CN208835761U - Mechano-electronic is integrated switched, three-phase current unbalance adjusts device and system - Google Patents

Abstract

The utility model provides that a kind of mechano-electronic is integrated switched, three-phase current unbalance adjustment device and system, wherein the switch includes single chip control module and multiple groups switch combination, and each switch combination includes mechanical switch and electronic switch；Mechanical switch and electronic switch are connect with single chip control module respectively；Single-chip microcontroller controls the on-off for controlling mechanical switch and electronic switch, so that original phase is first from mechanical switching to electronic switch, then does alternate switching.By this way, in entire commutation process, single chip control module whole-process control is each mutually respectively to switch open close state, it notes abnormalities, terminates commutation, phase fault caused by reducing in commutation process and user's disconnection fault, three-phase current unbalance adjustment effect and user satisfaction are improved, is saved manpower and time.

Description

Mechano-electronic is integrated switched, three-phase current unbalance adjusts device and system

Technical field

The utility model relates to three-phase current unbalance adjustment technology fields, more particularly, to a kind of mechano-electronic integral type Switch, three-phase current unbalance adjust device and system.

Background technique

For three-phase imbalance in low-voltage electricity transmission line, low-voltage electricity transmission line mostly uses three-phase four-wire power supply, due to single-phase The access of electrical equipment is extremely difficult to and keeps three-phase balance state.Three-phase current unbalance will generate neutral line current, The more big then neutral line current of degree of unbalancedness is bigger.Neutral line current increases line loss, loss with by electric current square at just Than；In inside transformer, the zero sequence fluxes that zero-sequence current generates are formed into a loop by transformer tank wall and fastener, generate compared with Big eddy-current loss increases the iron loss of transformer.Using manually irregularly cannot be with the change of power load by single-phase load commutation Change adjustment in time, cause three-phase current unbalance adjustment effect unobvious, artificial commutation causes user to have a power failure, and it is satisfied to reduce user Degree, and waste of manpower and time.

In commutation process, three phase mains is introduced in terminal, the output of terminal is linked on user.When opening in certain phase When closing crossed belt electricity, the switch in other two-phases must assure that disconnection, just can guarantee that user power utilization is safe and reliable in this way；But due to Load current is had when commutation on switch terminal, equipment longtime running unavoidably causes terminal to damage, makes in commutation process At failure, leads to phase fault or cause user's disconnection fault.

Utility model content

In view of this, that the purpose of this utility model is to provide a kind of mechano-electronics is integrated switched, three-phase current is uneven Weighing apparatus adjustment device and system, reduce phase fault and user's disconnection fault caused by commutation process, it is uneven to improve three-phase current Weigh adjustment effect and user satisfaction, saves manpower and time.

In a first aspect, the utility model embodiment provides, a kind of mechano-electronic is integrated switched, and the switch application is in three The terminal of phase current imbalance automatic regulating apparatus, the switch include single chip control module and multiple groups switch combination, Mei Gekai Closing combination includes mechanical switch and electronic switch；Mechanical switch and electronic switch are connect with single chip control module respectively；Monolithic Machine control module is used to control the on-off of mechanical switch and electronic switch, so that original phase is first from mechanical switching to electronic cutting It closes, then does alternate switching.

With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect, In, which includes relay control module, relay monitoring modular and relay；Relay control module is for controlling The on-off of relay；Relay monitoring modular is for monitoring whether each mutually each switch on and off in commutation process has abnormal generation.

With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect, In, which includes Thyristor Control Module, silicon-controlled monitoring modular and silicon-controlled；Thyristor Control Module is for controlling Silicon-controlled on-off；Silicon-controlled monitoring modular is for monitoring whether each mutually each switch on and off in commutation process has abnormal generation.

With reference to first aspect or second of the first possible embodiment of first aspect or first aspect may be implemented Mode, the utility model provide the third possible embodiment of first aspect, wherein single chip control module includes control Coremaking piece, multiple single-chip microcontrollers control I/O foot and multiple single-chip microcontrollers monitor I/O foot；Single-chip microcontroller control I/O foot respectively with relay control Molding block is connected with Thyristor Control Module；Single-chip microcontroller monitor I/O foot respectively with relay monitoring modular and silicon-controlled monitoring mould Block connection；Control chip controls I/O foot with multiple single-chip microcontrollers respectively and single-chip microcontroller monitoring I/O foot is connect；Control chip is for connecing The switch on and off status information that relay monitoring modular and silicon-controlled monitoring modular are sent is received, is led to relay and silicon-controlled issue Break signal.

With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect, In, which further includes alarm；Alarm is connect with single chip control module；Alarm is for receiving single chip control module The warning message of transmission, and issue alarm warning.

The third possible embodiment with reference to first aspect, the utility model embodiment provide the 5th of first aspect The possible embodiment of kind, wherein the relay includes permanent-magnet relay.

With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, In, which includes reverse-blocking tetrode thyristor.

Second aspect, the utility model embodiment provide a kind of three-phase current unbalance automatic regulating apparatus, the device Including host and multiple terminals, which is set to terminal, which is set to three-phase current unbalance automatic adjustment system, should Device includes the switch of any of the above-described；Terminal and host are connect with three-phase current unbalance automatic adjustment system respectively.

In conjunction with second aspect, the utility model embodiment provides the first possible embodiment of second aspect, In, host includes monitoring unit and control unit；Terminal includes load monitoring unit and commutation unit.

The third aspect, the utility model embodiment provide a kind of three-phase current unbalance automatic adjustment system, the system It further include transformer and a plurality of clients including above-mentioned device；Transformer is connect with host；A plurality of clients respectively with it is multiple Terminal connection.

The utility model embodiment bring it is following the utility model has the advantages that

A kind of mechano-electronic provided by the embodiment of the utility model is integrated switched, three-phase current unbalance adjustment device and System, the switch are set to the terminal of three-phase current unbalance automatic regulating apparatus, the switch include single chip control module and Multiple groups switch combination, each switch combination include mechanical switch and electronic switch；Mechanical switch and electronic switch respectively with monolithic The connection of machine control module；Single-chip microcontroller controls the on-off for controlling mechanical switch and electronic switch, so that original phase is first from machinery Switching is to electronic switch, then does alternate switching.In which, in entire commutation process, single chip control module is whole It controls each phase and respectively switchs open close state, note abnormalities, terminate commutation, phase fault caused by reducing in commutation process and use Family disconnection fault.

Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating Specifically noted structure is achieved and obtained in book, claims and attached drawing.

To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and Cooperate appended attached drawing, is described in detail below.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not making the creative labor for those skilled in the art Under the premise of, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of structural schematic diagram that mechano-electronic is integrated switched provided by the embodiment of the utility model；

Fig. 2 is the integrated switched structural schematic diagram of another mechano-electronic provided by the embodiment of the utility model；

Fig. 3 is the integrated switched structural schematic diagram of another mechano-electronic provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of a kind of relay control and monitoring provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of a kind of SCR control provided by the embodiment of the utility model and monitoring；

Fig. 6 is a kind of three-phase current unbalance automatic regulating apparatus provided by the embodiment of the utility model；

Fig. 7 is a kind of structural representation of three-phase current unbalance automatic adjustment system provided by the embodiment of the utility model Figure；

Fig. 8 is a kind of three-phase current unbalance automatic adjustment system provided by the embodiment of the utility model；

Fig. 9 is a kind of phase-change switch design and operation schematic diagram provided by the embodiment of the utility model.

Specific embodiment

To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not making creation Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.

Existing phase-change switch is due to having load current in commutation on switch terminal, equipment longtime running is in commutation process In unavoidably terminal is caused to damage, cause switch contact damage or be not closed or do not separate, in turn result in two kinds Failure: 1, in the case where former mutually no disconnection in time, cenotype closure causes phase fault；2, in the case where former mutually disconnection, Cenotype is not closed in time, causes user's disconnection fault.

In view of existing phase-change switch in commutation process caused by phase fault and user's disconnection fault, this is practical new It is integrated switched that type embodiment provides a kind of mechano-electronic；The technology can be applied to three-phase current unbalance adjust automatically dress In the terminal set, it is particularly possible to be applied in three-phase current unbalance automatic adjustment system, to reduce alternate caused by commutation Short circuit and user's disconnection fault.

For convenient for understanding the present embodiment, first to a kind of mechano-electronic one disclosed in the utility model embodiment Body formula switch describes in detail.

A kind of integrated switched structural schematic diagram of mechano-electronic shown in Figure 1；The switch includes single-chip microcontroller control Module 10 and multiple groups switch combination, each switch composition includes mechanical switch 11 and electronic switch 12；The mechanical switch 11 and electricity Sub switch 12 is connect with single chip control module 10 respectively；Above-mentioned single chip control module 10 is for controlling mechanical switch 11 and electricity The on-off of sub switch 12 so that original Xiang Xiancong mechanical switch 11 is switched to electronic switch 12, then does alternate switching.

Specifically, one electronic switch of parallel connection controls mould by single-chip microcontroller when needing commutation beside each mechanical switch Block monitors the mechanical switch of original phase and target phase and the open close situation of controllable switch, make original phase first from mechanical switching to Electronic switch, then do alternate switching, i.e., target phase electronic switch is switched to by original phase electronic switch, finally makes target phase electronics It switchs and is switched to mechanical switch in phase, in entire commutation process, single chip control module whole-process control is each mutually respectively to switch open close shape State notes abnormalities, and terminates commutation.Alternate switching is completed using the non-contact way of electronic switch, converting commutating current is by electronic switch It undertakes, avoids the damage of mechanical terminal.

A kind of mechano-electronic provided by the embodiment of the utility model is integrated switched, which is set to three-phase current injustice The terminal of weighing apparatus automatic regulating apparatus, which includes single chip control module and multiple groups switch combination, and each switch combination includes Mechanical switch and electronic switch；Mechanical switch and electronic switch are connect with single chip control module respectively；Single-chip microcontroller control is used for The on-off of mechanical switch and electronic switch is controlled, so that original phase is first from mechanical switching to electronic switch, then does alternate cut It changes.In which, in entire commutation process, single chip control module whole-process control is each mutually respectively to switch open close state, finds different It is normal then terminate commutation, phase fault caused by reducing in commutation process and user's disconnection fault.

The integrated switched structural schematic diagram of another mechano-electronic shown in Figure 2；Switch machine shown in Fig. 1 It is realized on the basis of tool electronic integrated formula switch；The mechanical switch 11 includes relay control module 210, relay monitoring modular 211 and relay 212；Relay control module 210 is used to control the on-off of relay 212；Relay monitoring modular 211 is used for Whether each mutually each switch on and off has abnormal generation in monitoring commutation process；The electronic switch 12 include Thyristor Control Module 220, Silicon-controlled monitoring modular 221 and silicon-controlled 222；Thyristor Control Module 220 is used to control silicon-controlled 222 on-off；It is silicon-controlled Monitoring modular 221 is for monitoring whether each mutually each switch on and off in commutation process has abnormal generation.

The single chip control module 10 includes control chip 24, multiple single-chip microcontrollers control I/O foot 231 and multiple single-chip microcontrollers prison Survey I/O foot 232；Single-chip microcontroller control I/O foot 231 is connect with relay control module 210 and Thyristor Control Module 220 respectively； Single-chip microcontroller monitoring I/O foot 232 is connect with relay monitoring modular 211 and silicon-controlled monitoring modular 221 respectively；Control chip 24 divides I/O foot 231 is not controlled with multiple single-chip microcontrollers and multiple single-chip microcontrollers monitoring I/O foot 232 is connect；Control chip 24 is for receiving relay The exception information that device monitoring modular 211 and silicon-controlled monitoring modular 221 are sent issues on-off to relay 212 and silicon-controlled 222 Signal.

Above-mentioned electronic switch includes reverse-blocking tetrode thyristor, silicon-controlled to have the function of that small in size, structure is relatively easy, strong excellent Point.It is silicon-controlled that not only there is unilateral conduction in performance, also there is the controllability more more valuable than silicon rectifier cell, it is only There are turn-on and turn-off two states；It is silicon-controlled also to have many good qualities, such as: high-power, power amplification multiple is controlled with small-power Up to hundreds of thousands times；Reaction is exceedingly fast, and opens, turns off in Microsecond grade；Contactless operation, it is no-spark, noiseless；It is high-efficient, at This is low；It is silicon-controlled classify from shape mainly have: bolt shape, plate shaped and flat shape；Therefore this electronic switch can be used controllably Silicon semiconductor device.Above-mentioned relay includes permanent-magnet relay, since permanent-magnet material has wide hysteresis loop, high-coercive force, height Remanent magnetism can keep constant magnetism once magnetization, and common permanent-magnet material is divided into Al-Ni-Co series permanent-magnet alloy, siderochrome cobalt system permanent magnetism Alloy, permanent-magnet ferrite, rare earth permanent-magnetic material and composite permanent-magnetic material.

Above-mentioned switch further includes alarm, and alarm is connected with single chip control module；Due to beside each relay All silicon-controlled it is formed in parallel with one.The switching of electric current is mainly undertaken by electronic section in commutation process, do not damage in this way after The contact of electric appliance guarantees operational safety, and when relay is faulty, singlechip control chip can sound an alarm letter automatically Number, and system can also keep original energized state.

The integrated switched structural schematic diagram of another mechano-electronic shown in Figure 3；The switch is in Fig. 1 and Fig. 2 institute It is realized on the basis of the mechano-electronic shown is integrated switched；In commutation process, equipment uses mechanical switch great-power electronic It switchs the mode combined and carries out commutation, a high-power electronic switch in parallel beside each phase of mechanical switch.Such as work as master Machine sends instructions to No. 1 terminal, orders it to change B facies tract into from current A facies tract load and carries.Commutation process movement is as follows:

1, reset condition: A phase relay is logical, and other switches are disconnected.

2, switching in A phase phase:

A) it is silicon-controlled to connect A phase；

B) after monitoring state is correct, A phase relay is disconnected.

3, alternate switching:

A) after monitoring state is correct, it is silicon-controlled to disconnect A phase；

B) it is silicon-controlled that B phase is and then connected after monitoring state is correct；

C) it is disconnected to the silicon-controlled connection of B phase from A phase is silicon-controlled, the operation of two steps is completed in 20ms.

4, switching in B phase phase:

A) after monitoring state is correct, B phase relay is connected；

B) after monitoring state is correct, it is silicon-controlled to disconnect B phase.

5, monitoring state is correct, and commutation is completed.

If Fig. 4 is the structural schematic diagram that a kind of relay is controlled and monitored, Fig. 5 is the knot of a kind of SCR control and monitoring Structure schematic diagram, above-mentioned Fig. 4 and Fig. 5 are the integrated switched internal structure charts of mechano-electronic shown in Fig. 3；Mechanical part is by forever Magnetic relay is constituted, and electronic section is made of silicon-controlled, from the figure 3, it may be seen that can by a relay and one in each phase of A, B, C Control silicon is formed in parallel.The switching for mainly undertaking electric current by electronic section in commutation process, does not damage the contact of relay in this way, Guarantee operational safety, and when relay is faulty, system with automatic alarm and can keep original energized state.

A kind of three-phase current unbalance automatic regulating apparatus shown in Figure 6, the device include host 30 and multiple ends End (in Fig. 6 by taking three terminals as an example, respectively terminal 31, terminal 32 and terminal 33), above-mentioned switch is set to the device In terminal, which is set to three-phase current unbalance automatic adjustment system, and the terminal and host are uneven with three-phase current respectively The automatic adjustment system that weighs connection；The host includes monitoring unit and control unit；The terminal includes load monitoring unit and commutation Unit.

A kind of three-phase current unbalance automatic regulating apparatus provided by the embodiment of the utility model, the device are set to three-phase Current imbalance automatic adjustment system, the device include host and multiple terminals, which is set to terminal；The switch includes single Piece machine control module and multiple groups switch combination, each switch combination include mechanical switch and electronic switch；Mechanical switch and electronics Switch is connect with single chip control module respectively；Single-chip microcontroller controls the on-off for controlling mechanical switch and electronic switch, so that Original phase is first from mechanical switching to electronic switch, then does alternate switching.In which, in entire commutation process, monolithic Machine control module whole-process control is each mutually respectively to switch open close state, notes abnormalities, terminates commutation, reduces in commutation process and cause Phase fault and user's disconnection fault.

A kind of structural schematic diagram of three-phase current unbalance automatic adjustment system shown in Figure 7, the system include: to become Depressor 40, above-mentioned three-phase current unbalance automatic regulating apparatus, a plurality of clients are (in Fig. 7 by taking three user terminals as an example, respectively User terminal 41, user terminal 42 and user terminal 43), which includes the master being connected with transformer Machine and the multiple terminals being connected respectively with a plurality of clients, host can monitor the load condition of user terminal and according to load feelings Condition determines whether terminal executes commutation operation.Host includes monitoring unit and control unit, and terminal includes user terminal load monitoring Unit and phase-change switch, monitoring unit are connect with user terminal load monitoring unit communication, for obtaining the load data of user terminal, Control unit and phase-change switch communicate to connect, for determining whether phase-change switch executes commutation behaviour according to the load condition of user terminal Make.

Equipment uses the direct phase change method of load, by the fractional load commutation in load phase big in A, B, C three-phase to load Small or lesser phase gets on, and makes load relative equilibrium using automatic commutation method.And when guaranteeing commutation in commutation process Between less than 20 milliseconds, that is to say, that customer outage time is less than 20 milliseconds.Association is manufactured according to american computer and business machine (CBEMA) it is requirement of the mainframe computer to power quality the 1980s, proposes voltage tolerant and four kinds relevant Typical voltage disturbance (voltage falling, voltage rises, spike and power-off), with prevent voltage disturbance cause computer and its The malfunction and damage of control device, and claimed ITIC curve.ITIC curve is that current estimation of transient power quality event influences One important evidence, when power is off between less than 20 milliseconds in the case of electrical equipment do not influence to run, that is, electrical equipment will not Had a power failure.

According to the three-phase electricity flow valuve of transformer outlet, when current unbalance factor be more than the threshold value of setting for a period of time after, It is illustrated in figure 8 a kind of three-phase current unbalance automatic adjustment system, such as when A phase current highest, B phase current is minimum, host To some or certain one, the several terminals instruction run in A phase, order terminal runs commutation by A phase and runs to B phase.Work as needs When adjustment is uneven, load and locating phase of the host according to each terminal are specifically sent out to a terminal or several terminals Commutation order is sent, it can be by on-load commutation to underload phase in high load capacity phase.According to the above basic situation, Ying The several terminals of user terminal multi-configuration are evenly distributed in each phase of A, B, C, guarantee can have terminal in institute when needing to adjust in this way In the phase to be adjusted.Situation is simultaneously uploaded to host in real time by the current value of terminal real-time testing user and locating phase.

Three phase mains is introduced in terminal, the output of terminal is linked on user.In certain phase when closing the switch electrification, Switch in other two-phases must assure that disconnection, just can guarantee that user power utilization is safe and reliable in this way.Specific phase-change switch design Operation schematic diagram is as shown in figure 9, this G- Design thinking in actual use, has load electricity on switch terminal when due to commutation Stream, equipment longtime running unavoidably cause terminal to damage in commutation process, and switch contact is caused to damage or be not closed It does not separate, in turn results in failure.

Mechanical switch commutation using zero crossing commutation mode.In actual application because of switching point belt current Load longtime running will cause electric shock and damage and then unavoidably cause short-circuit conditions, therefore in purely mechanic commutation mode It needs to connect again one below in switch in equipment and be spaced apart, when equipment occurs to be spaced apart tripping under short-circuit conditions and disconnect user rapidly Power supply avoids serious accident, but will cause user's power failure.

Machinery electronic integral phase-change switch, because commutation is all that electronic switch undertakes current commutation load every time, Contact is safe and reliable.Even if there are the plant issues such as relay failure in ageing equipment, but due to device action due to longtime running Before after have judgement and logic analysis circuit, if gone wrong inside equipment in commutation process, phase-change switch can It is worked with being maintained in former energized phase, alarm and exits participation commutation process, do not influence user power utilization.

Mechano-electronic provided by the utility model embodiment is integrated switched, three-phase current unbalance adjusts device and is The computer program product of system, the computer readable storage medium including storing program code, the instruction that program code includes It can be used for executing the method in previous methods embodiment, specific implementation can be found in embodiment of the method, not repeat herein.

In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can To be the connection inside two elements.To those skilled in the art, above-mentioned term can be understood in this reality with concrete condition With the concrete meaning in novel.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

Finally, it should be noted that above embodiments, only specific embodiment of the present utility model, to illustrate that this is practical Novel technical solution, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned implementation The utility model is described in detail in example, it should be understood by those skilled in the art that: any skill for being familiar with the art Art personnel within the technical scope disclosed by the utility model, can still carry out technical solution documented by previous embodiment Modification can readily occur in variation or equivalent replacement of some of the technical features；And these are modified, change or replace It changes, the spirit and scope for the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution should all cover It is within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with scope of protection of the claims It is quasi-.

Claims (10)

1. a kind of mechano-electronic is integrated switched, which is characterized in that the switch is set to three-phase current unbalance adjust automatically The terminal of device, the switch include single chip control module and multiple groups switch combination, and each switch combination includes machinery Switch and electronic switch；

The mechanical switch and the electronic switch are connect with the single chip control module respectively；

The single chip control module is used to control the on-off of the mechanical switch and the electronic switch, so that original Xiang Xiancong The mechanical switch is switched to the electronic switch, then does alternate switching.

2. switch according to claim 1, which is characterized in that the mechanical switch includes relay control module, relay Device monitoring modular and relay；

The relay control module is used to control the on-off of the relay；The relay monitoring modular is for monitoring commutation Whether each mutually each switch on and off has abnormal generation in the process.

3. switch according to claim 2, which is characterized in that the electronic switch includes Thyristor Control Module, controllable Silicon monitoring modular and silicon-controlled；

The Thyristor Control Module is for controlling the silicon-controlled on-off；The silicon-controlled monitoring modular is for monitoring commutation Whether each mutually each switch on and off has abnormal generation in the process.

4. switch according to claim 3, which is characterized in that the single chip control module includes control chip, multiple Single-chip microcontroller controls I/O foot and multiple single-chip microcontrollers monitor I/O foot；

The single-chip microcontroller control I/O foot is connect with the relay control module and the Thyristor Control Module respectively；It is described Single-chip microcontroller monitoring I/O foot is connect with the relay monitoring modular and the silicon-controlled monitoring modular respectively；The control chip It is connect respectively with multiple single-chip microcontroller control I/O feet and multiple single-chip microcontrollers monitoring I/O foot；

The control chip is used to receive the switch on and off that the relay monitoring modular and the silicon-controlled monitoring modular are sent Status information, Xiang Suoshu relay and the silicon-controlled sending on-off signal.

5. switch according to claim 1, which is characterized in that the switch further includes alarm；

The alarm is connect with the single chip control module；

The alarm is used to receive the warning message that the single chip control module is sent, and issues alarm warning.

6. switch according to claim 2, which is characterized in that the relay includes permanent-magnet relay.

7. switch according to claim 1, which is characterized in that the electronic switch includes reverse-blocking tetrode thyristor.

8. a kind of three-phase current unbalance automatic regulating apparatus, which is characterized in that described device includes host and multiple terminals, institute It states switch and is set to the terminal, described device is set to three-phase current unbalance automatic adjustment system, and described device includes power Benefit requires the described in any item switches of 1-7；

The terminal and host are connect with the three-phase current unbalance automatic adjustment system respectively.

9. device according to claim 8, which is characterized in that the host includes monitoring unit and control unit；It is described Terminal includes load monitoring unit and phase-change switch.

10. a kind of three-phase current unbalance automatic adjustment system, which is characterized in that the system comprises claim 8-9 is any Device described in, further includes transformer and a plurality of clients；The transformer is connect with the host；The multiple user terminal It is connect respectively with multiple terminals.