CN117318534A - Automatic switching logic action method and system for electric motor - Google Patents

Automatic switching logic action method and system for electric motor Download PDF

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Publication number
CN117318534A
CN117318534A CN202311120227.5A CN202311120227A CN117318534A CN 117318534 A CN117318534 A CN 117318534A CN 202311120227 A CN202311120227 A CN 202311120227A CN 117318534 A CN117318534 A CN 117318534A
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CN
China
Prior art keywords
motor
switching logic
automatic
circuit breaker
initial state
Prior art date
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Pending
Application number
CN202311120227.5A
Other languages
Chinese (zh)
Inventor
李华
魏鹏冲
李岩峰
朱忠亭
张昱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
Original Assignee
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd filed Critical China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
Priority to CN202311120227.5A priority Critical patent/CN117318534A/en
Publication of CN117318534A publication Critical patent/CN117318534A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details
    • H02P1/022—Security devices, e.g. correct phase sequencing
    • H02P1/024—Protection against simultaneous starting by two starting devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/008—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result preventing unsafe switching operations in substations (Schaltfehlerschutz)
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/066—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems characterised by the use of dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details
    • H02P1/022—Security devices, e.g. correct phase sequencing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/54—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors

Abstract

The invention provides a method and a system for the automatic switching logic action of a motor, wherein the method comprises the following steps: acquiring an initial state of the automatic switching logic of the motor and a current state of the motor; judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor; if yes, acquiring the input condition of the spare power automatic switching logic of the motor; and executing the automatic switching logic action of the electric motor according to the initial state and the input condition. The invention can avoid starting the standby motor by mistake, does not need a worker to judge whether to start the standby automatic switching logic, and can adapt to the operation modes of various standby motors.

Description

Automatic switching logic action method and system for electric motor
Technical Field
The invention relates to the technical field of automatic switching logic of a motor, in particular to an automatic switching logic action method of the motor and an automatic switching logic action system of the motor.
Background
In a nuclear power plant, motors are provided with redundant standby configurations such as one-standby, two-standby, one-standby, two-standby and the like, and in order to ensure safe operation of a unit and output required power to a power grid, the standby motors can be put into operation when the operation motor accidentally trips. In order to ensure that the standby motor is rapidly and effectively put into operation, a standby pump is generally and automatically put into operation in an electric field DCS (Distributed Control System ) system, and normally, a brake-separating position feedback signal of a motor power circuit breaker is used as a condition for starting the standby motor, and once the motor is accidentally brake-separated for various reasons, a standby automatic switching logic can automatically send a command to switch on the power circuit breaker of the standby motor.
However, in the related art, the initial state of the backup power automatic switching logic cannot be determined by taking only the opening position of the motor power circuit breaker, and there are the following disadvantages:
firstly, for a motor in a shutdown state, a switching-off position is a condition which exists all the time, and a switching-on instruction of the motor can be triggered by mistake under the condition that other conditions are met;
in the related art, a selection switch for switching on the spare power automatic switching of the motor is usually added on a DCS operator station, but the selection switch can only perform selection operation after the motor is switched on, otherwise, spare power automatic switching logic can be started by mistake, the operation is complex, and the operation flow of operators is limited.
Thirdly, the closing and opening position signals of the motor power circuit breaker are taken from an electric switch cabinet, when the electric circuit of the motor is in a maintenance and debugging stage due to the problem, the trolley of the electric switch cabinet is pulled out to a test position, the main circuit is disconnected, the secondary circuit is communicated, and the false closing and opening position is uploaded to the DCS, so that the spare power automatic switching logic is disordered;
the circuit breaker of the electrical switch cabinet is provided with an anti-tripping circuit so as to prevent the contact of a remote switching-on instruction from being stuck, and the circuit breaker is switched on to the fault to be tripped by a protection action and is switched on by mistake, so that the switching-on instruction received by the electrical switch cabinet is a short pulse signal, but the switching-off position of the circuit breaker under the spare automatic switching starting condition is a long signal, and if the circuit breaker is not processed, the switching-on instruction is frequently sent.
Disclosure of Invention
The invention provides a method and a system for operating the backup automatic switching logic of a motor, which can avoid the false start of the backup motor, and can adapt to the operation modes of various backup motors without the need of a worker to judge whether to start the backup automatic switching logic.
The technical scheme adopted by the invention is as follows:
a method for logically operating the spare power automatic switching of a motor comprises the following steps: acquiring an initial state of the automatic switching logic of the motor and a current state of the motor; judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor; if yes, acquiring the input condition of the spare power automatic switching logic of the motor; and executing the automatic switching logic action of the electric motor according to the initial state and the input condition.
In one embodiment of the present invention, the initial state of the automatic backup power switching logic of the motor includes: the power circuit breaker trolley of the motor is put into working position; the power circuit breaker is in a closing state.
In one embodiment of the present invention, the input condition is that the power circuit breaker accidentally trips, including: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
In one embodiment of the invention, the power circuit breaker is in the initial state before the power circuit breaker is accidentally tripped.
In one embodiment of the invention, when the automatic spare power switching on and off condition of the power circuit breaker is met, the automatic spare power switching logic action outlet is executed, and the initial state is reset at the same time.
A backup power automatic switching logic action system of a motor comprises: the first acquisition device is used for acquiring the initial state of the backup power automatic switching logic of the motor and the current state of the motor; the judging device is used for judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor; the second acquisition device is used for acquiring the input conditions of the backup power automatic switching logic of the motor; and the executing device is used for executing the automatic switching action of the electric motor according to the initial state and the input condition.
In one embodiment of the present invention, the initial state of the automatic backup power switching logic of the motor includes: the power circuit breaker trolley of the motor is put into working position; the power circuit breaker is in a closing state.
In one embodiment of the present invention, the input condition is that the power circuit breaker accidentally trips, including: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
In one embodiment of the invention, the power circuit breaker is in the initial state before the power circuit breaker is accidentally tripped.
In one embodiment of the invention, when the automatic spare power switching-on condition of the power circuit breaker is met, the executing device executes the automatic spare power switching-on logic action outlet and returns to the initial state in a delayed manner.
The invention has the beneficial effects that:
according to the invention, the initial state of the automatic backup power switching logic of the motor and the current state of the motor are obtained, whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor is judged, if so, the input condition of the automatic backup power switching logic of the motor is obtained, and the automatic backup power switching logic of the motor is executed according to the initial state and the input condition of the motor, so that the false start of the backup motor can be avoided, and a worker is not required to judge whether to start the automatic backup power switching logic or not, so that the running modes of various backup motors can be self-adapted.
Drawings
FIG. 1 is a flow chart of a method for automatic switching logic operation of a motor according to an embodiment of the present invention;
FIG. 2 is a block diagram of general motor backup power automatic switching logic according to one embodiment of the present invention;
FIG. 3 is a block diagram of a motor backup power automatic switching logic according to one embodiment of the present invention;
fig. 4 is a schematic block diagram of a logic action system of the spare power automatic switching device of the motor according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flowchart of a method for operating a backup power automatic switching logic of a motor according to an embodiment of the present invention.
As shown in fig. 1, the method for logically operating the spare power automatic switching device of the motor according to the embodiment of the invention comprises the following steps:
s1, acquiring an initial state of the spare power automatic switching logic of the motor and a current state of the motor.
Specifically, in general motor backup power automatic switching logic, a switching-off position feedback signal of a motor power circuit breaker is taken as a condition for starting a backup motor. It can be understood that in general automatic backup switching logic, only the feedback signal of the opening position of the motor power circuit breaker is taken, but the initial state of the motor cannot be determined, and the automatic backup switching logic is easily triggered by mistake, for example, as shown in fig. 2, three motors A, B, C are adopted, a motor C is a backup motor, during normal operation of a unit, the motor a and the motor B are put into operation, any one of the motor a or the motor B suddenly trips, the automatic backup switching logic automatically triggers the switching-on instruction of the power circuit breaker of the backup motor C after receiving the feedback signal of the opening position of the motor power circuit breaker, and if any one of the motor a or the motor B is in a shutdown state, the automatic backup switching logic also receives the feedback signal of the opening position of the motor power circuit breaker, and at this time, the automatic backup switching logic is triggered by mistake.
In one embodiment of the present invention, the initial state of the automatic on-demand motor logic may include: the power circuit breaker trolley of the motor is in a working position and the power circuit breaker is in a closing state. It can be understood that the automatic backup power switching logic action outlet can be triggered only when the power circuit breaker trolley is put into a working position and the power circuit breaker is in a switching-on state, and the automatic backup power switching logic action outlet can be prevented from being triggered only by adopting the switching-off position of the power circuit breaker, and the switching-off position of the power circuit breaker is a signal which is always existed for stopping the motor, so that false triggering of the automatic backup power switching logic of the motor can be prevented.
S2, judging whether the current state of the motor is the initial state of the spare power automatic switching logic of the motor.
S3, if yes, acquiring the input condition of the spare power automatic switching logic of the motor.
Specifically, if the motor power circuit breaker trolley is located at a working position and the current motor circuit breaker is in a closing state, the motor is in an initial state of the backup power automatic switching logic, and at this time, a switching-on condition of the backup power automatic switching logic of the motor can be obtained, wherein the switching-on condition can be accidental tripping of the power circuit breaker, and the switching-on condition can comprise: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
In one embodiment of the invention, the power circuit breaker is in an initial state prior to an unexpected trip of the power circuit breaker. It can be understood that the initial state of the motor is determined, the automatic backup switching logic of the motor is input, and the automatic backup switching logic can be normally implemented without selection operation, namely, as long as the circuit breaker is in a non-manual control mode, the limitation of an operator on an operation flow and complicated operation can be avoided.
And S4, executing the automatic switching logic action of the electric motor according to the initial state and the input condition.
In one embodiment of the invention, when the automatic switching on and off condition of the power circuit breaker is met, the automatic switching on and off logic action outlet is executed, and the initial state is reset in a delayed mode.
In a specific embodiment of the present invention, as shown in fig. 3, after the current states of the motors a and B conform to the initial state of the auto-switching logic of the motor and the input condition of the auto-switching logic of the motor, the auto-switching logic of the motor may be executed within t seconds, where a delay of t seconds may be taken, that is, when the power circuit breaker trolley of the motor a or B is in the on position and the circuit breaker is in the on position, logic 1 is output without delay, when the power circuit breaker of the motor a or B is off, after the switch-on position signal of the power circuit breaker disappears, a logic 0 may be output with a delay of t seconds, and the power circuit breaker of the standby motor C sends a switch-on command, where the delay may not only avoid that the switch-on signal is recovered at the same time when the switch-off signal is acquired, because the switch-on feedback signal and the switch-off feedback signal of the power circuit breaker may not exist simultaneously, and the switch-on command may not be sent out for a short period of time. And after the automatic backup power switching logic acts at the outlet, the switching-on signal of the motor power circuit breaker is automatically reset so as to meet the initial state of the automatic backup power switching logic at the next time.
In one embodiment of the invention, once the initial state of the automatic switching logic of the motor is met, the follow-up logic can be opened after 0 seconds, namely, the motor power circuit breaker is accidentally switched off, and the state is reset after time delay of t seconds, so that the current logic can be executed for a period of time, and the tripping prevention loop of the circuit breaker is not triggered by a long signal instruction, thereby avoiding frequent switching-on instructions.
In summary, according to the method for operating the automatic backup power switching logic of the motor according to the embodiment of the invention, by acquiring the initial state of the automatic backup power switching logic of the motor and the current state of the motor and judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor, if so, the input condition of the automatic backup power switching logic of the motor is acquired, and the automatic backup power switching logic of the motor is executed according to the initial state and the input condition of the motor, thereby, the false start of the backup motor can be avoided, and the judgment of whether to start the automatic backup power switching logic by a worker is unnecessary, so that the operation modes of various backup motors can be self-adapted.
In order to realize the method for the automatic switching logic action of the motor, the invention also provides an automatic switching logic action system of the motor.
As shown in fig. 4, the automatic switching logic action system for a motor according to the embodiment of the present invention includes: the system comprises a first acquisition device 10, a judgment device 20, a second acquisition device 30 and an execution device 40, wherein the first acquisition device 10 is used for acquiring an initial state of a spare power automatic switching logic of a motor and a current state of the motor; the judging device 20 is used for judging whether the current state of the motor is the initial state of the automatic switching logic of the motor; the second obtaining device 30 is used for obtaining the input condition of the automatic switching logic of the electric motor; the execution device 40 is used for executing the automatic switching operation of the motor according to the initial state and the input condition.
Specifically, in general spare power automatic switching logic, a switching-off position feedback signal of a motor power circuit breaker is taken as a condition for starting a spare motor. It can be understood that in general automatic backup switching logic, only the feedback signal of the opening position of the motor power circuit breaker is taken, but the initial state of the motor is not determined, so that the automatic backup switching logic is easily triggered by mistake, for example, as shown in fig. 2, three motors A, B, C are adopted, the motor C is a backup motor, during normal operation of the unit, the motor a and the motor B are put into operation, any one of the motor a or the motor B trips suddenly, the automatic backup switching logic automatically triggers the switching-on instruction of the power circuit breaker of the backup motor C after receiving the feedback signal of the opening position of the motor power circuit breaker, and if any one of the motor a or the motor B is in the off state, the automatic backup switching logic also receives the feedback signal of the opening position of the motor power circuit breaker, and at this time, the automatic backup switching logic is triggered by mistake.
In one embodiment of the present invention, the initial state of the automatic on-demand motor logic may include: the power circuit breaker trolley of the motor is in a working position and the power circuit breaker is in a closing state. It can be understood that the automatic backup power switching logic action outlet can be triggered only when the power circuit breaker trolley is put into a working position and the power circuit breaker is in a switching-on state, and the automatic backup power switching logic action outlet can be prevented from being triggered only by adopting the switching-off position of the power circuit breaker, and the switching-off position of the power circuit breaker is a signal which is always existed for stopping the motor, so that false triggering of the automatic backup power switching logic of the motor can be prevented.
In one embodiment of the present invention, if the motor power breaker trolley is located at the working position and the current motor breaker is in the on state, the judging device 20 may judge that the motor is in the initial state of the backup power switching logic, at this time, a switching condition of the backup power switching logic of the motor may be obtained, where the switching condition may be an unexpected trip of the power breaker, and may include: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
In one embodiment of the invention, the power circuit breaker is in an initial state prior to an unexpected trip of the power circuit breaker. It can be understood that the first acquiring device 10 determines the initial state of the motor, inputs the automatic backup power switching logic of the motor, and can normally implement the automatic backup power switching logic as long as the circuit breaker is in a non-manual control mode, thereby avoiding the limitation of the operation flow and the tedious operation of the operator.
In one embodiment of the present invention, when the on-demand condition of the power circuit breaker for switching off is satisfied, the execution device 40 executes the logic action exit of the on-demand switch while delaying the return to the initial state.
In a specific embodiment of the present invention, as shown in fig. 3, the current states of the motors a and B may be acquired by the first acquiring device 10, when the current states of the motors a and B conform to the initial state of the automatic switching logic of the motor backup power, and after the second acquiring device 30 acquires the input condition of the automatic switching logic of the motor backup power, the automatic switching logic of the motor backup power may be executed within t seconds by the executing device 40, where a delay of t seconds is available, that is, when the power circuit breaker trolley of the motor a or B is in the working position and the circuit breaker is in the switching position, the executing device 40 outputs a logic 1 without delay, when the power circuit breaker of the motor a or B is in the switching position, and after the switching position signal of the power circuit breaker is disappeared, the executing device 40 outputs a logic 0 with a delay of t seconds, and the power circuit breaker of the backup motor C sends a switching instruction, where the delay not only can avoid that the switching signal is acquired, but also returns to the switching feedback signal of the power circuit breaker, because the switching feedback signal of the automatic switching logic is not available, and the switching logic is stored for a short period of time. And after the automatic backup power switching logic acts at the outlet, the switching-on signal of the motor power circuit breaker is automatically reset so as to meet the initial state of the automatic backup power switching logic at the next time.
In summary, according to the automatic backup power switching logic operating system for a motor according to the embodiment of the present invention, the initial state of the automatic backup power switching logic for a motor and the current state of the motor are obtained by the first obtaining device, and whether the current state of the motor is the initial state of the automatic backup power switching logic for a motor is judged by the judging device, if yes, the second obtaining device obtains the input condition of the automatic backup power switching logic for a motor, and the executing device executes the automatic backup power switching logic for a motor according to the initial state and the input condition of the motor, so that the automatic backup power switching logic for a motor can be prevented from being started by mistake, and whether to start the automatic backup power switching logic or not is judged by a worker is not needed, so that the operating modes of various automatic backup motors can be adapted.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. A method for logically operating the spare power automatic switching of a motor is characterized by comprising the following steps:
acquiring an initial state of the automatic switching logic of the motor and a current state of the motor;
judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor;
if yes, acquiring the input condition of the spare power automatic switching logic of the motor;
and executing the automatic switching logic action of the electric motor according to the initial state and the input condition.
2. The method for operating the automatic backup power switching logic of the motor according to claim 1, wherein the initial state of the automatic backup power switching logic of the motor comprises:
the power circuit breaker trolley of the motor is put into working position;
the power circuit breaker is in a closing state.
3. The method for logically operating the spare power automatic switching device of the motor according to claim 2, wherein the switching condition is that the power circuit breaker accidentally trips,
wherein, include: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
4. A method of automatic on-demand motor switching logic as set forth in claim 3, wherein said power circuit breaker is in said initial state prior to said power circuit breaker accidentally tripping.
5. The method for automatic backup power switching logic operation of a motor according to claim 4, wherein when the automatic backup power switching condition of the power circuit breaker is satisfied, an automatic backup power switching logic operation outlet is executed while the initial state is returned by a delay.
6. A backup power automatic switching logic action system of a motor is characterized by comprising:
the first acquisition device is used for acquiring the initial state of the backup power automatic switching logic of the motor and the current state of the motor;
the judging device is used for judging whether the current state of the motor is the initial state of the automatic backup power switching logic of the motor;
the second acquisition device is used for acquiring the input conditions of the backup power automatic switching logic of the motor;
and the executing device is used for executing the automatic switching action of the electric motor according to the initial state and the input condition.
7. The system of claim 6, wherein the initial state of the auto-switching logic comprises:
the power circuit breaker trolley of the motor is put into working position;
the power circuit breaker is in a closing state.
8. The automatic switching logic action system of the electric motor according to claim 7, wherein the switching condition is that the power circuit breaker accidentally trips,
wherein, include: thermal control process system tripping and tripping caused by motor power supply electrical faults and circuit breaker trip.
9. The automatic on-demand motor switching logic action system of claim 8, wherein the power circuit breaker is in the initial state before the power circuit breaker is accidentally tripped.
10. The automatic backup power switching logic action system of a motor according to claim 9, wherein when the automatic backup power switching condition of the power circuit breaker is satisfied, the executing device executes the automatic backup power switching logic action outlet while delaying the return to the initial state.
CN202311120227.5A 2023-08-31 2023-08-31 Automatic switching logic action method and system for electric motor Pending CN117318534A (en)

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