CN106877297A - Intelligent protection controller - Google Patents
Intelligent protection controller Download PDFInfo
- Publication number
- CN106877297A CN106877297A CN201710175122.8A CN201710175122A CN106877297A CN 106877297 A CN106877297 A CN 106877297A CN 201710175122 A CN201710175122 A CN 201710175122A CN 106877297 A CN106877297 A CN 106877297A
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- Prior art keywords
- circuit
- power
- control chip
- protection controller
- cpu1
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- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000001151 other effect Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
-
- H02J13/0075—
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
Intelligent protection controller, it is related to a kind of supply line's control protective unit, and in particular to a kind of Intelligent protection controller.The DC power supply terminal of power circuit is connected by charging circuit with reserve battery, the power output end of power circuit is connected with the power input of control chip, the signal input part of GPRS communication modules is connected with the GPRS signal input parts of control chip, clock circuit is connected with the clock signal input terminal of control chip, signal acquisition module is connected by optocoupler with the signal input part of control chip, and the output end of discharge circuit is connected with the amplifier signal input part of control chip.Integrate demarcation switch control, digital relay and monitoring, telecommunication, fault trip judgement and trouble and managing and tripping operation blocking function etc. in the present invention; and the automatic brake separating for realizing under excessively stream Overload; to reach protection circuit safety, failure does not influence user power utilization and rapid recovery normal power supply and other effects on regular link when occurring.
Description
Technical field
The present invention relates to a kind of supply line's control protective unit, and in particular to a kind of Intelligent protection controller.
Background technology
With economic fast development, power consumption annual growth more than 5%, requirement and pressure of the society to whole supply line
Power is growing.Electricity consumption user increasingly improves for the requirement of the stability and security of supply line.Therefore for supply lines
The requirement of the safety control on road also more and more higher.
Also having various supply line's control protective units in the market also has a many kinds, including intelligence, it is multi-functional,
But these protection devices have certain limitation, with respect to unitary function.Fortune can not particularly be started in the event of a power failure
OK；And these devices can only use direct current supply mostly, function is limited to very much.
The content of the invention
Defect and deficiency it is an object of the invention to be directed to prior art, there is provided a kind of Intelligent protection controller, it has
Have automatic excision singlephase earth fault, disconnect automatically fault current, isolation phase fault, reclosing judge permanent fault,
The multi-functionals such as quick fault point, remote control divide-shut brake, remote control divide-shut brake, and under realizing excessively stream Overload
Automatic brake separating, to reach protection circuit safety, failure does not influence user power utilization and rapid recovery on regular link normal when occurring
Power supply and other effects.
To achieve the above object, the present invention is using following technical scheme：It comprising control chip CPU1, power circuit 2,
Reserve battery 3, GPRS communication modules 4, clock circuit 5, relay drive circuit 6, optocoupler 7, signal acquisition module 8, amplifier electricity
Road 9, human-computer interface device 10, keyboard 11, LED light 12,485/232 interface 13, Wireless remote control device 14, power supply electricity
The DC power supply terminal on road 2 is connected by charging circuit 3-1 with reserve battery 3, the power output end and control chip of power circuit 2
The power input connection of CPU1, the signal input part of GPRS communication modules 4 and the GPRS signal input parts of control chip CPU1
Be connected, clock circuit 5 is connected with the clock signal input terminal of control chip CPU1, signal acquisition module 8 by optocoupler 7 with
The signal input part of control chip CPU1 is connected, and the output end of discharge circuit 9 is defeated with the amplifier signal of control chip CPU1
Enter end connection, man-machine interface 10, keyboard 11, LED light 12,485/232 interface 13, Wireless remote control device 14 with control
Coremaking piece CPU1 is connected.
Collect in the present invention demarcation switch control, digital relay and monitoring, telecommunication, fault trip judgement and trouble and managing and
Tripping operation blocking function etc. is capable of achieving automatic excision singlephase earth fault, disconnects fault current, isolation phase fault automatically in one
Failure, reclosing judge the multi-functionals such as permanent fault, quick fault point, remote control divide-shut brake, remote control divide-shut brake, with
And the automatic brake separating for realizing under excessively stream Overload, to reach protection circuit safety, failure does not influence regular link when occurring
Upper user power utilization and rapid recovery normal power supply and other effects.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is electrical block diagram of the invention；
Fig. 2 is the electrical block diagram of power circuit 2 in the present invention；
Fig. 3 is the electrical block diagram of main power circuit 2-1 in the present invention；
Fig. 4 is the electrical block diagram of charging circuit 3-1 in the present invention；
Fig. 5 is the electrical block diagram of clock circuit 5 in the present invention；
Fig. 6 is the electrical block diagram of repeat circuit drive circuit 6 of the present invention；
Fig. 7 is the electrical block diagram of signal acquisition module 8 in the present invention；
Fig. 8 is the electrical block diagram of discharge circuit 9 in the present invention.
Description of reference numerals：Control chip CPU1, power circuit 2, main power circuit 2-1, the communication of reserve battery 3, GPRS
Module 4, clock circuit 5, relay drive circuit 6, optocoupler 7, signal acquisition module 8, discharge circuit 9, human-computer interface device 10,
Keyboard 11, LED light 12,485/232 interface 13, Wireless remote control device 14.
Specific embodiment
Referring to shown in Fig. 1-Fig. 8, the technical scheme that this specific embodiment is used is：It includes control chip CPU1, electricity
Source circuit 2, main power circuit 2-1, reserve battery 3, GPRS communication modules 4, clock circuit 5, relay drive circuit 6, optocoupler
7th, signal acquisition module 8, discharge circuit 9, man-machine interface 10, keyboard 11, LED light 12,485/232 interface 13, wireless remote
Control device 14, the DC power supply terminal of power circuit 2 is connected with reserve battery 3, the power output end and control chip of power circuit 2
The power input connection of CPU1, the signal input part of GPRS communication modules 4 and the GPRS signal input parts of control chip CPU1
Be connected, clock circuit 5 is connected with the clock signal input terminal of control chip CPU1, signal acquisition module 8 by optocoupler 7 with
The signal input part of control chip CPU1 is connected, and the output end of discharge circuit 9 is defeated with the amplifier signal of control chip CPU1
Enter end connection, man-machine interface 10, keyboard 11, LED light 12,485/232 interface 13, wireless remote controller 14 with control core
Piece CPU1 is connected.
Referring to Fig. 2, described power circuit 2 realizes output DC comprising 7905,7906 two-way rectification chips, two-way rectifier bridge
+ 12V, DC+6V and DC-6V, so as to realize that DC current is exported.Circuit 2-2 major parts are LM2596-5.0 power supply chips, DC
+ 12V is input into, DC+5V outputs.This specific embodiment carries out supplementary power using AC or DC220V power voltage supplies, reserve battery 3
Mode, being different from like product in the market can only be powered using dc source.
Referring to Fig. 3, described main power circuit 2-1 is mainly LM2596-5.0 power supply chips, DC+12V inputs, DC+5V
Output.This specific embodiment is carried out the mode of supplementary power, is different from using AC or DC220V power voltage supplies, reserve battery 3
Like product can only be powered using dc source in the market.
Referring to Fig. 4, described charging circuit 3-1 includes voltage module AP5056, voltage stabilizing chip U1, connection-peg J1, several
Resistance R, diode D, several triode Q, to chip power supply and can provide multi-channel DC and power.The charging electricity that Fig. 3 is formed
Road voltage stabilization is adjustable.Charging circuit working method is：If detecting cell voltage after electricity on charging chip to enter less than 2.9V
Enter trickle charge pattern, charging current is the 1/10 of setting value；If detecting cell voltage higher than 2.9V and well below floating
Voltage enters fast charge mode, and charging current is setting value；If detecting cell voltage in the range of floating voltage, into floating
Mold filling formula, charging current rises and reduces with cell voltage；If detection cell voltage enters saturation mould higher than end of charge voltage
Formula, stops charging（Charging termination electric current is the 1/10 of setting value, and battery leakage current drops to below 2uA）.When cell voltage reduction
To 3.99V, can automatic charging again.There is this to design, make device lose in the case that main power source is powered still can be using electricity
The electricity in pond continues to check the data such as relay status, Protection parameters value within a certain period of time.Meanwhile, produced by power circuit
12v and 5v voltages can meet the power supply of other components such as chip, LCDs, the relay of circuit board.
Referring to Fig. 5, described clock circuit 4 includes crystal oscillator Y1, DS1302 chip, several resistance.It uses DS1302 cores
Independent clock module based on piece, error is no more than 0.5s.High-performance, low-power consumption, the real time clock circuit with RAM, it can
With to year, month, day, week, when, minute, second carry out timing, with leap year compensation function, operating voltage is 2.0V~5.5V.And can adopt
The clock signal or RAM data of multiple bytes are once transmitted with burst mode.There is one inside DS1302 for provisional storage
The ram register of data, while there is provided the ability that trickle current charging is carried out to back-up source.For data record, especially
It is the data point that some are acquired a special sense（During actuation time, operating time, overcurrent protection tripping operation and quick-break tripping operation etc.
Between）Record, can realize data with there are the data time simultaneously record.This record is to prolonged continuous TT＆C system
The analysis of result and lookup the reason for occur to abnormal data are significant.
Referring to Fig. 6, described relay drive circuit 6 includes relay JDQ1, JDQ2, JDQ3, several triode Q.When
User operates divide-shut brake, electric current to exceed setting protection value or circuit appearance by keyboard or Wireless remote control device
During failure, control chip CPU1 can control the on or off of triode, to reach the control to corresponding point, closing relay
System.Relay JDQ1, JDQ2, JDQ3 action are acted by the circuit driving switch of wiring, and realization is switched off or on to circuit.
Referring to Fig. 7, described signal acquisition module 8 includes array resistance R, several diode M, array photoelectric coupling U, number
Individual electric capacity C, by photoelectric coupling U-shaped into signal acquisition circuit, the stabilization of signal is ensured using photoelectric coupling.Optical coupling isolation circuit
Effect be to make there is no being directly connected to for electricity between segregate two parts circuit, application herein is mainly isolation low pressure
Control circuit and external high pressure circuit, increase security, reduce circuit interference, simplify circuit design.Switch position signal
（220v）, after switch state signal and energy storage state signal acquisition, by series resistance partial pressure, then by light-coupled isolation electricity
Road, after realizing that strong, weak electricity is separated, realizes security control, the treatment to switch position signal in feeding control chip CPU1, while
Make position of the switch state, switch motion state and the energy storage state body in the location status function bar and led indicator lamps of display screen
Reveal and.
Referring to Fig. 8, described discharge circuit 9 includes several resistance R, amplifier U, electric capacity C, diode Z, by corresponding
Circuit forms amplifier amplifying circuit.Specific implementation is：A phase, B phase, C phase, N phase currents（That is Ia, Ib, Ic, In）Access manganese
Copper input, current signal is become voltage signal and transmitted to the A/D of control chip CPU1 change pin.Changed by A/D
Voltage signal is become into data signal to be compared for control chip CPU1 computings and with the protection signal value deposited, is determined whether
Starting protection is acted.
Man-machine interface, keyboard, led indicator lamps, 485/232 interface and wireless remote control be region be directly facing user operation and
Indicate function.Man-machine interface is made up of 2.0 cun of display screens and control button, and display screen is powered by the 5v power supplys in circuit, is passed through
Uart mouthfuls and control chip CPU1 is realized communication, can be to user's display device according to the dependent instruction that control chip CPU1 sends
Particular state, and operation display interface, warning etc. in operation make operation simpler.As shown in the table, keyboard is except selection
Outside function, right and left key is pressed according to screen prompt, protection switch divide-shut brake can be also operated manually.
Remote signal, running status, division position state, guard mode, energy storage situation, operation of the LED display lamps to device
Action, control loop, expense charge police, GPRS signals, self test failure and four road com port communications states make sign, in control core
Corresponding LED lamp is lighted in control after piece CPU1 receives coherent signal feedback, can quickly, the directly state of reading device or former
Barrier etc..485/232 interface is directly connected with single-chip microcomputer uart mouthfuls, and the electricity of TTL and corresponding signal is realized by 485 and 232 chips
Flat turn is changed allows single-chip microcomputer to be communicated by com mouthfuls, it is possible to achieve user is adjusted using apparatus such as computer to device
The function of examination, also can be used as expanded function.Wireless remote controller.Wireless remote controller uses 2272/2262 control chip, frequency
It is 315M.There are four buttons on remote control, four data bit output pins D0, D1, D2, D3 on receiver board are corresponded to respectively.Press
Button transmission signal, corresponding data bit will be sent on the corresponding I/O port of single-chip microcomputer, and low electricity is sent from single-chip microcomputer to relay
It is flat, complete control of the remote control to divide-shut brake.Remote control working method is crawl, that is, pressed signal, looses one's grip and does not have signal.This dress
Put provisioned remote control and do not possess selectivity, therefore need when in use to terminal number, tri- buttons of C, A, D using remote control are defeated
A, C carry out separating brake, closing operation again to enter corresponding terminal number, realize that a remote control can be precisely controlled many table apparatus.Remote control is effective
Distance is ten meters.
Collect in the present invention demarcation switch control, digital relay and monitoring, telecommunication, fault trip judgement and trouble and managing and
Tripping operation blocking function etc. is capable of achieving automatic excision singlephase earth fault, disconnects fault current, isolation phase fault automatically in one
Failure, reclosing judge the multi-functionals such as permanent fault, quick fault point, remote control divide-shut brake, remote control divide-shut brake, with
And the automatic brake separating for realizing under excessively stream Overload, to reach protection circuit safety, failure does not influence regular link when occurring
Upper user power utilization and rapid recovery normal power supply and other effects.
The above, is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
Other modifications or equivalent that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention,
All should cover in the middle of scope of the presently claimed invention.
Claims (8)
1. Intelligent protection controller, it is characterised in that：It includes control chip (CPU1), power circuit (2), main power circuit
(2-1), reserve battery (3), GPRS communication modules (4), clock circuit (5), relay drive circuit (6), optocoupler (7), signal
Acquisition module (8), discharge circuit (9), human-computer interface device (10), keyboard (11), LED light (12), 485/232 interface
(13), Wireless remote control device (14), the DC power supply terminal of power circuit (2) passes through charging circuit (3-1) and reserve battery
(3) connect, the power output end of power circuit (2) is connected with the power input of control chip (CPU1), GPRS communication modules
(4) signal input part is connected with the GPRS signal input parts of control chip (CPU1), clock circuit (5) and control chip
(CPU1) clock signal input terminal is connected, and signal acquisition module (8) is by optocoupler (7) and the signal of control chip (CPU1)
Input is connected, and the output end of discharge circuit (9) is connected with the amplifier signal input part of control chip (CPU1), man-machine boundary
Face (10), keyboard (11), LED light (12), 485/232 interface (13), Wireless remote control device (14) with control core
Piece (CPU1) is connected.
2. Intelligent protection controller according to claim 1, it is characterised in that：Described power circuit (2) using 7905,
7906 two-way rectification chips, two-way rectifier bridge realize output DC+12V, DC+6V and DC-6V, so as to realize that DC current is exported.
3. Intelligent protection controller according to claim 1, it is characterised in that：Described main power circuit (2-1) is main
It is LM2596-5.0 power supply chips, DC+12V inputs, DC+5V outputs.
4. Intelligent protection controller according to claim 1, it is characterised in that：Described charging circuit (3-1) includes electricity
Die block AP5056, voltage stabilizing chip (U1), connection-peg (J1), several resistance (R), diode (D), several triodes (Q), can be with
To chip power supply and multi-channel DC is provided powers.
5. Intelligent protection controller according to claim 1, it is characterised in that：Described clock circuit (4) is comprising crystal oscillator
(Y1), DS1302 chips, several resistance.
6. Intelligent protection controller according to claim 1, it is characterised in that：Described relay drive circuit (6) bag
Containing relay (JDQ1), (JDQ2), (JDQ3), several triodes (Q).
7. Intelligent protection controller according to claim 1, it is characterised in that：Described signal acquisition module (8) is included
Array resistance (R), several diodes (M), array photoelectric coupling (U), several electric capacity (C), signal is formed by photoelectric coupling (U)
Acquisition Circuit, the stabilization of signal is ensured using photoelectric coupling.
8. Intelligent protection controller according to claim 1, it is characterised in that：Described discharge circuit (9) is comprising several
Resistance (R), amplifier (U), electric capacity (C), diode (Z), amplifier amplifying circuit is formed by corresponding circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175122.8A CN106877297A (en) | 2017-03-22 | 2017-03-22 | Intelligent protection controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175122.8A CN106877297A (en) | 2017-03-22 | 2017-03-22 | Intelligent protection controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106877297A true CN106877297A (en) | 2017-06-20 |
Family
ID=59172717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710175122.8A Pending CN106877297A (en) | 2017-03-22 | 2017-03-22 | Intelligent protection controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106877297A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420362A (en) * | 2020-11-11 | 2021-02-26 | 广东电网有限责任公司 | On-load voltage regulation power transformer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239747A (en) * | 1990-01-02 | 1991-07-10 | Gotec Research And Dev Ltd | Data protection device |
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
| CN202678950U (en) * | 2012-06-14 | 2013-01-16 | 安徽科大智能电网技术有限公司 | Demarcation switch controller |
| CN203690897U (en) * | 2014-01-21 | 2014-07-02 | 霍立克电气（武汉）有限公司 | Capacitor set protective device with inrush current inhibition and breaker monitoring functions |
| CN204030722U (en) * | 2014-07-15 | 2014-12-17 | 深圳市惠立智能电力科技有限公司 | A kind of band radio communication FDR cover type Multifunction open gateway controller |
| CN204068426U (en) * | 2014-07-17 | 2014-12-31 | 天津港保税区益诚电力设备有限公司 | A kind of controller of demarcation circuit breaker |
| CN204089344U (en) * | 2014-08-28 | 2015-01-07 | 杭州东环电气有限公司 | Intelligent monitoring protection device |
-
2017
- 2017-03-22 CN CN201710175122.8A patent/CN106877297A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239747A (en) * | 1990-01-02 | 1991-07-10 | Gotec Research And Dev Ltd | Data protection device |
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
| CN202678950U (en) * | 2012-06-14 | 2013-01-16 | 安徽科大智能电网技术有限公司 | Demarcation switch controller |
| CN203690897U (en) * | 2014-01-21 | 2014-07-02 | 霍立克电气（武汉）有限公司 | Capacitor set protective device with inrush current inhibition and breaker monitoring functions |
| CN204030722U (en) * | 2014-07-15 | 2014-12-17 | 深圳市惠立智能电力科技有限公司 | A kind of band radio communication FDR cover type Multifunction open gateway controller |
| CN204068426U (en) * | 2014-07-17 | 2014-12-31 | 天津港保税区益诚电力设备有限公司 | A kind of controller of demarcation circuit breaker |
| CN204089344U (en) * | 2014-08-28 | 2015-01-07 | 杭州东环电气有限公司 | Intelligent monitoring protection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420362A (en) * | 2020-11-11 | 2021-02-26 | 广东电网有限责任公司 | On-load voltage regulation power transformer |
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Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |