two direct current airs and opens
It closing, the DC output end of the mobile charger of the first direct current air switch connection, the second direct current air switch connects accumulator group,
The ac input end of the movable type charger is electrically connected with an AC load switch, and the DC load transfer cabinet is just
Face shell setting voltage meter, DC low-voltage relay, the voltage meter, DC low-voltage relay with the direct current
Busbar is electrically connected, and the direct current bus bar connects direct-current insulation monitoring device, the DC low-voltage relay and described straight
Stream insulating monitor is electrically connected with the measure and control device, and the multiple and direct current is arranged inside the DC load transfer cabinet
The DC load switch of busbar electrical connection.
Preferably, the AC load transfer cabinet and DC load transfer bottom of cabinet portion are respectively provided with the wheel with braking, institute
It states AC load transfer cabinet and DC load transfer cabinet is respectively provided with front and back enabling.
Preferably, the AC load switch and DC load switch equal multi-tier arrangement.
Preferably, partition board is arranged in lower part in the DC load transfer cabinet, and the accumulator group is placed under the partition board.
Preferably, the AC load transfer cabinet and DC load transfer cabinet front are respectively provided with locking handle.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model improves existing load transfer device so that and not only transfer load is safe and reliable for it, and
And can realize that AC and DC load shifts simultaneously, work efficiency is high.Substation's alternating current-direct current transformation process may be implemented in the utility model
In shift alternating current and direct current load simultaneously, save the construction time, reduce station with the ac and dc systems abnormal running time, and energy
Ensure new integration power-supply system integral installation, debugging, there is very high safety and economic benefit, AC load to shift two in cabinet
It stands with the three-phase alternating-current supply for providing 380v is become, two stations connect double power supply automatic switching switch between becoming, may be implemented one
Road work is spare all the way, all the way another way automatic power when dead electricity, improves the reliability of load transfer device, three-phase bus connection
Voltage meter, under-voltage replay, measure and control device, can monitor ac bus voltage condition, and when failure can send out alarm letter
Number and be uploaded to background monitoring, the load that mobile charger ac input end is connected in AC load transfer cabinet is spaced apart, and will
Direct current output is connected to the first direct current air switch in DC load transfer cabinet, and the second direct current air switch is connected to accumulator group,
Accumulator group connect with mobile charger and is in floating charging state when normal operation, and exchange loses, is powered by accumulator,
Ensure that DC load transfer cabinet power supply safety is reliable, there is DC bus connection under-voltage replay anti-exchange to scurry into direct current work(
Energy insulating monitor and measure and control device realize decompression alarm function, improve the power supply reliability of station ac and dc systems, ensure
Electric power netting safe running.
In addition, AC load transfer cabinet and DC load transfer bottom of cabinet portion are respectively provided with the wheel with braking, it can be by cabinet
Body is fixed at one and is moved easily, and the AC load transfer cabinet and DC load transfer cabinet are respectively provided with front and back enabling, are convenient for
The manipulation of the installing and dismounting and device of alternating current-direct current load, AC load switch and DC load switch equal multi-tier arrangement, load
Switchgear distribution is sufficient, can realize that list is only spaced apart the single circuit of control, be applicable to the substation of different voltages grade, accumulator
Group is placed in DC load transfer cabinet, saves space, easy to use, and AC load shifts cabinet and DC load transfer cabinet front
Locking handle is set, ensures the safety operation of load transfer cabinet.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the circuit diagram of the AC load transfer cabinet of the utility model embodiment；
Fig. 3 is the circuit diagram of the DC load transfer cabinet of the utility model embodiment.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained, shall fall within the protection scope of the present invention.
As shown in Fig. 1 ~ 3, a kind of movable type AC/DC integrated Power supply alteration load transfer device, including AC load turn
It moves cabinet 1 and DC load shifts cabinet 2, three-phase bus is set in the AC load transfer cabinet 1, the three-phase bus connects two
It stands with becoming, alternating current air switch is set between the three-phase bus and station change, between two alternating current air switchs
Connect a double power supply automatic switching switch, 1 front shell setting voltage meter 3 of the AC load transfer cabinet, change-over switch
5, three under-voltage replays 4, the voltage meter 3, change-over switch 5 connect and are connected to the three-phase bus, the low electricity
Potential relay 4, fuse, exchange alarm terminal block is in parallel and is connected to the three-phase bus, the exchange alarm terminal block electricity
A measure and control device is connected, multiple AC loads being electrically connected with the three-phase bus, which are arranged, inside the AC load transfer cabinet opens
It closes；
DC bus is arranged in DC load transfer 2 inner top of cabinet, and the DC bus connects two direct current airs and opens
It closes, the DC output end of the first direct current air switch connection movable type charger 7, the second direct current air switch connects accumulator group
11, the ac input end of the movable type charger 7 is electrically connected with an AC load switch, the DC load transfer
Cabinet front shell setting voltage meter 8, DC low-voltage relay 9, the voltage meter 8, DC low-voltage relay 9 with
The DC bus electrical connection, the direct current bus bar connect direct-current insulation monitoring device, the DC low-voltage relay 9
It is electrically connected with the measure and control device with the direct-current insulation monitoring device, the 2 inside setting of DC load transfer cabinet is multiple
The DC load switch being electrically connected with the DC bus.
Specifically, the AC load transfer cabinet 1 and 2 bottom of DC load transfer cabinet are respectively provided with the wheel with braking
12, the AC load transfer cabinet 1 and DC load transfer cabinet 2 are respectively provided with front and back enabling, the AC load switch and direct current
The equal multi-tier arrangement of on-load switch, the DC load shift lower part in cabinet and partition board are arranged, and the accumulator is placed under the partition board
Group 11, the AC load transfer cabinet and DC load transfer cabinet front are respectively provided with locking handle 6.
The mobile AC/DC integrated Power supply alteration load transfer device of the utility model embodiment, friendship to be transferred,
DC load is respectively connected to AC load switch and DC load switch, and AC load transfer cabinet is equipped with two-way exchange air and opens
It closes, is respectively connected to two station low pressure sides, works all the way when normal spare all the way, supervised by voltage meter, under-voltage replay
Test cross stream busbar voltage situation, DC load shift cabinet and are equipped with two-way direct current air switch, and it is straight to be respectively connected to mobile charger
Output end, accumulator group both ends are flowed, direct current is monitored by having direct-current insulation monitoring device, under-voltage replay that anti-exchange is scurried into
Busbar voltage and DC power supply insulation status and straight-flow system scurry into alternating component failure, when above-mentioned AC and DC failure occurs,
Alarm signal is uploaded to measure and control device and is monitored.
During substation's AC/DC integrated Power supply alteration, the present apparatus by cabinet closure, dual power supply design,
The design of alarm function and widely applicable property etc., improves interim power of alterating and direct current power supply safety reliability, realizes simultaneously
It shifts, greatly improves work efficiency while alternating current-direct current load.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (5)
1. a kind of movable type AC/DC integrated Power supply alteration load transfer device, it is characterised in that：It is shifted including AC load
Cabinet and DC load shift cabinet, and three-phase bus is arranged in the AC load transfer cabinet, and the three-phase bus connects two stations and uses
Become, alternating current air switch is set between the three-phase bus and station change, is connected between two alternating current air switchs
One double power supply automatic switching switch, AC load transfer cabinet front shell setting voltage meter, change-over switch, three it is low
Voltage relay, the voltage meter, change-over switch connect and are connected to the three-phase bus, and the under-voltage replay melts
Disconnected device, exchange alarm terminal block is in parallel and is connected to the three-phase bus, and the exchange alarm terminal block is electrically connected observing and controlling dress
It sets, the multiple AC load switches being electrically connected with the three-phase bus of setting inside the AC load transfer cabinet；
DC bus is arranged in the DC load transfer cabinet inner top, and the DC bus connects two direct current air switchs, the
The DC output end of the mobile charger of one direct current air switch connection, the second direct current air switch connects accumulator group, described
The ac input end of mobile charger is electrically connected with an AC load switch, and the DC load transfer cabinet front is outer
Shell is arranged voltage meter, DC low-voltage relay, the voltage meter, DC low-voltage relay with the DC bus
Electrical connection, the direct current bus bar connect direct-current insulation monitoring device, and the DC low-voltage relay and the direct current are exhausted
Edge supervisory device is electrically connected with the measure and control device, and the multiple and DC bus is arranged inside the DC load transfer cabinet
The DC load of electrical connection switchs.
2. movable type AC/DC integrated Power supply alteration load transfer device as described in claim 1, it is characterised in that：It is described
AC load shifts cabinet and DC load transfer bottom of cabinet portion is respectively provided with the wheel with braking, the AC load transfer cabinet and straight
Stream load transfer cabinet is respectively provided with front and back enabling.
3. movable type AC/DC integrated Power supply alteration load transfer device as claimed in claim 2, it is characterised in that：It is described
AC load switchs and DC load switchs equal multi-tier arrangement.
4. movable type AC/DC integrated Power supply alteration load transfer device as claimed in claim 3, it is characterised in that：It is described
DC load shifts lower part in cabinet and partition board is arranged, and the accumulator group is placed under the partition board.
5. movable type AC/DC integrated Power supply alteration load transfer device as described in claim 1 or 4, it is characterised in that：
The AC load transfer cabinet and DC load transfer cabinet front are respectively provided with locking handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820066692.3U CN207719884U (en) | 2018-01-16 | 2018-01-16 | A kind of movable type AC/DC integrated Power supply alteration load transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820066692.3U CN207719884U (en) | 2018-01-16 | 2018-01-16 | A kind of movable type AC/DC integrated Power supply alteration load transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207719884U true CN207719884U (en) | 2018-08-10 |
Family
ID=63052143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820066692.3U Expired - Fee Related CN207719884U (en) | 2018-01-16 | 2018-01-16 | A kind of movable type AC/DC integrated Power supply alteration load transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207719884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122927A (en) * | 2021-12-03 | 2022-03-01 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Temporary power supply transfer box for communication load |
-
2018
- 2018-01-16 CN CN201820066692.3U patent/CN207719884U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122927A (en) * | 2021-12-03 | 2022-03-01 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Temporary power supply transfer box for communication load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20190116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |