CN114374155B - Load switch commutation device and three-phase load unbalance automatic commutation leveling system thereof - Google Patents
Load switch commutation device and three-phase load unbalance automatic commutation leveling system thereof Download PDFInfo
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- CN114374155B CN114374155B CN202111568499.2A CN202111568499A CN114374155B CN 114374155 B CN114374155 B CN 114374155B CN 202111568499 A CN202111568499 A CN 202111568499A CN 114374155 B CN114374155 B CN 114374155B
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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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
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/052—Mounting on rails
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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
- H02B1/202—Cable lay-outs
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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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00002—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 monitoring
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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
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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
- H02J13/00032—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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- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Patch Boards (AREA)
Abstract
The invention provides a load switch commutation device and a three-phase load unbalance automatic commutation leveling system thereof, wherein the load switch commutation device comprises a main body box body, a bearing plate body is arranged in the main body box body, a warning mechanism is arranged, a commutation switch can be monitored in real time, current is automatically cut off when the load switch commutation device is overloaded, damage caused by overload of the load switch commutation device is avoided, and meanwhile, warning and reminding of staff to overhaul can be carried out, and the bearing plate body can be automatically pushed out when the load switch commutation device is opened by arranging a closing mechanism, so that the staff can conveniently overhaul. The three-phase load unbalance automatic commutation leveling system adopts Lora to realize data communication between the intelligent commutation terminal and the load switch commutation device, realizes stable data transmission of load in a wireless mode, realizes zero-delay seamless commutation, does not influence user power consumption without power outage, and meets the requirement of electric energy quality.
Description
Technical Field
The invention belongs to the technical field of three-phase load unbalance automatic phase change leveling, and particularly relates to a load switch phase change device and a three-phase load unbalance automatic phase change leveling system.
Background
In the daily operation management of a power distribution network, the loss power quality of a line is one of the most relevant problems of an electric power department and a user, and the three-phase imbalance problem of the power distribution network is increasingly serious due to the access of a large number of single-phase, asymmetric, nonlinear and impact loads in a transformer area, the imbalance degree of part of the transformer area is even more than 70%, the imbalance degree of part of the transformer area is seriously more than the national regulation standard, high line loss and poor power quality are caused, and the service life of a transformer and the safety of electric equipment are seriously influenced.
The existing automatic phase-change leveling system for the unbalanced load of the distribution transformer generally comprises an intelligent phase-change terminal and a plurality of load switch phase-change devices; the intelligent phase-change terminal is arranged on the secondary side of the transformer, and the load phase-change switch is arranged on the inlet wire end of the resident user.
In the existing phase-change switching device, reference is made to patent document CN109904864a, and in the device proposed in this patent document, although the undisturbed phase change and convenient installation can be realized, the phase-change switching device cannot be early-warned and automatically cut off when three unbalanced degrees such as asymmetry, nonlinearity and impact load are overloaded, so that the danger of the load switch phase-change device is high, and meanwhile, the later-stage staff is not facilitated to overhaul, so that the load switch phase-change device is needed to solve the technical problems.
Disclosure of Invention
The invention provides a load switch commutation device and a three-phase load unbalance automatic commutation leveling system thereof for solving the technical problems in the prior art.
The technical scheme for solving the technical problems is as follows:
the utility model provides a load switch commutation device, includes the main part box, the inside of main part box is provided with the loading board body, the inside of main part box is provided with early warning mechanism, early warning mechanism includes control center, control center fixed connection in the positive side of loading board body, control center's right-hand phase change switch that is provided with, phase change switch fixed connection the positive side of loading board body, phase change switch's upper surface and bottom surface all are connected with three and connect electric draw-in groove, the place ahead of main part box is provided with closing mechanism, closing mechanism includes four first slide rail, four first slide rail respectively fixed connection in on two inside walls of main part box, four extension of loading board body side respectively with four first slide rail's inner wall sliding connection, the back rotation of main part box is connected with four fixed plates, four the fixed plate is kept away from the screw thread groove has all been seted up to main part box's one end.
Preferably, in the load switch phase-change device, rotating shaft groups are respectively arranged above and below the phase-change switch, two rotating shaft groups are respectively and fixedly connected to the front side surface of the bearing plate body, the outer surfaces of the rotating shafts of the two rotating shaft groups are respectively and fixedly connected with three binding posts, and six binding posts are respectively matched with six power connection clamping grooves.
Preferably, in the load switch phase-change device, the positive side surfaces of the six binding posts are all electrically connected with external conductors, three fixing grooves are formed in the upper portion and the lower portion of the control center, the six fixing grooves are embedded in the inner wall of the main body box and extend to the outer portion of the main body box, and the six external conductors are matched with the six fixing grooves respectively.
Preferably, the load switch commutation device, wherein rotating motors are arranged above and below the control center, the two rotating motors are fixedly connected to the front side surface of the bearing plate body, the output rotating shafts of the two rotating motors are fixedly connected with the rotating shafts of the rotating shaft groups respectively, the two rotating motors are electrically connected with the control center through first built-in wires, and an alarm is arranged above the control center.
Preferably, the load switch commutation device is characterized in that the alarm is fixedly connected to the front side surface of the bearing plate body, the alarm is electrically connected with the control center through the second built-in wire, an alarm lamp is arranged below the control center and is fixedly connected to the front side surface of the bearing plate body, and the alarm lamp is electrically connected with the control center through the third built-in wire.
Preferably, in the load switch phase-change device, two second sliding guide rails are arranged between the four first sliding guide rails, the two second sliding guide rails are respectively and fixedly connected to the upper surface and the bottom surface of the bearing plate body, two bearings are respectively arranged above and below the two second sliding guide rails, and the four bearings are respectively inlaid in the upper surface and the bottom surface of the main body box body.
Preferably, in the load switch phase-change device, a side surface of the four bearing center shafts, which is close to the bearing plate body, is fixedly connected with a first linkage push rod, the inner walls of the two second sliding guide rails are all slidably connected with two driving blocks, the four first linkage push rods are respectively and fixedly connected with the four driving blocks, and a side surface of the four bearing center shafts, which is far away from the bearing plate body, is fixedly connected with a second linkage push rod.
Preferably, in the load switch phase-change device, two isolation doors are arranged in front of the four first sliding guide rails, the four second linkage push rods are respectively hinged to the upper surfaces and the bottom surfaces of the two isolation doors through pin shafts, and the front side surfaces of the two isolation doors are fixedly connected with the power-assisted handles.
The embodiment of the invention also provides a three-phase load unbalance automatic commutation leveling system, which comprises an intelligent commutation terminal and the load switch commutation devices, wherein the intelligent commutation terminal is in communication connection with a plurality of the load switch commutation devices.
Preferably, the load phase-change switch device is composed of a LoRa communication circuit, a liquid crystal display circuit, a temperature measurement circuit, a voltage and current acquisition circuit and a phase-change switch driving circuit;
the LoRa communication circuit is used for receiving an instruction sent by the intelligent commutation terminal and completing switching of commutation actions;
the current and voltage acquisition circuit acquires data of each phase and transmits the data to the phase-change terminal in real time;
the temperature measuring circuit is used for collecting temperature parameters of the circuit;
the liquid crystal display circuit is used for displaying parameters such as temperature, voltage and current;
the phase change switch driving circuit mainly drives a combined circuit formed by the electromagnetic relay and the thyristor to execute phase change action.
The beneficial effects of the invention are as follows:
1. according to the load phase-change switch device, the early warning mechanism is arranged, so that the phase-change device can be monitored in real time, current is automatically cut off when the phase-change device is overloaded, damage caused by overload of the phase-change device is avoided, meanwhile, workers can be warned to overhaul, and the closing mechanism is arranged, so that the bearing plate body can be automatically pushed out when the device is opened, the workers can overhaul conveniently, and the working efficiency is further improved.
2. According to the load phase-change switch device, the fixing plate and the thread groove are arranged, so that the device can be quickly installed and detached, the installation efficiency of the device is further improved, the alarm lamp is arranged, the alarm can be used for flashing at the same time of early warning, visual prompt is carried out on workers, the workers can conveniently find corresponding equipment for maintenance when the equipment is placed in a concentrated mode, and the power-assisted handle is arranged, so that the workers can conveniently open the main body box, and the working efficiency of the worker maintenance device is further improved.
3. According to the three-phase unbalanced load automatic commutation leveling system, the data communication between the intelligent commutation terminal and the load change-over switch is realized by adopting the Lora, the stable data transmission of the load is realized in a wireless mode, the zero-delay seamless commutation is realized, the power consumption of a user is not influenced by uninterrupted power supply, and the requirement of the power quality is met.
Drawings
FIG. 1 is a schematic perspective view of a load commutation switching device of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the load commutation switching device of the present invention;
FIG. 3 is a schematic perspective view of a monitoring mechanism according to the present invention;
FIG. 4 is a schematic perspective view of a closure mechanism according to the present invention;
fig. 5 is an internal schematic block diagram of the load commutation switching device of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a main body case; 2. a carrier plate body; 3. an early warning mechanism; 301. a control center; 302. a phase change switch; 303. a power connection clamping groove; 304. a rotating shaft group; 305. binding posts; 306. externally connecting a wire; 307. a fixing groove; 308. a rotating electric machine; 309. a first internal lead; 310. an alarm; 311. a second internal lead; 312. an alarm lamp; 313. a third internal lead; 4. a closing mechanism; 401. a first slide rail; 402. a second slide rail; 403. a bearing; 404. a first linkage push rod; 405. a driving block; 406. a second linkage pushrod; 407. an isolation door; 408. a power-assisted handle; 5. a fixing plate; 6. a thread groove.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1-4, the embodiment of the invention provides a load switch phase-change device, which specifically comprises a main body box body 1, wherein a bearing plate body 2 is arranged in the main body box body 1, the main body box body 1 and the bearing plate body 2 are supporting foundations of the device, the load switch phase-change device is made of high-strength light-weight alloy materials, and meanwhile, an insulating coating is coated, so that the device is prevented from being excessively heavy and difficult to carry, and meanwhile, accidental injury of workers caused by conduction of the device is avoided. The inside of main part box 1 is provided with early warning mechanism 3, and early warning mechanism 3 includes control center 301, and control center 301 fixed connection is in the positive side of loading board body 2, and control center 301's right-hand phase change switch 302 that is provided with, and phase change switch 302 fixed connection loading board body 2's positive side, the upper surface and the bottom surface of phase change switch 302 all are connected with three electric draw-in groove 303 that connects. The phase change switch 302 is an existing phase change device, and is fixed on the front side surface of the bearing plate body 2 through a fixing screw, an overload detection device and a wireless transceiver device are arranged in the phase change switch, and meanwhile, the wireless transceiver device is arranged on the control center 301, so that signal transmission between the control center 301 and the phase change switch 302 is facilitated.
Referring to fig. 1-4, rotating shaft groups 304 are disposed above and below the phase change switch 302, the two rotating shaft groups 304 are fixedly connected to the front side surface of the bearing plate 2, the outer surfaces of the rotating shafts of the two rotating shaft groups 304 are fixedly connected with three binding posts 305, and the six binding posts 305 are respectively matched with the six power connection clamping grooves 303. The positive side of six terminal 305 all is connected with external wire 306 electricity, and control center 301 top and below all are provided with three fixed slot 307, and six fixed slot 307 all inlay in the inner wall of main body box 1 and extend to the outside of main body box 1, and six external wire 306 match with six fixed slot 307 respectively. The external lead 306 is a flexible elastic lead device, so as to avoid the damage to the equipment caused by breaking the external lead 306 when the carrier plate body 2 moves.
Referring to fig. 1-4, rotating motors 308 are disposed above and below the control center 301, the two rotating motors 308 are fixedly connected to the front side surface of the bearing plate 2, output rotating shafts of the two rotating motors 308 are respectively and fixedly connected with rotating shafts of the two rotating shaft groups 304, the two rotating motors 308 are electrically connected with the control center 301 through a first built-in wire 309, and an alarm 310 is disposed above the control center 301. In this embodiment, the alarm 310 is an existing alarm device, and can send out a high db prompt tone to prompt the staff, so as to conveniently prompt the staff to overhaul the equipment. Meanwhile, the alarm 310 is fixedly connected to the front side surface of the bearing plate body 2, the alarm 310 is electrically connected with the control center 301 through a second built-in wire 311, an alarm lamp 312 is arranged below the control center 301, the alarm lamp 312 is fixedly connected to the front side surface of the bearing plate body 2, and the alarm lamp 312 is electrically connected with the control center 301 through a third built-in wire 313. In this embodiment, the control center 301 is capable of detecting overload of the phase change switch 302 and reacting according to a corresponding plan, so as to control the rotating motor 308 to power off the phase change switch 302 and control the alarm 310 to prompt a worker, and meanwhile, the alarm lamp 312 is matched to facilitate the worker to find the device position.
Referring to fig. 1-4, a closing mechanism 4 is disposed in front of the main body box 1, the closing mechanism 4 includes four first sliding rails 401, the four first sliding rails 401 are respectively and fixedly connected to two inner side walls of the main body box 1, and four extension portions on the side surface of the bearing plate 2 are respectively and slidably connected to the inner walls of the four first sliding rails 401. Two second sliding guide rails 402 are arranged between the four first sliding guide rails 401, the two second sliding guide rails 402 are respectively and fixedly connected to the upper surface and the bottom surface of the bearing plate body 2, two bearings 403 are respectively arranged above and below the two second sliding guide rails 402, and the four bearings 403 are respectively embedded in the upper surface and the bottom surface of the main body box body 1.
Referring to fig. 1-4, a first linkage push rod 404 is fixedly connected to a side surface, close to the bearing plate body 2, of the center shaft of the four bearings 403, two driving blocks 405 are slidably connected to inner walls of the two second sliding guide rails 402, the four first linkage push rods 404 are fixedly connected with the four driving blocks 405 respectively, and a second linkage push rod 406 is fixedly connected to a side surface, far away from the bearing plate body 2, of the center shaft of the four bearings 403. Two isolation doors 407 are arranged in front of the four first sliding guide rails 401, four second linkage push rods 406 are hinged to the upper surfaces and the bottom surfaces of the two isolation doors 407 through pin shafts respectively, and the front side surfaces of the two isolation doors 407 are fixedly connected with power-assisted handles 408. Can drive the loading board body 2 through first linkage push rod 404 and second linkage push rod 406 when opening isolation door 407 and move forward to stretch out to the device outside, make things convenient for the staff to maintain the electronic component in the early warning mechanism 3, isolation door 407 should adopt transparent material to make here, make things convenient for warning light 312 to transmit the light source outside the equipment.
Referring to fig. 1-4, the back of the main body box 1 is rotationally connected with four fixing plates 5, one ends of the four fixing plates 5 far away from the main body box 1 are provided with thread grooves 6, and the device can be quickly installed and detached by arranging the fixing plates 5 and the thread grooves 6, so that the installation efficiency of the device is further improved.
In this embodiment, the working principle of the load switch commutation device is as follows: the device is fixed at a preselected position by utilizing the fixing plate 5 and the thread groove 6, then the external lead 306 is connected with corresponding electric equipment, then when the phase-change switch 302 works, if the load in the external lead 306 is larger, signals are transmitted to the inside of the control center 301, the control center 301 controls the rotating motor 308 to rotate after judging, the rotating shaft group 304 is driven to rotate by the rotating motor 308 to rotate, the connection clamping groove 303 is separated from the binding post 305 to realize the isolation of the phase-change switch 302, then the alarm 310 is controlled to give an alarm to prompt the equipment failure of the staff, then the alarm lamp 312 is used for flashing to prompt the staff to find the equipment position, then if the staff maintains the equipment, the isolating door 407 is pulled to open the main body box 1 by the aid handle 408, when the isolating door 407 moves, the second linkage push rod 406 drives the center shaft of the bearing 403 to rotate, and when the center shaft of the bearing 403 rotates, the first linkage push rod 404 drives the driving block 405 to slide in the second sliding guide rail 402 and the bearing plate body 2 to move forward, and the staff can conveniently and the equipment is easy to maintain and the equipment to early warn the staff.
The embodiment of the invention also provides a three-phase load unbalance automatic commutation leveling system, which comprises an intelligent commutation terminal and the load switch commutation devices introduced above, wherein the intelligent commutation terminal is in communication connection with a plurality of load switch commutation devices. Referring to fig. 5, the load commutation switch device is composed of a LoRa communication circuit, a liquid crystal display circuit, a temperature measurement circuit, a voltage and current acquisition circuit and a commutation switch driving circuit; the LoRa communication circuit is used for receiving an instruction sent by the intelligent commutation terminal and completing switching of commutation actions; the current and voltage acquisition circuit acquires data of each phase and transmits the data to the phase change terminal in real time; the temperature measuring circuit is used for collecting temperature parameters of the circuit; the liquid crystal display circuit is used for displaying parameters such as temperature, voltage and current; the phase change switch driving circuit mainly drives a combined circuit formed by the electromagnetic relay and the thyristor to execute phase change action. In this embodiment, the intelligent commutation terminal acquires three-phase voltage and current data of the transformer area in real time through the data acquisition circuit, and the data transmission value DSP control unit, after data processing and operation, analyzes the unit current and voltage of the load switch commutation device received by the wireless communication module at the same time when the DSP control unit determines that the three-phase unbalance exceeds a specified threshold, and comprehensively makes a research and judgment to send a commutation instruction to the slave. The load switch commutation device obtains a commutation instruction through the Lora communication circuit, and performs commutation action through the commutation switch driving circuit, so that the whole commutation process is finished, and the three-phase load imbalance of the distribution transformer area is automatically leveled. In the embodiment, the Lora is adopted to realize the data communication between the intelligent commutation terminal and the load switch commutation device, the data stable transmission of the load is realized in a wireless mode, the zero-delay seamless commutation is realized, the power consumption of a user is not influenced by uninterrupted power supply, and the requirement of the power quality is met.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (8)
1. The utility model provides a load switch commutation device, includes main part box (1), its characterized in that: the novel intelligent automatic control device is characterized in that a bearing plate body (2) is arranged in the main body box body (1), an early warning mechanism (3) is arranged in the main body box body (1), the early warning mechanism (3) comprises a control center (301), the control center (301) is fixedly connected to the front side surface of the bearing plate body (2), a phase change switch (302) is arranged on the right side of the control center (301), the phase change switch (302) is fixedly connected to the front side surface of the bearing plate body (2), three power connection clamping grooves (303) are electrically connected to the upper surface and the bottom surface of the phase change switch (302), a closing mechanism (4) is arranged in front of the main body box body (1), the closing mechanism (4) comprises four first sliding guide rails (401), the four first sliding guide rails (401) are respectively and fixedly connected to the two inner side walls of the main body box body (1), four extension parts on the side surfaces of the bearing plate body (2) are respectively connected with the four inner wall sliding guide rails (401), and one end of the main body box body (1) is provided with four screw threads (5), and one end of the main body (5) is fixedly connected to the four screw threads (6);
rotating shaft groups (304) are arranged above and below the phase change switch (302), two rotating shaft groups (304) are fixedly connected to the front side surface of the bearing plate body (2), three binding posts (305) are fixedly connected to the outer surfaces of the rotating shafts of the two rotating shaft groups (304), and six binding posts (305) are respectively matched with six power connection clamping grooves (303);
rotating motors (308) are arranged above and below the control center (301), the two rotating motors (308) are fixedly connected to the front side surface of the bearing plate body (2), output rotating shafts of the two rotating motors (308) are fixedly connected with rotating shafts of the two rotating shaft groups (304) respectively, the two rotating motors (308) are electrically connected with the control center (301) through first built-in wires (309), and an alarm (310) is arranged above the control center (301);
when the phase change switch (302) works, if the load in the phase change switch is large, signals are transmitted to the inside of the control center (301), the control center (301) controls the rotating motor (308) to rotate after judging, and the rotating motor (308) drives the rotating shaft of the rotating shaft group (304) to rotate when rotating, so that the power connection clamping groove (303) is separated from the binding post (305), the phase change switch (302) is isolated, and then the alarm (310) is controlled to give an alarm.
2. The load switch commutation device of claim 1, wherein: the positive side of six terminal (305) all is connected with external wire (306), the top and the below of control center (301) all are provided with three fixed slot (307), six fixed slot (307) all inlay in the inner wall of main part box (1) and extend to the outside of main part box (1), six external wire (306) respectively with six fixed slot (307) assorted.
3. The load switch commutation device of claim 1, wherein: the alarm (310) is fixedly connected to the front side surface of the bearing plate body (2), the alarm (310) is electrically connected with the control center (301) through a second built-in wire (311), an alarm lamp (312) is arranged below the control center (301), the alarm lamp (312) is fixedly connected to the front side surface of the bearing plate body (2), and the alarm lamp (312) is electrically connected with the control center (301) through a third built-in wire (313).
4. The load switch commutation device of claim 1, wherein: two second sliding guide rails (402) are arranged between the four first sliding guide rails (401), the two second sliding guide rails (402) are respectively and fixedly connected to the upper surface and the bottom surface of the bearing plate body (2), two bearings (403) are respectively arranged above and below the two second sliding guide rails (402), and the four bearings (403) are respectively inlaid on the upper surface and the bottom surface of the main body box body (1).
5. The load switch commutation device of claim 4, wherein: four in bearing (403) axis is close to the equal fixedly connected with first linkage push rod (404) of a side of loading board body (2), two in the equal sliding connection of inner wall of second sliding guide (402) have two drive blocks (405), four in first linkage push rod (404) respectively with four in drive block (405) fixed connection, four in bearing (403) axis keep away from equal fixedly connected with second linkage push rod (406) of a side of loading board body (2).
6. The load switch commutation device of claim 5, wherein: two isolation doors (407) are arranged in front of the four first sliding guide rails (401), the four second linkage push rods (406) are hinged to the upper surfaces and the bottom surfaces of the two isolation doors (407) through pin shafts respectively, and the front side surfaces of the two isolation doors (407) are fixedly connected with power-assisted handles (408).
7. The utility model provides an unbalanced automatic commutation leveling system of three-phase load, includes intelligent commutation terminal, its characterized in that: the intelligent phase-change terminal also comprises a plurality of load switch phase-change devices according to any one of claims 1 to 6, and the intelligent phase-change terminal is in communication connection with the plurality of load switch phase-change devices.
8. The three-phase load imbalance automatic commutation leveling system of claim 7, wherein: the load switch phase-change device consists of a LoRa communication circuit, a liquid crystal display circuit, a temperature measuring circuit, a voltage and current acquisition circuit and a phase-change switch driving circuit;
the LoRa communication circuit is used for receiving an instruction sent by the intelligent commutation terminal and completing switching of commutation actions;
the voltage and current acquisition circuit acquires data of each phase and transmits the data to the phase-change terminal in real time;
the temperature measuring circuit is used for collecting temperature parameters of the circuit;
the liquid crystal display circuit is used for displaying parameters such as temperature, voltage and current;
the phase change switch driving circuit mainly drives a combined circuit formed by the electromagnetic relay and the thyristor to execute phase change action.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111568499.2A CN114374155B (en) | 2021-12-21 | 2021-12-21 | Load switch commutation device and three-phase load unbalance automatic commutation leveling system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111568499.2A CN114374155B (en) | 2021-12-21 | 2021-12-21 | Load switch commutation device and three-phase load unbalance automatic commutation leveling system thereof |
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| CN114374155A CN114374155A (en) | 2022-04-19 |
| CN114374155B true CN114374155B (en) | 2023-09-05 |
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| CN114374155A (en) | 2022-04-19 |
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