CN216904273U - Motor protection control device - Google Patents
Motor protection control device Download PDFInfo
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- CN216904273U CN216904273U CN202220477104.1U CN202220477104U CN216904273U CN 216904273 U CN216904273 U CN 216904273U CN 202220477104 U CN202220477104 U CN 202220477104U CN 216904273 U CN216904273 U CN 216904273U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- 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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
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Abstract
The motor protection control device of the present invention includes: the system comprises a main control module, a three-phase measurement type current transformer, a three-phase protection type current transformer, a three-phase measurement type voltage transformer, a switching value input module, a relay output module, a serial communication module, a display operation module and an industrial Ethernet communication module; the main control module comprises a microcontroller 1 and a high-speed serial communication interface 1 which are connected, primary sides of a three-phase measurement type current transformer, a three-phase protection type current transformer and a three-phase measurement type voltage transformer are all connected with a main loop of the motor, secondary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are all connected with the microprocessor 1, a switching value input module and a relay output module are all connected with the microcontroller 1, and the serial communication module is connected with the high-speed serial communication interface 1; the display operation module comprises a microcontroller 2, an indicator light, a display, a high-speed serial communication interface 4, a closing button and an opening button; the industrial Ethernet communication module comprises a microprocessor 3, a high-speed serial communication interface 2 and an RJ45 interface.
Description
Technical Field
The utility model relates to the technical field of motor protection, in particular to a motor protection control device.
Background
The domestic low-voltage three-phase alternating-current motor is widely applied and generally has the functions of measurement, control, communication and the like, but the domestic motor has further improved space in the aspects of motor protection control, communication and the like at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel motor protection control device aiming at the problems and the defects in the prior art.
The utility model solves the technical problems through the following technical scheme:
the utility model provides a motor protection control device which is characterized by comprising a main control module, a three-phase measurement type current transformer, a three-phase protection type current transformer, a three-phase measurement type voltage transformer, a switching value input module, a relay output module, a serial communication module, a display operation module and an industrial Ethernet communication module, wherein the main control module is used for controlling the three-phase measurement type current transformer;
the main control module comprises a microcontroller 1 and a high-speed serial communication interface 1, the microcontroller 1 is electrically connected with the high-speed serial communication interface 1, the primary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are electrically connected with a main loop of the motor, the secondary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are electrically connected with the microprocessor 1, one ends of the switching value input module and the relay output module are electrically connected with the microcontroller 1, the other ends of the switching value input module and the relay output module are electrically connected with the main loop of the motor, one end of the serial communication module is electrically connected with the high-speed serial communication interface 1, and the other end of the serial communication module is electrically connected with a serial port of an upper computer;
the display operation module comprises a microcontroller 2, an LED indicator lamp, an LCD display, a high-speed serial communication interface 4, a switching-on button and a switching-off button, the LED indicator lamp, the LCD display, the high-speed serial communication interface 4, the switching-on button and the switching-off button are all electrically connected with the microcontroller 2, and the high-speed serial communication interface 4 is electrically connected with the high-speed serial communication interface 1;
the industrial Ethernet communication module comprises a microprocessor 3, a high-speed serial communication interface 2 and RJ45 interfaces, wherein the high-speed serial communication interface 2 and the RJ45 interfaces are electrically connected with the microprocessor 3, and the high-speed serial communication interface 2 is electrically connected with the high-speed serial communication interface 1.
Preferably, the switching value input module includes an inverter 1, an inverter 2 and a nonpolar sampling photoelectric coupler, the inverter 1, the inverter 2 and the nonpolar sampling photoelectric coupler are electrically connected in sequence, the inverter 1 is electrically connected with the microprocessor 1, and the nonpolar sampling photoelectric coupler is electrically connected with the motor main loop.
Preferably, the relay output module includes at least one path of phase inverter 3, phase inverter 4 and general power relay 1, at least one path of phase inverter 5, phase inverter 6 and general power relay 2, phase inverter 3, phase inverter 4 and general power relay 1 are connected electrically in proper order, phase inverter 5, phase inverter 6 and general power relay 2 are connected electrically in proper order, phase inverter 3 and phase inverter 5 are all connected with microprocessor 1 electrically, general power relay 1 and general power relay 2 are all connected with the motor main loop electrically.
Preferably, the serial communication module comprises a DB9 interface and a high-speed serial communication interface 3, the DB9 interface is used for being electrically connected with a serial port of an upper computer, and the high-speed serial communication interface 3 is electrically connected with the high-speed serial communication interface 1.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the utility model.
The positive progress effects of the utility model are as follows:
the utility model can be conveniently connected into a control loop of the low-voltage three-phase alternating current motor for use, and provides intelligent protection control for the motor.
Drawings
FIG. 1 is a schematic diagram of the motor protection and fault diagnosis controller of the present invention;
FIG. 2 is a block diagram of the connection between the main control module and the industrial Ethernet communication module according to the present invention;
FIG. 3 is a block diagram of the connection between the main control module and the switching value input module according to the present invention;
FIG. 4 is a block diagram of the connection between the main control module and the relay output module according to the present invention;
fig. 5 is a block diagram of the connection between the main control module and the serial communication module, the display operation module and the industrial ethernet communication module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 5, the present embodiment provides a motor protection control device, which includes a main control module 1, a three-phase measurement type current transformer 2, a three-phase protection type current transformer 3, a three-phase measurement type voltage transformer 4, a switching value input module 5, a relay output module 6, a serial communication module 7, a display operation module 8, and an industrial ethernet communication module 9.
The main control module 1 comprises a microcontroller 1 and a high-speed serial communication interface 1, the microcontroller 1 is electrically connected with the high-speed serial communication interface 1, the primary sides of a three-phase measurement type current transformer 2, a three-phase protection type current transformer 3 and a three-phase measurement type voltage transformer 4 are electrically connected with a main loop of an electric motor, the secondary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are electrically connected with the microprocessor 1, one ends of a switching value input module 5 and a relay output module 6 are electrically connected with the microcontroller 1, the other ends of the switching value input module and the relay output module are electrically connected with the main loop of the electric motor, one end of a serial communication module 7 is electrically connected with the high-speed serial communication interface 1, and the other end of the serial communication module is electrically connected with a serial port of an upper computer.
The display operation module 8 comprises a microcontroller 2, an LED indicator lamp, an LCD display, a high-speed serial communication interface 4, a closing button and an opening button, the LED indicator lamp, the LCD display, the high-speed serial communication interface 4, the closing button and the opening button are all electrically connected with the microcontroller 2, and the high-speed serial communication interface 4 is electrically connected with the high-speed serial communication interface 1.
The industrial Ethernet communication module 9 comprises a microprocessor 3, a high-speed serial communication interface 2 and RJ45 interfaces, wherein the high-speed serial communication interface 2 and the RJ45 interfaces are both electrically connected with the microprocessor 3, and the high-speed serial communication interface 2 is electrically connected with the high-speed serial communication interface 1.
The switching value input module 5 comprises an inverter 1, an inverter 2 and a nonpolar sampling photoelectric coupler, the inverter 1, the inverter 2 and the nonpolar sampling photoelectric coupler are sequentially and electrically connected, the inverter 1 is electrically connected with the microprocessor 1, and the nonpolar sampling photoelectric coupler is electrically connected with a motor main loop.
The serial communication module 7 comprises a DB9 interface and a high-speed serial communication interface 3, wherein the DB9 interface is used for being electrically connected with a serial port of an upper computer, and the high-speed serial communication interface 3 is electrically connected with the high-speed serial communication interface 1.
The switching-on button of the display operation module 8 is pressed, the microprocessor 2 of the display operation module sends a switching-on command to the microprocessor 1 of the main control module 1 through the serial communication interface 4, after the microprocessor 1 receives the switching-on command through the serial communication interface 1, the microprocessor 1 pulls up a switching-on action IO pin connected with the relay output module, the high level is still kept after the phase inverter 3 and the phase inverter 4, a coil of the universal power relay 1 is electrified, a relay contact is closed, a motor main loop is electrified, and the motor is started and normally runs.
The microprocessor 1 collects current data of a secondary side loop of the three-phase measurement type current transformer 2, current data of a secondary side loop of the three-phase protection type current transformer 3, and voltage data of a secondary side loop of the three-phase measurement type voltage transformer 4, acquires electric quantity data based on the current data of the three-phase measurement type current transformer 2 and the voltage data of the three-phase measurement type voltage transformer 4, and realizes protection control of the motor based on the current data of the secondary side loop of the three-phase protection type current transformer 3, such as: when the current data is within a first set range value, the motor is basically in a normal running state; when the current data is within a second set range value, indicating that the motor has a fault, transmitting a fault signal to the microprocessor 2 through the high-speed serial communication interface 1 and the high-speed serial communication interface 4, and prompting the fault behavior by the microprocessor 2 through an LED indicator lamp and an LCD display; when the current data is within a third set range value, the motor is indicated to be shut down seriously when a fault occurs, at the moment, a tripping shutdown signal is transmitted to the microprocessor 2 through the high-speed serial communication interface 1 and the high-speed serial communication interface 4, the microprocessor 2 prompts a tripping shutdown action through an LED indicating lamp and an LCD display, the microcontroller 1 pulls down a brake separating action IO pin connected with the relay output module 6, the low level is still kept after passing through the phase inverter 5 and the phase inverter 6, the coil of the general power relay 2 loses power, the relay contact is disconnected, the main loop of the motor loses power, and the motor enters a shutdown state.
The switching value input module 5 collects operation feedback signals of a contactor auxiliary contact of the motor to confirm whether the motor is in an operation state or a stop state, when the contactor is closed (the motor operates), the contactor auxiliary contact is closed, a signal at the output end of the non-polar sampling photoelectric coupler is pulled down (a 0 level signal), the signal is kept at a low level after passing through the phase inverter 2 and the phase inverter 1 and is input into a sampling pin of the microprocessor 1 of the main control module, and at the moment, the microprocessor 1 confirms that the motor is in the operation state; otherwise, the sampling pin of the microprocessor 1 receives a high level signal (1 level signal), and the microprocessor 1 confirms that the motor is in a stop state.
The microprocessor 3 of the industrial Ethernet communication module 9 communicates with the automatic control center through a primary main station with industrial Ethernet, when receiving a periodic cycle instruction, the instruction is analyzed and then transmitted to the microprocessor 1 to read the state and electric quantity parameters of the motor, and the motor is remotely controlled to be switched on and switched off to be stopped.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (4)
1. A motor protection control device is characterized by comprising a main control module, a three-phase measurement type current transformer, a three-phase protection type current transformer, a three-phase measurement type voltage transformer, a switching value input module, a relay output module, a serial communication module, a display operation module and an industrial Ethernet communication module;
the main control module comprises a microcontroller 1 and a high-speed serial communication interface 1, the microcontroller 1 is electrically connected with the high-speed serial communication interface 1, the primary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are electrically connected with a main loop of the motor, the secondary sides of the three-phase measurement type current transformer, the three-phase protection type current transformer and the three-phase measurement type voltage transformer are electrically connected with the microprocessor 1, one end of the switching value input module and one end of the relay output module are electrically connected with the microcontroller 1, the other end of the switching value input module and the other end of the relay output module are electrically connected with the main loop of the motor, one end of the serial communication module is electrically connected with the high-speed serial communication interface 1, and the other end of the serial communication module is electrically connected with a serial port of an upper computer;
the display operation module comprises a microcontroller 2, an LED indicator lamp, an LCD display, a high-speed serial communication interface 4, a closing button and an opening button, the LED indicator lamp, the LCD display, the high-speed serial communication interface 4, the closing button and the opening button are all electrically connected with the microcontroller 2, and the high-speed serial communication interface 4 is electrically connected with the high-speed serial communication interface 1;
the industrial Ethernet communication module comprises a microprocessor 3, a high-speed serial communication interface 2 and RJ45 interfaces, wherein the high-speed serial communication interface 2 and the RJ45 interfaces are electrically connected with the microprocessor 3, and the high-speed serial communication interface 2 is electrically connected with the high-speed serial communication interface 1.
2. The motor protection control device according to claim 1, wherein the switching value input module includes an inverter 1, an inverter 2, and a non-polarity sampling photocoupler, the inverter 1, the inverter 2, and the non-polarity sampling photocoupler are electrically connected in sequence, the inverter 1 is electrically connected to the microprocessor 1, and the non-polarity sampling photocoupler is electrically connected to the motor main loop.
3. The motor protection control device according to claim 1, wherein the relay output module comprises at least one path of inverter 3, inverter 4 and general power relay 1, at least one path of inverter 5, inverter 6 and general power relay 2, the inverter 3, inverter 4 and general power relay 1 are electrically connected in sequence, the inverter 5, inverter 6 and general power relay 2 are electrically connected in sequence, the inverter 3 and inverter 5 are both electrically connected with the microprocessor 1, and the general power relay 1 and general power relay 2 are both electrically connected with the motor main loop.
4. The motor protection control device according to claim 1, wherein the serial communication module comprises a DB9 interface and a high-speed serial communication interface 3, the DB9 interface is used for electrically connecting with a serial port of an upper computer, and the high-speed serial communication interface 3 is electrically connected with the high-speed serial communication interface 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477104.1U CN216904273U (en) | 2022-03-07 | 2022-03-07 | Motor protection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477104.1U CN216904273U (en) | 2022-03-07 | 2022-03-07 | Motor protection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904273U true CN216904273U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220477104.1U Active CN216904273U (en) | 2022-03-07 | 2022-03-07 | Motor protection control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904273U (en) |
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2022
- 2022-03-07 CN CN202220477104.1U patent/CN216904273U/en active Active
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