CN105891714A - Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof - Google Patents

Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof Download PDF

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Publication number
CN105891714A
CN105891714A CN201610245867.2A CN201610245867A CN105891714A CN 105891714 A CN105891714 A CN 105891714A CN 201610245867 A CN201610245867 A CN 201610245867A CN 105891714 A CN105891714 A CN 105891714A
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Prior art keywords
motor
phase
setting value
judged
fault
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卞万良
丁爱光
许哲昭
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Weifang Fulairui Electronic Technology Co Ltd
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Weifang Fulairui Electronic Technology Co Ltd
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Priority to CN201610245867.2A priority Critical patent/CN105891714A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34Testing dynamo-electric machines
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

The invention discloses a motor-driven system energy monitoring and fault diagnosis apparatus and an implementation method thereof. The motor-driven system energy monitoring and fault diagnosis apparatus includes a motor voltage current signal acquisition processing system module, a motor control system module, a device state diagnosis system module, an energy monitoring system module, a communication processing system module, an execution unit module, a display apparatus module and a host computer system module. The motor-driven system energy monitoring and fault diagnosis apparatus and the implementation method thereof have the advantages of being integrated with energy efficiency monitoring and device fault automatic diagnosis, being able to perform fault prediction on the motor, and being able to perform fault prediction on the driven mechanical equipment so as to achieve the aim for state maintenance.

Description

A kind of motor driven systems energy monitor and trouble-shooter and implementation method
Technical field
The present invention relates to a kind of motor driven systems energy monitor and trouble-shooter and implementation method, belong to electronics prison Control diagnostic techniques field.
Background technology
Motor driven systems is commonly used in the every field of national product, consumes substantial amounts of electric energy, motor and driving Plant equipment non-optimal conditions run not only endanger production safety, be also unfavorable for saving energy and reduce the cost.Existing enterprise controls system System or information system only arrange the high-low limits of the various parameter of motor, and the employing of minority measuring point arranges classifying alarm mode and carries out event Barrier is reported to the police, and these alarm limits have a bigger marginal space, and in motor and the monitoring that drives unit exception point and failure cause The aspect existing defects such as analysis, it is impossible to effectively carry out equipment state assessment.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned deficiency, it is provided that a kind of motor driven systems energy monitor and event Barrier diagnostic device and implementation method, have energy efficiency monitoring and equipment fault diagnoses in the advantage of one automatically, can not only be right Motor carries out fault precognition, and driven plant equipment is carried out fault precognition, it is possible to effectively carry out equipment state assessment, Reach the purpose of repair based on condition of component.
For solve problem above, the present invention by the following technical solutions:
A kind of motor driven systems energy monitor and trouble-shooter, described device includes at electric moter voltage current signal collection Reason system module, electric machine control system module, equipment state diagnostic system module, energy source monitoring system module, Communication processing system System module, performance element module, display device module and master system module.
Further, the implementation method of described device comprises the following steps:
Step S101, electric machine control system module starts, and obtains the voltage of motor device, current parameters information, completes laggard Enter step S102 and step S111;
Step S102, it is judged that whether A phase current virtual value Ia is equal to 0, if A is phase current virtual value Ia=0, then A phase is broken phase, and It is shown in display device module, if A phase current virtual value Ia is not equal to 0, then enters step S103;
Step S103, it is judged that whether B phase current virtual value Ib is equal to 0, if B is phase current virtual value Ib=0, then B phase is broken phase, and It is shown in display device module, if B phase current virtual value Ib is not equal to 0, then enters step S104;
Step S104, it is judged that whether C phase current virtual value Ic is equal to 0, if C is phase current virtual value Ic=0, then C phase is broken phase, and It is shown in display device module, if C phase current virtual value Ic is not equal to 0, then enters step S105.
Further, the implementation method of described device is further comprising the steps of:
Step S105, it is judged that motor three-phase current is the most all in three-phase shortcircuit setting range, if in the range of, then motor three Short circuit, and is shown in display device module mutually, if not in the range of, then enter step S106;
Step S106, it is judged that motor three-phase current is the most all in motor rotation blockage setting range, if in the range of, then motor blocks up Turn, and be shown in display device module, if not in the range of, then enter step S107;
Step S107, it is judged that motor three-phase current is the most all in overload setting range, if in the range of, then motor overload, Perform step S108, if not in the range of, then enter step S108.
Further, the implementation method of described device is further comprising the steps of:
Step S108, it is judged that whether motor three-phase voltage exceedes overvoltage sets, sets if exceeding overvoltage, then motor over-voltage, Performing step S110, if setting not above overvoltage, then entering step S109;
Step S109, it is judged that whether motor three-phase voltage is less than under-voltage setting, if being less than under-voltage setting, then motor is under-voltage, holds Row step S110, if being not less than under-voltage setting, then enters step S110;
Step S110, it is judged that whether three-phase voltage balances, if three-phase voltage balance, then transfers signals to electric moter voltage electric current In signal acquiring processing system module, if imbalance of three-phase voltage, then transfer signals to equipment state diagnostic system module In.
Further, the implementation method of described device is further comprising the steps of:
Step S111, carries out Fourier analysis to electric current, voltage signal, enters step S112 after completing;
Step S112, the data after process are transferred to energy source monitoring system module, enter step S113 after completing;
Step S113, it is judged that whether the pole of line frequency exceedes setting value by frequency DB difference, if exceeding setting value, then motor turns Sub-bar fault, and fault message is shown in display device module, if being not above setting value, then enter step S114;
Step S114, it is judged that whether the rotating speed side frequency value of line frequency exceedes setting value, if exceeding setting value, then motor generation is the most right Middle fault, and fault message is shown in display device module, if being not above setting value, then enter step S115.
Further, the implementation method of described device is further comprising the steps of:
Step S115, it is judged that whether speed-frequency value exceedes setting value, if exceeding setting value, then motor generation fault of eccentricity, And fault message is shown in display device module, if being not above setting value, then enter step S116.
Step S116, it is judged that whether bearing fault frequency values exceedes setting value, if exceeding setting value, then motor bearings event Barrier, and fault message is shown in display device module, if being not above setting value, then enter step S117.
Further, the implementation method of described device is further comprising the steps of:
Step S117, it is judged that whether gearbox fault frequency values exceedes setting value, if exceeding setting value, then motor gearbox event Barrier, and fault message is shown in display device module, if being not above setting value, then enter step S118;
Step S118, it is judged that whether belt failure frequency values exceedes setting value, if exceeding setting value, then motor belt fault, And fault message is shown in display device module, if being not above setting value, then enter step S119;
Step S119, it is judged that whether blade fault frequency values exceedes setting value, if exceeding setting value, then motor blade fault, And fault message is shown in display device module.
Further, the implementation method of described device is further comprising the steps of:
Step S201, electric moter voltage current signal acquisition processing system module starts, and enters step S202 after completing;
Step S202, it is judged that whether the three-phase current of motor balances, if the three-phase balance of motor, then outputs signals to display In apparatus module, if the three of motor circuit imbalances, then carry out step S203;
Step S203, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three-phase current Relation judge earth fault phase, and output signals in display device module, if zero-sequence current is not more than setting value, then carry out Step S204;
Step S204, judges it is turn-to-turn short circuit or phase fault by the relation between three-phase current, and failure judgement phase, output Signal is in display device module.
Further, the implementation method of described device is further comprising the steps of:
Step S301, equipment state diagnostic system module starts, and enters step S302 after completing;
Step S302, calculates three phase of impedance, enters step S303 after completing;
Step S303, it is judged that whether three phase of impedance balance, if three-phase impedance balance, then outputs signals in display device module, If three-phase impedance unbalance, then carry out step S304;
Step S304, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three phase of impedance Relation judge earth fault phase, and output signals in display device module, if zero-sequence current is not more than setting value, then carry out Step S305;
Step S305, judges it is turn-to-turn short circuit or phase fault by the relation between three phase of impedance, and failure judgement phase, output Signal is in display device module.
Further, the implementation method of described device is further comprising the steps of:
Step S401, display device module starts, and enters step S402 after completing;
Step S402, records current diagnostic result, enters step S403 after completing;
Step S403, it may be judged whether all data are all analyzed and are over, if data have not been analyzed, then outputs signals to motor control System module, if data analysis is over, then carries out step S404;
Step S404, shows diagnostic result, enters step S405 after completing;
Step S405, selects tripping operation or reports to the police, and enters step S406 after completing;
Step S406, EP (end of program).
The present invention uses above technical scheme, with prior art ratio, has the advantage that
There is energy efficiency monitoring and equipment fault diagnose automatically in the advantage of one, motor can not only be carried out fault precognition, And driven plant equipment is carried out fault precognition simultaneously, it is possible to effectively state is estimated, reaches repair based on condition of component Purpose.
Substantially reduce the number the consumption of electric energy simultaneously so that the plant equipment of motor and driving operate in optimum state, greatly Decrease greatly the harm to production safety, improve production efficiency, be conducive to energy-saving and cost-reducing.
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Accompanying drawing 1 is that in this clearly demarcated embodiment, the structure of motor driven systems energy monitor and each module of trouble-shooter is shown Figure;
Accompanying drawing 2 to accompanying drawing 5 is motor driven systems energy monitor and the flow chart of trouble-shooter implementation method.
Detailed description of the invention
Embodiment, as it is shown in figure 1, a kind of motor driven systems energy monitor and trouble-shooter, including electric moter voltage Current signal acquisition processing system module 2, electric machine control system module 1, equipment state diagnostic system module 3, energy monitor system System module 4, Communication processing system module 6, performance element module 7, display device module 5 and master system module 8.
Described electric moter voltage current signal acquisition processing system module 2 is for from electric machine control system module 1 or information system System obtains the voltage of motor, current information, the output of electric moter voltage current signal acquisition processing system module 2 and equipment shape The signal input part of state diagnostic system module 3 connects, the electric moter voltage current signal acquisition processing system module 2 voltage to gathering Current signal carries out Fourier decomposition, chooses fault characteristic frequency and voltage x current amplitude for equipment state diagnostic system module 3。
Described equipment state diagnostic system module 3 utilizes electric moter voltage current signal to carry out motor driven systems, to motor And load equipment diagnoses, the signal output part of equipment state diagnostic system module 3 and the signal of Communication processing system module 6 Input connects.
Described Communication processing system module 6 signal output part respectively with performance element module 7, display device module 5 and on The signal input part of position machine system module 8 connects.
Described energy source monitoring system module 4 manages for motor power, and energy source monitoring system module 4 signal output part is with logical The signal input part of news processing system modules 6 connects.
Described display device module 5 in order to show diagnostic result information, the signal input part of display device module 5 and communication The signal output part of processing system modules 6 connects.
Described master system module 8 is in order to store data file and display diagnostic result and motor cluster management, upper Machine system module 8 is connected with the signal output part of Communication processing system module 6.
Such as Fig. 2, such as 3, shown in Fig. 4 and Fig. 5, described machine drive system energy monitor and the implementation method of trouble-shooter As follows:
Step S101, electric machine control system module 1 starts, and obtains the voltage of motor device, current parameters information, completes laggard Enter step S102 and step S111;
Step S102, it is judged that whether A phase current virtual value Ia is equal to 0, if A is phase current virtual value Ia=0, then A phase is broken phase, and It is shown in display device module 5, if A phase current virtual value Ia is not equal to 0, then enters step S103;
Step S103, it is judged that whether B phase current virtual value Ib is equal to 0, if B is phase current virtual value Ib=0, then B phase is broken phase, and It is shown in display device module 5, if B phase current virtual value Ib is not equal to 0, then enters step S104;
Step S104, it is judged that whether C phase current virtual value Ic is equal to 0, if C is phase current virtual value Ic=0, then C phase is broken phase, and It is shown in display device module 5, if C phase current virtual value Ic is not equal to 0, then enters step S105;
Step S105, it is judged that motor three-phase current is the most all in three-phase shortcircuit setting range, if in the range of, then motor three Short circuit, and is shown in display device module 5 mutually, if not in the range of, then enter step S106;
Step S106, it is judged that motor three-phase current is the most all in motor rotation blockage setting range, if in the range of, then motor blocks up Turn, and be shown in display device module 5, if not in the range of, then enter step S107;
Step S107, it is judged that motor three-phase current is the most all in overload setting range, if in the range of, then motor overload, Perform step S108, if not in the range of, then enter step S108;
Step S108, it is judged that whether motor three-phase voltage exceedes overvoltage sets, sets if exceeding overvoltage, then motor over-voltage, Performing step S110, if setting not above overvoltage, then entering step S109;
Step S109, it is judged that whether motor three-phase voltage is less than under-voltage setting, if being less than under-voltage setting, then motor is under-voltage, holds Row step S110, if being not less than under-voltage setting, then enters step S110;
Step S110, it is judged that whether three-phase voltage balances, if three-phase voltage balance, then transfers signals to electric moter voltage electric current In signal acquiring processing system module 2, if imbalance of three-phase voltage, then transfer signals to equipment state diagnostic system module In 3.
Step S111, carries out Fourier analysis to electric current, voltage signal, enters step S112 after completing;
Step S112, the data after process are transferred to energy source monitoring system module, enter step S113 after completing;
Step S113, it is judged that whether the pole of line frequency exceedes setting value by frequency DB difference, if exceeding setting value, then motor turns Sub-bar fault, and fault message is shown in display device module 5, if being not above setting value, then enter step S114;
Step S114, it is judged that whether the rotating speed side frequency value of line frequency exceedes setting value, if exceeding setting value, then motor generation is the most right Middle fault, and fault message is shown in display device module 5, if being not above setting value, then enter step S115;
Step S115, it is judged that whether speed-frequency value exceedes setting value, if exceeding setting value, then motor generation fault of eccentricity, And fault message is shown in display device module 5, if being not above setting value, then enter step S116;
Step S116, it is judged that whether bearing fault frequency values exceedes setting value, if exceeding setting value, then motor bearings fault, And fault message is shown in display device module 5, if being not above setting value, then enter step S117;
Step S117, it is judged that whether gearbox fault frequency values exceedes setting value, if exceeding setting value, then motor gearbox event Barrier, and fault message is shown in display device module 5, if being not above setting value, then enter step S118;
Step S118, it is judged that whether belt failure frequency values exceedes setting value, if exceeding setting value, then motor belt fault, And fault message is shown in display device module 5, if being not above setting value, then enter step S119;
Step S119, it is judged that whether blade fault frequency values exceedes setting value, if exceeding setting value, then motor blade fault, And fault message is shown in display device module 5.
Described implementation method includes the diagnosis algorithm of motor three-phase current, and the concrete diagnostic method of motor three-phase current is such as Under:
Step S201, electric moter voltage current signal acquisition processing system module 2 starts, and enters step S202 after completing;
Step S202, it is judged that whether the three-phase current of motor balances, if the three-phase balance of motor, then outputs signals to display In apparatus module 5, if the three of motor circuit imbalances, then carry out step S203;
Step S203, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three-phase current Relation judge earth fault phase, and output signals in display device module 5, if zero-sequence current is not more than setting value, then enter Row step S204;
Step S204, judges it is turn-to-turn short circuit or phase fault by the relation between three-phase current, and failure judgement phase, output Signal is in display device module 5.
Described implementation method includes the diagnosis algorithm of motor three phase of impedance, and the diagnosis algorithm of motor three phase of impedance is as follows:
Step S301, equipment state diagnostic system module 3 starts, and enters step S302 after completing;
Step S302, calculates three phase of impedance, enters step S303 after completing;
Step S303, it is judged that whether three phase of impedance balance, if three-phase impedance balance, then outputs signals in display device module 5, If three-phase impedance unbalance, then carry out step S304;
Step S304, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three phase of impedance Relation judge earth fault phase, and output signals in display device module 5, if zero-sequence current is not more than setting value, then enter Row step S305;
Step S305, judges it is turn-to-turn short circuit or phase fault by the relation between three phase of impedance, and failure judgement phase, output Signal is in display device module 5.
Described implementation method includes the analyzing and processing step of diagnostic result, and the analyzing and processing step of diagnostic result is as follows:
Step S401, display device module 5 starts, and enters step S402 after completing;
Step S402, records current diagnostic result, enters step S403 after completing;
Step S403, it may be judged whether all data are all analyzed and are over, if data have not been analyzed, then outputs signals to motor control System module, if data analysis is over, then carries out step S404;
Step S404, shows diagnostic result, enters step S405 after completing;
Step S405, selects tripping operation or reports to the police, and enters step S406 after completing;
Step S406, EP (end of program).
Fault diagnosis arranges program and is mainly used in setting all kinds of threshold values needed for fault diagnosis and motor driven systems parameter Fixed such as the connection of the mode of connection of motor, motor pole number, the specified phase voltage of stator, phase current, bearing designation and motor and load Mode, the number of blade of pump, blower fan etc., bearing designation, the gear no-load voltage ratio etc. of gearbox is configured.
Fault diagnostic program when carrying out breakdown judge, first to disconnected phase, three-phase shortcircuit, stall these than more serious therefore Barrier judges, if it find that this type of fault occurs in motor, the most no longer judges remaining fault (because at these fault shapes It is remaining fault cannot to be judged soundly under condition).Carrying out, turn-to-turn short circuit, phase fault and ground short circuit etc. are asymmetric During fault, in order to avoid asymmetric the caused erroneous judgement of stator voltage, should first the symmetry surely giving voltage be judged.As Really stator voltage almost symmetry, then the correlation that may utilize between the symmetry of stator current and each phase current is come this type of fault Judge.If stator voltage is in asymmetrical state, then it is right to be substantially in normal state according to stator three phase of impedance The feature of title state, first calculates the impedance of each phase, then utilizes the correlation between the symmetry of impedance and each impedance to sentence Disconnected fault type and position.Utilize electric signal analytic approach that the mechanical problem of motor driven systems is diagnosed simultaneously.Diagnosis Sampled data is analyzed one by one by program according to time sequencing, records type, trouble location and the time of origin broken down Etc. information.After data are all analyzed, all failure analysis result are shown by program.
The above is the citing of best mode for carrying out the invention, and it is common that the part addressed the most in detail is this area The common knowledge of technical staff.Protection scope of the present invention is as the criterion with the content of claim, any technology based on the present invention The equivalent transformation enlightened and carry out, also within protection scope of the present invention.

Claims (10)

1. a motor driven systems energy monitor and trouble-shooter, it is characterised in that: described device includes electric moter voltage Current signal acquisition processing system module (2), electric machine control system module (1), equipment state diagnostic system module (3), the energy Monitoring system module (4), Communication processing system module (6), performance element module (7), display device module (5) and host computer system System module (8).
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device comprises the following steps:
Step S101, electric machine control system module (1) starts, and obtains the voltage of motor device, current parameters information, after completing Enter step S102 and step S111;
Step S102, it is judged that whether A phase current virtual value Ia is equal to 0, if A is phase current virtual value Ia=0, then A phase is broken phase, and It is shown in display device module (5), if A phase current virtual value Ia is not equal to 0, then enters step S103;
Step S103, it is judged that whether B phase current virtual value Ib is equal to 0, if B is phase current virtual value Ib=0, then B phase is broken phase, and It is shown in display device module (5), if B phase current virtual value Ib is not equal to 0, then enters step S104;
Step S104, it is judged that whether C phase current virtual value Ic is equal to 0, if C is phase current virtual value Ic=0, then C phase is broken phase, and It is shown in display device module (5), if C phase current virtual value Ic is not equal to 0, then enters step S105.
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S105, it is judged that motor three-phase current is the most all in three-phase shortcircuit setting range, if in the range of, then motor three Short circuit, and is shown in display device module (5) mutually, if not in the range of, then enter step S106;
Step S106, it is judged that motor three-phase current is the most all in motor rotation blockage setting range, if in the range of, then motor blocks up Turn, and be shown in display device module (5), if not in the range of, then enter step S107;
Step S107, it is judged that motor three-phase current is the most all in overload setting range, if in the range of, then motor overload, Perform step S108, if not in the range of, then enter step S108.
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S108, it is judged that whether motor three-phase voltage exceedes overvoltage sets, sets if exceeding overvoltage, then motor over-voltage, Performing step S110, if setting not above overvoltage, then entering step S109;
Step S109, it is judged that whether motor three-phase voltage is less than under-voltage setting, if being less than under-voltage setting, then motor is under-voltage, holds Row step S110, if being not less than under-voltage setting, then enters step S110;
Step S110, it is judged that whether three-phase voltage balances, if three-phase voltage balance, then transfers signals to electric moter voltage electric current In signal acquiring processing system module (2), if imbalance of three-phase voltage, then transfer signals to equipment state diagnostic system mould In block (3).
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S111, carries out Fourier analysis to electric current, voltage signal, enters step S112 after completing;
Step S112, the data after process are transferred to energy source monitoring system module, enter step S113 after completing;
Step S113, it is judged that whether the pole of line frequency exceedes setting value by frequency DB difference, if exceeding setting value, then motor turns Sub-bar fault, and fault message is shown in display device module (5), if being not above setting value, then enter step S114;
Step S114, it is judged that whether the rotating speed side frequency value of line frequency exceedes setting value, if exceeding setting value, then motor generation is the most right Middle fault, and fault message is shown in display device module (5), if being not above setting value, then enter step S115.
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S115, it is judged that whether speed-frequency value exceedes setting value, if exceeding setting value, then motor generation fault of eccentricity, And fault message is shown in display device module (5), if being not above setting value, then enter step S116;
Step S116, it is judged that whether bearing fault frequency values exceedes setting value, if exceeding setting value, then motor bearings fault, And fault message is shown in display device module (5), if being not above setting value, then enter step S117.
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S117, it is judged that whether gearbox fault frequency values exceedes setting value, if exceeding setting value, then motor gearbox event Barrier, and fault message is shown in display device module (5), if being not above setting value, then enter step S118;
Step S118, it is judged that whether belt failure frequency values exceedes setting value, if exceeding setting value, then motor belt fault, And fault message is shown in display device module (5), if being not above setting value, then enter step S119;
Step S119, it is judged that whether blade fault frequency values exceedes setting value, if exceeding setting value, then motor blade fault, And fault message is shown in display device module (5).
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S201, electric moter voltage current signal acquisition processing system module (2) starts, and enters step S202 after completing;
Step S202, it is judged that whether the three-phase current of motor balances, if the three-phase balance of motor, then outputs signals to display In apparatus module (5), if the three of motor circuit imbalances, then carry out step S203;
Step S203, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three-phase current Relation judge earth fault phase, and output signals in display device module (5), if zero-sequence current is not more than setting value, then Carry out step S204;
Step S204, judges it is turn-to-turn short circuit or phase fault by the relation between three-phase current, and failure judgement phase, output Signal is in display device module (5).
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S301, equipment state diagnostic system module (3) starts, and enters step S302 after completing;
Step S302, calculates three phase of impedance, enters step S303 after completing;
Step S303, it is judged that whether three phase of impedance balance, if three-phase impedance balance, then outputs signals to display device module (5) In, if three-phase impedance unbalance, then carry out step S304;
Step S304, it is judged that whether zero-sequence current is more than setting value, if zero-sequence current is more than setting value, then by between three phase of impedance Relation judge earth fault phase, and output signals in display device module (5), if zero-sequence current is not more than setting value, then Carry out step S305;
Step S305, judges it is turn-to-turn short circuit or phase fault by the relation between three phase of impedance, and failure judgement phase, output Signal is in display device module (5).
A kind of motor driven systems energy monitor the most as claimed in claim 1 and the implementation method of trouble-shooter, it is special Levy and be: the implementation method of described device is further comprising the steps of:
Step S401, display device module (5) starts, and enters step S402 after completing;
Step S402, records current diagnostic result, enters step S403 after completing;
Step S403, it may be judged whether all data are all analyzed and are over, if data have not been analyzed, then outputs signals to motor control System module, if data analysis is over, then carries out step S404;
Step S404, shows diagnostic result, enters step S405 after completing;
Step S405, selects tripping operation or reports to the police, and enters step S406 after completing;
Step S406, EP (end of program).
CN201610245867.2A 2016-04-20 2016-04-20 Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof Pending CN105891714A (en)

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