CN106483461B - Electrical machine energy-saving analysis and fault state monitoring system - Google Patents
Electrical machine energy-saving analysis and fault state monitoring system Download PDFInfo
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- CN106483461B CN106483461B CN201710007351.9A CN201710007351A CN106483461B CN 106483461 B CN106483461 B CN 106483461B CN 201710007351 A CN201710007351 A CN 201710007351A CN 106483461 B CN106483461 B CN 106483461B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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Abstract
Electrical machine energy-saving analysis of the invention and fault state monitoring system, technical purpose is to provide a kind of electrical machine energy-saving analysis and fault state monitoring system for implementing electrical machine energy-saving and analyzing and carrying out malfunction monitoring, including CPU starting recording subsystem, cpu data processing subsystem and back-stage management subsystem three parts.CPU starting recording subsystem mainly completes the calculating of motor operation basic data, motor mutation starting amount calculating and motor mutation and out-of-limit starting arbitration functions；Cpu data processing subsystem mainly completes the functions such as mutation or out-of-limit starting recording, electrical fault type analysis, processing trend data, motor economical operation correlation data calculation, economic operation analysis；Back-stage management subsystem mainly completes realtime curve, recorded wave file and trend file and the functions such as shows.The present invention can alarm in the electrical fault initial stage at once as early as possible, organize anticipatory maintenance, to avoid accidental shutdown, reduce breakdown loss.
Description
Technical field
The present invention relates to electrical machine energy-saving and malfunction monitoring field more particularly to a kind of analysis of electrical machine energy-saving and malfunction prisons
Examining system.
Background technique
Conventionally, as a large amount of uses of motor, the raising of the energy-saving index of motor is always that industry pursues skill
Art target meets national economy and social development demand to the Energy Saving Control of motor；Motor is widely used in power plant, steel-making
The industry such as factory, naval vessels and national defence, are safely operated most important.Electrical fault not only damages motor itself, but also influences
Entire transmission system, once accidental shutdown, necessarily causes economic loss or even casualties.
Summary of the invention
Technical purpose of the invention is to provide one kind and can lead to by the energy conservation of motor and fault state monitoring in integrated completion
Monitoring electrical quantity is crossed, a kind of motor economic operation analysis and fault state monitoring system are provided.
In order to solve the above-mentioned technical problem, the technical scheme is that
Electrical machine energy-saving analysis and fault state monitoring system include
CPU starts recording subsystem, completes motor operation basic data for obtaining sampled data in programmable FPGA
It calculates, motor mutation starting amount calculates and motor is mutated and out-of-limit starting arbitration functions；Motor operation basic data includes three-phase
Voltage fundamental virtual value, three-phase current fundamental wave virtual value, non-equilibrium among three phase voltages, three-phase current unbalance degree, motor input
Active power, motor input reactive power, power factor, three-phase active energy, three-phase reactive energy, three-phase are regarded in electric energy, always
Active energy, total reactive energy, total view are in electric energy.The calculating motor is mutated starting amount: including: (1) negative sequence impedance value；(2)
(1±2s)f1Side frequency component and f1The ratio between amplitude of component and, wherein s be motor slip ratio, f1 is fundamental frequency；(3) outer ring is damaged
The extra current component of the characteristic frequency of wound；(4) the extra current component of the characteristic frequency of inner ring damage；(5) bulk damage is rolled
Characteristic frequency extra current component；(6) the extra current component of the characteristic frequency of retainer damage；
Cpu data processing subsystem；For receiving the data from CPU starting recording subsystem, mutation or out-of-limit is completed
Start recording, electrical fault type analysis, processing trend data, motor economical operation correlation data calculation, economic operation analysis,
Data storage function；
Back-stage management subsystem；For receiving the data from monitor board, realtime curve, recorded wave file are mainly completed
And the functions such as trend file is shown, data query.
Further, the type that the motor mutation starting amount calculates includes: stator mutation；Rotor mutation；Outer ring damage
Wound mutation；Inner ring damage mutation；Roll bulk damage mutation；Retainer damage mutation；
Further, the stator mutation are as follows: it is fixed that negative sequence impedance value is more than or equal to relative to the Sudden Changing Rate of previous value
When son mutation threshold value, start recording function；
Further, the rotor mutation are as follows: (1 ± 2s) f1Side frequency component and f1The ratio between amplitude of component and be greater than etc.
When rotor is mutated threshold value, start recording function；
Further, outer ring damage mutation are as follows: the extra current component of the characteristic frequency of outer ring damage relative to
When the ratio between amplitude of previous value is more than or equal to outer ring damage mutation threshold value, start recording function；
Further, inner ring damage mutation are as follows: the extra current component of the characteristic frequency of inner ring damage relative to
When the ratio between amplitude of previous value is more than or equal to inner ring damage mutation threshold value, start recording function；
Further, the rolling bulk damage sports: rolling the extra current component phase of the characteristic frequency of bulk damage
When the ratio between amplitude for previous value is more than or equal to rolling bulk damage mutation threshold value, start recording function；
Further, the retainer damage mutation are as follows: the extra current component phase of the characteristic frequency of retainer damage
When the ratio between amplitude for previous value is more than or equal to retainer damage mutation threshold value, start recording function；
Further, the out-of-limit starting type of the motor includes: that negative sequence impedance is out-of-limit；The characteristic frequency of outer ring damage
Extra current component is out-of-limit；The extra current component of the characteristic frequency of inner ring damage is out-of-limit；Roll the characteristic frequency of bulk damage
Extra current component is out-of-limit；The extra current component of the characteristic frequency of retainer damage is out-of-limit；
Further, the negative sequence impedance is out-of-limit are as follows: the negative sequence impedance value currently calculated is less than under negative phase-sequence apparent impedance
When limiting threshold value, negative sequence impedance gets over lower limit；When the negative sequence impedance value currently calculated is greater than negative phase-sequence apparent impedance upper limit threshold, negative phase-sequence resistance
The anti-more upper limit；
Further, the extra current component of the characteristic frequency of the outer ring damage is out-of-limit are as follows: the feature of outer ring damage
When the ratio between the amplitude of the extra current component of frequency relative to normal value is more than or equal to outer ring damage out-of-limit threshold value, start recording function
Energy；
Further, the extra current component of the characteristic frequency of the inner ring damage is out-of-limit are as follows: the feature of inner ring damage
When the extra current component of frequency is more than or equal to inner ring damage out-of-limit threshold value relative to the ratio between normal value, start recording function；
Further, the extra current component of the characteristic frequency for rolling bulk damage is out-of-limit are as follows: rolls bulk damage
The extra current component of characteristic frequency is more than or equal to relative to the ratio between normal value when rolling the out-of-limit threshold value of bulk damage, starts recording function
Energy；
Further, the extra current component of the characteristic frequency of the retainer damage is out-of-limit are as follows: retainer damage
When the extra current component of characteristic frequency is more than or equal to retainer damage out-of-limit threshold value relative to the ratio between normal value, start recording function
Energy；
Further, the stator mutation threshold value, rotor mutation threshold value, outer ring damage mutation threshold value, inner ring damage are prominent
Variable threshold value rolls bulk damage mutation threshold value, retainer damage mutation threshold value, negative phase-sequence apparent impedance lower threshold, negative phase-sequence depending on hindering
Anti- upper limit threshold, outer ring damage out-of-limit threshold value, inner ring damages out-of-limit threshold value, roll the out-of-limit threshold value of bulk damage, retainer damage is got over
Limit threshold value can be arranged in definite value file；
Further, the starting recording function is pushed forward 1 in starting point after being judged as mutation or out-of-limit exception
Cycle, starting point 10 cycle of pusher, records waveform using 10K sample rate；Cycle and cycle after starting point can also before starting point
To be reset by definite value file；
The beneficial effect of the embodiment of the present invention is: being analyzed by the economical operation state to motor, it can be estimated that electricity
The energy-saving potential of machine can alarm to the fault state monitoring of motor at once in the electrical fault initial stage as early as possible, and tissue is pre-
Know maintenance, to avoid accidental shutdown, reduces breakdown loss.
Detailed description of the invention
Fig. 1 is the working principle block diagram of one embodiment of the invention.
Specific embodiment
In conjunction with Fig. 1, the specific embodiment that the present invention will be described in detail, but claim is not limited in any way.When applying,
Invention software programming is implemented according to following framework: CPU starts recording subsystem, for obtaining hits in programmable FPGA
According to completing, motor operation basic data is calculated, motor mutation starting amount calculates and motor is mutated and out-of-limit starting arbitration functions；Electricity
It includes three-phase voltage fundamental wave virtual value, three-phase current fundamental wave virtual value, non-equilibrium among three phase voltages, three-phase that machine, which runs basic data,
Current unbalance factor, motor input active power, motor input reactive power, power factor, three-phase active energy, three-phase is idle
Electric energy, three-phase view are in electric energy, total active energy, total reactive energy, total view in electric energy.The calculating motor is mutated starting amount: packet
It includes: (1) negative sequence impedance value；(2)(1±2s)f1Side frequency component and f1The ratio between amplitude of component and, wherein s be motor slip ratio, f1
For fundamental frequency；(3) the extra current component of the characteristic frequency of outer ring damage；(4) additional electrical of the characteristic frequency of inner ring damage
Flow component；(5) the extra current component of the characteristic frequency of bulk damage is rolled；(6) additional electrical of the characteristic frequency of retainer damage
Flow component；Cpu data processing subsystem；For receiving the data from CPU starting recording subsystem, completing mutation or out-of-limit opening
Dynamic recording, electrical fault type analysis, processing trend data, motor economical operation correlation data calculation, economic operation analysis, number
According to store function；Back-stage management subsystem；For receiving the data from monitor board, realtime curve, recording are mainly completed
The functions such as file and trend file show, data query.
The processing trend data are as follows: not by three-phase voltage fundamental wave virtual value, three-phase current fundamental wave virtual value, three-phase voltage
The degree of balance, three-phase current unbalance degree, motor input active power, motor input reactive power, power factor, the active electricity of three-phase
Energy, three-phase reactive energy, three-phase view are in electric energy, total active energy, total reactive energy, total view in power storage to trend file
In, while to be also sent to backstage；The calculating motor economical operation relevant parameter: active including motor overall efficiency, operation
Efficiency and operation load factor；The mutation starts recording: after motor monitoring mutation starting, Wave data being stored into comtrade
Format recorded wave file；The out-of-limit starting recording: after the out-of-limit mutation starting of motor, Wave data is stored into comtrade format
Recorded wave file；The recorded wave file information includes: filename；Acquisition device ID；Acquisition device title；Motor title；When starting
Between；Start reason；Fault type and failure file size etc..The electrical fault type judgement: according to mutation or out-of-limit starting
Recorder data, judge the fault type of motor, comprising: stator winding inter-turn short circuit failure, rotor bar breaking fault and bearing therefore
Barrier；The motor way of economic operation judgement: motor overall efficiency is greater than or equal to specified overall efficiency and shows motor to electric energy
Using being economical；Motor overall efficiency is less than specified overall efficiency but greater than the 60% of specified overall efficiency, then motor is to electricity
Can utilize is reasonable；Motor overall efficiency is less than the 60% of specified overall efficiency, shows that motor is not to utilization of power
Economical；The machine operating condition analysis: when each phase current fundamental wave virtual value is more than or equal to setting overloading threshold * rated current
When, motor overload operation；When each phase current fundamental wave virtual value is less than or equal to setting underloading threshold value * rated current, motor underloading
Operation；When each phase current fundamental wave virtual value is less than or equal to set unloaded threshold value * rated current, empty load of motor operation；The reality
When data show: including real-time display motor operation master data；Rated motor overall efficiency；Motor overall efficiency；It is specified to have
Effect rate；Load factor；Motor economical operation determines result；Energy data；Machine operating condition is shown: overload, be lightly loaded, is unloaded,
Normally；Electrical fault type is shown；Trend data is shown；The off-line analysis software: it can support to open user-defined format
Motor monitoring trend file and recorded wave file, and analyze the fault type of motor.CPU starts recording subsystem first from FPGA
(or firmware circuitry with same function) obtains sampled data, and sampled data includes three-phase voltage and three-phase current, and is judged
Motor monitoring business whether is enabled, when enabling motor monitoring business, the master data of motor operation is calculated using sampled data,
Include: three-phase voltage fundamental wave virtual value, three-phase current fundamental wave virtual value, non-equilibrium among three phase voltages, three-phase current unbalance degree,
Motor inputs active power, motor input reactive power, power factor, three-phase active energy, three-phase reactive energy, three-phase view and exists
Electric energy, total active energy, total reactive energy, total view are in electric energy；Mutation starting amount is calculated, starts recording for judging whether, opens
The principle of dynamic judgement is shown in upper the motor mutation starting and out-of-limit starting judgment method；It is finally that the motor operation of calculating is basic
Data and starting recorder data are sent to cpu data processing subsystem；
Cpu data processing subsystem receives motor operation master data and starting record from CPU starting recording subsystem
Wave number evidence is handled by the motor operation master data received, and storage to file Production trend data is sent to backstage
It is shown；The economical operation related data that motor can be calculated by the active power data received, then judges electricity again
Machine whether economical operation, the method for judgement are as follows: motor overall efficiency be greater than or equal to specified overall efficiency show motor to electric energy
Using being economical；Motor overall efficiency is less than specified overall efficiency but greater than the 60% of specified overall efficiency, then motor is to electricity
Can utilize is reasonable；Motor overall efficiency is less than the 60% of specified overall efficiency, shows that motor is not to utilization of power
Economical；It is analyzed by the starting recorder data received, judges whether there is electrical fault and fault type；Finally by institute
Some trend datas, fault type, recorder data and way of economic operation etc. are stored, and after all data are sent to
Platform management subsystem；Back-stage management subsystem receives the data from cpu data processing subsystem, and the data received are carried out
It has been shown that, recorded wave file and trend data file for production can use off-line analysis software and carry out opening and accident analysis.
The embodiment of the present invention is analyzed by the economical operation state to motor, it can be estimated that the energy-saving potential of motor, to motor
Fault state monitoring can alarm in the electrical fault initial stage at once as early as possible, anticipatory maintenance be organized, so that accident be avoided to stop
Machine reduces breakdown loss.
Claims (4)
1. electrical machine energy-saving analysis and fault state monitoring system, it is characterized in that: including
CPU starts recording subsystem, calculated for obtaining sampled data completion motor operation basic data in programmable FPGA,
Motor is mutated the calculating of starting amount and motor mutation or out-of-limit starting arbitration functions；Motor operation basic data includes three-phase voltage base
Wave virtual value, three-phase current fundamental wave virtual value, non-equilibrium among three phase voltages, three-phase current unbalance degree, motor input wattful power
Rate, motor input reactive power, power factor, three-phase active energy, three-phase reactive energy, three-phase view are in electric energy, total active electricity
Energy, total reactive energy and total view are in electric energy；It calculates motor and is mutated starting amount: while including following six: (1) negative sequence impedance value；
(2)(1±2s)f1Side frequency component and f1The ratio between amplitude of component and, wherein s be motor slip ratio, f1For fundamental frequency；(3) outside
Enclose the extra current component of the characteristic frequency of damage；(4) the extra current component of the characteristic frequency of inner ring damage；(5) rolling element
The extra current component of the characteristic frequency of damage；(6) the extra current component of the characteristic frequency of retainer damage；
Cpu data processing subsystem completes mutation or out-of-limit starting for receiving the data from CPU starting recording subsystem
Recording, electrical fault type analysis, processing trend data, motor economical operation correlation data calculation and data storage function；
Back-stage management subsystem completes realtime curve, recording for receiving the data from cpu data processing subsystem
File and trend file are shown and data query function.
2. electrical machine energy-saving analysis according to claim 1 and fault state monitoring system, it is characterized in that: the out-of-limit starting
Arbitration functions include that negative sequence impedance is out-of-limit, the extra current component of the characteristic frequency of outer ring damage is out-of-limit, the spy of inner ring damage
The extra current component of sign frequency is out-of-limit, it is out-of-limit to roll the extra current component of the characteristic frequency of bulk damage and retainer damage
The extra current component of characteristic frequency is out-of-limit；
The negative sequence impedance is out-of-limit are as follows: when the negative sequence impedance value currently calculated is less than negative phase-sequence apparent impedance lower threshold, negative phase-sequence resistance
Anti- more lower limit；When the negative sequence impedance value currently calculated is greater than negative phase-sequence apparent impedance upper limit threshold, negative sequence impedance gets over the upper limit；
The extra current component of the characteristic frequency of the outer ring damage is out-of-limit are as follows: the additional electrical flow point of the characteristic frequency of outer ring damage
When measuring the ratio between amplitude relative to normal value more than or equal to the outer ring out-of-limit threshold value of damage, start recording function；
The extra current component of the characteristic frequency of the inner ring damage is out-of-limit are as follows: the additional electrical flow point of the characteristic frequency of inner ring damage
When amount is more than or equal to inner ring damage out-of-limit threshold value relative to the ratio between normal value, start recording function；
The extra current component of the characteristic frequency for rolling bulk damage is out-of-limit are as follows: rolls the additional electrical of the characteristic frequency of bulk damage
Flow component is more than or equal to relative to the ratio between normal value when rolling the out-of-limit threshold value of bulk damage, starts recording function；
The extra current component of the characteristic frequency of the retainer damage is out-of-limit are as follows: the additional electrical of the characteristic frequency of retainer damage
When flow component is more than or equal to retainer damage out-of-limit threshold value relative to the ratio between normal value, start recording function.
3. electrical machine energy-saving analysis according to claim 1 and fault state monitoring system, it is characterized in that: when being judged as mutation
Or after out-of-limit exception, it is pushed forward 1 cycle in starting point, starting point 10 cycle of pusher records waveform using 10K sample rate；Starting point
Cycle can be reset by definite value after preceding cycle and starting point.
4. electrical machine energy-saving analysis according to claim 1 and fault state monitoring system, it is characterized in that: including that can prop up
The motor monitoring trend file and recorded wave file for opening user-defined format are held, and analyzes the fault type of motor.
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| CN107102195B (en) * | 2017-04-26 | 2020-03-20 | 顺特电气设备有限公司 | Electric quantity processing and network transmission method of intelligent transformer terminal |
| CN110058157B (en) * | 2019-04-30 | 2021-06-04 | 杭州安脉盛智能技术有限公司 | Motor monitoring method and system based on symmetric component method and multi-dimensional index fusion |
| CN110058156A (en) * | 2019-04-30 | 2019-07-26 | 杭州安脉盛智能技术有限公司 | Based on instantaneous three-phase voltage current degree of unbalancedness motor on-line monitoring method and system |
| WO2021166042A1 (en) * | 2020-02-17 | 2021-08-26 | 三菱電機株式会社 | Diagnostic device of permanent magnet synchronous motor, and inverter comprising said diagnostic device |
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| US5477163A (en) * | 1994-08-03 | 1995-12-19 | General Electric Company | Turn fault detection |
| US8135551B2 (en) * | 2009-02-03 | 2012-03-13 | General Electric Company | Robust on line stator turn fault identification system |
| US8140291B2 (en) * | 2009-02-03 | 2012-03-20 | General Electric Company | Stator turn fault detection apparatus and method for induction machine |
| CN102135600A (en) * | 2011-01-28 | 2011-07-27 | 中国人民解放军海军潜艇学院 | Fault detection device and method of asynchronous motor |
| CN102707232B (en) * | 2012-06-01 | 2015-10-07 | 深圳市海亿达能源科技股份有限公司 | Motor apparatus state on_line monitoring device and monitoring method thereof |
| CN103439607B (en) * | 2013-08-28 | 2016-11-23 | 三川电力设备股份有限公司 | By method and system and the Fault Locating Method of failure wave-recording identification element population parameter |
| CN103969579B (en) * | 2014-03-24 | 2016-09-28 | 河海大学 | Permanent-magnetic synchronous motor stator unbalanced fault diagnostic method and system |
| CN104459540B (en) * | 2014-12-15 | 2017-02-22 | 云南电网有限责任公司电网规划研究中心 | Power-grid-impact-free detection method for low voltage ride through function of doubly-fed wind turbine generator system |
| CN105242131B (en) * | 2015-09-09 | 2018-03-13 | 深圳市双合电气股份有限公司 | Energy consumption real time monitoring managing device and method |
| CN105891714A (en) * | 2016-04-20 | 2016-08-24 | 潍坊弗莱瑞电子科技有限公司 | Motor-driven system energy monitoring and fault diagnosis apparatus and implementation method thereof |
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