CN104506137A - Equipment fault diagnosis method and apparatus - Google Patents
Equipment fault diagnosis method and apparatus Download PDFInfo
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- CN104506137A CN104506137A CN201410697227.6A CN201410697227A CN104506137A CN 104506137 A CN104506137 A CN 104506137A CN 201410697227 A CN201410697227 A CN 201410697227A CN 104506137 A CN104506137 A CN 104506137A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The embodiments of the invention provide an equipment fault diagnosis method and apparatus. The method specifically comprises the following steps: periodically acquiring operation parameters of equipment in a time period; according to the operation parameters of each equipment unit in the equipment in the time period, obtaining the performance index deviation of each equipment unit in the equipment through an analysis; and according to the performance index deviation of each equipment unit in the equipment, determining the operation performance of each equipment unit in the equipment in the time period. According to the embodiments of the invention, the false reporting rate of faults can be reduced, and the generating capacity of a power station is improved.
Description
Technical field
The present invention relates to technical field of power generation, particularly relate to a kind of equipment fault diagnosis method and device.
Background technology
Along with becoming increasingly conspicuous of globe ecological environmental problems, greatly develop regenerative resource and become important energy source industrial policy, photovoltaic generation have pollution less, the feature such as efficiency utilizes rationally, system economy is good, become the national energy forms of electricity generation widelyd popularize in rural area and city.
Along with the Large scale construction of photovoltaic plant, occurred the frequent fault of equipment, equipment fails sound and stable operation, equipment fault responds not in time, the low inferior problem of equipment service behaviour, these problems all will affect the overall energy output in power station.
Existing scheme adopts the equipment fault diagnosis mode based on remote signalling information, here remote signalling information specifically can comprise: the various status signal for indication equipment position, device action, as accident condition signal, circuit breaker position status signal, isolating switch position state signal etc.
Although the above-mentioned equipment fault diagnosis mode based on remote signalling information has the good advantage of real-time.But the problem such as by the impact of the factors such as wiring error, channel failure, electromagnetic interference, the above-mentioned equipment fault diagnosis mode based on remote signalling information inevitably exists wrong report, fail to report.Such as, when relay is in off-state, the input of optocoupler is unsettled, is easy to the interference voltage of external electromagnetic field more than 24V, and optocoupler conducting just can be made to cause mal-telecommunic ation, and also, an interference signal just may cause remote signalling warning.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide a kind of equipment fault diagnosis method and device, can reduce the rate of false alarm of fault, improves power station energy output.
In order to solve the problem, the invention discloses a kind of equipment fault diagnosis method, comprising:
Periodically collecting device operational factor in a period of time;
According to the operational factor of unit each in this equipment within this time period, analyze the performance index deviation obtaining each unit in this equipment;
According to the performance index deviation of unit each in this equipment, determine the runnability of each unit within this time period in this equipment.
Preferably, described according to the operational factor of unit each in this equipment within this time period, analyze the step obtaining the performance index deviation of each unit in this equipment, comprising:
To add up in this equipment all devices unit in the performance index average of synchronization point;
For unit each in this equipment, add up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
Preferably, the described performance index deviation according to unit each in this equipment, determine the step of the runnability of each unit within this time period in this equipment, comprising:
Compare the performance index deviation of each unit in this equipment and preset threshold parameter, obtain corresponding comparative result;
When the comparative result of certain unit meets the condition of preset runnability in the device, judge that runnability in this equipment in this time period of this unit is as this preset runnability.
Preferably, described operational factor comprises: one or more in current parameters, temperature parameter and power parameter.
Preferably, in this equipment, the performance index of each unit comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit power output and unit unit capacity power output.
On the other hand, the invention also discloses a kind of equipment fault diagnosis device, comprising:
Acquisition module, for periodicity collecting device operational factor in a period of time;
Analysis module, for according to the operational factor of unit each in this equipment within this time period, analyzes the performance index deviation obtaining each unit in this equipment; And
Determination module, for the performance index deviation according to unit each in this equipment, determines the runnability of each unit within this time period in this equipment.
Preferably, described analysis module, comprising:
First statistic unit, for adding up in this equipment all devices unit in the performance index average of synchronization point; And
Second statistic unit, for for unit each in this equipment, adds up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
Preferably, described determination module, comprising:
Comparing unit, for comparing the performance index deviation of each unit in this equipment and preset threshold parameter, obtains corresponding comparative result; And
Identifying unit, when the comparative result for certain unit in the device meets the condition of preset runnability, judges that runnability in this equipment in this time period of this unit is as this preset runnability.
Preferably, described operational factor comprises: one or more in current parameters, temperature parameter and power parameter.
Preferably, in this equipment, the performance index of each unit comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit power output and unit unit capacity power output.
Compared with prior art, the embodiment of the present invention comprises following advantage:
First, relative to the existing equipment fault diagnosis mode based on remote signalling information, the present invention obtains the runnability of each unit within this time period in this equipment by analyzing according to equipment operational factor diagnosis in a period of time, can reduce the rate of false alarm of fault; Further, for technical staff, the runnability in its this time period that can obtain according to diagnosis, the fault of each unit in quick position equipment, thus can ensure that sane, the best performance of equipment run, final raising power station energy output;
Secondly, runnability of the present invention can be set to multiple runnability grade, as fault level, bad grade, good level, outstanding grade etc., technical staff can adjust equipment and generating flow process in real time according to these runnability grades, thus can ensure that sane, the best performance of equipment run, final raising power station energy output.
Accompanying drawing explanation
Fig. 1 shows the flow chart of steps of a kind of equipment fault diagnosis method embodiment of the present invention;
Fig. 2 shows the flow chart of steps of a kind of photovoltaic group string method for diagnosing faults embodiment of the present invention; And
Fig. 3 shows the structured flowchart of a kind of equipment fault diagnosis device of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
With reference to Fig. 1, show the flow chart of steps of a kind of equipment fault diagnosis method embodiment of the present invention, specifically can comprise the steps:
Step 101, periodically collecting device operational factor in a period of time;
The embodiment of the present invention can be applied in the generating electric power station systems such as photovoltaic plant, for equipment operational factor in a period of time in the electric power station system that generated electricity by analysis foundation, and the runnability of each unit within this time period in this equipment of quick diagnosis; Runnability in this time period that technical staff can obtain according to diagnosis, the fault of each unit in quick position equipment, thus can ensure that sane, the best performance of equipment run, final raising power station energy output.The embodiment of the present invention is mainly described for photovoltaic plant, and other generating electric power station systems are cross-referenced.
Photovoltaic plant is made up of multiple equipment usually, and such as, in a kind of application example of the present invention, the part of photovoltaic plant specifically can comprise: photovoltaic module, photovoltaic group string, header box, inverter etc.Wherein, photovoltaic module is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) being specifically designed to photovoltaic plant, is commonly called as solar energy photovoltaic panel; Photovoltaic group string is the square formation be chained together by photovoltaic module; Header box is a kind of collector-shoe gear being specifically designed to photovoltaic plant, for the electric current of some photovoltaic group string square formations is converged access subsequent device; Inverter is a kind ofly be specifically designed to the device that direct current energy is converted to AC energy by photovoltaic plant.Be appreciated that those skilled in the art can select a kind of equipment or plurality of devices to carry out failure diagnosis according to the actual requirements.
The operational factor of the equipment also i.e. parameter of equipment in running, in another kind of application example of the present invention, described operational factor specifically can comprise: one or more in current parameters, temperature parameter and power parameter.Certainly, the embodiment of the present invention is not limited concrete operational factor.
In another application example of the present invention, can 1 hour as time period length, within 5 minutes, be collection period, periodically collecting device operational factor in a period of time.Certainly, those skilled in the art can determining time length and collection period according to the actual requirements, and the embodiment of the present invention is not limited the time period length gathered and collection period.
In one preferred embodiment of the invention, for the unit such as multiple assembly or branch road of equipment, can stablize when at sunshine, gather the operational factors such as its electric current when assembly is unobstructed, communication is normal, unit type is consistent, also namely under equal conditions gather operational factor, with ignore the factors such as irradiance, the temperature difference, communication failure on the impact of collection operational factor.
Step 102, according to the operational factor of unit each in this equipment within this time period, analyze and obtain the performance index deviation of each unit in this equipment;
In actual applications, in this equipment, the performance index of each unit specifically can comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit unit capacity temperature, unit power output and unit unit capacity power output.
For header box, a header box connects 16 string branch roads, and every bar branch road wherein specifically can comprise a photovoltaic group string.The electric current that every bar branch road exports all can be used for the runnability weighing header box, and the larger then runnability of electric current that usual branch road exports is better.In addition, the temperature of every bar branch road also can be used for the runnability weighing header box, and the higher then power consumption of typical temperature is larger, and runnability is also poorer.To sum up, header box can adopt the performance index such as branch current, branch road unit capacity electric current, branch road temperature, branch road unit capacity temperature.
In like manner, photovoltaic group string also can adopt the performance index such as branch current, branch road unit capacity electric current, branch road temperature, branch road unit capacity temperature.Inverter can adopt the performance index such as branch road power output, branch road unit capacity power output, branch road temperature, branch road unit capacity temperature.
Be appreciated that those skilled in the art can according to actual conditions adopt in above-mentioned performance index one or more.For photovoltaic group string, can when organize serial type number make peace the group string institute tributary capacity that connects consistent, adopt the performance index such as branch current, branch road temperature; Or, can when organize serial type number inconsistent and/or the group string institute tributary capacity that connects is inconsistent, adopt the performance index such as branch road unit capacity electric current, branch road unit capacity temperature, also namely the performance index such as branch road unit capacity electric current, branch road unit capacity temperature just have comparativity in and/or the inconsistent situation of group string institute's tributary capacity that connects number inconsistent at group serial type.
The present invention can adopt various statistical method, and to the performance index deviation obtaining each unit in this equipment according to the operational factor analysis of each unit within this time period in equipment, the present invention is not limited concrete statistical method.
First the example calculating branch road unit capacity performance index is provided.
Such as, a photovoltaic group is connected in series 22 pieces of planks, and the capacity of every block plank specifically comprises 250W or 245W, and therefore, the branch road unit capacity electric current that the current value collected obtains divided by the capacity of branch road just has comparativity.Suppose that branch road connects 22 pieces of planks (245W), then the capacity of this branch road is 22*245.
And for example, inverter capacity is 500KW, and so the branch road unit capacity power output of inverter can be expressed as: branch road power output/1000/500.
For branch road unit capacity temperature, because the computational process of its computational process and branch road unit capacity electric current is similar, and therefore not to repeat here, cross-referenced.
In one preferred embodiment of the invention, described according to the operational factor of unit each in this equipment within this time period, analyze the step obtaining the performance index deviation of each unit in this equipment, specifically can comprise:
Sub-step S121, to add up in this equipment all devices unit in the performance index average of synchronization point;
Sub-step S122, for unit each in this equipment, add up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
With reference to table 1, show the example of the branch current index of 8 branch roads within this time period of 9:00-9:55 in a kind of photovoltaic group string of the present invention, the collection period of this example is 5 minutes, therefore this time period specifically comprises 12 moment point.
Table 1
| Moment point | Branch road 1 | Branch road 2 | Branch road 3 | Branch road 4 | Branch road 5 | Branch road 6 | Branch road 7 | Branch road 8 |
| 9:00 | 2.51 | 0.4 | 2.51 | 0 | 1.6 | 2.25 | 2.53 | 2.23 |
| 9:05 | 3.15 | 0.35 | 2.99 | 0 | 1.92 | 2.76 | 3.1 | 2.69 |
| 9:10 | 4.03 | 1.69 | 3.97 | 0 | 2.73 | 3.49 | 3.99 | 3.51 |
| 9:15 | 5.01 | 0.74 | 5.1 | 0 | 3.9 | 4.9 | 5.04 | 4.76 |
| 9:20 | 5.36 | 3.83 | 5.51 | 0 | 4.9 | 5.42 | 5.35 | 5.35 |
| 9:25 | 5.56 | 4.81 | 5.85 | 0 | 5.56 | 5.76 | 5.77 | 5.79 |
| 9:30 | 5.9 | 5.58 | 6.06 | 0 | 5.95 | 5.99 | 6.01 | 6.13 |
| 9:35 | 6.17 | 0.13 | 6.29 | 0 | 6.33 | 6.2 | 6.24 | 6.36 |
| 9:40 | 6.31 | 6.34 | 6.43 | 0 | 6.47 | 6.36 | 6.38 | 6.49 |
| 9:45 | 6.42 | 0.58 | 6.54 | 0 | 6.61 | 6.47 | 6.49 | 6.63 |
| 9:50 | 6.56 | 6.72 | 6.68 | 0 | 6.74 | 6.65 | 6.67 | 6.79 |
| 9:55 | 6.74 | 0.88 | 6.86 | 0 | 6.9 | 6.79 | 6.79 | 6.91 |
In specific implementation, sub-step S1 can add up the average of these 8 branch roads at the branch current of synchronization point, obtains the branch current average of 12 moment point; Sub-step S2 then can for these 8 branch roads, add up its branch current in each moment point relative to the deviation of the branch current average of corresponding moment point, as its branch current deviation in each moment point, such as, branch road 1 is the difference of the branch current average of its branch current at 9:00 and 9:00 in the branch current deviation of 9:00.
With reference to table 2, to show in table 18 branch roads in the branch current deviation in each moment point.
Table 2
| Moment point | Branch road 1 | Branch road 2 | Branch road 3 | Branch road 4 | Branch road 5 | Branch road 6 | Branch road 7 | Branch road 8 |
| 9:00 | 0.75625 | -1.35375 | 0.75625 | -1.75375 | -0.15375 | 0.49625 | 0.77625 | 0.47625 |
| 9:05 | 1.03 | -1.77 | 0.87 | -2.12 | -0.2 | 0.64 | 0.98 | 0.57 |
| 9:10 | 1.10375 | -1.23625 | 1.04375 | -2.92625 | -0.19625 | 0.56375 | 1.06375 | 0.58375 |
| 9:15 | 1.32875 | -2.94125 | 1.41875 | -3.68125 | 0.21875 | 1.21875 | 1.35875 | 1.07875 |
| 9:20 | 0.895 | -0.635 | 1.045 | -4.465 | 0.435 | 0.955 | 0.885 | 0.885 |
| 9:25 | 0.6725 | -0.0775 | 0.9625 | -4.8875 | 0.6725 | 0.8725 | 0.8825 | 0.9025 |
| 9:30 | 0.6975 | 0.3775 | 0.8575 | -5.2025 | 0.7475 | 0.7875 | 0.8075 | 0.9275 |
| 9:35 | 1.455 | -4.585 | 1.575 | -4.715 | 1.615 | 1.485 | 1.525 | 1.645 |
| 9:40 | 0.7125 | 0.7425 | 0.8325 | -5.5975 | 0.8725 | 0.7625 | 0.7825 | 0.8925 |
| 9:45 | 1.4525 | -4.3875 | 1.5725 | -4.9675 | 1.6425 | 1.5025 | 1.5225 | 1.6625 |
| 9:50 | 0.70875 | 0.86875 | 0.82875 | -5.85125 | 0.88875 | 0.79875 | 0.81875 | 0.93875 |
| 9:55 | 1.50625 | -4.35375 | 1.62625 | -5.23375 | 1.66625 | 1.55625 | 1.55625 | 1.67625 |
Step 103, performance index deviation according to unit each in this equipment, determine the runnability of each unit within this time period in this equipment.
In the embodiment of the present invention, performance index deviation can be used for representing the difference of individual device unit relative to overall device unit, as a rule, these performance index of positive performance index deviation larger then individual device unit are better, these performance index of negative performance index deviation less then individual device unit are poorer, thus according to the performance index deviation of individual device unit, the runnability of individual device unit within this time period can be determined.
In actual applications, according to the mapping relations between performance index and runnability, the runnability of individual device unit within this time period can also be determined.Such as, there is proportional relation in usual branch current and branch road power output and runnability, like this, branch current and performance index corresponding to branch road power output better, the runnability of branch road is better; Branch current and performance index corresponding to branch road power output poorer, the runnability of branch road is poorer.And for example, there is inverse relation in the branch road temperature in usual range of operation and runnability, and like this, performance index corresponding to branch road temperature are better, and the runnability of branch road is poorer.
In one preferred embodiment of the invention, the described performance index deviation according to unit each in this equipment, determine that the step of the runnability of each unit within this time period in this equipment specifically can comprise:
Sub-step S131, the performance index deviation comparing each unit in this equipment and preset threshold parameter, obtain corresponding comparative result;
When the comparative result of sub-step S132, in the device certain unit meets the condition of preset runnability, judge that runnability in this equipment in this time period of this unit is as this preset runnability.
Here preset thresholding specifically can comprise: numeric threshold and ratio thresholding etc.
In a kind of application example of the present invention, numeric threshold and ratio thresholding all can have corresponding upper and lower bound.Such as, can the preset proportion upper limit be 70%, ratio lower limit be 50%; Suppose that all devices unit is A in the performance index average of synchronization point, also can arrange numerical upper limits is A*70%, and numerical lower limits is A*50% etc.So, if the performance index deviation of certain branch road has surmounted this numerical upper limits, can think that this branch road is the good branch road of generating; If the performance index deviation of certain branch road is lower than this numerical lower limits, then can think that this branch road is fault branch, etc.Apply this decision condition, the branch road 4 in table 2 can be defined as fault branch.
Be appreciated that, the decision condition of the better branch road of above-mentioned generating and fault branch machine and correspondence just exemplarily, runnability can also be set to multiple runnability grade according to actual demand by those skilled in the art, as fault level, bad grade, good level, outstanding grade etc., and decision condition corresponding to multiple runnability grade can be set.
Such as, in another kind of application example of the present invention, numeric threshold and ratio thresholding can also have corresponding level threshold, as the upper limit, middle limit and lower limit.If the performance index deviation of certain branch road has surmounted this upper limit, can think that this branch road is the outstanding branch road of generating; If the performance index deviation of certain branch road is limit between this upper limit in this, then can think that this branch road is for the good branch road of generating; If the performance index deviation of certain branch road is limit lower than in this, then can think that this branch road is for the bad branch road of generating; If the performance index deviation of certain branch road is lower than this lower limit, then can think that this branch road is fault branch, etc.Apply this decision condition, the branch road 2 in table 2 can be defined as the bad branch road that generates electricity.
To sum up, the embodiment of the present invention is collecting device operational factor in a period of time periodically, according to the operational factor of unit each in this equipment within this time period, analyze the performance index deviation obtaining each unit in this equipment, according to the performance index deviation of unit each in this equipment, determine the runnability of each unit within this time period in this equipment, tool has the following advantages:
First, relative to the existing equipment fault diagnosis mode based on remote signalling information, the present invention obtains the runnability of each unit within this time period in this equipment by analyzing according to equipment operational factor diagnosis in a period of time, can reduce the rate of false alarm of fault; Further, for technical staff, the runnability in its this time period that can obtain according to diagnosis, the fault of each unit in quick position equipment, thus can ensure that sane, the best performance of equipment run, final raising power station energy output;
Secondly, runnability of the present invention can be set to multiple runnability grade, as fault level, bad grade, good level, outstanding grade etc., technical staff can adjust equipment and generating flow process in real time according to these runnability grades, thus can ensure that sane, the best performance of equipment run, final raising power station energy output.
For making those skilled in the art understand the present invention better, provide the failure diagnostic process of photovoltaic group string below, the failure diagnostic process of the miscellaneous equipment such as header box, inverter is cross-referenced.
With reference to Fig. 2, show the flow chart of steps of a kind of photovoltaic group string method for diagnosing faults embodiment of the present invention, specifically can comprise the steps:
Step 201, stable at sunshine, assembly is unobstructed, in the normal situation that communicates, periodically gather photovoltaic group string current parameters in a period of time;
Step 202, judge that whether group serial type number is consistent, and whether decision set tributary capacity that string connects is consistent;
Step 203, when organize serial type number make peace the group string institute tributary capacity that connects consistent, according to photovoltaic group string current parameters in a period of time, calculate the branch current deviation of each branch road in photovoltaic group string;
Step 204, when organize serial type number inconsistent and/or the group string institute tributary capacity that connects is inconsistent, according to photovoltaic group string current parameters in a period of time, calculate the branch road unit capacity electric current of each branch road in photovoltaic group string, and calculate the branch road unit capacity current deviation of each branch road in photovoltaic group string;
Step 205, according to the branch current deviation of each branch road in photovoltaic group string or branch road unit capacity current deviation, determine the runnability of each branch road within this time period in photovoltaic group string.
For embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the embodiment of the present invention is not by the restriction of described sequence of movement, because according to the embodiment of the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to embodiment, and involved action might not be that the embodiment of the present invention is necessary.
With reference to Fig. 3, show the structured flowchart of a kind of equipment fault diagnosis device of the present invention, specifically can comprise:
Acquisition module 301, for periodicity collecting device operational factor in a period of time;
Analysis module 302, for according to the operational factor of unit each in this equipment within this time period, analyzes the performance index deviation obtaining each unit in this equipment; And
Determination module 303, for the performance index deviation according to unit each in this equipment, determines the runnability of each unit within this time period in this equipment.
In one preferred embodiment of the invention, described analysis module 301, specifically can comprise:
First statistic unit, for adding up in this equipment all devices unit in the performance index average of synchronization point; And
Second statistic unit, for for unit each in this equipment, adds up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
In another preferred embodiment of the invention, described determination module 303, specifically can comprise:
Comparing unit, for comparing the performance index deviation of each unit in this equipment and preset threshold parameter, obtains corresponding comparative result; And
Identifying unit, when the comparative result for certain unit in the device meets the condition of preset runnability, judges that runnability in this equipment in this time period of this unit is as this preset runnability.
In another preferred embodiment of the present invention, described operational factor specifically can comprise: one or more in current parameters, temperature parameter and power parameter.
In embodiments of the present invention, preferably, in this equipment, the performance index of each unit comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit power output and unit unit capacity power output.
For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art should understand, the embodiment of the embodiment of the present invention can be provided as method, device or computer program.Therefore, the embodiment of the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the embodiment of the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The embodiment of the present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, terminal equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminal equipment to produce a machine, making the instruction performed by the processor of computer or other programmable data processing terminal equipment produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing terminal equipment, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded on computer or other programmable data processing terminal equipment, make to perform sequence of operations step to produce computer implemented process on computer or other programmable terminal equipment, thus the instruction performed on computer or other programmable terminal equipment is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of embodiment of the present invention scope.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the terminal equipment comprising described key element and also there is other identical element.
Above to a kind of equipment fault diagnosis method provided by the present invention, and a kind of equipment fault diagnosis device, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an equipment fault diagnosis method, is characterized in that, comprising:
Periodically collecting device operational factor in a period of time;
According to the operational factor of unit each in this equipment within this time period, analyze the performance index deviation obtaining each unit in this equipment;
According to the performance index deviation of unit each in this equipment, determine the runnability of each unit within this time period in this equipment.
2. the method for claim 1, is characterized in that, described according to the operational factor of unit each in this equipment within this time period, analyzes the step obtaining the performance index deviation of each unit in this equipment, comprising:
To add up in this equipment all devices unit in the performance index average of synchronization point;
For unit each in this equipment, add up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
3. method as claimed in claim 1 or 2, is characterized in that the described performance index deviation according to unit each in this equipment is determined the step of the runnability of each unit within this time period in this equipment, being comprised:
Compare the performance index deviation of each unit in this equipment and preset threshold parameter, obtain corresponding comparative result;
When the comparative result of certain unit meets the condition of preset runnability in the device, judge that runnability in this equipment in this time period of this unit is as this preset runnability.
4. the method for claim 1, is characterized in that, described operational factor comprises: one or more in current parameters, temperature parameter and power parameter.
5. method as claimed in claim 1 or 2 or 3 or 4, it is characterized in that, in this equipment, the performance index of each unit comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit power output and unit unit capacity power output.
6. an equipment fault diagnosis device, is characterized in that, comprising:
Acquisition module, for periodicity collecting device operational factor in a period of time;
Analysis module, for according to the operational factor of unit each in this equipment within this time period, analyzes the performance index deviation obtaining each unit in this equipment; And
Determination module, for the performance index deviation according to unit each in this equipment, determines the runnability of each unit within this time period in this equipment.
7. device as claimed in claim 6, it is characterized in that, described analysis module, comprising:
First statistic unit, for adding up in this equipment all devices unit in the performance index average of synchronization point; And
Second statistic unit, for for unit each in this equipment, adds up its performance index in each moment point relative to the deviation of the performance index average of corresponding moment point, as its performance index deviation in each moment point.
8. device as claimed in claims 6 or 7, it is characterized in that, described determination module, comprising:
Comparing unit, for comparing the performance index deviation of each unit in this equipment and preset threshold parameter, obtains corresponding comparative result; And
Identifying unit, when the comparative result for certain unit in the device meets the condition of preset runnability, judges that runnability in this equipment in this time period of this unit is as this preset runnability.
9. device as claimed in claim 6, it is characterized in that, described operational factor comprises: one or more in current parameters, temperature parameter and power parameter.
10. the device as described in claim 6 or 7 or 8 or 9, it is characterized in that, in this equipment, the performance index of each unit comprise: one or more in unit electric current, unit unit capacity electric current, unit temperature, unit power output and unit unit capacity power output.
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