CN207926263U - Switchgear assembly with alternative DC control supply - Google Patents
Switchgear assembly with alternative DC control supply Download PDFInfo
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- CN207926263U CN207926263U CN201820257479.0U CN201820257479U CN207926263U CN 207926263 U CN207926263 U CN 207926263U CN 201820257479 U CN201820257479 U CN 201820257479U CN 207926263 U CN207926263 U CN 207926263U
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Abstract
The utility model discloses a kind of switchgear assemblies with alternative DC control supply, include the control power supply (1) being connected with short-circuit protection (3) and stand-by power supply (2), the short-circuit protection (3) being connected with control power supply (1) and stand-by power supply (2), it is connected with control power supply (1) and stand-by power supply (2) for when the power supply system of switchgear assembly can not be switched to stand-by power supply (2) circuit switching device (4) by control power supply (1) when normal power supply by control power supply (1), the operating status test device (5) being connected with circuit switching device (4) and the switch controlling device (6) being connected with test device (5).The utility model can carry out the repair and maintenance of control power supply in the case where ensureing switchgear assembly normal use, improve stability and the safety of switchgear assembly, while not influence the normal use of downstream user in repair, maintenance control power supply.
Description
Technical field
The utility model is related to for distributing electric energy and controlling the electric equipment field of electric energy, and in particular to one kind has alternative
The switchgear assembly of DC control supply.
Background technology
Switchgear assembly is a kind of electric equipment distributed electric energy and control electric energy, some are that outside line is introduced into master control in cabinet
Switch, subsequently into sub-control switch, each branch, which is set according to its needs, distributes to power load.Such as：Measuring instrumentss automatically control,
Motor magnetic switch, various A.C. contactors etc., switchgear assembly is divided according to voltage class：There is high pressure complete switch to set
It is standby, in be pressed into complete equipment and low-voltage complete switch equipment.Some in these equipment are to divide difference again according to builtin voltage grade
Cell.Voltage switchgear is the combination for containing the spare and accessory parts involved by all voltage switchgears.
Switchgear assembly be it is a kind of be widely used in various distribution electric energy and control electric energy place, in these applications
Many switchgear assemblies control power supply mostly uses the external scheme fed, and be straight to ensure its reliability in the middle
Galvanic electricity source does not have too big problem routinely, the general external power supply fed after 5 years in the rigid 1-5 that starts of these equipment investments
The different degrees of aging of meeting outlet, needs repairing, safeguards, these equipment face following problem at this time：
1) in repair, maintenance control power supply, switchgear assembly opens complete power supply out of hand to lose
Close the control ability of equipment.It is minimum that cause is directly reduced to the protective value of equipment in this way, it is below to equipment control to be related to operating
The life of personnel rises to safely maximum.The serious dangerous situation for easilying lead to explosion and fire.
2) switchgear assembly causes to have a power failure and can cause unnecessary damage to the client in downstream in repair, maintenance control
It loses.
It 3), cannot be normal so as to cause many repair times because electricity consumption downstream client can be influenced in view of interruption maintenance
In working day so that the increase of maintenance cost.
Utility model content
The utility model is that in repair, maintenance control power supply, switchgear assembly will lose in the prior art in order to overcome
The problems such as controlling power supply and influencing the protection on equipment and influence the normal use of downstream user, providing one kind has alternatively directly
The switchgear assembly of flow control power supply can carry out control power supply in the case where ensureing switchgear assembly normal use
Repair and maintenance improve stability and the safety of switchgear assembly, while not being influenced in repair, maintenance control power supply
The normal use of downstream user.
Switchgear assembly provided by the utility model with alternative DC control supply, including：
Control power supply：It is connected with short-circuit protection, for providing electric power for test device and control device；
Stand-by power supply：It is connected with short-circuit protection, for being test device and control when controlling power supply and breaking down
Device provides electric power；
Short-circuit protection：It is connected with control power supply and stand-by power supply, for automatically cutting off control when short circuit occurs in circuit
Power supply and stand-by power supply processed；
Circuit switching device：With control power supply and stand-by power supply be connected, for when control power supply can not normal power supply when, general
The power supply system of switchgear assembly switches to stand-by power supply by control power supply；
Test device：It is connected with circuit switching device, the operating status for detecting primary system；
Switch controlling device：It is connected with test device, the detecting state for controlling test device.
Electric power is provided by control power supply when complete set of equipments normal use, when needs are repaired or safeguarded to control power supply
When, control power supply is switched to stand-by power supply automatically and continues as complete set of equipments by circuit switching device provides electric power, ensures at being arranged
Standby continuous service.
A kind of logical switchgear assembly described in the utility model, it is preferred that, test device includes being arranged in parallel
Current foldback circuit, current measurement circuit, tension measuring circuit, protection circuit and control circuit.
A kind of logical switchgear assembly described in the utility model, it is preferred that, current measurement circuit by three groups simultaneously
The test group composition of connection setting, test group includes the current transformer and ammeter being arranged in series.
A kind of logical switchgear assembly described in the utility model, it is preferred that, tension measuring circuit includes three groups
The fuse and voltmeter being arranged in parallel.
A kind of logical switchgear assembly described in the utility model, it is preferred that, protection circuit includes high temperature alarm
Circuit and overtemperature trip circuit.
A kind of logical switchgear assembly described in the utility model, it is preferred that, control circuit includes breaker storage
It can location circuit, breaker closing status circuit, breaker open operation status circuit and remote control combined floodgate circuit.
The utility model in use, when complete set of equipments normal use by control power supply be test device and switch
Control device provides electric power, and when needing that control power supply is repaired or safeguarded, circuit switching device will control power supply automatically
It switches to stand-by power supply and test device and switch controlling device offer electric power is provided, ensure the continuous service of complete set of equipments.
The utility model on switchgear assembly due to being equipped with stand-by power supply and for control power supply and stand-by power supply
The circuit switching device for carrying out power supply switching, when needing that control power supply is repaired or safeguarded, circuit switching device can
Automatically control power supply is switched to that stand-by power supply continues as test device and switch controlling device provides electric power, switching time is less than
100mS ensures the continuous service of complete set of equipments；Interruption maintenance is not needed in repair, maintenance control power supply simultaneously, will not be made
The increase of maintenance cost at double.It is effective to save worker's construction time, working efficiency is improved, providing stable electricity consumption for enterprise protects
Barrier.
Description of the drawings
Fig. 1 is the schematic diagram of the switchgear assembly with alternative DC control supply；
Fig. 2 is the test device schematic diagram of the switchgear assembly with alternative DC control supply.
Reference numeral：
1, power supply is controlled；2, stand-by power supply；3, short-circuit protection；4, circuit switching device；5, test device；51, mistake
Stream protection circuit；52, current measurement circuit；53, tension measuring circuit；54, circuit is protected；541, high temperature alarm circuit；542、
Overtemperature trip circuit；55, control circuit；551, energy storage position circuit；552, breaker closing status circuit；553, breaker point
Lock status circuit；554, it is remotely controlled combined floodgate circuit；6, switch controlling device.
Specific implementation mode
Embodiment 1
As shown in Figs. 1-2, a kind of switchgear assembly with alternative DC control supply, including：
Control power supply 1：It is connected with short-circuit protection 3, for providing electric power for test device 5 and control device 6；
Stand-by power supply 2：It is connected with short-circuit protection 3, for being 5 He of test device when controlling power supply 1 and breaking down
Control device 8 provides electric power；
Short-circuit protection 3：It is connected with control power supply 1 and stand-by power supply 2, for being automatically cut off when short circuit occurs in circuit
Control power supply 1 and stand-by power supply 2；
Circuit switching device 4：It is connected with control power supply 1 and stand-by power supply 2, it can not normal power supply for working as control power supply 1
When, the power supply system of switchgear assembly is switched into stand-by power supply 2 by control power supply 1；
Test device 5：It is connected with circuit switching device 4, the operating status for detecting primary system；Test fills 5 and includes
Current foldback circuit 51, current measurement circuit 52, tension measuring circuit 53, protection circuit 54 and the control circuit being arranged in parallel
55；
Wherein, the test group that current measurement circuit 52 is arranged in parallel by three groups forms, and test group includes the electricity being arranged in series
Current transformer and ammeter；Tension measuring circuit 53 includes three groups of fuses and voltmeter being arranged in parallel；Circuit 54 is protected to wrap
Include high temperature alarm circuit 541 and overtemperature trip circuit 542；Control circuit 55 includes breaker energy storage location circuit 551, breaker
"on" position circuit 552, breaker open operation status circuit 553 and remote control combined floodgate circuit 554；
Switch controlling device 6：It is connected with test device 5, the detecting state for controlling test device 5.
The present embodiment is in use
1) when+KM1 ,-KM1 control power supply 1 and normal+KM1 ' ,-KM1 ' stand-by power supply 2 ,+KM1 ,-KM1 control power supply 1
By QF1, KM1 coil power supplies, KM1 coils is given to obtain electric, the normally opened contact connection of KM1, the normally-closed contact disconnection of KM1；+KM1’、-
KM1 ' stand-by power supplies 2 reach KM1 normally-closed contacts by the "on" position of QF1 ', because+KM1 ,-KM1 control 1 power supply of power supply are normal,
KM1 works, and+KM1 ' ,-KM1 ' stand-by power supply 2 disconnects after the "on" position of QF1 ' at the normally closed nodes of KM1, in product
Test device 5 and switch controlling device 6 control 1 normal power supply of power supply by+KM1 ,-KM1.
2) when+KM1 ,-KM1 control power supply 1 are abnormal and+KM1 ' ,-KM1 ' stand-by power supply 2 is normal, i.e. QF1 closes a floodgate,
KM1 coils do not work, and the normally opened contact and normally-closed contact of KM1 are not converted；+ KM1 ' ,-KM1 at this time ' stand-by power supply 2 passes through QF1 ',
Because KM1 coils must not be electric, normally opened, the normally-closed contact of KM1 are not converted, and the normally-closed contact of KM1 is still closed, and are touched by KM1 is normally closed
Point, the test device 5 and switch controlling device 6 in product are by+KM1 ' ,-KM1 ' 2 normal power supply of stand-by power supply.
3) when+KM1 ,-KM1 control power supply 1 are abnormal and+KM1 ' ,-KM1 ' stand-by power supply 2 is normal, the test in product
Device 5 and switch controlling device 6 are by+KM1 ' ,-KM1 ' 2 normal power supply of stand-by power supply, when+KM1 ,-KM1 control power supply 1 restore just
Chang Shi, circuit are restored to 1) principle execution.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, in the case where not departing from spirit and scope defined by claim, any modification, variation or the equivalent shape that can make
Formula is fallen within the protection domain of utility model.
Claims (6)
1. a kind of switchgear assembly with alternative DC control supply, it is characterised in that：Including：
Control power supply (1)：It is connected with short-circuit protection (3), for providing electric power for test device (5) and control device (6)；
Stand-by power supply (2)：It is connected with the short-circuit protection (3), for being institute when the control power supply (1) is broken down
It states test device (5) and the control device (6) provides electric power；
Short-circuit protection (3)：It is connected with the control power supply (1) and the stand-by power supply (2), for there is short circuit in circuit
When automatically cut off the control power supply (1) and the stand-by power supply (2)；
Circuit switching device (4)：It is connected with the control power supply (1) and the stand-by power supply (2), for working as the control power supply
(1) can not normal power supply when, the power supply system of the switchgear assembly is switched to by the control power supply (1) described spare
Power supply (2)；
Test device (5)：It is connected with the circuit switching device (4), the operating status for detecting primary system；
Switch controlling device (6)：It is connected with the test device (5), the detecting state for controlling the test device (5).
2. the switchgear assembly according to claim 1 with alternative DC control supply, it is characterised in that：The survey
Trial assembly sets (5) and includes the current foldback circuit (51) being arranged in parallel, current measurement circuit (52), tension measuring circuit (53), protects
Protection circuit (54) and control circuit (55).
3. the switchgear assembly according to claim 2 with alternative DC control supply, it is characterised in that：The electricity
The test group that flow measurement circuitry (52) is arranged in parallel by three groups forms, the test group include the current transformer that is arranged in series and
Ammeter.
4. the switchgear assembly according to claim 2 with alternative DC control supply, it is characterised in that：The electricity
It includes three groups of fuses and voltmeter being arranged in parallel to press measuring circuit (53).
5. the switchgear assembly according to claim 2 with alternative DC control supply, it is characterised in that：The guarantor
Protection circuit (54) includes high temperature alarm circuit (541) and overtemperature trip circuit (542).
6. the switchgear assembly according to claim 2 with alternative DC control supply, it is characterised in that：The control
Circuit (55) processed includes breaker energy storage location circuit (551), breaker closing status circuit (552), breaker open operation state
Circuit (553) and remote control combined floodgate circuit (554).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257479.0U CN207926263U (en) | 2018-02-13 | 2018-02-13 | Switchgear assembly with alternative DC control supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257479.0U CN207926263U (en) | 2018-02-13 | 2018-02-13 | Switchgear assembly with alternative DC control supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926263U true CN207926263U (en) | 2018-09-28 |
Family
ID=63600435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820257479.0U Active CN207926263U (en) | 2018-02-13 | 2018-02-13 | Switchgear assembly with alternative DC control supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207926263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818421A (en) * | 2019-04-01 | 2019-05-28 | 安徽九翔信息科技有限责任公司 | A kind of computer monitoring power protection system |
-
2018
- 2018-02-13 CN CN201820257479.0U patent/CN207926263U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818421A (en) * | 2019-04-01 | 2019-05-28 | 安徽九翔信息科技有限责任公司 | A kind of computer monitoring power protection system |
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