CN110571916A - 0.4kV double-power switching device and switch - Google Patents
0.4kV double-power switching device and switch Download PDFInfo
- Publication number
- CN110571916A CN110571916A CN201910932884.7A CN201910932884A CN110571916A CN 110571916 A CN110571916 A CN 110571916A CN 201910932884 A CN201910932884 A CN 201910932884A CN 110571916 A CN110571916 A CN 110571916A
- Authority
- CN
- China
- Prior art keywords
- power supply
- switch
- common power
- voltage
- standby
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The application provides a 0.4kV dual supply auto-change over device and switch, the device includes: the acquisition unit is used for acquiring voltage values of the two paths of power supplies and current values of the two paths of power supplies, wherein the two paths of power supplies comprise a common power supply and a standby power supply; the controller is used for controlling a switch of the common power supply to execute an overcurrent protection action and simultaneously lock a switching action when the current value of the common power supply exceeds a preset operation current limit value; and/or the controller is used for controlling the switch of the common power supply and the switch of the standby power supply to execute switching action when the voltage value of the common power supply exceeds a preset voltage limit value.
Description
Technical Field
the application relates to the technical field of electric power, and particularly provides a 0.4kV dual-power switching device and a switch.
Background
in modern high and new technology industries, such as semiconductor manufacturing, automobile manufacturing and the like, and important power loads, such as national important meeting places, important servers and the like, the requirement on power supply reliability is high, and one-time voltage drop or power loss can cause the production line, the control system to stop working normally, important data to be lost, huge economic loss is caused, and social public order is seriously disordered. In order to avoid the influence of the voltage drop and the fault of the power grid on the power supply continuity of the load, a dual-power supply mode with a backup power supply is often adopted.
The existing dual power supply scheme mainly adopts a solid state transfer switch SSTS based on a thyristor technology. The device utilizes modern power electronic technology and measurement and control technology based on microprocessor and digital signal processing to realize the uninterrupted power supply of the load. The switching time is generally less than 10ms, and the power supply requirement of sensitive loads can be met.
However, as the core components are power electronic elements, the stability requirement is high, the control logic is complex, and the failure rate is high. Meanwhile, the loss of the valve body in the operation process generates a large amount of heat, the requirement on ventilation and heat dissipation of the body is high, the application environment is also required to be high, and otherwise the service life of equipment is influenced. In addition, SSTS is still not made in China at present, and is mainly imported, so that the cost is high.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present application provides a 0.4kV dual power switching device and a switch.
In a first aspect, the present application provides a 0.4kV dual power switching device, including: the acquisition unit is used for acquiring voltage values of the two paths of power supplies and current values of the two paths of power supplies, wherein the two paths of power supplies comprise a common power supply and a standby power supply; the controller is used for controlling a switch of the common power supply to execute an overcurrent protection action and simultaneously lock a switching action when the current value of the common power supply exceeds a preset running current limit value; and/or the controller is used for controlling the switch of the common power supply and the switch of the standby power supply to execute switching action when the voltage value of the common power supply exceeds a preset voltage limit value.
In some embodiments, the switching action includes a manual mode, a self-throw self-reset mode, a self-throw hand-reset mode, and a mutual standby mode.
In some embodiments, when the controller executes the manual mode, a switch of the common power supply is manually operated to open or close; and/or, manually operating the switch of the standby power supply to open or close; and/or the switch of the common power supply and the switch of the standby power supply are/is manually operated to be opened.
in some embodiments, when the controller executes the auto-switching and auto-resetting mode, when it is detected that the voltage of the common power supply drops, the duration time of the drop is longer than a first preset time, and the standby power supply has voltage, the controller controls the switch of the common power supply to automatically open and close; and when the voltage recovery of the common power supply is detected, and the recovery time is continuously longer than a second preset time, controlling the switch of the standby power supply to automatically open and simultaneously controlling the switch of the common power supply to automatically close.
In some embodiments, when the controller executes a self-commissioning resetting mode, when detecting that the power supply of the common power supply is under-voltage, the duration time of the under-voltage is greater than a third preset time, and the standby power supply has a voltage, the controller controls the switch of the common power supply to automatically open and close; and when the recovery of the power supply of the common power supply is detected, the recovery duration is longer than fourth preset time, and meanwhile, the standby power supply has pressure, the switch of the common power supply is controlled to be automatically switched on, and meanwhile, the switch of the standby power supply is manually switched off.
In some embodiments, when the controller executes a mutual standby mode, when detecting that a power supply of the common power supply is under-voltage, the duration of the under-voltage is greater than a fifth preset time, and the standby power supply has a voltage, the controller controls a switch of the common power supply to automatically open and close; when the situation that the power supply of the standby power supply is under-voltage is detected, the duration time of the under-voltage is longer than sixth preset time, and meanwhile the common power supply has voltage, the switch of the standby power supply is controlled to be automatically switched off, and meanwhile, the switch of the common power supply is controlled to be automatically switched on.
In a second aspect, the present application provides a 0.4kV dual-power-supply changeover switch, including the 0.4kV dual-power-supply changeover device, the first switch and the second switch described in the first aspect; the first switch is connected with a common power supply, the second switch is connected with a standby power supply, and the first switch and the second switch are both connected with the 0.4kV double-power-supply switching device.
In some embodiments, the first switch is connected to the controller and the second switch is connected to the controller; the first switch comprises a first coil and a first vacuum bulb, the first coil and the first vacuum bulb are connected through a first pull rod, the number of the first pull rods is two, the two first pull rods are connected through a first insulator, one first pull rod is connected with the first vacuum bulb, and the other first pull rod is connected with the first coil; the second switch includes second coil and second vacuum bubble, the second coil with the second vacuum bubble passes through the second pull rod and connects, the second pull rod includes two, two connect through the second insulator between the second pull rod, one the second pull rod with the second vacuum bubble is connected, another the second pull rod with the second coil is connected.
In some embodiments, the energy storage device further comprises a first capacitor and a second capacitor, wherein the first capacitor is respectively arranged at the first coil and the second coil and used for storing energy when the first switch and/or the second switch is opened or closed; the second capacitors are respectively arranged at the first vacuum bubble and the second vacuum bubble and used for manual zero setting when the first switch and/or the second switch is opened or closed.
in some embodiments, a latching mechanism is further included, the latching mechanism being disposed at the first switch and the second switch, respectively.
In a third aspect, an embodiment of the present application provides a 0.4kV dual power switching method, which is applied to the 0.4kV dual power switching device in the first aspect, and/or applied to the 0.4kV dual power switching switch in the second aspect, and includes: collecting voltage values of two power supplies and current values of the two power supplies, wherein the two power supplies comprise a common power supply and a standby power supply; when the current value of the common power supply exceeds a preset operation current limit value, controlling a switch of the common power supply to execute an overcurrent protection action, and locking a switching action at the same time; and/or when the voltage value of the common power supply exceeds a preset voltage limit value, controlling a switch of the common power supply to execute a switching action.
In the 0.4kV dual power supply switching device and the switch that this application embodiment provided, adopt the high-speed circuit breaker of quick vortex drive technique, shorten switch body action time, adopt artifical zero passage technique simultaneously, reduce switching in-process mechanism action time, finally realize the fast switch-over between the dual power supply in 8ms, when guaranteeing that sensitive load breaks down at last level power, in time change the confession to supply the in-process not outage, guarantee the power supply continuity changing.
Drawings
Fig. 1 is a schematic structural diagram of a 0.4kV dual power switching device provided in an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a 0.4kV dual power transfer switch provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a switch provided in an embodiment of the present application;
fig. 4 is a schematic flowchart of a 0.4kV dual power switching method provided in an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
fig. 1 shows a 0.4kV dual power switching device provided by an embodiment of the application.
As shown in fig. 1, the apparatus includes an acquisition unit 100 and a controller 200.
the acquisition unit 100 is configured to acquire voltage values of two power supplies and current values of the two power supplies, where the two power supplies include a common power supply and a standby power supply; the controller 200 is configured to control a switch of the common power supply to perform an overcurrent protection action and simultaneously lock a switching action when a current value of the common power supply exceeds a preset operating current limit; and/or the controller is used for controlling the switch of the common power supply and the switch of the standby power supply to execute switching action when the voltage value of the common power supply exceeds a preset voltage limit value.
The voltage values of the two power sources and the current values of the two power sources acquired by the acquisition unit 100 may specifically include currents of the two power sources at the incoming line side and the outgoing line side, and the voltage values of the two power sources at the incoming line side and the outgoing line side, and the acquisition unit 100 sends acquired data to the controller 200.
the controller 200 controls the switching operation of the switch according to the data collected by the collecting unit 100.
It should be noted that, when the current value of the common power supply exceeds the preset operation current limit value, the fault state at this time is an intra-area fault; when the voltage value of the common power supply exceeds the preset voltage limit value, the fault state at the moment is an out-of-range fault.
When an in-zone fault occurs, a near-zone short circuit occurs at the lower opening of the switch of the common power supply, the current value of the common power supply exceeds a preset running current limit value, the switch of the common power supply is controlled to execute overcurrent protection action, and meanwhile, the switching action is locked, so that the expansion of the fault range can be avoided.
When an out-of-range fault occurs, the upper port of a fast switch of the common power supply or a superior power supply of a power grid has a short-circuit fault, so that voltage drop is caused, the voltage value of the common power supply exceeds a preset voltage limit value, and the switch of the common power supply is controlled to execute switching action.
in some embodiments, the controller controls the switch to perform the switching operation, and the switching operation includes a manual mode, a self-switching and self-resetting mode, and a mutual standby mode.
Further, when the controller executes a manual mode, a switch of the common power supply is manually operated to open or close; and/or, manually operating the switch of the standby power supply to open or close; and/or, the switch of the common power supply and the switch of the standby power supply are manually operated to be separated.
For example, Qn is a switch of a normal power supply, Qr is a switch of a standby power supply, and the initial operation state is Qn closing and Qr opening, and Qn opening and Qr closing are realized by manual operation.
further, the controller does not detect fault current, namely the current value of the common power supply does not exceed the preset operation current limit, and the controller executes a self-switching and self-resetting mode.
Specifically, when the voltage drop of the common power supply is detected, the duration time of the drop is longer than a first preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to be automatically switched off, and meanwhile, the switch of the standby power supply is controlled to be automatically switched on; and when the voltage recovery of the common power supply is detected, and the recovery time is continuously longer than the second preset time, controlling the switch of the standby power supply to automatically open and close.
further, the controller does not detect fault current, namely the current value of the common power supply does not exceed the preset operation current limit, and the controller executes the self-commissioning resetting mode.
Specifically, when the power supply undervoltage of the common power supply is detected, the undervoltage duration is longer than a third preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to be automatically switched off, and meanwhile, the switch of the standby power supply is controlled to be automatically switched on; and when detecting that the power supply of the common power supply is recovered, wherein the recovery duration time is longer than the fourth preset time, and the standby power supply has pressure, controlling the switch of the common power supply to be automatically switched on, and simultaneously, manually switching off the switch of the standby power supply.
Further, the controller does not detect the fault current, that is, the current value of the common power supply does not exceed the preset operation current limit, and the controller executes the mutual standby mode.
Specifically, when the power supply undervoltage of the common power supply is detected, the duration time of the undervoltage is longer than the fifth preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to be automatically switched off, and meanwhile, the switch of the standby power supply is controlled to be automatically switched on; when the power supply of the standby power supply is detected to be under-voltage, the duration time of the under-voltage is longer than the sixth preset time, and the common power supply has voltage, the switch of the standby power supply is controlled to be automatically switched off, and meanwhile, the switch of the common power supply is controlled to be automatically switched on.
fig. 2 shows a 0.4kV dual power transfer switch provided by the embodiment of the application.
As shown in fig. 2, the 0.4kV dual power source switch includes a 0.4kV dual power source switch 203, a first switch 204 and a second switch 206, wherein the first switch 204 is connected to the common power source 201, the second switch 206 is connected to the standby power source 202, and both the first switch 204 and the second switch 206 are connected to the 0.4kV dual power source switch 203.
As shown in fig. 3, in some embodiments, the first switch 204 and the second switch 206 are connected to the controller 205, wherein the first switch 204 includes a first coil and a first vacuum bulb 2041, and further includes a first pull rod 2042 and a first insulator 2043, and the first coil includes a first opening coil 2044 and a first closing coil 2045. The two first pull rods 2042 are connected through a first insulator 2043, one first pull rod 2042 is connected with the first vacuum bulb 2041, and the other first pull rod 2042 is connected with the first switching-off coil 2044 and the first switching-on coil 2045 respectively to realize switching-off and switching-on. The second switch 206 includes a second coil and a second vacuum bulb, and further includes a second pull rod and a second insulator, where the second coil includes a second opening coil and a second closing coil. The two second pull rods are connected through a second insulator, one second pull rod is connected with the second vacuum bulb, and the other second pull rod is connected with the second switching-off coil and the second switching-on coil respectively to realize switching-off and switching-on.
In some embodiments, the 0.4kV dual-power-supply changeover switch further includes a first capacitor 2046 and a second capacitor 2047, where the first capacitor 2046 is disposed at the first opening coil 2044 and the first closing coil 2045 of the first coil, respectively, and the second opening coil and the second closing coil of the second coil, respectively, for storing energy when the first switch 204 and/or the second switch 206 is opened or closed.
the second capacitor 2047 is disposed at the first vacuum bubble 2041 and the second vacuum bubble, respectively, and is used for manual zero setting when the first switch 204 and/or the second switch 206 is opened or closed.
In some embodiments, the 0.4kV dual power transfer switch may further have a three-stage protection function, and the protection function may be selectively turned on or off, and may break a load side ground or a short-circuit fault.
In some embodiments, the 0.4kV dual-power-supply changeover switch further includes a locking mechanism 207, which is respectively disposed at the first switch 204 and the second switch 206, and is configured to prohibit the first switch 204 and the second switch 206 from being simultaneously closed, so as to avoid loop-closing operation of the two power supplies.
This application adopts 0.4kV high-speed circuit breaker based on quick eddy current drive technique, as switch of power switch commonly used and stand-by power supply switch respectively, is connected with the independent external power of two tunnel higher levels, and first switch 204 and second switch 206 adopt the vacuum arc extinguishing mode, shorten the action time of two tunnel power switching in-process switch body, can realize within 2ms quick separating brake, within 3ms quick combined floodgate.
Fig. 4 shows a 0.4kV dual power switching method provided by the embodiment of the application.
As shown in fig. 4, the method comprises the steps of:
step 501, collecting voltage values of two power supplies and current values of two power supplies, wherein the two power supplies comprise a common power supply and a standby power supply.
And 502, when the current value of the common power supply exceeds a preset running current limit value, controlling a switch of the common power supply to execute an overcurrent protection action, and locking a switching action at the same time.
And step 503, when the voltage value of the frequently-used power supply exceeds the preset voltage limit value, controlling a switch of the frequently-used power supply to execute a switching action.
In some embodiments, the switching action includes a manual mode, a self-switching and self-resetting mode, and a mutual standby mode.
in some embodiments, when the controller executes the manual mode, the switch of the common power supply is manually operated to open or close; and/or, manually operating the switch of the standby power supply to open or close; and/or, the switch of the common power supply and the switch of the standby power supply are manually operated to be separated.
In some embodiments, when the controller executes a self-switching and self-resetting mode, when detecting that a voltage drop occurs in the common power supply, the duration of the drop is longer than a first preset time, and the standby power supply has a voltage, controlling the switch of the common power supply to automatically open and close; and when the voltage recovery of the common power supply is detected, and the recovery time is continuously longer than the second preset time, controlling the switch of the standby power supply to automatically open and close.
In some embodiments, when the controller executes the self-commissioning resetting mode, when the power supply undervoltage of the common power supply is detected, the duration of the undervoltage is longer than a third preset time, and the standby power supply has a voltage, the controller controls the switch of the common power supply to automatically open and close; and when detecting that the power supply of the common power supply is recovered, wherein the recovery duration time is longer than the fourth preset time, and the standby power supply has pressure, controlling the switch of the common power supply to be automatically switched on, and simultaneously, manually switching off the switch of the standby power supply.
In some embodiments, when the controller executes the mutual standby mode, when detecting that the power supply of the common power supply is under-voltage, the duration time of the under-voltage is greater than the fifth preset time, and the standby power supply has voltage, the controller controls the switch of the common power supply to be automatically switched off, and controls the switch of the standby power supply to be automatically switched on; when the power supply of the standby power supply is detected to be under-voltage, the duration time of the under-voltage is longer than the sixth preset time, and the common power supply has voltage, the switch of the standby power supply is controlled to be automatically switched off, and meanwhile, the switch of the common power supply is controlled to be automatically switched on.
the above description is only a specific embodiment of the present application, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (10)
1. A0.4 kV dual power supply switching device is characterized by comprising:
The acquisition unit is used for acquiring voltage values of the two paths of power supplies and current values of the two paths of power supplies, wherein the two paths of power supplies comprise a common power supply and a standby power supply;
The controller is used for controlling a switch of the common power supply to execute an overcurrent protection action and simultaneously lock a switching action when the current value of the common power supply exceeds a preset running current limit value;
and/or the controller is used for controlling the switch of the common power supply and the switch of the standby power supply to execute switching action when the voltage value of the common power supply exceeds a preset voltage limit value.
2. The 0.4kV dual power switching device according to claim 1, wherein the switching action comprises a manual mode, a self-switching and self-resetting mode, and a mutual standby mode.
3. The 0.4kV dual power switching device according to claim 2, wherein when the controller executes the manual mode,
Manually operating the switch of the common power supply to open or close; and/or the presence of a gas in the gas,
Manually operating the switch of the standby power supply to open or close; and/or the presence of a gas in the gas,
and manually operating the switch of the common power supply and the switch of the standby power supply to open.
4. the 0.4kV dual power switching device according to claim 2, wherein when the controller executes the self-throw self-reset mode,
When the voltage drop of the common power supply is detected, the duration time of the drop is longer than a first preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to automatically open and close, and meanwhile, the switch of the standby power supply is controlled to automatically close;
And when the voltage recovery of the common power supply is detected, and the recovery time is continuously longer than a second preset time, controlling the switch of the standby power supply to automatically open and simultaneously controlling the switch of the common power supply to automatically close.
5. The 0.4kV dual power switching device according to claim 2, wherein when the controller executes a self-commissioning return mode,
When the power supply undervoltage of the common power supply is detected, the undervoltage duration is longer than a third preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to be automatically switched off, and the switch of the standby power supply is controlled to be automatically switched on;
And when the recovery of the power supply of the common power supply is detected, the recovery duration is longer than fourth preset time, and meanwhile, the standby power supply has pressure, the switch of the common power supply is controlled to be automatically switched on, and meanwhile, the switch of the standby power supply is manually switched off.
6. the 0.4kV dual power switching device according to claim 2, wherein when the controllers execute a mutual standby mode,
When the power supply undervoltage of the common power supply is detected, the undervoltage duration is longer than a fifth preset time, and the standby power supply has voltage, the switch of the common power supply is controlled to be automatically switched off, and the switch of the standby power supply is controlled to be automatically switched on;
When the situation that the power supply of the standby power supply is under-voltage is detected, the duration time of the under-voltage is longer than sixth preset time, and meanwhile the common power supply has voltage, the switch of the standby power supply is controlled to be automatically switched off, and meanwhile, the switch of the common power supply is controlled to be automatically switched on.
7. A 0.4kV dual power supply changeover switch, comprising the 0.4kV dual power supply changeover device according to any one of claims 1 to 5, a first switch, and a second switch;
The first switch is connected with a common power supply, the second switch is connected with a standby power supply, and the first switch and the second switch are both connected with the 0.4kV double-power-supply switching device.
8. The 0.4kV double-power-supply changeover switch according to claim 7, wherein the first switch is connected with the controller, and the second switch is connected with the controller; wherein the content of the first and second substances,
The first switch comprises a first coil and a first vacuum bulb, the first coil and the first vacuum bulb are connected through a first pull rod, the number of the first pull rods is two, the two first pull rods are connected through a first insulator, one first pull rod is connected with the first vacuum bulb, and the other first pull rod is connected with the first coil;
The second switch includes second coil and second vacuum bubble, the second coil with the second vacuum bubble passes through the second pull rod and connects, the second pull rod includes two, two connect through the second insulator between the second pull rod, one the second pull rod with the second vacuum bubble is connected, another the second pull rod with the second coil is connected.
9. The 0.4kV double-power-supply changeover switch according to claim 8, further comprising a first capacitor and a second capacitor,
The first capacitor is respectively arranged at the first coil and the second coil and used for storing energy when the first switch and/or the second switch is switched off and switched on;
The second capacitors are respectively arranged at the first vacuum bubble and the second vacuum bubble and used for manual zero setting when the first switch and/or the second switch is opened or closed.
10. The 0.4kV dual-power change-over switch according to claim 7, further comprising a locking mechanism respectively disposed at the first switch and the second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932884.7A CN110571916A (en) | 2019-09-29 | 2019-09-29 | 0.4kV double-power switching device and switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932884.7A CN110571916A (en) | 2019-09-29 | 2019-09-29 | 0.4kV double-power switching device and switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110571916A true CN110571916A (en) | 2019-12-13 |
Family
ID=68783218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910932884.7A Pending CN110571916A (en) | 2019-09-29 | 2019-09-29 | 0.4kV double-power switching device and switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110571916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211614A (en) * | 2020-03-18 | 2020-05-29 | 浩云科技股份有限公司 | Double-backup power supply switching system and method |
| CN113793772A (en) * | 2021-09-28 | 2021-12-14 | 国网四川省电力公司绵阳供电公司 | Brake separating device of high-voltage drop switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201178331Y (en) * | 2008-02-04 | 2009-01-07 | 南京因泰莱配电自动化设备有限公司 | Novel 10kV outdoor double power supply self-thrower apparatus |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
| CN101465560A (en) * | 2008-12-29 | 2009-06-24 | 南京南瑞继保电气有限公司 | Method for rapidly switching power supply |
| CN106449203A (en) * | 2016-11-07 | 2017-02-22 | 中国电力科学研究院 | Dual-power uninterruptible ultra-fast switching device |
| CN108400054A (en) * | 2018-04-04 | 2018-08-14 | 广西配网电力技术有限公司 | A kind of outdoor vacuum circuit breaker control system |
-
2019
- 2019-09-29 CN CN201910932884.7A patent/CN110571916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201178331Y (en) * | 2008-02-04 | 2009-01-07 | 南京因泰莱配电自动化设备有限公司 | Novel 10kV outdoor double power supply self-thrower apparatus |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
| CN101465560A (en) * | 2008-12-29 | 2009-06-24 | 南京南瑞继保电气有限公司 | Method for rapidly switching power supply |
| CN106449203A (en) * | 2016-11-07 | 2017-02-22 | 中国电力科学研究院 | Dual-power uninterruptible ultra-fast switching device |
| CN108400054A (en) * | 2018-04-04 | 2018-08-14 | 广西配网电力技术有限公司 | A kind of outdoor vacuum circuit breaker control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211614A (en) * | 2020-03-18 | 2020-05-29 | 浩云科技股份有限公司 | Double-backup power supply switching system and method |
| CN113793772A (en) * | 2021-09-28 | 2021-12-14 | 国网四川省电力公司绵阳供电公司 | Brake separating device of high-voltage drop switch |
| CN113793772B (en) * | 2021-09-28 | 2024-06-21 | 国网四川省电力公司绵阳供电公司 | Brake separating device of high-voltage drop switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101079900B1 (en) | Static transfer switch device, power supply apparatus using the switch device and switching method thereof | |
| US9197056B2 (en) | Solid state power control system for aircraft high voltage DC power distribution | |
| JP2016213179A (en) | DC circuit breaker and method of use | |
| CN102237711B (en) | Standby power switching device and power failure judgment method thereof | |
| CN110007261B (en) | Device and method for judging fusing of primary side high-voltage fuse of voltage transformer | |
| CN110571916A (en) | 0.4kV double-power switching device and switch | |
| CN108899901A (en) | A kind of 10kV bus prepared auto restart starting method and system | |
| CN110994567A (en) | Direct current power grid fault current controller | |
| CN110190740B (en) | Fault-tolerant protection method and circuit of PFC circuit and air conditioner | |
| US12009653B2 (en) | Contactor control apparatus and power supply system | |
| CN107846211B (en) | Hybrid switch with main path connected in series with solid-state switch | |
| JPH06104497A (en) | Superconducting energy storage device | |
| CN111934290B (en) | Multi-terminal direct current breaker and control method thereof | |
| CN112583007A (en) | Fast solid state transfer switch control strategy and system | |
| CN112053869A (en) | Controller, control method and quick mechanical switch comprising controller | |
| CN116316454A (en) | Short-lead protection misoperation control method and system based on current criterion | |
| CN111555279A (en) | Method for maintaining power utilization continuity based on intelligent unloading of three-level load | |
| CN104953535A (en) | Breaking circuit and active type breaking protection device applying same | |
| JP2020039236A (en) | Uninterruptible power supply system | |
| CN112751316B (en) | Configuration method and device for power failure of bus voltage transformer | |
| CN104852592B (en) | Three-phase alternating-current supply switching circuit | |
| CN109412256B (en) | Standby power supply switching method and device | |
| CN107896102B (en) | Hybrid switch with main channel connected with solid-state switch in series | |
| CN204886123U (en) | Disconnected protection device of active branch who divides breaking of contact and applied this circuit | |
| CN108333983B (en) | Voltage-regulating tap switch and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
|
| RJ01 | Rejection of invention patent application after publication |