CN111146766A - A time-controlled reclosing and motor protection system of a circuit breaker - Google Patents
A time-controlled reclosing and motor protection system of a circuit breaker Download PDFInfo
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- CN111146766A CN111146766A CN202010048140.1A CN202010048140A CN111146766A CN 111146766 A CN111146766 A CN 111146766A CN 202010048140 A CN202010048140 A CN 202010048140A CN 111146766 A CN111146766 A CN 111146766A
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- 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
- H02H7/08—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 for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
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Abstract
本发明涉及一种断路器的时控重合闸及电动机保护系统，包括电源模块、时钟控制模块、主控制模块、驱动模块以及电机，所述电源模块为系统提供电源，所述时钟控制模块为主控制模块提供时钟控制信号，所述主控制模块为所述驱动模块提供控制信号，所述驱动模块为所述电机提供驱动信号。本发明技术方案，具有根据用户设定的时间，通过单片机控制电机驱动断路器，来自动打开和关闭各种用电设备的电源的技术效果。
The invention relates to a time-controlled reclosing and motor protection system of a circuit breaker, comprising a power supply module, a clock control module, a main control module, a drive module and a motor. The power supply module provides power for the system, and the clock control module is the main control module. A control module provides a clock control signal, the main control module provides a control signal for the driving module, and the driving module provides a driving signal for the motor. The technical scheme of the present invention has the technical effect of automatically turning on and off the power supply of various electrical equipment by controlling the motor to drive the circuit breaker through the single chip computer according to the time set by the user.
Description
Technical Field
The invention relates to a time control reclosing and motor protection system of a circuit breaker.
Background
In the scheme of the high-power time controller in the prior art, the circuit breaker is adopted for protection, the contactor is controlled by the time control relay, and the circuit is complex, high in cost and poor in reliability. The three functions are integrated together and the motor protection function can be added.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a time control reclosing and motor protection system of a circuit breaker, which automatically opens and closes the power supply of various electric equipment by controlling a motor to drive the circuit breaker through a single chip microcomputer according to the time set by a user.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a time control reclosing and motor protection system of circuit breaker, includes power module, clock control module, main control module, drive module and motor, power module provides the power for the system, clock control module provides clock control signal for main control module, main control module does drive module provides control signal, drive module does the motor provides drive signal.
The invention further provides that: the device also comprises an external control signal module, wherein the external control signal module comprises a current sampling unit, an overload current setting unit and a time control module.
The invention further provides that: the current sampling unit includes: the 1 st pin of the current transformer is connected with one ends of resistors RL1 and RL2, and the 2 nd pin of the current transformer is connected with the ground. The other end of the resistor RL2 is connected to one end of the capacitor C5 and ground, and the other end of the resistor RL1 is connected to one end of the resistor R11 and one end of the capacitor C5. The other end of the resistor R11 is connected with the cathode of the diode D2, and the anode of the diode D2 is connected with VCC. One ends of the resistors RL1 and R11 are connected with the 2 nd pin of the socket P4, and output current sampling signals. The overcurrent setting unit includes: VCC is connected with one end of the resistor R17, the other end of the resistor is connected with the 1 st pin of the adjustable resistor RP1, the 3 rd pin of the adjustable resistor RP1 is suspended, and the 2 nd pin of the adjustable resistor RP1 is connected with one end of the resistor R18 and outputs a set current signal. The other end of the resistor R18 is connected to ground. The time control module outputs a time control signal.
The invention further provides that: the power module includes vary voltage unit, voltage stabilizing unit, vary voltage unit includes: the anode of the diode D3 is connected with the L line, the cathode is connected with the anode of the electrolytic capacitor EC1 and the 4 th pin of the power chip, and current is input. The 2 nd pin of the power chip is connected with one ends of the resistors R4 and R7, and the other end of R4 is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip. One end of the R7 is connected with the capacitor C3 and the cathode of the diode D2, the other end of the capacitor C3 is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip, the anode of the diode D2 is connected with the R6, one end of the inductor, one end of the R3, the anode of the electrolytic capacitor C1 and one end of the capacitor C2, the output is 12V, the cathode of the electrolytic capacitor C1 and the other end of the capacitor C2 are connected with the ground, the other end of the R3 is connected with the R5, the other end of the R5 is connected with the ground, the other end of the inductor is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip, the other end of the R6 is connected with the ground, the 1 st pin of the power chip is connected with one end of the capacitor C5, the other end of the capacitor C5 is connected with the 5 th, 6 th, 7 th and 8; the voltage stabilization unit includes: the 1 st pin of the three-terminal regulator is connected with the 12V output, the 2 nd pin is connected with the ground, the 3 rd pin is connected with one end of a resistor R2 and outputs 5V, the other end of a resistor R2 is connected with the anode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the ground, the cathode of a diode D1 is connected with one end of a resistor R1 and one end of a capacitor C4 and outputs 1.5V, one end of the resistor R1 is connected with the anode of a battery, and the cathode of the battery is connected with the other end of a capacitor C4 and is.
The invention further provides that: the main control module comprises a single chip microcomputer ATMEGA8L and a peripheral circuit, the single chip microcomputer ATMEGA8L and the peripheral circuit comprise a power supply part, a signal input part and a signal output part, and the power supply part comprises: the 3 rd, 5 th and 21 st pins are directly connected to the ground, the 4 th and 6 th pins are connected to 5V and one end of C10, and the other end of C10 is connected to the ground; the signal input section includes: the 19 th pin is connected with a voltage sampling input signal, the 8 th pin is connected with an external control input signal, the 29 th, 15 th, 16 th and 17 th pins are respectively connected with the 3 th, 4 th, 5 th and 6 th pins of a program writing socket, and the 1 st and 2 nd pins of the program writing interface are respectively connected with the ground and the 5V. The 2 nd pin is connected with one end of a microswitch J3 and inputs a gear positioning signal, and the 1 st pin is connected with one end of a toggle switch J5 and inputs an automatic and manual setting signal; the signal output section includes: and a 7 th pin outputs a control signal to the motor driving part.
The invention further provides that: the driving module includes: the positive electrode of D7 is connected with the 7 th pin of the single chip microcomputer ATMEGA8L, one end of R5 is connected with the negative electrode of D7, the other end of R5 is connected with the bases of C5 and V1-9013, the other end of C5, the e pole of V1-9013 is connected to the ground, the C pole of V1-9013 is connected to the negative electrode of the motor, and the positive electrode of the motor is connected with 12V.
The invention further provides that: still include the thunderbolt protection module, the thunderbolt protection module includes: one end of the piezoresistor 10K471 is connected with the L line, and the other end is connected with the N line. One ends of the winding resistors R13 and R14 are connected, and the other ends are respectively connected with the L line and the N line.
The invention further provides that: still include the voltage sampling module, the voltage sampling module includes: the anode of the diode M7 is connected with the L line, the cathode is connected with one end of a resistor R6, the resistors R6, R7 and R8 are connected in series end to end, the other end of R8 is connected with one ends of R9 and C6, and the other ends of R9 and C6 are connected with the ground.
The invention further provides that: still include switch and pilot lamp module: one end of the microswitch is connected with the 2 nd pin of the singlechip, the other end of the microswitch is connected to the ground, a gear positioning signal is output when the microswitch is closed, one end of the toggle switch is connected with the 1 st pin of the singlechip, the other end of the toggle switch is connected with the anode of the diode D7, and the cathode of the diode D7 is connected to the ground, so that manual and automatic state switching is realized.
According to the technical scheme, the clock control and motor protection functions are added on the basis of the existing reclosure. The power supply of various electric equipment can be automatically turned on and off according to the time set by a user; the overload, phase failure, unbalance and locked rotor protection of the motor are realized.
Drawings
FIG. 1 is a functional block diagram of an embodiment of the present invention;
FIG. 2 is a circuit diagram of an embodiment of a power module of the present invention;
FIG. 3 is a circuit diagram of an embodiment of a lightning protection module and a voltage sampling module of the present invention;
FIG. 4 is a circuit diagram of an embodiment of a current sampling unit and a signal amplifying unit according to the present invention;
FIG. 5 is a circuit diagram of an embodiment of an overload determination unit, an underrun determination unit, and a clock control module according to the present invention;
FIG. 6 is a circuit diagram of an embodiment of the single chip, the driving module, and the switch and indicator light module of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings and examples.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Referring to fig. 1-2, the time-controlled reclosing and motor protection system of a circuit breaker disclosed by the invention comprises a power module 1, a clock control module 10, a master control module, a driving module 4 and a motor 11, wherein the power module 1 provides power for the system, the clock control module 10 provides a clock control signal for the master control module, the master control module provides a control signal for the driving module 4, and the driving module 4 provides a driving signal for the motor 11.
The embodiment further provides that: the device also comprises an external control signal module, wherein the external control signal module comprises a current sampling unit, an overload current setting unit and a time control module.
The embodiment further provides that: the current sampling unit includes: the 1 st pin of the current transformer is connected with one ends of resistors RL1 and RL2, and the 2 nd pin of the current transformer is connected with the ground. The other end of the resistor RL2 is connected to one end of the capacitor C5 and ground, and the other end of the resistor RL1 is connected to one end of the resistor R11 and one end of the capacitor C5. The other end of the resistor R11 is connected with the cathode of the diode D2, and the anode of the diode D2 is connected with VCC. One ends of the resistors RL1 and R11 are connected with the 2 nd pin of the socket P4, and output current sampling signals. The overcurrent setting unit includes: VCC is connected with one end of the resistor R17, the other end of the resistor is connected with the 1 st pin of the adjustable resistor RP1, the 3 rd pin of the adjustable resistor RP1 is suspended, and the 2 nd pin of the adjustable resistor RP1 is connected with one end of the resistor R18 and outputs a set current signal. The other end of the resistor R18 is connected to ground. The time control module outputs a time control signal.
The embodiment further provides that: the power module 1 comprises a transformation unit and a voltage stabilization unit, wherein the transformation unit comprises: the anode of the diode D3 is connected with the L line, the cathode is connected with the anode of the electrolytic capacitor EC1 and the 4 th pin of the power chip, and current is input. The 2 nd pin of the power chip is connected with one ends of the resistors R4 and R7, and the other end of R4 is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip. One end of the R7 is connected with the capacitor C3 and the cathode of the diode D2, the other end of the capacitor C3 is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip, the anode of the diode D2 is connected with the R6, one end of the inductor, one end of the R3, the anode of the electrolytic capacitor C1 and one end of the capacitor C2, the output is 12V, the cathode of the electrolytic capacitor C1 and the other end of the capacitor C2 are connected with the ground, the other end of the R3 is connected with the R5, the other end of the R5 is connected with the ground, the other end of the inductor is connected with the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip, the other end of the R6 is connected with the ground, the 1 st pin of the power chip is connected with one end of the capacitor C5, the other end of the capacitor C5 is connected with the 5 th, 6 th, 7 th and 8; the voltage stabilization unit includes: the 1 st pin of the three-terminal regulator is connected with the 12V output, the 2 nd pin is connected with the ground, the 3 rd pin is connected with one end of a resistor R2 and outputs 5V, the other end of a resistor R2 is connected with the anode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the ground, the cathode of a diode D1 is connected with one end of a resistor R1 and one end of a capacitor C4 and outputs 1.5V, one end of the resistor R1 is connected with the anode of a battery, and the cathode of the battery is connected with the other end of a capacitor C4 and is.
The embodiment further provides that: the main control module comprises a single chip microcomputer ATMEGA8L and a peripheral circuit, the single chip microcomputer ATMEGA8L and the peripheral circuit comprise a power supply part, a signal input part and a signal output part, and the power supply part comprises: the 3 rd, 5 th and 21 st pins are directly connected to the ground, the 4 th and 6 th pins are connected to 5V and one end of C10, and the other end of C10 is connected to the ground; the signal input section includes: the 19 th pin is connected with a voltage sampling input signal, the 8 th pin is connected with an external control input signal, the 29 th, 15 th, 16 th and 17 th pins are respectively connected with the 3 th, 4 th, 5 th and 6 th pins of a program writing socket, and the 1 st and 2 nd pins of the program writing interface are respectively connected with the ground and the 5V. The 2 nd pin is connected with one end of a microswitch J3 and inputs a gear positioning signal, and the 1 st pin is connected with one end of a toggle switch J5 and inputs an automatic and manual setting signal; the signal output section includes: the 7 th pin outputs a control signal to a driving part of the motor 11.
The embodiment further provides that: the drive module 4 includes: the positive electrode of D7 is connected with the 7 th pin of the single chip microcomputer ATMEGA8L, one end of R5 is connected with the negative electrode of D7, the other end of R5 is connected with bases of C5 and V1-9013, the other end of C5, the e pole of V1-9013 is connected to the ground, the C pole of V1-9013 is connected with the negative electrode of the motor 11, and the positive electrode of the motor 11 is connected with 12V.
The embodiment further provides that: still include lightning protection module 2, lightning protection module 2 includes: one end of the piezoresistor 10K471 is connected with the L line, and the other end is connected with the N line. One ends of the winding resistors R13 and R14 are connected, and the other ends are respectively connected with the L line and the N line.
The embodiment further provides that: still include voltage sampling module 3, voltage sampling module 3 includes: the anode of the diode M7 is connected with the L line, the cathode is connected with one end of a resistor R6, the resistors R6, R7 and R8 are connected in series end to end, the other end of R8 is connected with one ends of R9 and C6, and the other ends of R9 and C6 are connected with the ground.
The embodiment further provides that: still include switch and pilot lamp module: one end of the microswitch is connected with the 2 nd pin of the singlechip, the other end of the microswitch is connected to the ground, a gear positioning signal is output when the microswitch is closed, one end of the toggle switch is connected with the 1 st pin of the singlechip, the other end of the toggle switch is connected with the anode of the diode D7, and the cathode of the diode D7 is connected to the ground, so that manual and automatic state switching is realized.
According to the technical scheme, the clock control and motor protection functions are added on the basis of the existing reclosure. The power supply of various electric equipment can be automatically turned on and off according to the time set by a user; the overload, phase failure, unbalance and locked rotor protection of the motor are realized.
Claims (9)
1. The utility model provides a time control reclosing and motor protection system of circuit breaker which characterized in that: including power module, clock control module, main control module, drive module and motor, power module provides the power for the system, clock control module provides clock control signal for main control module, main control module does drive module provides control signal, drive module does the motor provides drive signal.
2. The timed reclosing and motor protection system of a circuit breaker of claim 1, wherein: the device also comprises an external control signal module, wherein the external control signal module comprises a current sampling unit, an overload current setting unit and a time control module.
3. The timed reclosing and motor protection system of a circuit breaker of claim 2, wherein: the current sampling unit includes: a 1 st pin of the current transformer is connected with one ends of resistors RL1 and RL2, and a 2 nd pin of the current transformer is connected with the ground; the other end of the resistor RL2 is connected with one end of the capacitor C5 and the ground, and the other end of the resistor RL1 is connected with one end of the resistor R11 and one end of the capacitor C5; the other end of the resistor R11 is connected with the cathode of a diode D2, and the anode of a diode D2 is connected with VCC; one ends of resistors RL1 and R11 are connected with the 2 nd pin of the socket P4 and output current sampling signals; the overcurrent setting unit includes: VCC is connected with one end of the resistor R17, the other end of the resistor is connected with the 1 st pin of the adjustable resistor RP1, the 3 rd pin of the adjustable resistor RP1 is suspended, the 2 nd pin of the adjustable resistor RP1 is connected with one end of the resistor R18, and a set current signal is output; the other end of the resistor R18 is connected with the ground; the time control module outputs a time control signal.
4. The timed reclosing and motor protection system of a circuit breaker of claim 1, wherein: the power module includes vary voltage unit, voltage stabilizing unit, vary voltage unit includes: the anode of the diode D3 is connected with the L wire, the cathode is connected with the anode of the electrolytic capacitor EC1, the 4 th pin of the power chip, the input current, the 2 nd pin of the power chip is connected with one ends of the resistors R4 and R7, the other end of the R4 is connected with the 5 th, 6 th, 7 th and 8 th pins of the power chip, one end of the R7 is connected with the cathode of the capacitor C3 and the diode D2, the other end of the capacitor C3 is connected with the 5 th, 6 th, 7 th and 8 th pins of the power chip, the anode of the diode D2 is connected with the R6, one end of the inductor, one end of the R3, the anode of the electrolytic capacitor C1, one end of the capacitor C2, the output 12V, the cathode of the electrolytic capacitor C1 and the other end of the capacitor C2 are connected with the ground, the other end of the R3 is connected with the R5, the other end of the R5 is connected with the ground, the other end of the inductor is connected with the 5 th, 6 th, 7 th, 8, the other end of the capacitor C5 is connected to the 5 th, 6 th, 7 th and 8 th pins of the output pin of the power chip, the output pin of the power chip is connected with the cathode of the diode D4, and the anode of the diode D4 is connected to the ground; the voltage stabilization unit includes: the 1 st pin of the three-terminal regulator is connected with the 12V output, the 2 nd pin is connected with the ground, the 3 rd pin is connected with one end of a resistor R2 and outputs 5V, the other end of a resistor R2 is connected with the anode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the ground, the cathode of a diode D1 is connected with one end of a resistor R1 and one end of a capacitor C4 and outputs 1.5V, one end of the resistor R1 is connected with the anode of a battery, and the cathode of the battery is connected with the other end of a capacitor C4 and is.
5. The timed reclosing and motor protection system of a circuit breaker of claim 1, wherein: the main control module comprises a single chip microcomputer ATMEGA8L and a peripheral circuit, the single chip microcomputer ATMEGA8L and the peripheral circuit comprise a power supply part, a signal input part and a signal output part, and the power supply part comprises: the 3 rd, 5 th and 21 st pins are directly connected to the ground, the 4 th and 6 th pins are connected to 5V and one end of C10, and the other end of C10 is connected to the ground; the signal input section includes: the 19 th pin is connected with a voltage sampling input signal, the 8 th pin is connected with an external control input signal, the 29 th, 15 th, 16 th and 17 th pins are respectively connected with the 3 th, 4 th, 5 th and 6 th pins of a program writing socket, and the 1 st and 2 nd pins of the program writing interface are respectively connected with the ground and 5V; the 2 nd pin is connected with one end of a microswitch J3 and inputs a gear positioning signal, and the 1 st pin is connected with one end of a toggle switch J5 and inputs an automatic and manual setting signal; the signal output section includes: and a 7 th pin outputs a control signal to the motor driving part.
6. The timed reclosing and motor protection system of a circuit breaker of claim 5, wherein: the driving module includes: the positive electrode of D7 is connected with the 7 th pin of the single chip microcomputer ATMEGA8L, one end of R5 is connected with the negative electrode of D7, the other end of R5 is connected with the bases of C5 and V1-9013, the other end of C5, the e pole of V1-9013 is connected to the ground, the C pole of V1-9013 is connected to the negative electrode of the motor, and the positive electrode of the motor is connected with 12V.
7. The timed reclosing and motor protection system of a circuit breaker of claim 1, wherein: still include the thunderbolt protection module, the thunderbolt protection module includes: one end of the piezoresistor 10K471 is connected with the L line, the other end is connected with the N line, one ends of the winding resistors R13 and R14 are connected, and the other ends are respectively connected with the L line and the N line.
8. The timed reclosing and motor protection system of a circuit breaker of claim 1, wherein: still include the voltage sampling module, the voltage sampling module includes: the anode of the diode M7 is connected with the L line, the cathode is connected with one end of a resistor R6, the resistors R6, R7 and R8 are connected in series end to end, the other end of R8 is connected with one ends of R9 and C6, and the other ends of R9 and C6 are connected with the ground.
9. The timed reclosing and motor protection system of a circuit breaker of claim 5, wherein: still include switch and pilot lamp module: one end of the microswitch is connected with the 2 nd pin of the singlechip, the other end of the microswitch is connected to the ground, a gear positioning signal is output when the microswitch is closed, one end of the toggle switch is connected with the 1 st pin of the singlechip, the other end of the toggle switch is connected with the anode of the diode D7, and the cathode of the diode D7 is connected to the ground, so that manual and automatic state switching is realized.
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| CN202010048140.1A CN111146766A (en) | 2020-01-16 | 2020-01-16 | A time-controlled reclosing and motor protection system of a circuit breaker |
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| CN202010048140.1A CN111146766A (en) | 2020-01-16 | 2020-01-16 | A time-controlled reclosing and motor protection system of a circuit breaker |
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| 王斌: "基于ADD1021的电力线载波抄表终端设计", 中国优秀硕士学位论文全文数据库工程科技II辑, no. 6, 15 June 2013 (2013-06-15), pages 42 - 43 * |
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Application publication date: 20200512 |