CN105158697B - The method and device of energy-storage units status assessment - Google Patents
The method and device of energy-storage units status assessment Download PDFInfo
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- CN105158697B CN105158697B CN201510530742.XA CN201510530742A CN105158697B CN 105158697 B CN105158697 B CN 105158697B CN 201510530742 A CN201510530742 A CN 201510530742A CN 105158697 B CN105158697 B CN 105158697B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007257 malfunction Effects 0.000 claims abstract description 47
- 238000011156 evaluation Methods 0.000 claims abstract description 42
- 238000012545 processing Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052744 lithium Inorganic materials 0.000 abstract description 10
- 230000008439 repair process Effects 0.000 abstract description 8
- 208000032953 Device battery issue Diseases 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000036541 health Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000005315 distribution function Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The present invention provides a kind of method and device of energy-storage units status assessment, and the method includes：Obtain the probability of malfunction of energy-storage battery；The evaluation status for obtaining current energy-storage units is calculated according to the probability of malfunction；The energy-storage units are handled according to the evaluation status.Invention is for the lithium battery energy storage battery unit by same producer's battery composition, give a kind of energy-storage units state evaluating method being distributed based on battery failures binomial probability, and a kind of repair based on condition of component strategy is provided on the basis of assessment, foundation is provided for the maintenance of reasonable arrangement energy-storage battery, while improving energy-storage units overhaul efficiency, mitigate maintenance personnel's workload.
Description
Technical field
The present invention relates to energy-storage battery evaluation areas, espespecially a kind of method and device of energy-storage units status assessment.
Background technology
As wind-powered electricity generation, photovoltaic engineering are continuously increased, energy storage technology is as inhibiting generation of electricity by new energy fluctuation, intermittent
Effective means is also developed rapidly, and wherein lithium battery takes the lead in obtaining as more ripe electrochemical techniques in energy storage field
Using.Lithium battery energy storage battery power station is made of lithium battery energy storage battery unit, and energy-storage units are made of battery string formation, and battery string formation is by a large amount of
Battery series-parallel connection forms, as shown in Figure 1.Accurate to grasp energy-storage units state, the maintenance of reasonable arrangement energy-storage units is stored up for shortening
Energy equipment power off time improves maintenance personnel's working efficiency and is of great significance.
Invention content
Present invention aims at occurring for energy-storage battery failure, propose a kind of based on binomial probability distribution
The method and device of energy-storage units status assessment, and a kind of repair based on condition of component strategy is proposed on this basis, it is stored up for reasonable arrangement
It can battery maintenance offer reference.
In order to achieve the above object, the present invention specifically provides a kind of method of energy-storage units status assessment, the method includes：It obtains
Take the probability of malfunction of energy-storage battery；The assessment shape for obtaining current energy-storage units is calculated by the following formula according to the probability of malfunction
State：The energy-storage units are handled according to the evaluation status；In above formula：Pu
For the evaluation status of energy-storage units, K is all energy-storage battery sums in current energy-storage units, and y is that the energy-storage units assess shape
The energy-storage battery quantity of the prior fault of state, PbFor the probability of malfunction of energy-storage battery, C is binomial probability distribution function.
In the method for above-mentioned energy-storage units status assessment, include preferably, the probability of malfunction of the energy-storage battery passes through
Following formula obtains：In above formula：PbFor the probability of malfunction of energy-storage battery, S is the sum of energy-storage battery, x
The energy-storage battery quantity of the prior fault of probability of malfunction is calculated for the energy-storage battery.
In the method for above-mentioned energy-storage units status assessment, include preferably, the evaluation status and threshold values are compared
Compared with, according to comparison result determination the energy-storage units are overhauled or are safeguarded or do not have to overhaul plan.
The present invention also provides a kind of device of energy-storage units status assessment, described device includes：Data module, processing module
And evaluation module；The data module, the probability of malfunction for obtaining energy-storage battery and storage；The processing module is used for root
The evaluation status for obtaining current energy-storage units is calculated by the following formula according to the probability of malfunction：
The evaluation module, for according to the evaluation status, exporting the energy storage list
The processing scheme of member.
In the device of above-mentioned energy-storage units status assessment, it is preferred that the data module includes computing module；The meter
Calculate the probability of malfunction that module is used to be obtained by the following formula the energy-storage battery：In above formula：PbFor storage
The probability of malfunction of energy battery, S are the sum of energy-storage battery, and x is the energy storage for the prior fault that the energy-storage battery calculates probability of malfunction
Number of batteries.
In the device of above-mentioned energy-storage units status assessment, it is preferred that the evaluation module includes comparing module；The ratio
Module is used to the evaluation status being compared with threshold values, the energy-storage units are overhauled according to comparison result determination
Or safeguard or do not have to overhaul plan.
Energy-storage units are the most important equipment of energy-accumulating power station, accurate to grasp energy-storage units state, reasonable arrangement energy-storage units
Repair schedule mitigates maintenance personnel's workload and is of great significance for improving energy-storage units overhaul efficiency.The present invention be directed to by
The lithium battery energy storage battery unit of same producer's battery composition gives a kind of energy storage list being distributed based on battery failures binomial probability
First state evaluating method, and a kind of repair based on condition of component strategy is provided on the basis of assessment, it is overhauled for reasonable arrangement energy-storage battery
Provide foundation.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, not
Constitute limitation of the invention.In the accompanying drawings：
Fig. 1 is existing energy-storage units schematic diagram；
Fig. 2 is the flow diagram of the method for energy-storage units status assessment provided by the present invention；
Fig. 3 is the structural schematic diagram of the device of energy-storage units status assessment provided by the present invention.
Specific implementation mode
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to embodiment and attached
Figure, is described in further details the present invention.Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention,
But it is not as a limitation of the invention.
The present invention specifically provides a kind of method of energy-storage units status assessment, specifically please refers to Fig.2 shown, the method packet
Contain：S101 obtains the probability of malfunction of energy-storage battery；S102 is calculated by the following formula the current storage of acquisition according to the probability of malfunction
The evaluation status of energy unit：S103 is according to the evaluation status to the energy-storage units
It is handled；In above formula：PuFor the evaluation status of energy-storage units, K is all energy-storage battery sums, y in current energy-storage units
For the energy-storage battery quantity of the prior fault of the energy-storage units evaluation status, PbFor the probability of malfunction of energy-storage battery, C is binomial
Probability-distribution function.
In the method for above-mentioned energy-storage units status assessment, the probability of malfunction of the energy-storage battery is obtained by following formula
：In above formula：PbFor the probability of malfunction of energy-storage battery, S is the sum of energy-storage battery, and x is the energy storage
Battery calculates the energy-storage battery quantity of the prior fault of probability of malfunction.In the above-described embodiments, after obtaining the evaluation status, work
Making personnel can be compared the evaluation status with threshold values, according to comparison result determine to the energy-storage units carry out maintenance or
Safeguard or do not have to overhaul plan.
Appraisal procedure, which is applied to, has preferable Evaluated effect in real work, done briefly with a specific example below
Bright, relevant technical staff in the field is when it is found that following only example is only the appraisal procedure that the present invention is more clearly explained, being not intended as
Limitation of the present invention；The appraisal procedure provided through the invention, relevant technical staff in the field calculate same producer's storage first
The probability of malfunction P of energy batteryb, such as currently need the battery failures probability for the affiliated manufacturer of battery detected；Then according to battery
Probability of malfunction Pb, further calculate the probability of malfunction P of energy-storage unitsu, finally according to energy-storage units probability of malfunction PuTo energy-storage units
State is assessed, and executes corresponding Strategies of Maintenance, and specific estimation flow is as follows：
Assuming that there are a N platform lithium battery energy storage battery units in energy-accumulating power station producer, every energy-storage units have a M group battery string formations, every group
Battery string formation is made of L battery series-parallel connection, then the total S of producer's energy-storage battery is N × M × L, if the producer is at the T moment
The battery overhauled before is x, then probability of malfunction such as formula 1 of the producer's energy-storage battery at the T moment.Due to energy-accumulating power station battery
Quantity S is generally at 10000 or more, therefore, it is considered that the probability of single cell malfunctions of the producer is also Pb。
Since the probability of same producer's cell malfunctions is identical and mutual indepedent when cell malfunctions, if energy storage
The failure of unit is mainly determined by battery failures, then the energy-storage units for containing K=M × L battery, when the T moment it
When the battery of preceding energy-storage units maintenance is y, the probability which breaks down at the T moment should meet binomial point
Cloth calculates such as formula 2.
When the probability P that energy-storage units failure occursuReach the lithium battery energy storage battery location mode assessment result and maintenance plan of table 1
Specified in slightly when threshold value, the states of energy-storage units is assessed as health, inferior health, serious, severe respectively, and executes accordingly
Strategies of Maintenance.
Table 1
| Probability of malfunction threshold value (%) | Less than a | A~b | B~c | D or more |
| Condition evaluation results | Health | Inferior health | Seriously | Badly |
| Repair based on condition of component strategy | Normal operation | Reinforce making an inspection tour | It is overhauled when periodic maintenance | Interruption maintenance immediately |
The present invention also provides a kind of device of energy-storage units status assessment, shown, described device packet is specifically please referred to Fig.3
Contain：Data module 201, processing module 202 and evaluation module 203；The data module 201, the event for obtaining energy-storage battery
Barrier probability simultaneously stores；The processing module 202 obtains current energy storage for being calculated by the following formula according to the probability of malfunction
The evaluation status of unit：The evaluation module 203 is used for according to the evaluation status,
Export the processing scheme of the energy-storage units.
In the above-described embodiments, the data module 201 can be a database or other memories, for be examined all
After the battery failures probability storage of the generation manufacturer of the energy-storage battery of survey, calculated in real time for post-processing module.The processing mould
Block can be that a chip with computing capability can be according to above-mentioned assessment after typing present battery detects prior fault number of batteries
The calculation formula of state obtains the probability of malfunction of current energy-storage units, and the evaluation status of the energy-storage units is obtained with this.
Further, the data module 201 includes computing module；The computing module by following formula for being obtained
Take the probability of malfunction of the energy-storage battery：In above formula：PbFor the probability of malfunction of energy-storage battery, S is energy storage
The sum of battery, x are the energy-storage battery quantity for the prior fault that the energy-storage battery calculates probability of malfunction.
In the above-described embodiments, the evaluation module 203 includes comparing module；The comparing module is used for the assessment
State is compared with threshold values, and according to comparison result determination the energy-storage units are overhauled or safeguarded or do not had to maintenance department
Reason；Relevant technical staff in the field's above-mentioned comparing module known to also can be integrated into a microprocessor with the evaluation module.
Energy-storage units are the most important equipment of energy-accumulating power station, accurate to grasp energy-storage units state, reasonable arrangement energy-storage units
Repair schedule mitigates maintenance personnel's workload and is of great significance for improving energy-storage units overhaul efficiency.The present invention be directed to by
The lithium battery energy storage battery unit of same producer's battery composition gives a kind of energy storage list being distributed based on battery failures binomial probability
First state evaluating method, and a kind of repair based on condition of component strategy is provided on the basis of assessment, it is overhauled for reasonable arrangement energy-storage battery
Provide foundation；It is multiple below that above-mentioned apparatus for evaluating is described briefly with a specific example：
Certain energy-accumulating power station has 12 Z producers lithium battery energy storage battery units, every energy-storage units to have 6 groups of battery string formations, every group of electricity
Pond string formation is made of 1224 battery series-parallel connections, then the sum of producer's energy-storage battery is 88128, and Z producers are in May, 2015
The battery overhauled before 1 day is 100, and staff can first pass through above-mentioned computing module and obtain producer's energy-storage battery 2015
The probability of malfunction on May 1, in is 100 88128 × 100%=0.1135% of ÷.And the probability of malfunction is stored to data mould
In block.
Z producers energy-storage units probability of malfunction threshold value (the Z producers lithium battery energy storage battery of table 2 stored in by evaluation module
Location mode assesses threshold value), then the condition evaluation results of C001 energy-storage units are serious, then notify staff in periodic maintenance
The energy-storage units are overhauled in Shi Jinhang integrated testabilities.
Table 2
| Probability of malfunction threshold value (%) | Less than 5 | 5~10 | 10~15 | 15 or more |
| Condition evaluation results | Health | Inferior health | Seriously | Badly |
| Repair based on condition of component strategy | Normal operation | Reinforce making an inspection tour | It is overhauled when periodic maintenance | Interruption maintenance immediately |
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection domain of invention.
Claims (2)
1. a kind of method of energy-storage units status assessment, which is characterized in that the method includes：
Obtain the probability of malfunction of energy-storage battery；
The evaluation status for obtaining current energy-storage units is calculated by the following formula according to the probability of malfunction：
The energy-storage units are handled according to the evaluation status；
In above formula：PuFor the evaluation status of energy-storage units, K is all energy-storage battery sums in current energy-storage units, and y is described
The energy-storage battery quantity of the prior fault of energy-storage units evaluation status, PbFor the probability of malfunction of energy-storage battery, C is binomial probability point
Cloth function；
It is described according to the evaluation status to the energy-storage units carry out processing include：The evaluation status is compared with threshold values
Compared with, according to comparison result determination the energy-storage units are overhauled or are safeguarded or do not have to overhaul plan；The energy-storage battery
Probability of malfunction is obtained by following formula：
In above formula：PbFor the probability of malfunction of energy-storage battery, S is the sum of energy-storage battery, and x is that the energy-storage battery calculates failure
The energy-storage battery quantity of the prior fault of probability.
2. a kind of device of energy-storage units status assessment, which is characterized in that described device includes：Data module, processing module and
Evaluation module；
The data module, the probability of malfunction for obtaining energy-storage battery and storage；
The processing module, for being calculated by the following formula the assessment shape for obtaining current energy-storage units according to the probability of malfunction
State：
The evaluation module, for according to the evaluation status, exporting the processing scheme of the energy-storage units；The evaluation module
Including comparing module；The comparing module is for the evaluation status to be compared with threshold values, according to comparison result determination pair
The energy-storage units are overhauled or are safeguarded or do not had to overhaul plan；
In above formula：PuFor the evaluation status of energy-storage units, K is all energy-storage battery sums in current energy-storage units, and y is described
The energy-storage battery quantity of the prior fault of energy-storage units evaluation status, PbFor the probability of malfunction of energy-storage battery, C is binomial probability point
Cloth function；The data module includes computing module；The computing module is for being obtained by the following formula the energy-storage battery
Probability of malfunction：
In above formula：PbFor the probability of malfunction of energy-storage battery, S is the sum of energy-storage battery, and x is that the energy-storage battery calculates failure
The energy-storage battery quantity of the prior fault of probability.
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