CN104377816B - A kind of control method of intelligentized reclosing breaker and its automatic reclosing - Google Patents
A kind of control method of intelligentized reclosing breaker and its automatic reclosing Download PDFInfo
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- CN104377816B CN104377816B CN201410624861.7A CN201410624861A CN104377816B CN 104377816 B CN104377816 B CN 104377816B CN 201410624861 A CN201410624861 A CN 201410624861A CN 104377816 B CN104377816 B CN 104377816B
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
A kind of intelligentized reclosing breaker, including operating mechanism, electric current, detection of electrical leakage module and power module, be connected to main circuit and enter line side and the voltage detection module from contact apparatus rear end, recloser mechanism, control unit and the signal interaction module for being connected thereto and carrying out signal data interaction.According to the control method of automatic reclosing, which voltage class failure user can set by signal interaction module needs tripping operation, which instantaneous voltage class failure to allow automatic reclosing, the preset threshold parameter automatic decision of current signal, voltage signal and the signal interaction module that control unit is inputted according to each detection module and whether control operation mechanism performs tripping operation.After instantaneous voltage or current capacity failure cause tripping operation, the preset threshold parameter automatic decision of voltage signal and signal interaction module that control unit is collected according to voltage detection module after circuit breaker trip confirms whether the failure allows to recover and control whether recloser mechanism performs recloser.
Description
Technical field
The present invention relates to a kind of intelligentized reclosing breaker, can by user by different power supply places the need for set
Select the control method of automatic reclosing, either occur instantaneous voltage class failure (including instantaneous over-pressed, under-voltage, disconnected phase,
The failure such as off zero) or instantaneous residual current failure after, perform reclosing before can be according to fault type intellectual determination and control
System carries out automatic reclosing.
Background technology
With the popularization of development and the upgrade of rural power grids of low-voltage electrical apparatus, traditional residual current action breaker due to
Its function is single can not to meet the requirement of intelligent grid, to improve the high continuation of electricity consumption and realizing network management and long-range
, has there is the miscellaneous comprehensive breaker for being provided simultaneously with automatic reclosing function on the market in monitoring, mainly traditional
Increase motor-operating mechanism on residual current action breaker to realize reclosing function, but due to country's mark of reclosing product
It is accurate it is formal put into effect, the requirement to reclosing breaker still needs to constantly perfect, and producer can only enter according to the market demand with experience
Row design, the construction cycle is all very short for the blank for accelerating to fill up upgrading of rural power grids demand, and design is still far from perfect, and its function is still located
In the level for being only capable of the automatic reclosing after residual current fault trip, supplied with meeting the circuit power network that resumes operation and improve automatically
The successional general requirement of electricity.At present, the jump of current capacity failure is had been realized in existing residual current action breaker
Lock, and can be specific to various fault types such as current overload, short circuit and electric leakages.However, much carrying automatic reclosing function
Product can not be thus realized for pairs of automatic reclosing function after voltage class fault recovery not with voltage sampling circuit
The residual current action breaker applied in such as rural power grids, there is a perceived need to it can be directed to voltage class fault trip, and energy
Automatic reclosing after tripping, to recover normal power supply automatically.
Chinese utility model patent CN201656420U discloses a kind of three-phase auto reclosing electricity leakage protection switch, by micro-
Supply voltage that control system module is detected according to voltage detection module, current detection module and detection of electrical leakage module and short
The signals such as road, overload, electric leakage, control relay drive module performs tripping operation or closed a floodgate, and electricity is powered to circuit before combined floodgate
The electric leakage of too high or too low abnormality detection, the circuit of pressure or short-circuit detecting.This use voltage, the coincidence of electric current complete detection
Lock strategy realizes that difficulty is big, or even the problem that presence can not be realized, such as before reclosing, because breaker is in tripped condition,
I.e. circuit is in disjunction state, therefore can not detect the electric leakage in circuit or short circuit current flow.Moreover, according to supply voltage, line
The electric leakage on road or the detection of short-circuit signal control to trip or closed a floodgate, it is necessary to complicated powerful micro control system module
Technical support, the manufacturing cost for thereby resulting in micro control system module is high, small-sized therefore, it is difficult to what is used in rural power grids
It is practical in residual current action breaker.
The B of Chinese invention patent CN 101447661 disclose a kind of control method of the controller for automatic reclosing,
Only for the situation for occurring needing to perform reclosing after instantaneous voltage class failure, the monolithic in the signal processing unit of its controller
The three-phase voltage signal that machine is detected to signal input unit carries out under-voltage, decompression and judged and voltage change ratio processing, and according to
The breaker in under-voltage, decompression and voltage change ratio control downstream performs separating brake and combined floodgate.It is this by three-phase voltage rate of change come
Judge the whether abnormal control method of voltage, it is more common in high voltage supply system, but be applied to low-voltage power supply system, then by
In the support for needing divide-shut brake to detect circuit and its divide-shut brake signal, hence in so that the software and hardware structure of control system is very multiple
Miscellaneous, not only cost is high, and is difficult to be placed in small-sized residual current action breaker.And judge overload with voltage change ratio
And short circuit, it is impossible to directly reflect the exception of electric current, it detects that the method and its equipment of overload and short circuit are broken with residual current acting
Road device it is entirely different (residual current action breaker uses current transformer, it can detect overload electric current, short circuit electricity
Stream and residual current), therefore must the multiple extra modular units of increase on residual current action breaker.In addition, these are existing
There is reclosing low-voltage circuit breaker to judge the type of tripping operation, different automatic weights can not be used according to different tripping types
Shutting-brake control countermeasure, therefore, they do not have intelligentized reclosing function also actually.
In addition, automatic reclosing is realized on residual current action breaker, generally using unconditional limit time reclosing
Strategy, i.e., in the certain time (such as 20s~60s) after instantaneous residual current fault trip, breaker can start automatically
Reclosing, i.e., do not do the detection of circuit parameter before reclosing.The strategy of this unconditional reclosing is commonly used always
So far the reason for is probably to think that leak current fault is unrelated with the voltage of mains side in people's subconsciousness, in other words, it is believed that current capacity
Fault trip is only relevant with load-side current anomaly, therefore, not will recognize that and voltage detecting is carried out before automatic reclosing and is met
Voltage normally just allows the characteristics of combined floodgate, conventional residual current action breaker to be not have voltage detecting function, even if having
Voltage detecting function, then do not detect the voltage of mains side, in other words yet, it is believed that electricity can not be detected under tripping operation or gate-dividing state
Pressure.However, the manufacture of long campaigns breaker applicant have observed that, the current overload of residual current action breaker, short circuit and
The reason for current capacity fault trips such as electric leakage, the current failure of the load-side of breaker is not only in that, but also because breaker
Mains side voltage failure, even the current signal detected according only to current sensing means such as Current Mutual Inductances performs tripping operation
Residual current action breaker, the voltage signal of the mains side of breaker is also implied in its current signal.Such as thundering, under
In the case of windscreen wiper wind, when circuit breaker electric source circuit because moist branch it is instantaneous when leaning against on a live wire, can lead
Circuit breaker trip is caused, because thunderbolt causes the instantaneous voltage pulsation of the circuit to also result in circuit breaker trip, it is possible to go out
There is the situation of voltage failure during execution reclosing after leak current fault recovery again, or held after voltage failure recovery
There is the situation of voltage failure during row reclosing again, this causes the reclosing open circuit for not possessing voltage detecting function into line side
The situation for ignoring circuit current voltage is venturesomely carried out disposable reclosing by device, and this will bring electricity consumption to pacify to subordinate equipment
Full hidden danger.
The content of the invention
In order to overcome many defects of above-mentioned prior art, the present invention is in the existing residue with automatic reclosing function
On the basis of electric current action breaker, it is desirable to provide a kind of controlling party of intelligentized reclosing breaker and its automatic reclosing
Method, can not only be realized for instantaneous residual current class failure or for instantaneous voltage class fault trip, and can also root
Different automatic reclosing control ways is used according to different tripping types, the intelligentized control method of low pressure reclosing breaker is realized,
Especially ensure power supply continuity while, moreover it is possible to maximize security, completely eliminate existing reclosing breaker to
The Electrical Safety hidden danger that subordinate equipment may be brought.
To achieve the above object, present invention employs following technical scheme.
A kind of intelligentized reclosing breaker, includes contact apparatus 11, the control contact apparatus of control main circuit on/off
Operating mechanism 12, current detection module 21, detection of electrical leakage module 22 and the power module 40 of 11 closures/disjunction, it is characterised in that：
Described breaker also includes being connected to the voltage detection module 23 that main circuit enters line side and the rear end of contact apparatus 11, and
Recloser mechanism 13, control unit 30 and the signal friendship that signal data interaction is connected and carried out with described control unit 30
Mutual module 31；Described voltage detection module 23 will be adopted from input A, B, C, N of main circuit and the rear end of contact apparatus 11 respectively
Each phase voltage signal collected is exported to described control unit 30, and current detection module 21 and detection of electrical leakage module 22 respectively will
From the output terminals A of main circuit ', each phase current signal for collecting of B ', C ', N ' exported to described control unit 30；Described
Current signal, voltage that control unit 30 is inputted according to current detection module 21, detection of electrical leakage module 22, voltage detection module 23
Signal and the preset threshold parameter automatic decision of described signal interaction module 31 simultaneously control whether described operating mechanism 12 is held
Row tripping operation；Voltage signal and signal that described control unit 30 is collected according to voltage detection module 23 after circuit breaker trip
The preset threshold parameter automatic decision of interactive module 31 simultaneously controls whether described recloser mechanism 13 performs electronic coincidence
Lock.
It is preferred that：Described control unit 30 include current signal conditioning circuit, voltage signal conditioning circuit, single-chip microcomputer and
Drive circuit, the current signal inputted from current detection module 21 and detection of electrical leakage module 22 is electric through described current signal conditioning
Exported after the processing of road to single-chip microcomputer, the voltage signal inputted from voltage detection module 23 is defeated after being handled through voltage signal conditioning circuit
Go out to single-chip microcomputer, described single-chip microcomputer control drive circuit performs tripping operation/automatic reclosing.
It is preferred that：Described voltage detection module 23 uses optocoupler and AD sample circuits.
It is preferred that：Each phase voltage signal that described voltage detection module 23 is gathered includes over-pressed signal, under-voltage signal, lacked
Phase signals and signal off zero.
It is preferred that：It is defeated that described signal interaction module 31 includes liquid crystal display circuit, the indicating circuit of working condition, button
Enter circuit and communication interface circuit.
It is preferred that：Current transformer and zero sequence electricity is respectively adopted in described current detection module 21 and detection of electrical leakage module 22
Current transformer.
It is preferred that：Described power module 40 includes rectified three-phase circuit and bleeder circuit, and rectified three-phase circuit is from main electricity
Input A, B, C, N power taking on road, bleeder circuit is respectively to voltage detection module 23, the motor of recloser mechanism 13, letter
Number interactive module 31 and control unit 30 provide the DC voltage of adaptation.
It is preferred that：Each phase current signal that described current detection module 21 and detection of electrical leakage module 22 are gathered includes short circuit
Current signal, overload current signal and residual current signal.
A kind of control method of automatic reclosing for intelligentized reclosing breaker of the invention, comprises the following steps：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class event by signal interaction module 31
Barrier allows automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, judged to confirm the voltage class for causing tripping operation event by control unit 30
Whether barrier belongs to the instantaneous voltage class failure of permission, if step B judged results are yes, continues step C；If step B
Judged result is no, then is transferred to step F；
C. voltage detection module 23 is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit 30
Barrier, if step C judged results are yes, continues step D；If step C judged results are no, step E is transferred to；
D. control unit 30 does not start reclosing, and control signal interactive module 31 performs alarm, points out the defeated of main circuit
Enter to hold A, B, C, N voltage abnormal, until voltage recovers normal automatic reclosing again；
E. control recloser mechanism 13 to perform automatic reclosing and operate by control unit 30 to be controlled by control unit 30
Recloser mechanism 13 performs automatic reclosing operation；
F. judge that identifying whether is tripped as caused by instantaneous leak current fault, if step F judged results are yes, is returned
Return step C；If process F judged results are no, step E is directly transferred to.
The control method of another automatic reclosing for intelligentized reclosing breaker of the invention, including following step
Suddenly：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class event by signal interaction module 31
Barrier allows automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, judged to confirm the voltage class for causing tripping operation event by control unit 30
Whether barrier belongs to the instantaneous voltage class failure of permission, if step b judged results are no, step c is transferred to, if step b sentences
Disconnected result is yes, is transferred to d；
C. control recloser mechanism 13 to perform automatic reclosing by control unit 30 to operate；
D. voltage detection module 23 is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit 30
Barrier, if step d judged results are no, is transferred to step c；If process d judged results are yes, step e is transferred to；
E. control unit 30 does not start reclosing, and control signal interactive module 31 performs alarm, points out the defeated of main circuit
Enter to hold A, B, C, N voltage abnormal, until voltage recovers normal automatic reclosing again.
Existing residual current action breaker is more powerful for the function of current detecting, and for the voltage of mains side
Detection is often lacked, although the signal of residual current can reflect the electric voltage exception of partial power side indirectly, can not be reflected comprehensively,
Particularly some important electric voltage exceptions, it is for example over-pressed, under-voltage as caused by due to lightning or upper end switching manipulation, break equal electricity
Instantaneous failure of die mould etc., even if the existing automatic reclosing product with voltage sampling circuit, is also tended to as one
The measurement of kind of phase voltage and display function, not applied to the automatic reclosing after voltage class fault recovery, do not consider for
If as the basis for preventing reclosing when occurring voltage failure during performing reclosing again.And use the present invention's
Any of the above-described technical scheme, can automatic reclosing (abbreviation electric leakage class automatic reclosing after it can realize that instantaneous leak current fault recovers
Lock) breaker on the basis of introduce voltage sampling circuit entering line side, realize to can be weighed automatically after voltage class fault recovery
The function (abbreviation voltage class automatic reclosing) of combined floodgate, holds by the voltage detecting of reasonable applied power source side and according to voltage detecting
The strategy of row automatic reclosing, can not only lift the intelligence degree of automatic reclosing, can fast and safely recover all kinds of moments
Property failure, while also improve the grade of residual current action breaker safety protection function, further improve reclosing production
Product for instantaneous failure power supply continuity, and using voltage monitoring as reclosing foundation, ensure power supply continuity
While, if when there is voltage failure again during performing reclosing, can immediately stop reclosing, and not as existing
There is technology risk to carry out disposable reclosing, add the security reliability of power supply, the perfect definition to reclosing product.
Brief description of the drawings
This hair can be seen more clearly from the description of the specific embodiment of residual current action breaker shown in the drawings
Bright advantages and features, wherein：
Fig. 1 is the structured flowchart for schematically illustrating the intelligentized reclosing breaker of the present invention.
Fig. 2 is the internal structure floor map of the intelligentized reclosing breaker of the present invention.
Fig. 3 be the intelligentized reclosing breaker of the control present invention coincidences control process in included the first implementation
Control process flow chart, shows the automatic reclosing process after being tripped caused by instantaneous voltage class failure.
Fig. 4 be the intelligentized reclosing breaker of the control present invention coincidences control process in included the second implementation
Control process flow chart, shows the automatic reclosing process after being tripped caused by instantaneous leak current fault.
Embodiment
With reference to the embodiment of Fig. 1 to Fig. 2 residual current action breakers provided, the intelligence of the present invention is further illustrated
The embodiment of the reclosing breaker of energyization, they are the description of the invention, rather than limitation of the present invention.
For the limitation in terms of existing product function and security, intelligentized reclosing breaker bag of the invention
Include contact apparatus, operating mechanism, recloser mechanism, for detecting that main circuit A-A ', B-B ', C-C ', N-N ' respectively mutually flow through
Size of current current detection module, for detecting the residual current size in main circuit A-A ', B-B ', C-C ', N-N '
Detection of electrical leakage module, voltage detection module, control unit, signal for the real-time input terminal voltage situation for monitoring main circuit are handed over
Mutual module and power module, by taking the residual current action breaker shown in Fig. 1 to Fig. 2 as an example, the reclosing breaker includes control
The contact apparatus 11 of main circuit on/off processed, control contact apparatus 11 close/operating mechanism 12 of disjunction, current detection module 21,
Detection of electrical leakage module 22, control unit 30, voltage detection module 23, recloser mechanism 13, signal interaction module 31 and electricity
Source module 40.Signal interaction module 31 can set preset threshold parameter at the scene according to requirements, and these parameters include
Which voltage class failure needs tripping operation, which instantaneous voltage class failure to allow automatic reclosing, voltage class to trip and electric current
The information such as threshold value, the delay length of automatic reclosing of class tripping operation so that after tripping operation the threshold parameter of automatic reclosing can by with
Family selection setting, the voltage condition of the input for the main circuit that breaker can be monitored according to the threshold parameter of setting with implementation is certainly
Whether dynamic control recloser mechanism performs automatic reclosing, and the intelligence of residual current action breaker is further lifted with this
Change level, further improve circuit breaker safe class, particularly can effectively exclude main circuit input overvoltage,
The potential safety hazard of the electric voltage exception such as under-voltage, phase shortage, off zero.The control method of the automatic reclosing of the present invention is included in instantaneous electricity
Press during the automatic reclosing after being tripped caused by class failure and instantaneous leak current fault, add and monitor main circuit in real time
The process of the voltage condition of input, and reclosing is performed again under the conditions of voltage is normal, in the case of voltage is abnormal
Into the process of real-time monitoring voltage, until the normal execution reclosing automatic again of voltage, it is ensured that only when voltage is normal
Under the conditions of just allow close a floodgate.
Current detection module 21 and detection of electrical leakage module 22 can have a variety of implementations, a kind of preferred mode such as Fig. 2 institutes
Show, current transformer and zero sequence current mutual inductor is respectively adopted in described current detection module 21 and detection of electrical leakage module 22, its
Advantage is, simple in construction, and measurement accuracy, sensitivity and reliability etc. are all more satisfactory.The described He of current detection module 21
Each phase current signal that detection of electrical leakage module 22 is collected includes short circuit current flow signal, overload current signal and residual current letter
Number, these current signals are that reflection main circuit the baseband signal of current capacity failure occurs, and are also implied in these baseband signals
The unbalanced signal of each phase voltage of main circuit, these signals can be implied in other class fault-signals, such as residual current signal
It is possible as input A, B, C, N of main circuit electric voltage exception.
Voltage detection module 23 in Fig. 1 is used for the voltage signal and reality for gathering input A, B, C, N of main circuit in real time
When collection contact apparatus 11 rear end voltage signal, and each phase voltage signal collected is exported to control unit 30.Voltage
Detection module 23 can have a variety of implementations, and preferably, described voltage detection module 23 uses optocoupler and AD to one kind
Sample circuit, the advantage is that, simple in construction, and the type and quantity of the electronic component used are few, and manufacturing cost is low, reliability
It is good.Over-pressed (voltage exceeds normal range (NR)) is essentially consisted in due to the harm of input A, B, C, N electric voltage exception of main circuit, it is under-voltage
(voltage low pressure normal range (NR)), phase shortage (thering is a phase voltage to be zero in A, B, C three-phase firewire), (zero line N disconnections) off zero, voltage inspection
Surveying each phase voltage signal of the collection of module 23 mainly includes over-pressed signal, under-voltage signal, default phase signal and signal off zero, the present invention
Enter line side using after voltage detection module 23, can there is over-pressed, under-voltage, phase shortage in input A, B, C, N of main circuit, it is off zero
Deng voltage class failure when start and can recover normal trip protection automatically, and in automatic reclosing, must first exclude main circuit
Ability reclosing after the voltage class failure such as the over-pressed, under-voltage of input A, B, C, N, phase shortage, off zero, because the voltage of the present invention is adopted
Sample circuit is introduced in end of incoming cables, and no matter breaker is in separating brake or "on" position, and current voltage can be monitored in real time.It is no matter right
In electric leakage class automatic reclosing or voltage class automatic reclosing, it is required to judge whether current voltage meets before coincidence is performed
Setting value, accomplishes not close a floodgate blindly, it can be ensured that the continuity of power supply and the security of reclosing operation.
Signal interaction module 31 shown in Fig. 1 can have a variety of implementations, and one kind preferably, hand over by described signal
Mutual module 31 includes liquid crystal display circuit, the indicating circuit of various states, button inputting circuits and communication interface circuit.Liquid crystal
Show that circuit includes LCDs (not shown), chart, parameter can be achieved and shows, while being also interactive display window
Mouthful.The indicating circuit of various states includes the indicator lamp of various states, such as indicator of the power supply status, "on" position indicator lamp, point
Lock status indicator lamp etc., with the running status of breaker directly perceived.Button inputting circuits include button group (not shown) and pressed
Button group (not shown), button group is used to key in data (such as various threshold parameters), instruction to the single-chip microcomputer of control unit 30,
Button groups are used to start or switching state (such as trial jump button).Communication interface circuit is used to provide various communication interfaces, and these connect
Mouth can be used for telecommunication, control, detection etc..Obviously, after the present invention is using signal interaction module 31, following effect can effectively be realized
Really：It is available for the condition of user's selection setting tripping operation and automatic reclosing and for human-computer dialogue and telecommunication, control, detection
Function, further to lift intelligent level.
In Fig. 1,2, contact apparatus 11 includes moving contact, static contact, arc quenching system etc., can be using known structure type
Realize, main circuit (A-A ' as shown in Figure 1, B-B ', C-C ', N-N ') on/off is controlled by moving contact, static contact, i.e.,：Touching
When the moving contact of the head each phase of device 11 is closed with static contact, main circuit A-A ' is connected, B-B ' is connected, C-C ' is connected, N-N ' is connected；
When the moving contact of each phase of contact apparatus 11 is with static contact disjunction, main circuit A-A ' disconnects, B-B ' disconnects, C-C ' disconnects, N-N '
Disconnect.Closure/disjunction of contact apparatus 11 is controlled by operating mechanism 12, and it includes combined floodgate, separating brake, three kinds of groundwork shapes of tripping operation
State, tripping operation is to cause operating mechanism 12 to perform by the actuation device (such as magnetic flux electrical apparatus release, figure not shown in) of control unit 30 to touch
The disjunction of head device 11.Operating mechanism 12 can use known structure type to realize, including the tripping mechanism not shown in figure etc..
Control unit 30 shown in Fig. 1 can have a variety of implementations, and preferably, described control unit 30 includes electric current to one kind
Signal conditioning circuit, voltage signal conditioning circuit, single-chip microcomputer and drive circuit, current detection module 21 and detection of electrical leakage module 22
The current signal of input is exported after being handled through current signal conditioning circuit to single-chip microcomputer, the voltage letter that voltage detection module 23 is inputted
Exported after number being handled through voltage signal conditioning circuit to single-chip microcomputer, current signal conditioning circuit is used for the He of current detection module 21
The current signal that detection of electrical leakage module 22 is inputted is converted into meeting the signal type of single-chip microcomputer input requirements.Similarly, voltage signal
Modulate circuit is used for the signal type that the voltage signal that inputs voltage detection module 23 is converted into meeting single-chip microcomputer input requirements.
Single-chip microcomputer control drive circuit performs tripping operation/automatic reclosing.Described drive circuit includes multiple loops, and these loops are equal
On/off is controlled by the output signal of single-chip microcomputer, actuation device is serially connected with these loops (as performed the tripping operation of operating mechanism 12
Magnetic flux electrical apparatus release, performs the combined floodgate of recloser mechanism 13 or the motor of separating brake, not shown in figure).Single-chip microcomputer is using logical
Device realizes that it has embedded control program and keys in the data interaction interface (not shown) of control parameter, and
The input/output pin (not shown) of signal data, data interaction interface is connected with signal interaction module 31, and each input is drawn
Pin is connected with each signal conditioning circuit respectively, and each output pin is connected with each drive circuit respectively.
Recloser mechanism 13 in Fig. 1,2 includes motor (not shown) and transmission mechanism.Turn of motor
It is dynamic/to stop being controlled by control unit 30, be specifically by the drive circuit of control unit 30 control motor electric power loop it is logical/
Disconnected, when electric power loop is connected, motor rotation, the rotation of motor drives operating mechanism 12 to perform combined floodgate by transmission mechanism
Operation.Motor uses direct current micromotor, and dc source can be provided by power module 40.Described power module 40 can have a variety of
Implementation, preferably, described power module 40 includes rectified three-phase circuit and bleeder circuit, three phase rectifier to one kind
Circuit is from input A, B, C, N power taking of main circuit, and bleeder circuit is respectively to voltage detection module 23, recloser mechanism 13
Motor, signal interaction module 31 and control unit 30 DC voltage of adaptation is provided.Obviously, the present invention using this structure and
After the power module 40 of connected mode, following beneficial effect can be produced：Under tripping operation, gate-dividing state, voltage detection module 23, electricity
Dynamic coincidence brake mechanism 13, signal interaction module 31 and control unit 30 can also normal works；In input A, B, C, N of main circuit
When there is open-phase fault, it also can guarantee that voltage detection module 23, recloser mechanism 13, signal interaction module 31 and control are single
Member 30 can also normal work.
By described above, voltage detection module 23 of the invention is by respectively from input A, B, C, N of main circuit
And each phase voltage signal that the rear end of contact apparatus 11 is collected is exported to control unit 30, current detection module 21 and detection of electrical leakage
Module 22 is by from the output terminals A of main circuit ', each phase current signal for collecting of B ', C ', N ' exported to control unit 30, signal
Interactive module 31 is connected with control unit 30 and carries out signal data interaction, and control unit 30 is according to current detection module 21, leakage
Current signal, voltage signal and the preset threshold value of signal interaction module 31 that electro-detection module 22, voltage detection module 23 are inputted
Simultaneously whether control operation mechanism 12 performs tripping operation to parameter automatic decision, and control unit 30 is adopted after being tripped according to voltage detection module 23
The preset threshold parameter automatic decision of the voltage signal and signal interaction module 31 that collect simultaneously controls the recloser mechanism 13 to be
No execution automatic reclosing.The control process of the automatic trip of the intelligentized reclosing breaker of the present invention has the characteristics that：
Include the defencive function for the various current capacity fault trips that existing residual current action breaker has, these current capacities
Failure is as overloaded, short-circuit and electric leakage, while also add the main circuit that existing residual current action breaker does not have
Output terminals A ', B ', C ', the defencive function of N ' voltage class fault trip, these voltage class reclosings are specifically included to over-pressed, deficient
Automatic reclosing after pressure, phase shortage, instantaneous fault recovery off zero, it is possible to neatly selected.The coincidence of the present invention
Lock breaker had both possessed the automatic reclosing function after instantaneous leak current fault recovers, and also possessed instantaneous voltage class fault recovery
Automatic reclosing function afterwards, and voltage class automatic reclosing function can carry out selectivity according to different false voltage types
Open and close, it is not only perfect for instantaneous power supply recovered from failure ability, it is ensured that the continuity of power supply, also meet not
With the demand of user, the generally applicable flexibility in different distribution systems is realized.
The embodiment provided with reference to Fig. 1 to Fig. 4, the intelligentized reclosing breaker for illustrating the present invention is realized
Three kinds of preferred embodiments of the control method of automatic reclosing：Tripping operation regulation is only for the detection of voltage class, only for residual current
Class is detected and detected according to current capacity, voltage class is detected and residual current class complete detection.These embodiments are simply to this hair
Bright explanation, rather than limitation of the present invention.
Comprise the following steps only for the first implementation control process that voltage class is detected：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class event by signal interaction module 31
Barrier allows automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, judged to confirm the voltage class for causing tripping operation event by control unit 30
Whether barrier belongs to the instantaneous voltage class failure of permission, if step b judged results are no, step c is transferred to, if step b sentences
Disconnected result is yes, is transferred to d；
C. control recloser mechanism 13 to perform automatic reclosing by control unit 30 to operate；
D. voltage detection module 23 is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit 30
Barrier, if step d judged results are no, is transferred to step c；If process d judged results are yes, step e is transferred to；
E. control unit 30 does not start reclosing, and control signal interactive module 31 performs alarm, points out the defeated of main circuit
Enter to hold A, B, C, N voltage abnormal, until voltage recovers normal automatic reclosing again.
The step b of first embodiment function judges whether identification tripping operation is to be detected by voltage detection module 23
Caused by over-pressed, under-voltage, phase shortage and failure off zero, judged result is no, then explanation tripping operation is examined by voltage detection module 23
Caused by over-pressed, the under-voltage, phase shortage and failure off zero measured, step c automatic reclosing is thus transferred to.Step b judged results
It is yes, then explanation tripping operation is as caused by the failure beyond over-pressed, under-voltage, phase shortage and failure off zero.Step d functions are to judge master
Whether input A, B, C, N of circuit failure exclude, and judged result is yes, then illustrate that failure has been excluded, judged result be it is no,
Then illustrate that failure is not excluded.Step e is actually the process of a wait failture evacuation, switchs to weight automatically once failture evacuation
Making process.
Comprise the following steps only for the second implementation control process that residual current class is detected：
A. after instantaneous leak current fault causes tripping operation, voltage detecting mould is controlled within the time of setting by control unit 30
Block 23 monitors whether to still suffer from voltage class failure；If process g judged results are no, step b is transferred to, if process g judges
As a result it is yes, then is transferred to step c；
B. control recloser mechanism 13 to perform automatic reclosing by control unit 30 to operate；
C. control unit 30 does not start reclosing, and control signal interactive module 31 performs alarm, points out the defeated of main circuit
Enter to hold A, B, C, N voltage abnormal, until voltage recovers normal automatic reclosing again.
The step a of second embodiment function is input A, B, C, the N for judging electric leakage class fault trip main circuit
With the presence or absence of the process of residual current class failure, judged result is yes, then account for voltage class failure is still suffered from, and judged result is
It is no, then illustrate that such failure is not present in input A, B, C, N of main circuit, step c is actually a wait failture evacuation
Process, switchs to reclosing process automatically once failture evacuation.
Above-mentioned first implementation control process and the second implementation control process can be used independently, but only with one of them
During process, it is possible that judge the incomplete problem of identification, it is another most preferably detected according to current capacity, voltage class is detected
And residual current class complete detection judge and control tripping operation and thereafter the control process (not shown) of reclosing be will be upper
First stated implements control process and second implements control process superposition, i.e., the 3rd implements control process.
3rd implementation control process comprises the following steps：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class event by signal interaction module 31
Barrier allows automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, judged to confirm the voltage class for causing tripping operation event by control unit 30
Whether barrier belongs to the instantaneous voltage class failure of permission, if step B judged results are yes, continues step C；If step B
Judged result is no, then is transferred to step F；
C. voltage detection module 23 is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit 30
Barrier, if step C judged results are yes, continues step D；If step C judged results are no, step E is transferred to；
D. control unit 30 does not start reclosing, and control signal interactive module 31 performs alarm, points out the defeated of main circuit
Enter to hold A, B, C, N voltage abnormal, until voltage recovers normal automatic reclosing again；
E. control recloser mechanism 13 to perform automatic reclosing and operate by control unit 30 to be controlled by control unit 30
Recloser mechanism 13 performs automatic reclosing operation；
F. judge that identifying whether is tripped as caused by instantaneous leak current fault, if step F judged results are yes, is returned
Return step C；If process F judged results are no, step E is directly transferred to.
The control logic of the present invention is that, as the foundation before reclosing, its basic condition is using the situation after voltage detecting
It can interpolate that out and cause the instantaneous failure of circuit breaker trip to be which kind of type, when residual current value reaches protection setting in circuit
During value, breaker can set according to user and carry out dropout trip operation, and when meeting voltage class failure, automatic reclosing can perform conjunction
Monitor whether to be allowed before lock can automatic reclosing voltage type, to ensure safety.User is thus fully taken into account
The various voltage types (over-pressed, under-voltage, phase shortage, off zero) of required trip protection, make the user of different distribution occasions pass through spirit
Selectivity living, which is set, ensures the power supply continuity needed for obtaining.
The foregoing is only presently preferred embodiments of the present invention, all technical equivalences changes made according to the claims in the present invention with
Within modification, the covering scope that all should be regarded as the present invention, any innovation and creation without departing from the range of true spirit,
Fall under the scope of the present invention.
Claims (8)
1. a kind of intelligentized reclosing breaker, includes contact apparatus (11), the control contact apparatus of control main circuit on/off
(11) operating mechanism (12) of closure/disjunction, current detection module (21), detection of electrical leakage module (22) and power module (40),
It is characterized in that：
Described breaker also includes being connected to the voltage detection module (23) that main circuit enters line side and contact apparatus (11) rear end,
And recloser mechanism (13), control unit (30) and be connected with described control unit (30) and carry out signal data friendship
Mutual signal interaction module (31)；
Described voltage detection module (23) is by respectively from the input (A, B, C, N) of main circuit and from contact apparatus (11) rear end
Each phase voltage signal for collecting two-way is exported to described control unit (30), current detection module (21) and detection of electrical leakage mould
Block (22) respectively exports each phase current signal collected from the output end of main circuit (A ', B ', C ', N ') to described control
Unit (30)；
Described control unit (30) is according to current detection module (21), detection of electrical leakage module (22), voltage detection module (23)
Current signal, voltage signal and the preset threshold parameter automatic decision of described signal interaction module (31) of input are simultaneously controlled
Whether described operating mechanism (12) performs tripping operation；
Voltage signal and letter that described control unit (30) is collected according to voltage detection module (23) after circuit breaker trip
Number preset threshold parameter automatic decision of interactive module (31) simultaneously controls whether described recloser mechanism (13) performs electricity
Dynamic reclosing；
Whether the described recloser mechanism (13) of described control unit (30) control performs the judgment step of recloser
For：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class failure by signal interaction module (31)
Allow automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, the voltage class failure for confirming to cause tripping operation is judged by control unit (30)
Whether belong to the instantaneous voltage class failure of permission, if step B judged results are yes, continue step C；If step B sentences
Disconnected result is no, then is transferred to step F；
C. voltage detection module (23) is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit (30)
Barrier, if step C judged results are yes, continues step D；If step C judged results are no, step E is transferred to；
D. control unit (30) does not start reclosing, and control signal interactive module (31) performs alarm, points out the defeated of main circuit
The voltage for entering end (A, B, C, N) is abnormal, until voltage recovers normal automatic reclosing again；
E. control recloser mechanism (13) to perform automatic reclosing by control unit (30) to operate by control unit (30) control
Recloser mechanism (13) processed performs automatic reclosing operation；
F. judge that identifying whether is tripped as caused by instantaneous leak current fault, if step F judged results are yes, returns to step
Rapid C；If process F judged results are no, step E is directly transferred to；
Or, whether the described recloser mechanism (13) of described control unit (30) control performs the judgement of recloser
Step is：
A. user sets which voltage class failure needs tripping operation, which instantaneous voltage class failure by signal interaction module (31)
Allow automatic reclosing；
B. after instantaneous voltage class failure causes tripping operation, the voltage class failure for confirming to cause tripping operation is judged by control unit (30)
Whether belong to the instantaneous voltage class failure of permission, if step b judged results are no, be transferred to step c, if step b judges
As a result it is yes, is transferred to d；
C. control recloser mechanism (13) to perform automatic reclosing by control unit (30) to operate；
D. voltage detection module (23) is controlled to monitor whether to still suffer from the event of voltage class within the time of setting by control unit (30)
Barrier, if step d judged results are no, is transferred to step c；If process d judged results are yes, step e is transferred to；
E. control unit (30) does not start reclosing, and control signal interactive module (31) performs alarm, points out the defeated of main circuit
The voltage for entering end (A, B, C, N) is abnormal, until voltage recovers normal automatic reclosing again.
2. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described control unit (30) bag
Current signal conditioning circuit, voltage signal conditioning circuit, single-chip microcomputer and drive circuit are included, from current detection module (21) and electric leakage
The current signal of detection module (22) input is exported to single-chip microcomputer after described current signal conditioning circuit processing, from voltage inspection
The voltage signal of survey module (23) input is exported to single-chip microcomputer after being handled through voltage signal conditioning circuit, described single-chip microcomputer control
Drive circuit performs tripping operation/automatic reclosing.
3. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described voltage detection module
(23) optocoupler and AD sample circuits are used.
4. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described voltage detection module
(23) each phase voltage signal of collection includes over-pressed signal, under-voltage signal, default phase signal and signal off zero.
5. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described signal interaction module
(31) liquid crystal display circuit, the indicating circuit of working condition, button inputting circuits and communication interface circuit are included.
6. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described current detection module
And current transformer and zero sequence current mutual inductor has been respectively adopted in detection of electrical leakage module (22) (21).
7. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described power module (40) bag
Include rectified three-phase circuit and bleeder circuit, rectified three-phase circuit is from input (A, B, C, N) power taking of main circuit, bleeder circuit point
Not to voltage detection module (23), the motor of recloser mechanism (13), signal interaction module (31) and control unit (30)
The DC voltage of adaptation is provided.
8. intelligentized reclosing breaker according to claim 1, it is characterised in that：Described current detection module
(21) and detection of electrical leakage module (22) collection each phase current signal include short circuit current flow signal, overload current signal and residue electricity
Flow signal.
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| CN201410624861.7A CN104377816B (en) | 2014-11-07 | 2014-11-07 | A kind of control method of intelligentized reclosing breaker and its automatic reclosing |
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| CN201410624861.7A CN104377816B (en) | 2014-11-07 | 2014-11-07 | A kind of control method of intelligentized reclosing breaker and its automatic reclosing |
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| FR3053174B1 (en) * | 2016-06-28 | 2018-07-27 | Socomec | METHOD FOR GENERATING A SHORT-CIRCUIT CURRENT FOR TRIGGERING AN ELECTRICAL PROTECTION ELEMENT |
| CN107622921A (en) * | 2016-07-13 | 2018-01-23 | 上海置信电气股份有限公司 | A kind of reclosing breaker |
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Application publication date: 20150225 Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of invention: An intelligent reclosing circuit breaker and its automatic reclosing control method Granted publication date: 20170725 License type: Common License Record date: 20201021 |