CN107422162A - A kind of intelligent current limliting based on current transformer sampling takes control open-circuit system and method - Google Patents
A kind of intelligent current limliting based on current transformer sampling takes control open-circuit system and method Download PDFInfo
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- CN107422162A CN107422162A CN201710602547.2A CN201710602547A CN107422162A CN 107422162 A CN107422162 A CN 107422162A CN 201710602547 A CN201710602547 A CN 201710602547A CN 107422162 A CN107422162 A CN 107422162A
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- module
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- breaker
- reclosing
- breaker body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Taking control open-circuit system and method, the system the invention discloses a kind of intelligent current limliting based on current transformer sampling includes breaker body, reclosing module, sampling module, control module, power module, human-computer interaction module, communication module and data memory module；The breaker body includes current sensor, the current sensor collection breaker body current signal is sent to sampling module, control module is sent to after the current signal is nursed one's health using module, current signal progress A/D is converted into current digital signal by the control module, by the current digital signal compared with predetermined threshold value, if current digital signal is higher than predetermined threshold value, then control module control reclosing module carries out separating brake again to breaker body, when subscriber payment success, breaker body automatic closing；Methods described and system meet basic electricity demand of the user before continuing to pay dues, and the electricity consumption of user is experienced more intelligent and hommization.
Description
Technical field
The present invention relates to intelligent low-pressure field of power distribution, more particularly, to a kind of intelligence based on current transformer sampling
Current limliting takes control open-circuit system and method.
Background technology
In low-voltage distribution system, intelligent protection and intelligent power are more and more important, and power supply enterprise is with user to intelligent electricity
The security of table, convenience requirement also improve constantly, and the attention that China develops to the technology of intelligent electric meter, national grid pair
The q＆r of electric energy meter on-load switch is paid much attention to, important measurement instrument of the intelligent electric energy meter as intelligent grid,
In addition to the basic function for possessing traditional electric quantity metering, also with power information storage, two-way a variety of rate meterings, user terminal control
System, the bidirectional data communication of plurality of data transmission modes, the function such as anti-electricity-theft, are the following intelligentized hairs of energy-conserving intelligent power network
Open up direction.State Grid Corporation of China formulates《The external Circuit breaker technology specification of electric energy meter》, specification is a kind of and intelligent electric energy meter phase
The special miniature circuit breaker technical requirements of association.The external breaker of new electric energy meter not only improve electric energy meter expense control system can
By property, Power System Intelligent management and the safe and stable operation serviced are also ensured that.However, this external breaker of electric energy meter lacks
Early warning system, when timely or other cause specifics do not fail to pay the electricity charge to user, user will be unable to continue electricity consumption, and this is to user
Basic living can affect.
The content of the invention
In order to solve the problems, such as that the existing non-electricity payment of breaker cuts off the inadequate hommization of electricity consumption existing for background technology,
The invention provides a kind of intelligent current limliting based on current transformer sampling to take control open-circuit system and method, the system and method
Increase certain current-limiting function on existing breaker and carry out the hommization management of power use, can also meet that user exists when arrearage occurs
Basic electricity demand before payment；
A kind of intelligent current limliting expense control open-circuit system based on current transformer sampling includes：
Breaker body, the breaker body include current transformer, and the breaker body is for execution circuit point
Closing operation, the current transformer are used to sample breaker body electric current；
Reclosing module, the reclosing module is used to breaker body is carried out to close a floodgate again or separating brake；
Sampling module, the sampling module are connected with breaker body and control module, and the sampling module receives disconnected
The sampled current value of road device body current transformer simultaneously carries out signal condition, and the sampled current signals after conditioning are sent to control
Molding block；
Control module, the control module is used for the sampled current signals for handling sampling module, for controlling reclosing mould
Block carries out separating brake or combined floodgate；It is described processing sampling module sampled current signals refer to will conditioning post-sampling current signal with advance
The threshold value of setting is compared；
Power module, the power module are used in first separating brake to system power supply.
Further, the reclosing module includes drive circuit, direct current generator and gear, the gear and circuit breaker electric
Lock is connected, and can control breaker electric brake division by pinion rotation, the control module sends separating brake or conjunction to reclosing module
Lock instructs, and drive circuit driving DC motor drives transmission, makes breaker open operation or combined floodgate；
Further, the control module includes MCU chip, and the MCU chip is used to believe the sample rate current after conditioning
Number sample rate current data signal is converted into, the sample rate current data signal is compared with pre-set current threshold
Compared with sending operational order to reclosing module according to comparative result；
Further, the system includes communication module, and the communication module makes control unit be led to external equipment
Letter, the communication module include RS485 or carrier wave system；
Further, the system includes human-computer interaction module, and the human-computer interaction module includes input keyboard, the people
Machine interactive module is connected with control module, for setting electric current threshold value according to demand；
Further, the system includes data memory module, and described control unit includes computation chip；The metering core
Piece is used to record metric results and working state of circuit breaker, and the data memory module is used to remember the computation chip
The metric results and working state of circuit breaker of record are stored；
Further, the breaker body includes handle, arc quenching system and the input terminal being sequentially connected, thermal tripping
System, operating mechanism, electromagnetic system, current transformer, outlet terminal, the handle are connected with operating mechanism.
A kind of intelligent current limliting expense control breaking method based on current transformer sampling includes：
Step 1, demand charge is in arrearage state, and breaker body instructs according to arrearage separating brake and carries out separating brake；
Step 2, electric power source pair of module system is powered, and reclosing module carries out closing operation to breaker body；
Step 3, sampling module receives the current value for the breaker body current transformer sampling closed a floodgate again, and will sampling
As a result sent after nursing one's health to control module；
Step 4, control module by the sampled current value of sampling module compared with default current threshold, when sampling electricity
When flow valuve exceedes default current threshold, control module thinks that reclosing module sends separating brake instruction, and reclosing module is to breaker
Body carries out sub-switching operation；Locking state is in after breaker body separating brake；
Step 5, after user completes payment, breaker body automatic closing, power module is no longer powered to system；
Further, user completes payment before sampled current value is not above default current threshold, and power module is not
System is powered again, breaker keeps "on" position automatically；
Further, the reclosing module includes drive circuit, direct current generator and gear, the gear and circuit breaker electric
Lock is connected, and can control breaker electric brake division by pinion rotation, the control module sends separating brake or conjunction to reclosing module
Lock instructs, and drive circuit driving DC motor drives transmission, makes breaker open operation or combined floodgate；
Further, the control module includes MCU chip, and the MCU chip is used to believe the sample rate current after conditioning
Number sample rate current data signal is converted into, the sample rate current data signal is compared with pre-set current threshold
Compared with sending operational order to reclosing module according to comparative result.
Beneficial effects of the present invention are：Technical scheme, give a kind of intelligence based on current transformer sampling
Energy current limliting sub-control open-circuit system and method, system and method automatic closing in subscriber arrearage, meet user before continuing to pay dues
Basic electricity demand, and the user power utilization amount after automatic closing is counted simultaneously, and given threshold is controlled, and works as volume
When outer power consumption exceedes threshold value, breaker separating brake again, to avoid lawless people from being sneaked current using this human oriented design, for it is following more
Intelligent, hommization electricity consumption experience is added to take a firm foundation.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is that a kind of intelligent current limliting based on current transformer sampling of the specific embodiment of the invention takes control open-circuit system
Structure chart；
Fig. 2 is a kind of schematic diagram of breaker body comprising current transformer of the specific embodiment of the invention；And
Fig. 3 is that a kind of intelligent current limliting based on current transformer sampling of the specific embodiment of the invention takes control breaking method
Flow chart.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is that a kind of intelligent current limliting based on current transformer sampling of the specific embodiment of the invention takes control open-circuit system
Structure chart, system described in the present embodiment include breaker body 101, reclosing module 102, sampling module 103, control mould
Block 104, power module 105, human-computer interaction module 106, communication module 107 and data memory module 108；
The breaker body 101 is connected with power network, is controlled whether for performing switching instruction to customer power supply, described
The built-in current transformer 1011 of breaker body 101, the current transformer 1011 are used to adopt to flowing through circuit breaker current
Sample, the output end of current transformer 1011 are connected with the input of sampling module 103, and when system enables, the electric current is mutual
The circuit breaker current signal of collection is sent to sampling module 103 by sensor 1011；
The sampling module 103 is used for the current sampling signal for receiving current transformer 1011, and to the current sample
Signal is nursed one's health, and the current sampling signal after conditioning is sent to control module 104,；
The control module 104 includes MCU chip 1041 and computation chip 1042, and the MCU chip 1041 receives sampling
The current sampling signal that module 103 is sent, current sampling signal progress A/D is converted into current sample data signal, will
Current sample data signal is compared with default current threshold, if current sample data signal exceedes default current threshold
It is worth, then the control module sends reclosing instruction to reclosing module；
The control module 104 is connected with human-computer interaction module 106, and the human-computer interaction module 106 includes input keyboard,
For setting electric current threshold value according to demand；
The control module 104 is connected with communication module 107, and the communication module makes control unit be carried out with external equipment
Communication, the communication module include RS485 or carrier wave system；
The computation chip 1042 receives the current sampling signal that sampling module 103 is sent, the computation chip 1042 with
Data memory module 108 is connected, and the computation chip 1042 is used to record metric results and working state of circuit breaker, institute
Metric results and working state of circuit breaker of the data memory module 108 for the computation chip 1042 to be recorded are stated to be deposited
Storage；
The control module 104 is connected with reclosing module 102, and the reclosing module 102 uses with breaker body
Geared machine connects, and the reclosing module 102 includes drive circuit, direct current generator and gear, the gear and open circuit
Device body electric brake is connected, and breaker body electric brake division is can control by pinion rotation, and the control module is to reclosing module
Separating brake or reclosing command are sent, drive circuit driving DC motor drives transmission, makes breaker open operation or combined floodgate；
Further, a kind of breaker sheet comprising current transformer of the specific embodiment of the invention as shown in Figure 2
The schematic diagram of body；The breaker body 101 include handle 201, arc quenching system 202 and the input terminal 203 being sequentially connected,
Thermal tripping system 204, operating mechanism 205, electromagnetic system 206, current transformer 1011, outlet terminal 207, the handle 201
It is connected with operating mechanism 205.
Fig. 3 is that a kind of intelligent current limliting based on current transformer sampling of the specific embodiment of the invention takes control open circuit side
Method, methods described carry out human-based management when may be implemented in subscriber arrearage, continue to supply a part of electricity and are paid the fees in time in user
Preceding not influence its basic electricity demand, methods described includes：
Step 301, demand charge is in arrearage state, and breaker body instructs according to arrearage separating brake and carries out separating brake；
Step 302, electric power source pair of module system is powered, and reclosing module carries out closing operation to breaker body；
Step 303, sampling module receives the current value for the breaker body current transformer sampling closed a floodgate again, and will adopt
Sent after the conditioning of sample result to control module；
Step 304, control module works as sampling by the sampled current value of sampling module compared with default current threshold
When current value exceedes default current threshold, control module thinks that reclosing module sends separating brake instruction, and reclosing module is to open circuit
Device body carries out sub-switching operation；Locking state is in after breaker body separating brake；
Step 305, after user completes payment, breaker body automatic closing, power module is no longer powered to system；
Further, user completes payment before sampled current value is not above default current threshold, and power module is not
System is powered again, breaker keeps "on" position automatically；
Further, the reclosing module includes drive circuit, direct current generator and gear, the gear and circuit breaker electric
Lock is connected, and can control breaker electric brake division by pinion rotation, the control module sends separating brake or conjunction to reclosing module
Lock instructs, and drive circuit driving DC motor drives transmission, makes breaker open operation or combined floodgate；
Further, the control module includes MCU chip, and the MCU chip is used to believe the sample rate current after conditioning
Number sample rate current data signal is converted into, the sample rate current data signal is compared with pre-set current threshold
Compared with sending operational order to reclosing module according to comparative result.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (11)
1. a kind of intelligent current limliting based on current transformer sampling takes control open-circuit system, the system includes：
Breaker body, the breaker body include current transformer, and the breaker body is used for execution circuit divide-shut brake
Operation, the current transformer are used to sample breaker body electric current；
Reclosing module, the reclosing module is used to breaker body is carried out to close a floodgate again or separating brake；
Sampling module, the sampling module are connected with breaker body and control module, and the sampling module receives breaker
The sampled current value of body current transformer simultaneously carries out signal condition, and the sampled current signals after conditioning are sent to control mould
Block；
Control module, the control module is used for the sampled current signals for handling sampling module, for controlling reclosing module to enter
Row separating brake or combined floodgate；The sampled current signals of the processing sampling module refer to conditioning post-sampling current signal with presetting
Threshold value be compared；
Power module, the power module are used in first separating brake to system power supply.
2. system according to claim 1, it is characterised in that：The reclosing module includes drive circuit, direct current generator
And gear, the gear are connected with breaker electric brake, breaker electric brake division, the control module can control by pinion rotation
Separating brake or reclosing command are sent to reclosing module, drive circuit driving DC motor drives transmission, makes breaker open operation
Or close a floodgate.
3. system according to claim 1, it is characterised in that：The control module includes MCU chip, the MCU chip
For the sampled current signals after conditioning to be converted into sample rate current data signal, by the sample rate current data signal and in advance
The current threshold set is compared, and operational order is sent to reclosing module according to comparative result.
4. system according to claim 1, it is characterised in that：The system includes communication module, and the communication module makes
Control unit is communicated with external equipment, and the communication module includes RS485 or carrier wave system.
5. system according to claim 1, it is characterised in that：The system includes human-computer interaction module, described man-machine mutual
Dynamic model block includes input keyboard, and the human-computer interaction module is connected with control module, for setting electric current threshold value according to demand.
6. system according to claim 3, it is characterised in that：The system includes data memory module, and the control is single
Member includes computation chip；The computation chip is used to record metric results and working state of circuit breaker, and the data are deposited
Storage module is used for the metric results for recording the computation chip and working state of circuit breaker is stored.
7. system according to claim 1, it is characterised in that：The breaker body include handle, arc quenching system and
Input terminal, thermal tripping system, operating mechanism, electromagnetic system, current transformer, the outlet terminal being sequentially connected, the handle
It is connected with operating mechanism.
8. a kind of intelligent current limliting based on current transformer sampling takes control breaking method, methods described includes：
Step 1, demand charge is in arrearage state, and breaker body instructs according to arrearage separating brake and carries out separating brake；
Step 2, electric power source pair of module system is powered, and reclosing module carries out closing operation to breaker body；
Step 3, sampling module receives the current value for the breaker body current transformer sampling closed a floodgate again, and by sampled result
Sent after conditioning to control module；
Step 4, control module works as sampled current value by the sampled current value of sampling module compared with default current threshold
During more than default current threshold, control module thinks that reclosing module sends separating brake instruction, and reclosing module is to breaker body
Carry out sub-switching operation；Locking state is in after breaker body separating brake；
Step 5, after user completes payment, breaker body automatic closing, power module is no longer powered to system.
9. according to the method for claim 8, it is characterised in that：User is not above default current threshold in sampled current value
Payment is completed before value, power module is no longer powered to system, and breaker keeps "on" position automatically.
10. according to the method for claim 8, it is characterised in that：It is characterized in that：The reclosing module includes driving electricity
Road, direct current generator and gear, the gear are connected with breaker electric brake, and breaker electric brake division is can control by pinion rotation,
The control module sends separating brake or reclosing command to reclosing module, and drive circuit driving DC motor drives are driven,
Make breaker open operation or combined floodgate.
11. according to the method for claim 8, it is characterised in that：The control module includes MCU chip, the MCU chip
For the sampled current signals after conditioning to be converted into sample rate current data signal, by the sample rate current data signal and in advance
The current threshold set is compared, and operational order is sent to reclosing module according to comparative result.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602547.2A CN107422162A (en) | 2017-07-21 | 2017-07-21 | A kind of intelligent current limliting based on current transformer sampling takes control open-circuit system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710602547.2A CN107422162A (en) | 2017-07-21 | 2017-07-21 | A kind of intelligent current limliting based on current transformer sampling takes control open-circuit system and method |
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| CN108445782A (en) * | 2018-01-31 | 2018-08-24 | 陶齐雄 | Reclosing self-test report hinders safety management platform and method |
| CN111650413A (en) * | 2020-04-14 | 2020-09-11 | 江苏三口井信息科技有限公司 | Metering and protecting system and method of intelligent miniature circuit breaker |
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