CN107528293A - Unit fault processing method and device - Google Patents
Unit fault processing method and device Download PDFInfo
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- CN107528293A CN107528293A CN201710630863.0A CN201710630863A CN107528293A CN 107528293 A CN107528293 A CN 107528293A CN 201710630863 A CN201710630863 A CN 201710630863A CN 107528293 A CN107528293 A CN 107528293A
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- 238000003672 processing method Methods 0.000 title claims description 7
- 238000012545 processing Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims description 17
- 238000010248 power generation Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
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Abstract
The invention provides a method and a device for processing unit faults, wherein the method comprises the following steps: determining the fault level of the unit fault; in the case that the fault is of a first fault level, cutting off the power supply; and if the fault is in the second fault level, processing the fault by adopting a processing mode corresponding to the fault type of the second fault level without cutting off the power supply. The invention solves the technical problems of the service life reduction and the user experience reduction of the grid-connected relay caused by the shutdown of the existing unit when a fault occurs, and achieves the technical effects of effectively prolonging the service life of the grid-connected relay and improving the user experience.
Description
Technical field
The present invention relates to equipment control technology field, in particular to a kind for the treatment of method and apparatus of unit failure.
Background technology
During unit development, in order to ensure the safe and reliable of unit, a series of failure code can be set.When event
When barrier occurs, main control part can directly cut off unit main circuit power, make unit out of service, and be filled by displays such as charactrons
Put and quote corresponding failure code, to prompt technical staff to be repaired.After failure problems exclusion, then access power supply is opened again
Start shipment row.
Although this mode can prevent the danger that failure is brought, when failure is not serious, also will directly cut
The power supply of disconnected major loop, this will cause that time loss extends and network relay service life reduces, Consumer's Experience is bad etc. and ask
The generation of topic.
In view of the above-mentioned problems, not yet propose effective solution at present.
The content of the invention
The embodiments of the invention provide a kind of processing method of unit failure, to reduce the number directly cut off the electricity supply, carries
High and network relay service life and lifting Consumer's Experience, this method include：
Determine the failure rank of unit failure；
In the case where the failure is Fisrt fault rank, cut off the electricity supply；
The failure be the second failure level it is other in the case of, do not cut off the electricity supply, using with the other failure of the second failure level
Processing mode is handled corresponding to type.
In one embodiment, the other fault type of the second failure level includes at least one of：Module high temperature,
Photovoltaic input is exceeded, input current is excessive.
In one embodiment, handled using processing mode corresponding with the other fault type of the second failure level,
Including at least one of：
The failure fault type be module high temperature in the case of, by limit or reduce compressor frequency or
Person reduces the mode of photovoltaic input power, and failure is handled；
In the case where the fault type of the failure is exceeded for photovoltaic input, by the side for reducing photovoltaic input power
Formula, failure is handled；
In the case where the fault type of the failure is excessive for input current, by limiting or reducing compressor frequency
Mode, failure is handled.
In one embodiment, the failure fault type be module high temperature in the case of, by limitation or
Reduce compressor frequency or reduce the mode of photovoltaic input power, failure is handled, including：
In the case where the fault type of the failure is module high temperature, the current mode of operation of unit is determined；
It is determined that the current mode of operation of the unit be with power mode in the case of, by limiting or reducing compressor
The mode of frequency, is handled failure；
In the case of it is determined that the current mode of operation of the unit is power generation mode, by reducing photovoltaic input power
Mode, failure is handled.
In one embodiment, the fault type of Fisrt fault rank includes at least one of：Short circuit, overvoltage.
The embodiment of the present invention additionally provides a kind of processing unit of unit failure, to reduce the number directly cut off the electricity supply,
Improve and the service life of network relay and lifting Consumer's Experience, the device include：
Determining module, for determining the failure rank of unit failure；
Module is cut off, in the case of it is determined that the failure is Fisrt fault rank, cutting off the electricity supply；
Processing module, for it is determined that the failure be the second failure level it is other in the case of, do not cut off the electricity supply, using with the
Processing mode corresponding to the other fault type of two failure levels is handled.
In one embodiment, the other fault type of the second failure level includes at least one of：Module high temperature,
Photovoltaic input is exceeded, input current is excessive.
In one embodiment, the processing module includes：
First processing units, for the fault type of the failure be module high temperature in the case of, by limitation or
Reduce compressor frequency or reduce the mode of photovoltaic input power, failure is handled；
Second processing unit, in the case where the fault type of the failure is exceeded for photovoltaic input, passing through reduction
The mode of photovoltaic input power, is handled failure；
3rd processing unit, in the case where the fault type of the failure is excessive for input current, by limiting or dropping
The mode of low compressor frequency, is handled failure.
In one embodiment, the first processing units include：
Determination subelement, in the case of be module high temperature in the fault type of the failure, determine that unit is current
Mode of operation；
First processing subelement, for it is determined that the current mode of operation of the unit be with power mode in the case of, lead to
Cross limitation or reduce the mode of compressor frequency, failure is handled；
Second processing subelement, in the case of it is determined that the current mode of operation of the unit is power generation mode, leading to
Crossing reduces the mode of photovoltaic input power, and failure is handled.
In one embodiment, the fault type of the Fisrt fault rank includes at least one of：Short circuit, mistake
Pressure.
In the above-described embodiments, according to the order of severity of unit failure, handled using different processing modes, without
It is to be shut down once failure.Solves the existing simultaneously use of network relay caused by shutdown of breaking down by this way
The technical problem that service life reduction and Consumer's Experience reduce, service life and the lifting user of effective lifting and network relay are reached
The technique effect of experience.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the method flow diagram of the processing method of unit failure according to embodiments of the present invention；
Fig. 2 is existing unit fault handling method flow chart；
Fig. 3 is the exemplary process diagram of unit fault handling method according to embodiments of the present invention；
Fig. 4 is the structured flowchart of the processing unit of unit failure according to embodiments of the present invention.
Embodiment
It is right with reference to embodiment and accompanying drawing for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is described in further details.Here, the exemplary embodiment of the present invention and its illustrate to be used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
In view of if for unit, when noncritical failure, control continues to stop without directly cut-out main circuit power
Only work, but control continuation to continue to run with, then the operational efficiency of unit can be effectively improved, extend relay use
Life-span, improve Consumer's Experience.
Based on this, in this example, there is provided a kind of processing method of unit failure, as shown in figure 1, following step can be included
Suddenly：
Step 101：Determine the failure rank of unit failure；
For example, unit can pass through AD (analog quantity is converted into digital quantity) sampling process, the numerical value for sampling acquisition is passed to
Main control chip carries out breakdown judge compared with a reference value set, according to result is made the difference, if unit does not break down,
Then continue to run with；If failure occurs in unit, failure is classified.
Step 102：In the case where failure is Fisrt fault rank, cut off the electricity supply；
Step 103：In the case of failure is other for the second failure level, do not cut off the electricity supply, using other with the second failure level
Processing mode is handled corresponding to fault type.
Wherein, Fisrt fault rank may refer to catastrophe failure, such as：The failures such as short circuit, overvoltage.Second failure rank can
To refer to noncritical failure, such as：Module high temperature, photovoltaic input exceeded, input current is excessive etc..
Specifically, being handled using processing mode corresponding with the other fault type of the second failure level, can include：
1) failure fault type be module high temperature in the case of, by limit or reduce compressor frequency or
The mode of photovoltaic input power is reduced, failure is handled；
2) in the case where the fault type of failure is exceeded for photovoltaic input, by way of reducing photovoltaic input power,
Failure is handled；
3) in the case where the fault type of failure is excessive for input current, by the side for limiting or reducing compressor frequency
Formula, failure is handled.
In the case of being module high temperature for the above-mentioned fault type in failure, by limiting or reducing compressor frequency
Rate or the mode for reducing photovoltaic input power, handle failure, can include：
S1：In the case where the fault type of failure is module high temperature, the current mode of operation of unit is determined；
S2：It is determined that the current mode of operation of unit be with power mode in the case of, by limiting or reducing compressor
The mode of frequency, is handled failure；
S3：In the case of it is determined that the current mode of operation of unit is power generation mode, by reducing photovoltaic input power
Mode, failure is handled.
The above method is illustrated with reference to a specific embodiment, it should be noted, however, that the specific implementation
Example does not form the improper restriction to the application merely to better illustrate the application.
Compressor emergency shutdown is also resulted in order to solve existing noncritical failure, the problem of influenceing complete machine operational efficiency.At this
In example, fault type is detected, noncritical failure controlled using targetedly protection, so that not serious
When failure occurs, it is controlled by limiting a series of measures such as internal working frequency, reduction power so that unit can be after
Reforwarding row, it is stopped so as to avoid directly cutting off power supply, so can not only lifts unit operation efficiency to greatest extent, is improved
Relay life, and Consumer's Experience can be substantially improved.
Specifically, by taking PV air-conditioner as an example, for input current is excessive, module temperature is too high and the occasion that is not incorporated into the power networks
Situations such as, compressor limit frequency, frequency reducing and the photovoltaic limit protection operation method such as power can be taken respectively, with reduce input current,
Module temperature, less photovoltaic input power are reduced, so as on the premise of ensuring safety, shut down operation without cutting off the electricity supply, make
Unit can realize the even running transition under different faults, improve unit operation efficiency, extend relay life,
Improve Consumer's Experience.
As shown in Fig. 2 for traditional troubleshooting process figure, unit first passes around AD sampling processes, will sample what is obtained
Numerical value is passed to main control chip compared with a reference value set, breakdown judge is carried out according to result is made the difference, if unit does not have
Break down, then continue to run with；If failure occurs in unit, major loop relay is disconnected, runs compressor emergency shutdown.
In order to ensure the reliability and safety in actual motion, can by sample be closely connected with unit it is various
Parameter, rational a reference value is set, failure is then quoted beyond a reference value, and is stopped without exception and cuts off power supply.
This mode is although simple and reliable, but if failure is noncritical failure, directly cuts off main circuit power and shut down
Operation, by the operational efficiency for being easily reduced unit, Consumer's Experience is influenceed, and unexpected power-off also can be to the crucial member such as relay
The life-span of device can impact.
As shown in figure 3, the error protection operational flow diagram provided for this example, unit first pass around AD sampling processes, will adopted
The numerical value that sample obtains is passed to main control chip compared with a reference value set, and breakdown judge is carried out according to result is made the difference, if
Unit does not break down, then continues to run with；If failure occurs in unit, failure is classified, if serious event
Barrier, then major loop relay is disconnected, runs compressor emergency shutdown；If noncritical failure, then inputted according to module high temperature, photovoltaic
The different faults types such as exceeded and input current is excessive, the protection operations such as press limit, frequency reducing, photovoltaic limit power are taken to arrange respectively
Apply so that unit smooth transition is run.
Specifically, when an error occurs, failure is classified, when failure is serious (such as：Occur short circuit, phase shortage and
The failures such as overvoltage) main circuit power is then cut off, unit is stopped, and makes unit out of danger rapidly；When there is the high reviewing knowledge already acquired of module
During barrier, compressor can be allowed to limit or reduce frequency, or photovoltaic limitation power, to reduce circulating current, reduce temperature；
When photovoltaic input is exceeded, photovoltaic input power is limited；When input current is excessive, press frequency is limited or
Reduce, unit will not be shut down because of these noncritical failures, be closed so as to improve complete machine operational efficiency, improve relay etc.
The life-span of key component.
As shown in Fig. 2 in conventional failure handling process, when sampled value is more than protection a reference value, it is bound to quote event
Barrier, and main circuit power is cut off, unit is stopped；This method is simple and reliable, and institute is faulty all to cut off the electricity supply, therefore will be former
Barrier produces dangerous possibility and is greatly reduced, but for the generation of some noncritical failures, can be handled differently completely, even
Allow unit continuous service, with lifted complete machine operational efficiency, lifting Consumer's Experience, extend the key componentses such as relay use the longevity
Life.
For caused by above-mentioned noncritical failure the problems such as compressor emergency shutdown, in this example, as shown in figure 3, when short circuit, overvoltage
When occurring etc. catastrophe failure, main circuit power, unit forced stoppage, to eliminate the danger that failure is brought conventionally are cut off
Danger；When IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) module temperature is too high
When, first, grid-connected current ir, is, it are sampled, converted by clark and park, obtained id values, work as id>When 0, judge that unit is
With power mode, current block temperature is too high to show that compressor load is excessive, therefore, sends the request of limitation press frequency, press
After receiving order, working frequency does not continue to raise；If module temperature is still too high, sending, which reduces press frequency, asks
Ask, gradually reduce compressor operation frequency, until module temperature is reduced to after zone of reasonableness the operation that affranchises again；Work as id<When 0,
It is power generation mode to judge unit, and the too high explanation photovoltaic generation power input of current block temperature is excessive, sends instruction and raises direct current
Busbar voltage, understood by MPPT (Maximum Power Point Tracking, the tracking of maximum work point) control of photovoltaic input,
With raising for DC bus-bar voltage, photovoltaic input power can progressively decline, until IGBT module temperature returns to zone of reasonableness
Untill interior；When photovoltaic input is exceeded, equally using voltage limitation power method, photovoltaic working voltage is allowed with the speed of certain frequency
Degree increase, makes working voltage close to open-circuit voltage, photovoltaic input power can be reduced gradually, until photovoltaic input power is equal to machine
Untill group maximal input；When input current is excessive, because air-conditioning is in electricity consumption mode of operation, it is therefore desirable to send compressor
Limit frequency, frequency reducing instruction, reduce load running power so that input current is reduced to normal range (NR).
By the above-mentioned means, so that unit passes through compressor frequency reducing, compressor frequency reducing, light when noncritical failure occurs
The means such as volt input limit power, continue to run with unit, can not only lift complete machine operational efficiency, extend simultaneously network relay
Deng key componentses service life, and the influence that unit operation sustained interruption can be avoided to be brought to user so that user's body
Test and be substantially improved.
Based on same inventive concept, a kind of processing unit of unit failure is additionally provided in the embodiment of the present invention, it is such as following
Embodiment described in.It is similar to the processing method of unit failure to solve the principle of problem due to the processing unit of unit failure, because
The implementation of the processing unit of this unit failure may refer to the implementation of the processing method of unit failure, repeats part and repeats no more.
Used below, term " unit " or " module " can realize the combination of the software and/or hardware of predetermined function.Although with
Device described by lower embodiment is preferably realized with software, but hardware, or the realization of the combination of software and hardware
May and it be contemplated.Fig. 4 is a kind of structured flowchart of the processing unit of the unit failure of the embodiment of the present invention, such as Fig. 4 institutes
Show, can include：Determining module 401, cut-out module 402 and processing module 403, are illustrated to the structure below.
Determining module 401, for determining the failure rank of unit failure；
Module 402 is cut off, in the case of it is determined that the failure is Fisrt fault rank, cutting off the electricity supply；
Processing module 403, for it is determined that the failure be the second failure level it is other in the case of, do not cut off the electricity supply, use
Processing mode corresponding with the other fault type of the second failure level is handled.
In one embodiment, the other fault type of the second failure level can include but is not limited at least one of：
Module high temperature, photovoltaic input is exceeded, input current is excessive.
In one embodiment, processing module 403 can include：First processing units, for the event in the failure
In the case of hindering type for module high temperature, by limiting or reducing compressor frequency or reduce the side of photovoltaic input power
Formula, failure is handled；Second processing unit, exceeded situation is inputted for photovoltaic for the fault type in the failure
Under, by way of reducing photovoltaic input power, failure is handled；3rd processing unit, in the failure classes of the failure
Type be input current it is excessive in the case of, by way of limiting or reducing compressor frequency, failure is handled.
In one embodiment, first processing units can include：Determination subelement, for the failure in the failure
In the case that type is module high temperature, the current mode of operation of unit is determined；First processing subelement, for it is determined that the machine
The current mode of operation of group be with power mode in the case of, by way of limiting or reducing compressor frequency, failure is entered
Row processing；Second processing subelement, in the case of it is determined that the current mode of operation of the unit is power generation mode, passing through
The mode of photovoltaic input power is reduced, failure is handled.
In one embodiment, the fault type of Fisrt fault rank includes at least one of：Short circuit, overvoltage.
In another embodiment, a kind of software is additionally provided, the software is used to perform above-described embodiment and preferred reality
Apply the technical scheme described in mode.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored with the storage medium, should
Storage medium includes but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
As can be seen from the above description, the embodiment of the present invention realizes following technique effect：According to unit failure
The order of severity, handled using different processing modes, rather than shut down once failure.Solve by this way existing
Once break down shut down caused by and network relay service life reduce and Consumer's Experience reduce technical problem, reach
The technique effect of the service life and lifting Consumer's Experience of effective lifting and network relay.
Obviously, those skilled in the art should be understood that each module of the above-mentioned embodiment of the present invention or each step can be with
Realized with general computing device, they can be concentrated on single computing device, or are distributed in multiple computing devices
On the network formed, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to by it
Store and performed in the storage device by computing device, and in some cases, can be to be held different from order herein
They, are either fabricated to each integrated circuit modules or will be multiple in them by the shown or described step of row respectively
Module or step are fabricated to single integrated circuit module to realize.So, the embodiment of the present invention is not restricted to any specific hard
Part and software combine.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles of the invention, made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. processing method of unit failure, it is characterised in that including：Determine the failure rank of unit failure；In the case where the failure is Fisrt fault rank, cut off the electricity supply；The failure be the second failure level it is other in the case of, do not cut off the electricity supply, using with the other fault type of the second failure level Corresponding processing mode is handled.
- 2. according to the method for claim 1, it is characterised in that the other fault type of the second failure level is included below extremely It is one of few：Module high temperature, photovoltaic input is exceeded, input current is excessive.
- 3. according to the method for claim 2, it is characterised in that using place corresponding with the other fault type of the second failure level Reason mode is handled, including at least one of：In the case where the fault type of the failure is module high temperature, by limiting or reducing compressor frequency or drop The mode of low photovoltaic input power, is handled failure；It is right by way of reducing photovoltaic input power in the case where the fault type of the failure is exceeded for photovoltaic input Failure is handled；In the case where the fault type of the failure is excessive for input current, by the side for limiting or reducing compressor frequency Formula, failure is handled.
- 4. according to the method for claim 3, it is characterised in that in the situation that the fault type of the failure is module high temperature Under, by way of limiting or reducing compressor frequency or reduce photovoltaic input power, failure is handled, including：In the case where the fault type of the failure is module high temperature, the current mode of operation of unit is determined；It is determined that the current mode of operation of the unit be with power mode in the case of, by limiting or reducing compressor frequency Mode, failure is handled；In the case of it is determined that the current mode of operation of the unit is power generation mode, by the side for reducing photovoltaic input power Formula, failure is handled.
- 5. the method according to any one of in claim 14, it is characterised in that the failure classes of the Fisrt fault rank Type includes at least one of：Short circuit, overvoltage.
- A kind of 6. processing unit of unit failure, it is characterised in that including：Determining module, for determining the failure rank of unit failure；Module is cut off, in the case of it is determined that the failure is Fisrt fault rank, cutting off the electricity supply；Processing module, for it is determined that the failure be the second failure level it is other in the case of, do not cut off the electricity supply, using with second therefore Processing mode corresponding to hindering the fault type of rank is handled.
- 7. device according to claim 6, it is characterised in that the other fault type of the second failure level is included below extremely It is one of few：Module high temperature, photovoltaic input is exceeded, input current is excessive.
- 8. device according to claim 7, it is characterised in that the processing module includes：First processing units, in the case of being module high temperature in the fault type of the failure, by limiting or reducing Compressor frequency or the mode for reducing photovoltaic input power, are handled failure；Second processing unit, for the fault type of the failure be photovoltaic input it is exceeded in the case of, by reducing photovoltaic The mode of input power, is handled failure；3rd processing unit, in the case where the fault type of the failure is excessive for input current, by limiting or reducing pressure The mode of contracting unit frequency, is handled failure.
- 9. device according to claim 8, it is characterised in that the first processing units include：Determination subelement, in the case of being module high temperature in the fault type of the failure, determine the current work of unit Pattern；First processing subelement, for it is determined that the current mode of operation of the unit be with power mode in the case of, pass through limit System or the mode for reducing compressor frequency, are handled failure；Second processing subelement, in the case of it is determined that the current mode of operation of the unit is power generation mode, passing through drop The mode of low photovoltaic input power, is handled failure.
- 10. the device according to any one of claim 6 to 9, it is characterised in that the failure classes of the Fisrt fault rank Type includes at least one of：Short circuit, overvoltage.
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| CN201710630863.0A CN107528293A (en) | 2017-07-28 | 2017-07-28 | Unit fault processing method and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110445137A (en) * | 2019-08-14 | 2019-11-12 | 珠海格力电器股份有限公司 | Fault processing method and device for AC/DC hybrid power supply system |
| CN110445145A (en) * | 2019-08-26 | 2019-11-12 | 珠海格力电器股份有限公司 | Device power control method and device and photovoltaic device system |
| CN110567139A (en) * | 2019-08-30 | 2019-12-13 | 珠海格力电器股份有限公司 | Frequency limiting and frequency reducing control method and device for photovoltaic air conditioner and photovoltaic air conditioner |
| CN112070997A (en) * | 2020-09-07 | 2020-12-11 | 沈阳亨通光通信有限公司 | Fault alarm method, device, equipment and storage medium |
| CN112606653A (en) * | 2020-12-07 | 2021-04-06 | 珠海格力电器股份有限公司 | Air conditioner fault monitoring method and device, storage medium and air conditioner |
| CN114413447A (en) * | 2022-01-24 | 2022-04-29 | 珠海格力电器股份有限公司 | Unit control method and device and photovoltaic multi-split air conditioning system |
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