CN115441578B - Dual-power switching box - Google Patents
Dual-power switching box Download PDFInfo
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- CN115441578B CN115441578B CN202211281653.2A CN202211281653A CN115441578B CN 115441578 B CN115441578 B CN 115441578B CN 202211281653 A CN202211281653 A CN 202211281653A CN 115441578 B CN115441578 B CN 115441578B
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 14
- 230000009977 dual effect Effects 0.000 claims description 34
- 238000010248 power generation Methods 0.000 claims description 16
- 230000000007 visual effect Effects 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000007791 dehumidification Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
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Classifications
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The embodiment of the invention discloses a dual-power supply switching box. The dual-power supply switching box comprises a switching box main body and a cabinet door matched with the switching box main body; the switching box main body comprises a switching switch module and a cable interface, wherein the switching switch module is used for selecting and switching in a normal state or a power-supply-maintaining state; the cable interface comprises a load end power utilization interface, a UPS power input interface, a conventional power interface, a UPS power output and a generator car access interface; the transfer switch module comprises a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal; the cabinet door comprises an intelligent gateway and a sensor, wherein the sensor is used for collecting output current and sending the output current to the intelligent gateway; the switching box main body further comprises a wireless temperature measuring device, wherein the wireless temperature measuring device is used for collecting the temperature of the cable joint and sending the temperature to the intelligent gateway; the intelligent gateway is used for alarming when the temperature of the cable joint and the input current and the output current are abnormal. The invention realizes quick wiring of the cable, improves the working efficiency, and realizes data acquisition and abnormal condition alarm.
Description
Technical Field
The embodiment of the invention relates to the technical field of power supply and distribution equipment, in particular to a dual-power supply switching box.
Background
With the rapid development of social economy, various major conferences, sporting events, important activities, various exams and other power-protecting and supplying activities are more frequent, most power-protecting and supplying places are relatively fixed, but a plurality of places are not provided with UPS power supply equipment, so that the uninterrupted power supply requirement cannot be met. The current method for solving the problem that no UPS power supply equipment is configured in the power-supply-protecting place is to temporarily configure a UPS power supply vehicle and a power generation vehicle, and connect the UPS power supply vehicle and the power generation vehicle to a power-protecting line through a cable, a power supply switching box and a low-voltage tapping box.
The power-protecting circuit needs to be wired in advance, a core circuit related to power protection is detached from a user low-voltage cabinet, a temporary cable is connected, and the temporary cable is connected to a dual-power supply switching box through a plurality of low-voltage tapping boxes; the ac mains supply needs to be disconnected from the feeder cabinet of the substation and connected to the double-power switching box by a patch cable. The UPS power supply vehicle (a back incoming line and a back outgoing line) allocated by the power supply department is also connected with the dual-power supply switching box, and the specific wiring mode and the working principle are shown in fig. 1 and 2 in detail. Under normal conditions, the double-power supply switching box is switched to the circuit 1, the power supply circuit is directly powered by the mains supply and then outputs the power to the low-voltage tapping box, and the mains supply does not pass through the UPS power supply vehicle, so that the long-time charging of the UPS power supply vehicle is avoided, and the service life of the UPS power supply vehicle is influenced. Before the power-saving activity starts, the dual-power supply switching box is switched to the line 2 in advance, the commercial power passes through the dual-power supply switching box to float and charge the UPS power supply vehicle, and then the commercial power is returned to the dual-power supply switching box from the UPS power supply vehicle to be supplied to the power-saving line, so that the commercial power is ensured to be interrupted in case of interruption, and the power-saving line can be used for uninterrupted power supply.
The cable of switching into dual supply switching box is total 3 times, and every 1 cable of returning is divided into A, B, C, N4 cable altogether, and the most ideal time of plugging into the cable is about 1 hour in this way too, if meet operating personnel skill unskilled, the unwrapping wire topography is complicated, and dual supply switching box wiring's efficiency will be lower, has wasted a large amount of manpowers, has also postponed the installation progress, guarantees that power supply work receives the influence of different degrees, and dual supply switching box's intelligent degree is lower, can't carry out dynamic monitoring to it.
Disclosure of Invention
The invention provides a dual-power switching box, which realizes quick wiring of cables and improves working efficiency; and an intelligent gateway and a sensor are added to realize data acquisition of current, temperature and the like and abnormal condition alarm.
According to an aspect of the present invention, there is provided a dual power switching box including: a switching box main body and a cabinet door matched with the switching box main body;
The switching box main body comprises a switching switch module and a cable interface, wherein the switching switch module comprises a switching switch, and the switching switch is used for selectively switching a normal state or a power-supply-maintaining state;
The cable interface comprises a load end power utilization interface, a UPS power input interface, a conventional power interface, a UPS power output and a generator car access interface; the load end power utilization interface is connected with a load through a cable and is used for supplying power to the load; the UPS power input interface is connected with the UPS power through a cable and is used for charging the UPS power when power is supplied; the conventional power interface is connected with the mains supply through a cable and is used for inputting a power supply; the UPS power supply output and power generation vehicle access interface is connected with the UPS power supply and the power generation vehicle through cables and is used for connecting the UPS power supply and the power generation vehicle during power failure;
the change-over switch module comprises a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal, wherein the first wiring terminal is connected with the load end through an electric interface, the second wiring terminal is connected with the conventional power interface, the third wiring terminal is connected with the UPS power output and the electric generator car access interface, and the fourth wiring terminal is connected with the UPS power input interface;
The cabinet door comprises an intelligent gateway and a sensor, wherein the sensor is respectively connected with the first wiring terminal, the second wiring terminal, the third wiring terminal and the fourth wiring terminal, the sensor is used for collecting input currents of the second wiring terminal and the fourth wiring terminal, and output currents of the first wiring terminal and the third wiring terminal are sent to the intelligent gateway;
The switching box main body further comprises a wireless temperature measuring device, wherein the wireless temperature measuring device is arranged on the first wiring end, the second wiring end, the third wiring end and the fourth wiring end, and the wireless temperature measuring device is used for collecting the cable joint temperatures of the second wiring end and the fourth wiring end, the cable joint temperatures of the first wiring end and the third wiring end and sending the cable joint temperatures to the intelligent gateway;
The intelligent gateway is used for alarming when the temperature of the cable joint and the input current are abnormal.
Optionally, the sensor comprises a multifunctional digital voltmeter for recording the current of each time period.
Optionally, the electrical interface for the load end, the UPS power input interface, the conventional power interface, the UPS power output interface, and the generator car access interface all include four sub-interfaces, where the four sub-interfaces respectively correspond to A, B, C, N of the three-phase four-wire system power source.
Optionally, the first terminal includes four sub-terminals corresponding to the four sub-interfaces of the load terminal power interface respectively; the second wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the conventional power interface; the third wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the UPS power supply output and the power generation vehicle access interface; the fourth wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the UPS power input interface.
Optionally, the first terminal and the fourth terminal are electrically connected internally, and the second terminal and the third terminal are electrically connected internally.
Optionally, the switching box main body and the cabinet door are both provided with door state sensors, and the door state sensors are used for detecting the opening and closing states of the dual-power switching box.
Optionally, the dual power supply switching box further comprises a plurality of heat dissipation holes arranged in a rectangular array and arranged on the side face, and the heat dissipation holes are used for gas exchange and heat dissipation.
Optionally, the dual-power supply switching box further comprises an audible and visual alarm device, wherein the audible and visual alarm device is used for alarming when abnormal conditions occur.
Optionally, the dual power switching box further comprises a lighting device for auxiliary lighting.
Optionally, the dual power supply switching box further comprises a dehumidifying device, wherein the dehumidifying device is used for monitoring the humidity inside the box body, and when the humidity is greater than a preset value, the dehumidifying device is used for rapidly discharging the humidity.
According to the technical scheme, the wiring ports of the dual-power switching box are improved and optimized, the cable quick interfaces of the UPS power supply vehicle and the power generation vehicle are installed on the dual-power switching box, the quick interfaces are installed on the dual-power switching box, quick wiring can be achieved, and the wiring time can be controlled to be about 5 minutes; intelligent transformation is carried out on the dual-power switching box, an intelligent gateway and a sensor are additionally arranged in the dual-power switching box, the temperature of input current, output current and cable joints is collected, data can be transmitted to the background for real-time monitoring, and alarm prompt is carried out on abnormal conditions. The technical scheme of the embodiment solves the problems of low wiring efficiency, manpower resource waste, delayed installation progress and low intelligent degree of the existing power supply junction box; the access speed of the cable is improved, the rapid wiring of the cable is realized, the working efficiency is improved, the manpower resources are saved, and the installation progress is not influenced; the intelligent gateway and the sensor are added, so that data acquisition such as current and temperature and abnormal condition alarm are realized, and the intelligent degree of the dual-power switching box is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a prior art electrical wiring diagram of a power protection circuit;
FIG. 2 is a diagram of the power-on operation of a dual power switching box according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a dual power switching box according to an embodiment of the present invention;
fig. 4 is a schematic structural view of yet another dual power switching box according to an embodiment of the present invention;
fig. 5 is a front view of a dual power switching box provided according to an embodiment of the present invention;
Fig. 6 is a side view of a dual power switching box provided according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 3 is a schematic structural diagram of a dual power switching box according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of another dual power switching box according to an embodiment of the present invention, and referring to fig. 3 and fig. 4, an embodiment of the present invention provides a dual power switching box, including: a switch box body 10 and a cabinet door 20 adapted to the switch box body 10; the switching box main body 10 comprises a switching switch module 101 and a cable interface 102, wherein the switching switch module 101 comprises a switching switch 1015, and the switching switch 1015 is used for selectively switching a normal state or a power supply protection state; the cable interface 102 includes a load side electrical interface 1021, a UPS power input interface 1022, a conventional power interface 1023, a UPS power output, and a generator car access interface 1024; the load end power interface 1021 is connected with a load through a cable and is used for supplying power to the load; the UPS power input interface 1022 is connected with the UPS power through a cable and is used for charging the UPS power when power is supplied; the conventional power interface 1023 is connected with the mains supply through a cable and is used for inputting a power supply; the UPS power output and generator car access interface 1024 is connected with the UPS power source and the generator car through cables and is used for accessing the UPS power source and the generator car during power failure; the transfer switch module 101 includes a first terminal 1011, a second terminal 1012, a third terminal 1013, and a fourth terminal 1014, the first terminal 1011 and the load terminal are connected by an electrical interface 1021, the second terminal 1012 is connected to a conventional power interface 1023, the third terminal 1013 is connected to a UPS power output, a generator car access interface 1024, and the fourth terminal 1014 is connected to a UPS power input interface 1022; the cabinet door 20 comprises an intelligent gateway 201 and a sensor 202, wherein the sensor 202 is respectively connected with a first terminal 1011, a second terminal 1012, a third terminal 1013 and a fourth terminal 1014, and the sensor 202 is used for acquiring input currents of the second terminal 1012 and the fourth terminal 1014 and output currents of the first terminal 1011 and the third terminal 1013 and sending the input currents to the intelligent gateway 201; the switch box main body 10 further includes a wireless temperature measuring device 103, where the wireless temperature measuring device 103 is disposed on the first terminal 1011, the second terminal 1012, the third terminal 1013, and the fourth terminal 1014, and the wireless temperature measuring device 103 is configured to collect temperatures of cable joints of the second terminal 1012 and the fourth terminal 1014, and temperatures of cable joints of the first terminal 1011 and the third terminal 1013, and send the temperatures to the intelligent gateway 201; the intelligent gateway 201 is used for alarming when the temperature of the cable joint and the input current and the output current are abnormal.
Specifically, the cable interface 102 is not a conventional air connector, industrial plug, or the like, but is a modified mechanical interface that facilitates quick connection to a cable. The cable interface 102 is made up of four different colored interfaces, for example, the colors of the cable interface 102 may be yellow, green, red, and blue. The UPS power input interface 1022, the conventional power interface 1023, and the UPS power output, and the generator car access interface 1024 in the dual-power switching box cable interface 102 are connected to the UPS power car input, the ac mains interface, the UPS power car output, or the generator car input, respectively, through cables. The connection mode between the dual-power supply switching box and the outside is that the original 3-loop cable (12 branch cables) and the wire lug are connected to the busbar of the dual-power supply switching box, the busbar is modified into 12 quick cable interfaces 102, and the 12 branch cables can be quickly connected to the dual-power supply switching box.
Normally, the change-over switch 1015 of the double-power supply change-over box change-over switch module 101 is switched to a normal state, the power supply line is directly supplied by the common power supply ac mains supply, the ac mains supply sequentially passes through the conventional power supply interface 1023 through the cable, and the second wiring terminal 1012, the first wiring terminal 1011 and the load end power supply interface 1021 supply power for the load. Under normal conditions, the alternating current mains supply does not pass through the UPS, so that the long-time charging of the UPS is avoided, and the service life of the UPS is influenced.
Before the power-saving activity starts, the change-over switch 1015 of the double-power supply change-over box change-over switch module 101 is switched to a power-saving state, and alternating-current commercial power sequentially passes through the conventional power interface 1023, the second wiring terminal 1012, the third wiring terminal 1013, the UPS power output and the generator car access interface 1024 to float and charge the UPS power supply of the standby power supply; and the standby power supply is returned to the UPS power input interface 1022 in the dual-power switching box from the standby power supply UPS, and is supplied to the power protection circuit through the load end power utilization interface 1021 and the cable, so that the power protection circuit can supply power uninterruptedly in case of interruption of mains supply.
The UPS power supply can only supply power for a short time, and the emergency power generation car is arranged to charge the UPS power supply, so that the power supply line can supply power uninterruptedly. The UPS power supply is equivalent to a large-scale treasured that charges, and is in the float charge state usually, if there is not the UPS power supply, only has emergent power generation car, no matter how fast the operation switches over, the lamp holder of load end all can flash, all can the perception power failure. The UPS power and the emergency power generation car are matched to be used to achieve the effect of power failure, and the lamp cap cannot flash.
It should be noted that the UPS power source in this embodiment may be a UPS power source vehicle, and in the case that the commercial power failure cannot be recovered in a short time, the UPS power source is used to supply power, so that seamless docking of power supply can be realized in real time. After the mains supply is powered down, the inverter in the grid-hung output state works, the storage battery discharges and outputs through the inverter, and the mains supply is seamlessly replaced to supply to a load. The mains supply is re-electrified, the inverter tracks the mains supply, the input power of the generator is automatically switched back to the mains supply for operation, and meanwhile, the generator stops working. The power supply time of the UPS power supply vehicle can meet the emergency power supply requirement of the power station power control system in an emergency situation. Meanwhile, the continuous working time is not less than 2 hours. Therefore, the operation equipment is ensured to be powered by a UPS from mains supply, uninterrupted operation of the equipment is ensured, and the influence of accident power failure on production and life is reduced to zero.
The sensor 202 collects alternating mains input current at the second terminal 1012, input current at the fourth terminal 1014 of the UPS power source; a current output to the load from the first terminal 1011, and a current output to the UPS from the third terminal 1013; the wireless temperature measuring device 103 collects the temperature input by the cable connectors of the second wiring terminal 1012 and the fourth wiring terminal 1014 and the temperature output by the cable connectors of the first wiring terminal 1011 and the third wiring terminal 1013; the intelligent gateway 201 can acquire the current and the temperature data in a wireless transmission mode, can also wirelessly transmit the current and the temperature data to the background to monitor the temperature and the current in real time, and give an alarm to prompt abnormal conditions, so that on-site staff can timely process and remove faults, and the power supply line can be ensured to supply power uninterruptedly.
According to the technical scheme, the wiring ports of the dual-power switching box are improved and optimized, the cable quick interfaces of the UPS power supply vehicle and the power generation vehicle are installed on the dual-power switching box, the quick interfaces are installed on the dual-power switching box, quick wiring can be achieved, and the wiring time can be controlled to be about 5 minutes; intelligent transformation is carried out on the dual-power switching box, an intelligent gateway and a sensor are additionally arranged in the dual-power switching box, the temperature of input current, output current and cable joints is collected, data can be transmitted to the background for real-time monitoring, and alarm prompt is carried out on abnormal conditions. The technical scheme of the embodiment solves the problems of low wiring efficiency, manpower resource waste, delayed installation progress and low intelligent degree of the existing power supply junction box; the access speed of the cable is improved, the rapid wiring of the cable is realized, the working efficiency is improved, the manpower resources are saved, and the installation progress is not influenced; the intelligent gateway and the sensor are added, so that data acquisition such as current and temperature and abnormal condition alarm are realized, and the intelligent degree of the dual-power switching box is improved.
With continued reference to fig. 3, optionally, the sensor 202 includes a multi-function digital voltmeter for recording the current for each time period.
Specifically, the sensor 202 can be a multifunctional digital voltmeter, can save the current of the circuit in each time period, and provides a basis for protecting the subsequent transformation of the power supply place.
With continued reference to fig. 3, optionally, the load side electrical interface 1021, the UPS power input interface 1022, the conventional power interface 1023, and the UPS power output, generator car access interface 1024 all include four sub-interfaces, which correspond to A, B, C, N of the three-phase four-wire power source, respectively.
Specifically, the power protection circuit is a three-phase four-wire system 380V voltage, and the four sub-interfaces respectively correspond to A, B, C, N of the three-phase four-wire system power supply. The four sub-interfaces are four interfaces of different colors, for example, the four sub-interfaces may be yellow, green, red and blue in color.
With continued reference to fig. 3, the first terminal 1011 optionally includes four sub-terminals corresponding to the four sub-interfaces of the load side electrical interface 1021, respectively; the second terminal 1012 includes four sub-terminals corresponding to the four sub-interfaces of the conventional power interface 1023, respectively; the third terminal 1013 includes four sub terminals corresponding to the UPS power output and four sub interfaces of the generator car access interface 1024, respectively; the fourth terminal 1014 includes four sub-terminals corresponding to the four sub-interfaces of the UPS power input interface 1022, respectively.
Specifically, the four sub-terminals of the first terminal 1011 are connected to the four sub-interfaces of the load-side electrical interface 1021 via copper bars, and the four sub-terminals of the fourth terminal 1014 are connected to the four sub-interfaces of the UPS power input interface 1022 via copper bars. The four sub-terminals of the second terminal 1012 are respectively corresponding to and electrically connected with the four sub-interfaces of the conventional power interface 1023, and the four sub-terminals of the third terminal 1013 are respectively corresponding to and electrically connected with the four sub-interfaces of the UPS power output and the generator car access interface 1024.
With continued reference to fig. 3, optionally, the first terminal 1011 and the fourth terminal 1014 are electrically connected internally, and the second terminal 1012 and the third terminal 1013 are electrically connected internally.
Specifically, the first terminal 1011 and the fourth terminal 1014 are electrically connected by a copper bar, realizing an internal electrical path; the second terminal 1012 and the third terminal 1013 are electrically connected by a copper bar, and an internal electrical path is realized. When the power is supplied, alternating current commercial power can reach a fourth wiring terminal 1014 through a first wiring terminal 1011 and is connected to a UPS power supply vehicle through a cable to charge the UPS power supply vehicle; or the UPS power supply vehicle is charged after being connected to the emergency power generation vehicle; and the UPS power supply vehicle returns to the third wiring terminal 1013 of the dual-power supply switching box through a cable, and is supplied to the power protection circuit through the second wiring terminal 1012 and the cable, so that the power protection circuit can supply power uninterruptedly in case of interruption of the mains supply.
With continued reference to fig. 4, optionally, the switch box body 10 and the cabinet door 20 are each provided with a door state sensor 30, and the door state sensor 30 is used to detect the open-close state of the dual power switch box.
Specifically, the door status sensor 30 has a function of uploading the open and close status signals of the dual-power switching box door 20 to the intelligent gateway 201, when the door 20 is opened and the cable line is connected, the intelligent gateway 201 can give an alarm in time to prompt, so that the normal and safe operation of the dual-power switching box is ensured.
The door status sensor 30 may select a mechanical limit switch with contacts or a sensor with a magnetic switch of polarity; the door state sensor 30 is made of high-quality materials, the shell is made of stainless steel or alloy, the door state sensor is waterproof and rust-proof, stable performance is ensured, false alarm is avoided, and the mechanical action times are not less than 5000 times. The door status sensor 30 is of a passive design, and no power line or external power supply is required. The door status sensor 30 accesses the intelligent gateway in the dual power switching box via a wired node signal.
Fig. 5 is a front view of a dual power switching box according to an embodiment of the present invention, and fig. 6 is a side view of a dual power switching box according to an embodiment of the present invention, and referring to fig. 5 and 6, optionally, the dual power switching box further includes a plurality of heat dissipation holes 40 arranged in a rectangular array and provided at a side surface, and the heat dissipation holes 40 are used for gas exchange and heat dissipation.
Specifically, the dual-power switching box is divided according to the functional partition, the switching box main body 10 can be an incoming line outgoing line chamber, and the cabinet door 20 can be a metering chamber. The lower edge of the radiating hole 40 is flush with the side surface of the box body, the upper edge is provided with a bulge and integrally formed with the cabinet plate of the box body, the radiating hole 40 effectively prevents rainwater from entering the box body, and the radiating hole 40 can be used for ventilating and radiating so as to realize heat exchange of gas in the box body.
Optionally, the dual-power supply switching box further comprises an audible and visual alarm device, wherein the audible and visual alarm device is used for alarming when abnormal conditions occur.
Specifically, the audible and visual alarm device is an alarm signal device which sends out alarm signals to people through sound and various lights. When an accident or special condition occurs in the dual-power switching box, the audible and visual alarm device sends out a strong audible and visual alarm signal so as to achieve the purpose of reminding on-site personnel of paying attention.
Optionally, the dual power switching box further comprises a lighting device for auxiliary lighting.
Specifically, when night or overcast day light condition is relatively poor, lighting device can be used for auxiliary illumination, realizes the quick wiring of cable, improves work efficiency.
Optionally, the dual power supply switching box further comprises a dehumidifying device, wherein the dehumidifying device is used for monitoring the humidity inside the box body, and when the humidity is greater than a preset value, the dehumidifying device is used for rapidly discharging humidity.
Specifically, set up dehydrating unit in dual supply switching case, carry out real-time supervision to inside humidity, when appearing humidity and be greater than the default, open the exhaust fan, promote the circulation of air, dehumidify fast.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A dual power switching box, comprising: a switching box main body and a cabinet door matched with the switching box main body;
The switching box main body comprises a switching switch module and a cable interface, wherein the switching switch module comprises a switching switch, and the switching switch is used for selectively switching a normal state or a power-supply-maintaining state;
The cable interface comprises a load end power utilization interface, a UPS power input interface, a conventional power interface, a UPS power output and a generator car access interface; the load end power utilization interface is connected with a load through a cable and is used for supplying power to the load; the UPS power input interface is connected with the UPS power through a cable and is used for charging the UPS power when power is supplied; the conventional power interface is connected with the mains supply through a cable and is used for inputting a power supply; the UPS power supply output and power generation vehicle access interface is connected with the UPS power supply and the power generation vehicle through cables and is used for connecting the UPS power supply and the power generation vehicle during power failure;
The change-over switch module comprises a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal; the first wiring terminal is connected with the load end through an electric interface, the second wiring terminal is connected with the conventional power interface, the third wiring terminal is connected with the UPS power output and the electric generator car access interface, and the fourth wiring terminal is connected with the UPS power input interface;
The cabinet door comprises an intelligent gateway and a sensor, wherein the sensor is respectively connected with the first wiring terminal, the second wiring terminal, the third wiring terminal and the fourth wiring terminal, the sensor is used for collecting input currents of the second wiring terminal and the fourth wiring terminal, and output currents of the first wiring terminal and the third wiring terminal are sent to the intelligent gateway;
The switching box main body further comprises a wireless temperature measuring device, wherein the wireless temperature measuring device is arranged on the first wiring end, the second wiring end, the third wiring end and the fourth wiring end, and the wireless temperature measuring device is used for collecting the cable joint temperatures of the second wiring end and the fourth wiring end, the cable joint temperatures of the first wiring end and the third wiring end and sending the cable joint temperatures to the intelligent gateway;
The intelligent gateway is used for alarming when the temperature of the cable joint and the input current are abnormal.
2. The dual power switching box of claim 1, wherein the sensor comprises a multi-function digital voltage ammeter for recording the current for each time period.
3. The dual power switching box of claim 1, wherein the load side electrical interface, the UPS power input interface, the conventional power interface, and the UPS power output, generator car access interface each comprise four sub-interfaces, each of which corresponds to A, B, C, N of a three-phase four-wire power source.
4. A dual power switching box according to claim 3, wherein said first terminal includes four sub-terminals corresponding to four sub-interfaces of said load side electrical interface, respectively; the second wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the conventional power interface; the third wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the UPS power supply output and the power generation vehicle access interface; the fourth wiring terminal comprises four sub-wiring terminals which respectively correspond to the four sub-interfaces of the UPS power input interface.
5. The dual power switching box of claim 1, wherein the first terminal and the fourth terminal are electrically connected internally and the second terminal and the third terminal are electrically connected internally.
6. The dual power switching box according to claim 1, wherein the switching box body and the cabinet door are each provided with a door state sensor for detecting an open-close state of the dual power switching box.
7. The dual power switching box of claim 1, further comprising a plurality of heat dissipating holes arranged in a rectangular array laterally disposed for gas exchange and heat dissipation.
8. The dual power switching box of claim 1, further comprising an audible and visual alarm for alerting of an abnormal situation.
9. The dual power switching box of claim 1, further comprising a lighting device for auxiliary lighting.
10. The dual power switching box according to claim 1, further comprising a dehumidifying device for monitoring the humidity inside the box, and performing rapid dehumidification when the humidity is greater than a preset value.
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| CN202211281653.2A CN115441578B (en) | 2022-10-19 | 2022-10-19 | Dual-power switching box |
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| CN202211281653.2A CN115441578B (en) | 2022-10-19 | 2022-10-19 | Dual-power switching box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571915A (en) * | 2019-09-19 | 2019-12-13 | 浙江工业大学 | An intelligent energy storage power supply vehicle uninterruptible power supply system device and control method thereof |
| CN111769495A (en) * | 2020-07-08 | 2020-10-13 | 广东电网有限责任公司清远供电局 | Portable power supply junction box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214013943U (en) * | 2020-12-10 | 2021-08-20 | 云南电网有限责任公司怒江供电局 | Portable ATS power switching device |
| CN114744433A (en) * | 2022-01-26 | 2022-07-12 | 国网浙江省电力有限公司金华供电公司 | A fast switching device for mobile energy storage emergency power supply |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571915A (en) * | 2019-09-19 | 2019-12-13 | 浙江工业大学 | An intelligent energy storage power supply vehicle uninterruptible power supply system device and control method thereof |
| CN111769495A (en) * | 2020-07-08 | 2020-10-13 | 广东电网有限责任公司清远供电局 | Portable power supply junction box |
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