CN107181233A - The controller and control method of breaker - Google Patents

Abstract

Present invention is disclosed a kind of control method of the controller of breaker, including：Digital independent and signal detection step, read memory read data from quick, electric circuit inspection MCR/HSISC status signals are detected by MCR/HSISC.Function selects step, and selection performs MCR functions or HSISC functions, and the selection is to be made based on MCR/HSISC signals with the presence or absence of saltus step.Perform MCR functions or perform HSISC functions.Meet execution condition and then implement dropout, process terminates, if running into end condition in the process of implementation, process terminates.The present invention also proposes to realize the controller of the breaker of above-mentioned control method.The controller and control method of the breaker of the present invention realize MCR/HSISC functions using software mode, all there is advantage in cost of implementation and detection stability, the controller possess MCR/HSISC detection circuit and fast reading and writing memory circuitry, can realize controller quick startup and dead electricity before no write de-lay.

Description

The controller and control method of breaker

Technical field

The present invention relates to Low Voltage Electrical Apparatus, controller and its control more specifically to breaker Method processed.

Background technology

Breaker is important protection electrical equipment in distribution system.In recent years, answering with low-voltage circuit breaker With requiring to improve constantly, requirement to circuit breaker intelligent controller also more and more higher, function is more and more multiple It is miscellaneous.Do not require nothing more than basic three section protection and earth-fault protection, also require to have unbalance protection, The supplementary protections such as neutral conductor protection.Some more require faulty alarm logging inquiry, On-off signal/defeated Go out (DI/DO) function, making current release (MCR) function, high setting value short-circuit wink dynamic guarantor Protect the miscellaneous functions such as (HSISC) function, communication function.Complicated and diversified function is brought just to user While sharp, the power consumption of circuit breaker intelligent controller is added, design difficulty is improved.Meanwhile, Breaker, such as frame circuit breaker miniaturization designer trends under, frame size can as little as 1000A, Rated current as little as 200A, these relatively low electric current indexs define the power supply capacity of fast saturable inductor, Low power dissipation design turns into the key technology of circuit breaker intelligent controller.

From the point of view of breaker closing process, if there is short trouble, electronic trip unit during no accessory power supply Startup needs certain time, now circuit breaker short circuit turn-on current unprotect.Electronics when having accessory power supply Electrical apparatus release is working properly, now short circuit making current can or short delay dynamic with short-circuit wink protect, but Connection short-circuit impact current failure can not be cut off as soon as possible.In order to make up the defect of short-circuit protection, framework Breaker controller needs to increase short-circuit instantaneous protection (HSISC) function of high setting value and turn-on current Electrical apparatus release (MCR) function.Generally, on MCR/HSISC functions are realized, conventional treatment mode is Peak value judgement is carried out using hardware circuit, when peak value exceedes MCR/HSISC setting value, triggering Magnetic flux is acted, and disconnects breaker.

For example, Application No. CN201420242293.X patent application discloses a kind of low pressure open circuit Device intelligent controller, including one or more transformer component, are socketed on low-voltage circuit breaker On one phase busbar, the transformer component includes silicon steel sheet and fast saturation transformer, the electrical connection of its two ends Loop structure is formed, is set around busbar.Pass through this design, when there is electric current to flow through busbar, silicon Induction electric energy will be produced between steel disc and fast saturation transformer, silicon steel sheet is public with fast saturation transformer End, that is, electric energy output unit electric energy output end, pass through the electricity in wire hole and intelligent controller Energy receiving circuit connection, induction electric energy is transmitted microprocessor and other power supplies into intelligent controller Module, is that each several part of intelligent controller is powered.CN201420242293.X is in breaker in normal In the case of the minimum current that works, it is possible to occur because power consumption is mismatched and caused by controller can not normal work The phenomenon of work, even results in and loses defencive function as the intelligent breaker of electric prospection and control device.

Application No. CN200720058307.2 patent application discloses a kind of breaker protection control Unit processed, including breaker body, current transformer TA, control circuit, battery, breaker sheet Body is connected with control circuit, and current transformer TA is electrically connected to each other with control circuit and battery, electricity Current transformer TA is by controlling circuit to be charged to battery, and current transformer TA and battery are to control Circuit is powered.CN200720058307.2 using battery as power supply, current transformer from The electric power of main circuit draws is first filled with battery, then by returning that battery summation current transformer is collectively formed Road control device is powered to the controller of breaker, mutual by electric current when the electric current for flowing through breaker is larger Sensor is powered, when the electric current for flowing through breaker is smaller by storage battery power supply.But this technology is present A kind of big then volume of the capacity of shortcoming, i.e. battery is also big, it is impossible to comply with framework Miniaturization Design trend. In addition, in the case that frame circuit breaker runs into stock's long period, the service life of battery is limited, Maintenance difficulties and cost can be increased by frequently changing.

Application No. CN200810039739.8 patent application discloses a kind of MCR of breaker Guard method, this method judges whether MCR signals are effective, such as effectively, puts MCR effective markers, And timing, the clear MCR effective markers if timing is more than 100ms, such as MCR invalidating signals, then Clear MCR effective markers；Judge whether MCR marks are effective, such as effectively, whether judge sampled data More than MCR threshold values, in this way, MCR, which crosses threshold number, plus 1, if MCR crosses threshold number More than 4 times, then circuit breaker trip.If sampled data is less than MCR threshold values, MCR moves into one's husband's household upon marriage Limit number of times subtracts 1, untill reducing to 0.CN200810039739.8 defect is to judge MCR Whether signal effectively starts dependent on controller, but fast saturable inductor electric current is when powering during controller startup Between it is longer, cause this method MCR protect low-response.

Application No. CN201310428241.1 patent application disclose it is a kind of containing energy storage detection and The quick MCR intelligent controllers of arbitration functions, it is characterised in that：Include MCR control units, Data acquisition, computing, processing and control element (PCE), transformer, fast saturation transformer for supplying power unit and actuating Device, data acquisition, computing, the output of processing and control element (PCE) and MCR control units be or relation, As long as both any one output high level are with regard to that can act the tripping coil of actuator, using such scheme, The present invention provides a kind of tank voltage and compared and judging unit, set by fast saturation transformer for supplying power unit Tank voltage has been counted to compare and judging unit, the voltage ratio designed by fast saturation transformer for supplying power unit compared with The quick, intelligent controller of new detection containing energy storage and arbitration functions with judging unit. CN201310428241.1 use hardware judgment mode, exist hardware peak value judgment mode it is unreliable and The high defect of cost of implementation.

The content of the invention

The present invention is directed to propose the controller and control method of a kind of breaker, can with lower cost and Higher efficiency realizes MCR/HSISC functions.

According to one embodiment of the invention, a kind of control method of the controller of breaker is proposed, including：

S102, digital independent and signal detection step, read memory read data from quick, pass through MCR/HSISC detects electric circuit inspection MCR/HSISC status signals；

S104, function selection step, selection perform MCR functions or HSISC functions, the selection It is to be made based on MCR/HSISC signals with the presence or absence of saltus step, can if performing MCR functions Then enter step S106, step S108 is entered if HSISC functions are performed；

S106, execution MCR functions, start timer and simultaneously perform MCR functions, if meeting MCR The execution condition of function simultaneously is implemented to thread off, then process terminates, if running into termination bar in the process of implementation Part, then process terminate, if timer timing reach and process is not over yet, terminate perform Step S106 transfers to perform step S108；

S108, execution HSISC functions, perform HSISC functions, if meeting HSISC functions Execution condition and implement thread off, then process terminates.If running into end condition in the process of implementation, Then process terminates.

In one embodiment, the mistake to no write de-lay memory write data is also included when implementing to thread off Journey, the data of write-in are the data related to dropout.

In one embodiment, the execution time of digital independent and signal detection step is 2ms~3ms.

In one embodiment, the quick memory that reads is flash storage.No write de-lay memory It is eeprom memory.MCR/HSISC detection circuits include optocoupler.

According to one embodiment of present invention, a kind of controller of breaker is proposed, including：Single-chip microcomputer Control circuit and in single chip machine controlling circuit connect interface circuit, MCR/HSISC detection circuit, Signal acquisition circuit, data storage circuitry, liquid crystal display circuit, circuits, telecommunication circuit, Actuating circuit, in addition to power circuit, power circuit are connected to each above-mentioned circuit and supplied for the circuit Electricity；

Wherein data storage circuitry includes quick reading memory and no write de-lay memory；

Single chip machine controlling circuit reads memory read data and passed through after starting from quick MCR/HSISC detect electric circuit inspection MCR/HSISC status signals, selection perform MCR functions or Person's HSISC functions, dropout instruction are sent when meeting execution condition dynamic by actuating circuit execution dropout Make.

In one embodiment, single chip machine controlling circuit is also deposited after instruction of threading off is sent to no write de-lay Reservoir writes data, and the data of write-in are the data related to dropout.

In one embodiment, the quick memory that reads is flash storage.No write de-lay memory It is eeprom memory.

In one embodiment, MCR/HSISC detects that circuit includes optocoupler.

In one embodiment, power circuit is fast saturation power supply, and it is anti-that the power circuit includes fast saturation Current feed circuit, booster circuit and reduction voltage circuit.Output voltage of the fast saturation feedback circuit in fast saturation power supply Output voltage is cut off when excessive.Booster circuit and reduction voltage circuit adjust output voltage to setting value.

In one embodiment, the controller also includes RTC power circuits, and RTC power circuits connect It is connected to each circuit and real-time clock is provided.

The controller and control method of the breaker of the present invention realize MCR/HSISC using software mode Function, all has advantage, the controller possesses MCR/HSISC in cost of implementation and detection stability Detect before the memory circuitry of circuit and fast reading and writing, quick startup and dead electricity that controller can be realized No write de-lay.

Brief description of the drawings

The above and other feature of the present invention, property and advantage will be by below in conjunction with the accompanying drawings and real Apply the description of example and become apparent, identical reference represents that identical is special all the time in the accompanying drawings Levy, wherein：

Fig. 1 discloses the structured flowchart of the controller of the breaker according to one embodiment of the invention.

Fig. 2 a and Fig. 2 b disclose liquid crystal in the controller according to the breaker of one embodiment of the invention The circuit diagram of display circuit.

Fig. 3 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart.

Fig. 4 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart.

Fig. 5 a and Fig. 5 b disclose power supply in the controller according to the breaker of one embodiment of the invention The part circuit structure figure of circuit.

Fig. 6 a and Fig. 6 b disclose power supply in the controller according to the breaker of one embodiment of the invention The part circuit structure figure of circuit.

Fig. 7 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart.

Fig. 8 discloses RTC power circuits in the controller according to the breaker of one embodiment of the invention Circuit structure diagram.

Fig. 9 is disclosed in the controller according to the breaker of one embodiment of the invention and carried out The circuit structure diagram of the detection circuit of MCR/HSISC state-detections.

Figure 10 discloses the FB(flow block) of the control method of the breaker according to one embodiment of the invention, Control method MCR/HSISC functions implemented in software.

Figure 11 discloses implementing for the control method of the breaker according to one embodiment of the invention Process.

Embodiment

With reference to shown in Fig. 1, Fig. 1 discloses the controller of the breaker according to one embodiment of the invention Structured flowchart.The controller of the breaker includes：Interface circuit 101, MCR/HSISC detections Circuit 102, signal acquisition circuit 103, single chip machine controlling circuit 105, data storage circuitry 109, Liquid crystal display circuit 106, circuits 107, telecommunication circuit 108, actuating circuit 104, electricity Source circuit 110 and RTC power circuits 111.Wherein interface circuit 101, MCR/HSISC detections Circuit 102, signal acquisition circuit 103, data storage circuitry 109, liquid crystal display circuit 106, key Disk operation circuit 107, telecommunication circuit 108 and actuating circuit 104 are all connected to single chip machine controlling circuit 105, single chip machine controlling circuit 105 carries out data exchange with each above-mentioned circuit and controls foregoing circuit. Power circuit 110 is connected to each above-mentioned circuit to provide power supply.RTC power circuits 111 are connected to Each above-mentioned circuit provides real-time clock.

Interface circuit 101 includes communication interface, exterior I O signaling interfaces.

MCR/HSISC detection circuits 102 are used to detect breaker, such as the division of frame circuit breaker State or malfunction, behind can be discussed in detail MCR/HSISC detect circuit 102 physical circuit.

Signal acquisition circuit 103 is used for the current signal for gathering transformer in breaker, and by electric current Signal is nursed one's health, and current signal is amplified to improve accuracy of detection.Believe for larger electric current Number, signal acquisition circuit 103 carries out one-level amplification, for less current signal, signal acquisition electricity Road 103 carries out two-stage amplification.

Circuits 107, which are connected in operation keyboard, operation keyboard, has operation button or operation Switch, for example realize parameter check and fine adjustment function button, and realize that quick protection seting value is set Fixed rotary coded switch circuit.

Actuating circuit 104 is the output end of single chip machine controlling circuit 105.The rear class of actuating circuit 104 Magnetic flux part is connect, magnetic flux on-line checking circuit is driven by magnetic flux part.Actuating circuit 104 itself can Realize trip action, magnetic flux on-line checking circuit realiration magnetic flux on-line checking function.

Power circuit 110 provides working power for each above-mentioned circuit.

RTC power circuits 111 provide real-time clock power supply, and real-time clock is provided for each circuit.

Telecommunication circuit 108 communicates including two-way, and first via communication is physical link, passes through RS485 Interface and PERCOM peripheral communication.The communication of second tunnel is equipment debugging test port, and being needed according to user can Using RS485 interface shapes or USB external interface forms.

Data storage circuitry 109 is used for the alarm for preserving breaker or record of threading off.In an implementation In example, data storage circuitry 109 includes dual-memory, is quick reading memory and fast literary sketch respectively Enter memory.The quick memory that reads is flash storage, and no write de-lay memory is EEPROM Memory.Only a few critical data is stored in flash storage, these critical datas are that system starts Necessary data when upper electric, store that data in Flash that be conducive to upon power-up of the system can be These data are read in the very short time from Flash and complete startup, software is then entered as early as possible and is controlled Program carries out MCR/HSISC functions.EEPROM is used to realize no write de-lay, such as fast saturation is supplied Electricity and produce fault time etc..EEPROM realizes the no write de-lay data record during threading off. Utilize the above-mentioned FLASH+EEPROM quick reading memories constituted and no write de-lay memory Combination, can realize the data write-in of the digital independent and Millisecond of delicate level, meet controller quick Response starts MCR/HSISC functions, the requirement of power failure data no write de-lay.

Liquid crystal display circuit 106 is used to check controller running status and procedure parameter.Liquid crystal display Circuit 106 includes LCDs.In one embodiment, LCDs is using industrial ultra-wide Warm 6 section-type LCD liquid crystal displays of TN types.The normal work of the additional drive circuit of LCDs in this There was only more than ten uA as electric current, compared with conventional seven segment digital tubes scheme or dot lcd, work Substantially reduced as electric current, the purpose of reduction LCDs power consumption can be reached.In addition, aobvious for enhancing Show effect, typically can all add to LCDs with backlight, the backlight of usual LCDs is moved 2mA or so is generally required as electric current.When the loop current of breaker is smaller, fast saturation power supply capacity It is weaker, it on the one hand can cause the phenomenon of backlight flicker and influence visual effect, it is on the other hand full in speed With power supply capacity it is weaker in the case of, the power supply of the critical circuit of other functions should be met first with full Foot protection requirement, reduces the power consumption of other miscellaneous functions as far as possible.The liquid crystal display circuit 106 is relied on Program monitoring supply voltage, monitoring loop electric current, when loop current is less than setting value, then close the back of the body Light source, so avoids the flicker of backlight, and two come when fast saturation power supply capacity is weaker, this The processing of sample can be to ensure the critical circuit of other functions (such as signal acquisition circuit, actuating circuit) Power supply.

Fig. 2 a and Fig. 2 b disclose liquid crystal in the controller according to the breaker of one embodiment of the invention The circuit diagram of display circuit, wherein Fig. 2 a disclose the first chip of liquid crystal display circuit, and Fig. 2 b take off The second chip of liquid crystal display circuit is shown.Liquid crystal display circuit 106 includes two chips, is respectively First chip U3 and the second chip U4.First chip U3 can use HT1621 chips, the first core Piece U3 is driving chip.Second chip U4 can use LCD_TN chips, and the second chip U4 is liquid The display chip of crystal display screen.Marked in No. 1~No. 8 pins in first chip U3, figure Mark is~SEG8 in SEG7~SEG0, and No. 43~No. 48 pins, figure, respectively With No. 5 in the second chip U4~No. 18 pins, mark is~SEG13 connections in figure. The mode of connection corresponds for pin, is interconnected with the pin that identical SEG is numbered.For example, U3 No. 1 pin SEG7 is connected to U4 No. 12 pin SEG7.The 21 of first chip U3 Number~No. 24 pins, mark is~COM3 in figure, respectively with No. 1 in the second chip U4 Mark is~COM3 connections in~No. 4 pins, figure.The mode of connection corresponds for pin, Interconnected with the pin that identical COM is numbered.For example, U3 No. 21 pin COM0 connections To U4 No. 1 pin COM0.First chip U3 No. 9 pin CS, No. 11 pin WR With No. 12 pin DATA as control end, three control ends are connected respectively to LCDs CPU input and output (I/O) mode bit：PA0, PA1 and PA4, in fig. 2 a, CPU Input and output (I/O) mode bit be respectively labeled as LCD_CS (being connected to No. 9 pins), LCD_WR (being connected to No. 11 pins) and LCD_DATA (being connected to No. 12 pins).The One chip U3 No. 10 pin RD, No. 16 pin VLCD and No. 17 pin VDD are connected to 3.3V dc sources VCC3.3.As shown in Figure 2 a, No. 10 pin RD and No. 17 pin VDD It is directly to 3.3V dc sources VCC3.3, No. 16 pin VLCD and passes through current-limiting resistance R12 It is connected to VCC3.3.VCC3.3 is grounded GND by isolation capacitance C9.First chip U3's No. 13 pin VSS ground connection.Remaining pin in first chip U3 is not without using connecting, in figure It is middle to be represented with "×".

Power circuit 110 provides working power for each circuit.Power circuit 110 need consider because Element includes：Improve fast saturation power supply power supply capacity so that also can when the loop current of breaker is smaller Produce operating voltage.Step-up/down function is provided in a power, it is different in the loop current of breaker It is able to maintain that operating voltage in normal range (NR) when often, it is ensured that controller normal work.Specifically, Power circuit 110 needs to produce 5.0V dc sources, 3.3V dc sources by fast saturation power supply With magnetic flux working power.

Fig. 3 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart.As shown in figure 3, in the part circuit structure, with the input of three tunnels, difference TEST_PWR, additional supply input AP+, AP-, fast saturation power input are inputted for test port PA-B-C.Test port input TEST_PWR input voltage is+24V, test port input TEST_PW is by being connected to magnetic flux out-put supply CT_POWER after diode rectification.Diode D4, D5 are the commutation diodes of example.Additional supply input AP+, AP- are inputted attached by pinboard Power up, voltage is also+24V.Additional supply input AP+, AP- is whole by rectifier bridge and diode Magnetic flux out-put supply CT_POWER is connected to after stream.In the illustrated embodiment, by four two poles Pipe constitutes rectifier bridge, and D6 is the diode of example.Power positive cathode can be effectively prevented after rectifier bridge is set It is anti-inserted.

Fast saturation power input PA-B-C is connected to fast saturation feedback circuit, fast saturation feedback circuit by IGCT V1, comparator U6, reference voltage chip VZ1 and auxiliary circuit composition.IGCT V1 model STD60NF06.Comparator U6 models LM211D.Reference voltage chip VZ1 Model LM4040C25, generation+2.5V reference voltage.Auxiliary circuit includes resistance and electric capacity, Wherein resistance R16, R18, R19, R20, R21, R22, R23 is comparator U6 ratio Resistance, electric capacity C12, C13, C14, C15, C16, C17 are power decoupling filter capacitor.Speed Saturation power input PA-B-C after diode (such as diode D6, D10 of diagram) rectification, On the one hand it is connected to two-way out-put supply：Out-put supply POWER and magnetic flux out-put supply CT_POWER is that subsequent conditioning circuit or device are powered, and is on the other hand connected to IGCT V1, comparator On U6.When output voltage is excessive, comparator U6 sending signals so that IGCT V1 is turned on, Now two-way out-put supply POWER and CT_POWER power supply will be cut off, in order to avoid after damaging Continuous circuit.Reference voltage chip VZ1 provides reference voltage for comparator U6.It should be noted that The effect of fast saturation feedback circuit be using comparator judge speed saturation power supply output voltage whether mistake Greatly, switching device, such as turn on thyristors, to play a part of protection are caused in the case of excessive. Shown in Fig. 3 is a kind of specific implementation of fast saturation feedback circuit, but the physical circuit should not be made For limitation of the present invention.

Fig. 4 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart.Fig. 4 is to produce 5V dc sources VCC5.0 and magnetic flux out-put supply The catenation principle figure of operation voltage required for CT_POWER.In the circuit structure shown in Fig. 4, Including power module M2, build-out resistor, diode and decoupling filter capacitor.In Fig. 4, power supply Module M2 No. 1 pin Vin is connected to POWER, and the POWER is the electricity shown in Fig. 3 Wherein all the way out-put supply POWER in road.Power module M2 No. 2 pin GND ground connection. It can be described behind power module M2 No. 3 pin VccON connection.Resistance R14 and R15 are Build-out resistor, resistance R14 is connected to power module M2 No. 4 pin VccFB and 5V direct currents Between the VCC5.0 of source.Power module M2 No. 5 pin Vccout and 5V dc sources VCC5.0 Connection.Electric capacity C10 and C11 are decoupling filter capacitors.Decoupling filter capacitor C11 is connected to 5V Between dc source VCC5.0 and ground GND, C11 negative pole ground connection.The 6 of power module M2 Number pin GND ground connection.It can be described behind power module M2 No. 7 pin VupON connection. Power module M2 No. 8 pin VupFB are connected to diode D7 by build-out resistor R15, then Magnetic flux out-put supply CT_POWER is connected to via diode D7.Power module M2 No. 9 pipes Pin Vupout is connected with diode D7.Power module M2 No. 10 pin GND ground connection.Decoupling Filter capacitor C10 is connected between diode D7 and ground GND, C10 negative pole ground connection.Equally , a kind of specific implementation shown in Fig. 4, but the physical circuit should not be used as the limit to the present invention System.

As elucidated before, in order to be able to maintain that operating voltage exists when the loop current of breaker is abnormal In normal range (NR), step-up/down function is provided in a power.Wrapped in power module M2 circuit Reduction voltage circuit and booster circuit are included.Fig. 5 a and Fig. 5 b disclose the circuit structure diagram of reduction voltage circuit. Fig. 6 a and Fig. 6 b disclose the circuit structure diagram of booster circuit.

With reference to Fig. 6 a and Fig. 6 b, booster circuit includes binding post J4 (as shown in Figure 6 b) and risen Voltage conversion circuit (as shown in Figure 6 a).No. 1 of binding post J4~No. 4 pins and power supply in Fig. 4 No. 7 of module M2~No. 10 pins are corresponding.Binding post J4 model SIP4, No. 1~4 Number pin is respectively：VupON (No. 1 pin), VupFB (No. 2 pins), Vupout (3 Number pin) and GND (No. 4 pins), corresponding power module M2 VupON (No. 7 pins), VupFB (No. 8 pins), Vupout (No. 9 pins) and GND (No. 10 pins), one a pair It should connect.Change-over circuit shown in Fig. 6 a includes resistance R28~R31, electric capacity C26~C28, two poles Pipe D12, inductance L5, power supply chip U8 (model NCP3064B).R30, R31 in resistance For current-limiting resistance, resistance R29 is current protecting circuit series resistor, and resistance R28 is that magnetic flux exports electricity Source CT_POWER build-out resistor, electric capacity C26, inductance L5, diode D12 are booster type On-off circuit, electric capacity C28 is concussion electric capacity.No. 5 of a resistance R28 termination power supply chip U8 Pin IN and binding post J4 No. 2 pin VupFB, resistance R28 other end ground connection.Diode D12 termination capacitor C26 one end and binding post J4 No. 3 pin Vupout, diode D12 another termination inductance L5 one end and power supply chip U8 No. 1 pin SW COLL.Inductance L5 another terminating resistor R29 one end and power supply chip U8 No. 7 pin IPK, resistance R29 Another terminating resistor R30 one end, power supply chip U8 No. 6 pin VCC (pass through shown in figure Interface Vin connections) and binding post J3 No. 1 pin Vin (with reference to the binding post in Fig. 5 b J3).The resistance R30 other end and power supply chip U8 No. 8 pin DRV COLL, electric capacity C27 One end, resistance R31 one end and binding post J4 No. 1 pin VupON connection.Electric capacity A C28 termination power supply chip U8 No. 3 pin TIM CAP.Electric capacity C26, C27, C28, Resistance R28, R31, power supply chip U8 No. 4 pin GND common grounds.Power supply chip U8's No. 2 pin SW EM are grounded GND.

With reference to Fig. 5 a and Fig. 5 b, reduction voltage circuit includes binding post J3 (as shown in Figure 5 b) and turned Change circuit (as shown in Figure 5 a).No. 2 of binding post J3 and No. 6 pins ground connection GND, No. 1, No. 1 of No. 3~No. 5 pins and power module M2 in Fig. 4, No. 3~No. 5 pins it is corresponding.Wiring Terminal J3 model SIP6, No. 1~No. 6 pins are respectively：Vin (No. 1 pin), GND (No. 2 and No. 6 pins), VccON (No. 3 pins), VccFB (No. 4 pins) and Vccout (No. 5 pins).Wherein No. 1, No. 3~No. 5 pin corresponding power module M2 Vin (No. 1 pipe Pin) VccON (No. 3 pins), VccFB (No. 4 pins) and Vccout (No. 5 pins), Connect one to one.Decompression converting circuit shown in Fig. 5 a includes resistance R24~R37, electric capacity C24~C25, diode D11, inductance L4, power supply chip U7 (model is similarly NCP3064B). Power supply chip U7 No. 1 pin SW COLL is connected with No. 7 pin IPK, No. 1 pin SW COLL is also connected to binding post J3 No. 1 pin Vin by resistance R26, is also connected by Vin No. 6 pins for the power supply chip U8 being connected to shown in Fig. 6 a.Power supply chip U7 No. 2 pin SW EM It is connected to inductance L4 one end, diode D11 one end.Electric pole L4 other end connection terminals Sub- J3 No. 5 pin Vccout.Diode D11 other end ground connection.The 3 of power supply chip U7 Number pin TIM CAP are grounded by electric capacity C24.Power supply chip U7 No. 4 pin GND ground connection. Power supply chip U7 No. 5 pin IN are connected to binding post J3 No. 4 pin VccFB, also lead to Cross resistance 27 and electric capacity C25 is connected to binding post J3 No. 5 pin Vccout.Power supply chip U7 No. 6 pin VCC are connected to binding post J3 No. 1 pin Vin.Power supply chip U7's No. 8 pin DRV COLL are connected to binding post J3 No. 3 pin VccON, also pass through resistance R25 is grounded, and binding post J3 No. 1 pin Vin is connected to by resistance R24.

Likewise, shown in Fig. 5 a, 5b, 6a, 6b being only booster circuit or reduction voltage circuit A kind of specific implementation, but the physical circuit should not be taken as limiting the invention.

Fig. 7 discloses the portion of power circuit in the controller according to the breaker of one embodiment of the invention Parallel circuit structure chart, Fig. 7 is the catenation principle figure for producing 3.3V dc sources VCC3.3.The part Circuit includes resistance R17, electric capacity C18-C23, inductance L3, power supply chip U5 (models REG1117-33).Resistance R17 is current-limiting resistance, electric capacity C18-C23 decoupling filter capacitors, electricity Sense L3 is afterflow inductance.Resistance R17 mono- terminates 5.0V dc sources VCC5.0 (from Fig. 4's Circuit), another termination capacitor C18 of resistance R17 one end, C23 one end, power supply chip U5 No. 3 pin VIN.An inductance L3 termination 3.3V dc sources VCC3.3, electric capacity C19 One end, C20 one end, inductance L3 another termination capacitor C21 one end, C22 one end, Power supply chip U5 No. 2 pin VO and No. 4 pin VOUT.The electric capacity C18-C23 other end, Power supply chip U5 No. 1 pin GND common ground.A kind of specific implementation shown in Fig. 7, but The physical circuit should not be taken as limiting the invention.

Above-mentioned liquid crystal display circuit 106 and power circuit 110 embodies " the low work(of the present invention jointly Consumption " design.On the one hand, power circuit 110 improves the power supply capacity of fast saturation power supply, and has Standby booster circuit and reduction voltage circuit can when fast saturation supply voltage is relatively low booster circuit by magnetic flux voltage Rise to its safe action voltage.On the other hand, the power consumption of circuit devcie is reduced.Liquid crystal display circuit In LCDs select industry ultra-wide temperature TN 6 section-type LCD liquid crystal displays of type, additional driving Its running current of circuit only has more than ten uA, with conventional seven segment digital tubes scheme or lattice liquid Crystalline substance, operating current is substantially reduced.When the smaller and fast saturation power supply capacity of breaker loop current is weaker, Close backlight, one avoids the flicker of backlight, two come first ensure that for other functions it is critical Circuit is powered.Single chip machine controlling circuit also selects the 32 of low-power consumption intermediate size CortexM0 kernels 8-digit microcontroller STM32F051R8T6.

Fig. 8 discloses RTC power circuits in the controller according to the breaker of one embodiment of the invention Circuit structure diagram.RTC power circuits (real-time clock power circuit) include resistance R1, two poles Pipe D20, electric capacity C1, button cell MJP1 (model MS920SE).Resistance R1 is current limliting Resistance, electric capacity C1 is storage capacitor.A resistance R1 termination 3.3V dc source VCC3.3, Resistance R1 another terminating diode D20 No. 1 end (mark is in figure).Electric capacity C1 Termination CPU VBAT pins, diode D20 No. 3 ends (mark is in figure). Button cell MJP1 one end (positive pole) connects diode D20 No. 2 ends (mark is in figure). Electric capacity C1, button cell the MJP1 other end (negative pole) common ground GND.Shown in Fig. 8 A kind of specific implementation, but the physical circuit should not be taken as limiting the invention.

Embodiments in accordance with the present invention, MCR/HSISC functions are realized by software.MCR/HSISC has Include MCR functions, i.e. making current release function and HSISC functions for body, i.e., high setting The short-circuit instantaneous protection function of value.In implementation process, MCR functions time interval be breaker by The 100ms being changed into after closure is disconnected, HSISC functions are entered after more than 100ms.So Also there is one when MCR/HSISC software is realized according on off state selectively unlocking or closing The problem of MCR or HSISC functions.MCR/HSISC inspections in structured flowchart shown in Fig. 1 Slowdown monitoring circuit 102 is used to realize above-mentioned function.Fig. 9 discloses the above-mentioned MCR/HSISC shapes of progress The circuit structure diagram of the detection circuit of state detection.The detection circuit includes optocoupler ISO1, model TLP181.Optocoupler ISO1 exports POWER and 3.3V dc sources VCC3.3 by power supply Power supply.Specifically, optocoupler ISO1 No. 1 pin is connected to POWER by resistance R11, Optocoupler ISO1 No. 3 pins are connected to VCC3.3, and optocoupler ISO1 No. 4 pins lead to Resistance R13 ground connection is crossed, electric capacity C8 is connected across No. 1 of optocoupler ISO1 between No. 2 pins. Resistance R11, R13 and electric capacity C8 carry out voltage stabilizing and filtering.Division status signal CO_Input is defeated Enter optocoupler ISO1 No. 2 pins.The I/O to CPU is exported after isolating through optocoupler ISO1 Mode bit, in the illustrated embodiment, STATE_CO signals is exported by ISO1 No. 3 pins. In one embodiment, CPU uses 32 8-digit microcontroller STM32F051R8T6 chips, by I/O Mode bit PA15 receives above-mentioned output signal.

Figure 10 discloses the flow chart of the control method of the breaker according to one embodiment of the invention, should Control method MCR/HSISC functions implemented in software.This method can be based on the open circuit shown in Fig. 1 The controller of device is realized.As shown in Figure 10, the control method includes following process：

S102, digital independent and signal detection step.In this step, the reading of Flash data is carried out Take and handle, and by detecting circuit detection MCR/HSISC status signals (as shown in Figure 9) (i.e. STATE_CO signals).In one embodiment, the data of the controller of the breaker shown in Fig. 1 Storage circuit 109 includes flash storage and eeprom memory.Flash storage conduct Fast storage can realize quick digital independent, thus, it is possible to realize controller after the power-up fast Speed starts.In one embodiment, step S102 execution only needs 2ms~3ms time.From A small amount of critical data is taken as delicate level in flash storage, passes through MCR/HSISC detection electricity The time that road obtains MCR/HSISC status signals is also very short.Controller can 2ms~3ms when The interior process for completing step S102 simultaneously enters subsequent step, that is, starts MCR/HSISC functions.

S104, function selection step.In this step, selection performs MCR functions or HSISC Function.The selection is to be made based on MCR/HSISC signals with the presence or absence of saltus step.According to the step Implementing result, if perform MCR functions can if enter step S106, if perform HSISC Function then enters step S108.

S106, execution MCR functions.In this step, start timer and perform MCR functions. If meeting the execution condition of MCR functions and implementing to thread off, process terminates.If performed End condition is run into journey, then process terminates.If timer timing is reached and process is not tied yet Beam, then terminate execution step S106 and transfer to perform step S108.

S108, execution HSISC functions.In this step, HSISC functions are performed.If met The execution condition of HSISC functions simultaneously is implemented to thread off, then process terminates.If run into the process of implementation End condition, then process terminate.

Although herein it is to be appreciated that being not shown in figure, implementing also to include to quick after dropout step Write the process that memory, i.e. eeprom memory write data.In one embodiment, exist Instruction of threading off send after to (period time for having 15ms-30ms before the complete dead electricity of controller Not breaker break, refer to circuit disconnect after controller voltage drop to operating voltage it The preceding period), during this period of time, EERPOM can complete data write-in, and record was threaded off The related data of journey.

Figure 11 discloses implementing for the control method of the breaker according to one embodiment of the invention Process.As shown in figure 11, the process implemented is as follows：

Flash data is read in and processing.

Detect electric circuit inspection MCR/HSISC signals.

Judge that MCR/HSISC signals whether there is saltus step, if then entering branch one, if otherwise entering Enter branch two.

In branch one (saltus step is judged as YES), continuation judges to switch to have to have no way of during signal saltus step to assign to conjunction Process.If it is not, then process terminates.If so, then continuing to judge whether MCR functions open.

If MCR functions are not turned on, process terminates.

If MCR functions are opened, start 100ms timers.

Judge whether MCR timers reach 100ms, (i.e. timer when timer does not arrive 100ms It is not judged as YES to 100ms), then judge whether value of the sampled value after the processing that quantizes is more than MCR Set amperage.Judge whether timer time reaches 100ms and judgement again if it is not, then returning Whether value of the sampled value after the processing that quantizes, which is more than MCR, sets amperage.

If so, i.e. whether value of the sampled value after the processing that quantizes is more than MCR setting amperages, then MCR counters add one.

Judge whether MCR counter values are more than 3, instructed if so, sending dropout, afterwards process knot Beam.Judge whether value of the sampled value after the processing that quantizes is more than MCR and sets ampere if it is not, returning Value.

It is not over, is transferred to down if process remains unchanged when timer 100ms timing is reached The branch two in face performs.

In branch two (saltus step is judged as NO), then MCR/HSISC signal designation current switch is judged Whether it is conjunction, if it is not, then process terminates.

If so, i.e. MCR/HSISC signal designations current switch then judges that HSISC functions are to close It is no to open, if it is not, then terminating.

Judge whether HSISC functions open, if so, then judging value of the sampled value after the processing that quantizes Whether it is more than HSISC and sets amperage, if it is not, then process terminates.

Judge whether value of the sampled value after the processing that quantizes is more than HSISC and sets amperage, if so, HSISC counters add one.

Judge whether HSISC counter values are more than 3, instructed if so, sending dropout, afterwards process Terminate.Judge whether value of the sampled value after the processing that quantizes is more than HSISC settings if it is not, then returning Amperage.

Although likewise, be not shown in figure, after dropout instruction is sent, also oriented EERPOM Write the process of data.

The controller and control method of the breaker of the present invention realize MCR/HSISC using software mode Function, all has advantage, the controller possesses MCR/HSISC in cost of implementation and detection stability Detect before the memory circuitry of circuit and fast reading and writing, quick startup and dead electricity that controller can be realized No write de-lay.

Above-described embodiment be available to be familiar with person in the art realize or using the present invention, it is ripe Those skilled in the art are known without departing from the present invention in the case of the inventive idea to do above-described embodiment Go out various modifications or change, thus protection scope of the present invention is not limited by above-described embodiment, and answer This is the maximum magnitude for meeting the inventive features that claims are mentioned.

Claims (10)

1. a kind of control method of the controller of breaker, it is characterised in that including：

S102, digital independent and signal detection step, read memory read data from quick, pass through MCR/HSISC detects electric circuit inspection MCR/HSISC status signals；

S104, function selection step, selection perform MCR functions or HSISC functions, the selection It is to be made based on MCR/HSISC signals with the presence or absence of saltus step, can if performing MCR functions Then enter step S106, step S108 is entered if HSISC functions are performed；

S106, execution MCR functions, start timer and simultaneously perform MCR functions, if meeting MCR The execution condition of function simultaneously is implemented to thread off, then process terminates, if running into termination bar in the process of implementation Part, then process terminate, if timer timing reach and process is not over yet, terminate perform Step S106 transfers to perform step S108；

S108, execution HSISC functions, perform HSISC functions, if meeting HSISC functions Execution condition and implement thread off, then process terminates.If running into end condition in the process of implementation, Then process terminates.

2. the control method of the controller of breaker as claimed in claim 1, it is characterised in that real Also include the process to no write de-lay memory write data when applying dropout, the data of write-in are and dropout Related data.

3. the control method of the controller of breaker as claimed in claim 1, it is characterised in that number It is 2ms~3ms according to the execution time of reading and signal detection step.

4. the control method of the controller of breaker as claimed in claim 1, it is characterised in that

The quick reading memory is flash storage；

The no write de-lay memory is eeprom memory；

The MCR/HSISC detections circuit includes optocoupler.

5. a kind of controller of breaker, it is characterised in that including：Single chip machine controlling circuit and in Single chip machine controlling circuit connection interface circuit, MCR/HSISC detection circuit, signal acquisition circuit, Data storage circuitry, liquid crystal display circuit, circuits, telecommunication circuit, actuating circuit, also Including power circuit, power circuit is connected to each above-mentioned circuit and powered for the circuit；

Wherein described data storage circuitry includes quick reading memory and no write de-lay memory；

Single chip machine controlling circuit reads memory read data and passed through after starting from quick MCR/HSISC detect electric circuit inspection MCR/HSISC status signals, selection perform MCR functions or Person's HSISC functions, dropout instruction are sent when meeting execution condition dynamic by actuating circuit execution dropout Make.

6. the controller of breaker as claimed in claim 5, it is characterised in that single-chip microcomputer control electricity Road is also to no write de-lay memory write data after instruction of threading off is sent, and the data of write-in are and dropout Related data.

7. the controller of breaker as claimed in claim 6, it is characterised in that

The quick reading memory is flash storage；

The no write de-lay memory is eeprom memory

8. the controller of breaker as claimed in claim 6, it is characterised in that

The MCR/HSISC detections circuit includes optocoupler.

9. the controller of breaker as claimed in claim 5, it is characterised in that the power circuit It is fast saturation power supply, the power circuit includes fast saturation feedback circuit, booster circuit and reduction voltage circuit；

Fast saturation feedback circuit cuts off output voltage when the output voltage of fast saturation power supply is excessive；

Booster circuit and reduction voltage circuit adjust output voltage to setting value.

10. the controller of breaker as claimed in claim 5, it is characterised in that also including RTC Power circuit, RTC power circuits are connected to each described circuit and provide real-time clock.