CN108631348A - Energy-accumulating power station control method based on energy-storage units status assessment - Google Patents
Energy-accumulating power station control method based on energy-storage units status assessment Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06312—Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06315—Needs-based resource requirements planning or analysis
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/80—Management or planning
- Y02P90/82—Energy audits or management systems therefor
Abstract
This disclosure relates to a kind of energy-accumulating power station control method based on energy-storage units status assessment, including：The first monitoring information that energy conversion system PCS is uploaded is screened, the first parameter information is obtained；The second monitoring information that battery management system BMS is uploaded is screened, the second parameter information is obtained；Energy-storage units are assessed according to the current value of the second parameter information, determine the current state assessment result of energy-storage units；According to current state assessment result and/or historic state assessment result, determine that the operating status of energy-storage units adjusts priority；Priority and the complete Charge/Discharge Cycles of energy-storage units are adjusted according to operating status, determines the charge/discharge priority of energy-storage units；If in the state of determining that energy-storage units are in adjustable according to the first parameter information, charge/discharge is carried out to energy-storage units according to the charge/discharge priority of the energy-storage units.The disclosure extends battery life, improves the stability of energy-accumulating power station operation.
Description
Technical field
This disclosure relates to the control field of energy-accumulating power station more particularly to a kind of energy storage electricity based on energy-storage units status assessment
Stand control method.
Background technology
Energy storage is as a kind of existing technological means that can ensure electric power netting safe running, the application of energy-accumulating power station, for answering
Weight is played to caused operation uncertainty after the peak load shifting of power grid, and inhibition power grid access new energy power station etc.
The effect wanted.And the stable operation of energy-accumulating power station is to play the precondition of its effect, so improving energy-accumulating power station operation
Reliability, safety and reasonability are the main problem for needing to solve at present.
Currently, for energy-storage units, such as the research work of energy-storage battery operating status assessment has very much.Main research side
To state-of-charge assessment, the analysis of consistency of battery pack, battery voltage ripple influence and the battery health shape for energy-storage battery
The method of state assessment etc., application mainly has based on SOC-OCV (State of Charge-Open circuit voltage) songs
The fuel cell modelling method that the Kalman filtering of line carries out, GA-BP (genetic algorithm-Error Back
Propagation) neural fusion SOC (State of Charge) state evaluating method, and pass through cell voltage standard
Coefficient, SOE (State Of Energy) is very poor, cell voltage is very poor etc., and multi objectives system carries out energy-storage battery operating status comments
Estimate.Though the method for assessment is more, how using the operating status of the energy-storage battery of assessment as energy-accumulating power station adjusting foundation, simultaneously
The research that adjustment process can optimize cell operating lifetime to greatest extent again is an even more important problem.
Invention content
In view of this, the present disclosure proposes a kind of energy-accumulating power station control methods based on energy-storage units status assessment.Pass through
It is preferential that the current state assessment result combination historic state assessment result of energy-storage units determines that the operating status of energy-storage units is adjusted
Grade, by the current state assessment result of energy-storage units and historic state assessment result in the adjusting of energy-storage units so that storage
The battery utilization rate raising in energy power station, longer cell life, further improve the stability of energy-accumulating power station operation.
According to the one side of the disclosure, a kind of energy-accumulating power station control method based on energy-storage units status assessment is provided,
Including：
The first monitoring information that energy conversion system PCS is uploaded is screened, the first parameter information is obtained；
The second monitoring information that battery management system BMS is uploaded is screened, the second parameter information is obtained；
Energy-storage units are assessed according to the current value of second parameter information, determine the current state of energy-storage units
Assessment result；
According to the current state assessment result and/or historic state assessment result, the operating status of energy-storage units is determined
Adjust priority；
Priority and the complete Charge/Discharge Cycles of the energy-storage units are adjusted according to the operating status, determines energy-storage units
Charge/discharge priority；
If in the state of determining that the energy-storage units are in adjustable according to first parameter information, according to
The charge/discharge priority of energy-storage units carries out charge/discharge to the energy-storage units.
In one possible implementation, this method further includes：
According to the quantity of the PCS, energy-accumulating power station is divided into multiple energy-storage units, wherein the number of the energy-storage units
Amount is identical as the quantity of the PCS.
In one possible implementation, first parameter information include it is following in it is one or more：
Circuit operation information, the PCS of transformer station high-voltage side bus information, outlet and inlet wire receive energy-accumulating power station scheduling system and issue
Target power instruction.
In one possible implementation, second parameter information include it is following in it is one or more：
Voltage, temperature, state-of-charge SOC, the health status SOH of accumulator.
In one possible implementation, energy-storage units are commented according to the current value of second parameter information
Estimate, determines the current state assessment result of energy-storage units, including：
Periodically obtain the current value of second parameter information；
According to the current value of each parameter in second parameter information, the corresponding parameter evaluation grade of each parameter is obtained；
According to the parameter evaluation grade current state assessment of energy-storage units is calculated using Weighted Fuzzy operation rule
Grade；
According to the current state evaluation grade of the energy-storage units, the current state assessment result of energy-storage units is determined.
In one possible implementation, described according to the parameter evaluation grade, using Weighted Fuzzy operation rule,
Determine the current state evaluation grade of energy-storage units, including：
When parameter evaluation result if there is the corresponding energy-storage units of parameter evaluation grade is default result, it is determined that storage
The current state evaluation grade of energy unit is the parameter evaluation grade；
When parameter evaluation result if there is no the corresponding energy-storage units of parameter evaluation grade is default result, then calculate
The mean value is determined as the current state evaluation grade of the energy-storage units by the mean value of the weighted sum of each parameter evaluation grade.
In one possible implementation, this method further includes：
Obtain nearest N days condition evaluation results of energy-storage units, wherein N is positive integer；
According to nearest N days condition evaluation results of the energy-storage units, nearest N days shapes of the energy-storage units are obtained
State evaluation grade；
Nearest N days status assessment grades of the energy-storage units are weighted, historic state assessment etc. is obtained
Grade；
According to the historic state evaluation grade, the historic state assessment result of energy-storage units is determined.
In one possible implementation, according to the current state assessment result and/or historic state assessment result,
Determine that the operating status of energy-storage units adjusts priority, including：
According to the current state assessment result and historic state assessment result, the current state of energy-storage units is obtained respectively
Evaluation grade and historic state evaluation grade；
Compare the current state evaluation grade of each energy-storage units；
For the different energy-storage units of current state evaluation grade, the lower energy-storage units of current state evaluation grade correspond to
Operating status adjust priority it is higher；
Energy-storage units identical for current state evaluation grade, the lower energy-storage units of historic state evaluation grade correspond to
Operating status adjust priority it is higher.
In one possible implementation, priority is adjusted according to the operating status and the energy-storage units is complete
Charge/Discharge Cycles determine the charge/discharge priority of energy-storage units, including：
If the operating status of energy-storage units adjusts priority and is different from, the operating status of energy-storage units is adjusted
Priority is determined as the charge/discharge priority of energy-storage units；
The identical energy-storage units of priority are adjusted if there is operating status, then it is identical to obtain operating status adjusting priority
Energy-storage units Charge/Discharge Cycles；
The operating status of the less energy-storage units of Charge/Discharge Cycles is adjusted into priority and is adjusted to higher priority；
Operating status after adjustment is adjusted into the charge/discharge priority that priority is determined as energy-storage units.
In one possible implementation, if according to first parameter information determine the energy-storage units be in can
The state of adjusting then carries out charge/discharge according to the charge/discharge priority of the energy-storage units to the energy-storage units, including：
Determine whether the adjustment state of energy-storage units is adjusted according to corresponding first parameter information of energy-storage units；
If energy-storage units are in adjustable state, according to the charge/discharge priority orders of the energy-storage units, to energy storage
Unit carries out charge/discharge；
If it is determined that the energy-storage units in adjustable state entirely reach fully charged/limit value for discharging completely, then control
It makes and average charge/electric discharge is carried out to the energy-storage units of normal operating condition；
Wherein, the energy-storage units of the normal operating condition refer to that there is no overcharge or the energy storage of over-discharge in the recent period
Unit.
The operation of energy-storage units is determined by the current state assessment result combination historic state assessment result of energy-storage units
Status adjustment priority, and determine according to the complete Charge/Discharge Cycles of energy-storage units the charge/discharge priority of energy-storage units, root
Charge/discharge is carried out to energy-storage units according to charge/discharge priority, according to the energy storage electricity based on energy-storage units status assessment of the disclosure
Stand control method can make full use of the condition evaluation results of energy-storage units that energy-storage units are adjusted so that energy-accumulating power station
Battery utilization rate improve, longer cell life, further improve energy-accumulating power station operation stability.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the other feature and aspect of the disclosure will become
It is clear.
Description of the drawings
Including in the description and the attached drawing of a part for constitution instruction and specification together illustrate the disclosure
Exemplary embodiment, feature and aspect, and for explaining the principles of this disclosure.
Fig. 1 shows the energy storage electricity according to the battery control method based on energy-storage units status assessment of one embodiment of the disclosure
It stands schematic network structure.
Fig. 2 shows the streams according to the energy-accumulating power station control method based on energy-storage units status assessment of one embodiment of the disclosure
Cheng Tu.
Fig. 3 shows the flow chart of the method for the step S13 according to one embodiment of the disclosure.
Fig. 4 shows the flow chart of the method for the step S133 according to one embodiment of the disclosure.
Fig. 5 shows the stream of the energy-accumulating power station control method based on energy-storage units status assessment according to one embodiment of the disclosure
Cheng Tu.
Fig. 6 shows the flow chart of the method for the step S14 according to one embodiment of the disclosure.
Fig. 7 shows the flow chart of the method for the step S15 according to one embodiment of the disclosure.
Specific implementation mode
Various exemplary embodiments, feature and the aspect of the disclosure are described in detail below with reference to attached drawing.It is identical in attached drawing
Reference numeral indicate functionally the same or similar element.Although the various aspects of embodiment are shown in the accompanying drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the disclosure, numerous details is given in specific implementation mode below.
It will be appreciated by those skilled in the art that without certain details, the disclosure can equally be implemented.In some instances, for
Method, means, element and circuit well known to those skilled in the art are not described in detail, in order to highlight the purport of the disclosure.
Fig. 1 shows the energy storage electricity according to the battery control method based on energy-storage units status assessment of one embodiment of the disclosure
It stands schematic network structure.
Energy-accumulating power station can be divided into multiple energy storage lists according to energy conversion system PCS (Power Convert System)
Energy-accumulating power station can be divided into multiple energy-storage units by member according to the quantity of the PCS in one possible implementation,
Wherein, the quantity of the energy-storage units can be identical with the quantity of the PCS.
As shown in Figure 1, for example energy-accumulating power station includes 10 PCS, energy-accumulating power station can be divided into 10 energy-storage units, often
A energy-storage units include a PCS, battery management system BMS (Battery Management System), an electric power storage
Pond group and a transforming plant lead-in circuit.Wherein, a PCS in each energy-storage units, a BMS, an accumulator group
In one-to-one relationship, and a transforming plant lead-in circuit can correspond to multiple energy-storage units.One accumulator group can be with
Including multiple accumulators, such as including 3 accumulators, as shown in Figure 1.
In one example, can also include a transforming plant lead-in circuit in the energy-storage units, in an energy storage list
In member, the PCS can be with an accumulator group, a transforming plant lead-in connection, inlet wire circuit as shown in Figure 1：Line
Road 1 and circuit 2, the BMS can be connect with an accumulator group.
Optionally, the PCS can also be connect with the scheduling system of transformer, substation's outlet circuit, energy-accumulating power station.
Can also include monitoring device and server, the prison as shown in Figure 1, in the network structure of the energy-accumulating power station
Control equipment and server can be connect with PCS and BMS, if shown in 1, monitoring device may include two monitoring host computers, prison
Control host 1 and monitoring host computer 2 can be used for being monitored the energy-storage units, and monitoring host computer 1 and monitoring host computer 2 can be with
The information obtained according to monitoring carries out assessment to the state of energy-storage units and obtains assessment result, and using the assessment result to storage
Energy power station is controlled.The server can be a history server, can be used for storing the monitoring information of monitoring device.
Wherein, the disclosure is not construed as limiting the number of units of monitoring host computer and server.
Fig. 2 shows the streams according to the energy-accumulating power station control method based on energy-storage units status assessment of one embodiment of the disclosure
Cheng Tu.
Step S11, the first monitoring information that screening energy conversion system PCS is uploaded, obtains the first parameter information.
Due to that may include the information such as some parameters of energy-storage units operation, such as transformer shelves in the first monitoring information
Position, temperature, electric voltage frequency etc., these information are not used in the control of the status assessment and energy-accumulating power station of energy-storage units, can
To be filtered out from the first monitoring information first and relevant first parameter information of energy-storage units, wherein the first parameter information can
Be in the first monitoring information with it is one or more in the relevant parameter of energy-storage units.First parameter information can be used for
In the control of the status assessment and energy-accumulating power station of the energy-storage units.
In one possible implementation, can carry out in real time it is described screening, can also periodically carry out it is described screening,
Or can also be screened when needing to use the first parameter information, the disclosure is not construed as limiting the opportunity of screening.
For example, as shown in Figure 1, in controlling energy-accumulating power station, monitoring device can obtain first by PCS
Parameter information.For example, the PCS can upload the first monitoring information, first monitoring information may include and energy-storage units
Related parameter information, such as the switch tool position of inlet wire circuit, the voltage of inlet wire circuit, transformer shelves in energy-storage units
Position, temperature and electric voltage frequency etc..Monitoring device can carry out first monitoring information when PCS uploads the first monitoring information
Screening, filter out with relevant first parameter information of energy-storage units, for example, filtering out the voltage of inlet wire circuit.
Alternatively, first monitoring information can be stored in server, monitoring device can search in the server
The first monitoring information needed, and the first monitoring information is screened, it filters out and believes with relevant first parameter of energy-storage units
Breath.
In one example, monitoring device can periodically acquire the first monitoring information of PCS uploads, such as with first
Period distances acquire the first monitoring information that PCS is uploaded, and since PCS data amount is less, can be arranged between the period 1 and be divided into 1 second
Or 2 seconds, then the first monitoring information that PCS is uploaded is cached every the period 1, when caching can refresh a upper period
First monitoring information of caching
It is alternatively possible to periodically the first monitoring information is stored, such as with described in second round interval storage
First monitoring information, wherein second round interval can be more than period 1 interval.The second round interval could be provided as
30 seconds etc., the disclosure was not construed as limiting this.For example, can according to second round interval need store the first monitoring information when,
The first monitoring information can be obtained from caching, and the first monitoring information obtained from caching and the acquisition association in time are stored
In the server.
Step S12, the second monitoring information that screening battery management system BMS is uploaded, obtains the second parameter information.
In controlling energy-accumulating power station, monitoring device can obtain the second parameter information by BMS.For example, described
BMS can upload the second monitoring information, and monitoring device pair the second monitoring information can be carried out when BMS uploads the second monitoring information
Screening, or can also first by the storage of the second monitoring information in the server, monitoring device can search the in the server
Two monitoring informations, then the second monitoring information found is screened.
In one possible implementation, can carry out in real time it is described screening, can also periodically carry out it is described screening,
Or it can also be screened when needing to use the first parameter information.
Second monitoring information may include with the relevant parameter information of accumulator in energy-storage units, for example, electric power storage
The voltage in pond, the self-test information etc. of temperature, output power, accumulator, the second monitoring information of monitoring device pair are screened, screening
Go out the voltage etc. with relevant second parameter information of energy-storage units, such as accumulator.Wherein, the second parameter information can be second
In monitoring information with it is one or more in the relevant parameter of energy-storage units.As long as second parameter information can be used for institute
The control of energy-accumulating power station is stated, the particular content of the second parameter information of the disclosure pair is not construed as limiting.
In one example, monitoring device can periodically acquire the second monitoring information of BMS uploads, such as with third
Period distances acquire the second monitoring information that BMS is uploaded, and since BMS data volumes are less, can be arranged between the period 3 and be divided into 5 seconds
Or 10 seconds, then the second monitoring information that BMS is uploaded is cached every the period 3, when caching can refresh a upper period
Second monitoring information of caching.
Wherein, period 3 interval can be more than period 1 interval.
It is alternatively possible to periodically the second monitoring information is stored, such as with described in period 4 interval storage
Second monitoring information, wherein period 4 interval can be more than period 3 interval.The period 4 interval could be provided as
30 seconds etc., the disclosure was not construed as limiting this.For example, can according to period 4 interval need store the second monitoring information when,
The second monitoring information can be obtained from caching, and the second monitoring information obtained from caching and the acquisition association in time are stored
In the server.
It should be noted that if first monitoring information and the second monitoring information include the position of the switch, alert and touch
The information such as hair can refresh according to the displacement moment and store the first monitoring information and the second monitoring information, wherein the displacement moment can
To be the variation moment of energy-accumulating power station operating status, such as energy-accumulating power station normal operating condition is set as 0, irregular operating state
Be set as 1, the displacement moment can refer to from 0 become 1 at the time of, or from 1 become 0 at the time of；It is adjusted if recorded including such as PCS
The remote regulating amount information such as target active power, target voltage instruction that degree system issues, can issue according to instruction and refresh constantly simultaneously
Store the first monitoring information and the second monitoring information.
Step S13 assesses energy-storage units according to the current value of second parameter information, determines energy-storage units
Current state assessment result.
The current state assessment result of the energy-storage units can be normal, abnormal two kinds, can also be well, just
Often, abnormal three kinds, the disclosure is not construed as limiting this, as long as the assessment result that can divide clear different current state can
With.
The second parameter information can be obtained from the second monitoring information, from the second parameter information, obtain the second parameter letter
Then the current value of breath assesses energy-storage units according to the current value of the second parameter information of acquisition, determines energy-storage units
Current state assessment result.For example, normal value (or the normal value of each parameter in the second parameter information can be pre-set
Range), it can be determined that whether each parameter in second parameter is identical as corresponding normal value (or to fall model in normal value
In enclosing), if all identical (or whole parameters are fallen in the range of normal value), it is determined that the current state of energy-storage units is commented
It is normal to estimate result；If differed there are any one parameter and its normal value in the second parameter information (or do not fall within
In the range of normal value), it is determined that the current state assessment result of energy-storage units is abnormal.Alternatively, number can also be arranged
Threshold value, if being present in the parameter that normal value differs (or do not fall within normal value in the range of) in the second parameter information
Number is more than number threshold value, it is determined that the current state assessment result of energy-storage units is abnormal.
After determining the current state assessment result of energy-storage units, the current state of the energy-storage units can also be assessed
As a result it is stored.
Step S14 determines energy-storage units according to the current state assessment result and/or historic state assessment result
Operating status adjusts priority.
The height of priority can be adjusted according to the good job sequence of current state assessment result, setting operating status.Citing
For, can according to the current state assessment result, such as current state assessment result be it is good, normal, abnormal, can be with
The operating status that current state assessment result is good energy-storage units is adjusted into priority and is set as highest, operating status is adjusted
The energy-storage units of highest priority can be adjusted preferentially, such as charge/discharge is adjusted.Can be just by current state assessment result
The operating status of normal energy-storage units adjusts priority and is set as time height, is abnormal energy storage list by current state assessment result
The operating status of member adjusts priority and is set as minimum.
If there is energy-storage units current state assessment result it is identical when, before can obtaining energy-storage units current time
The condition evaluation results of storage are as historic state assessment result, for example, multiple hours or more before can obtaining current time
It condition evaluation results, if it is abnormal to exist in historic state assessment result once, by corresponding energy-storage units
Operating status adjusts priority and is adjusted to relatively low, if exist in historic state assessment result it is primary be it is good, will be corresponding
The operating status of energy-storage units adjusts priority and is adjusted to higher.
Step S15 adjusts priority and the complete Charge/Discharge Cycles of the energy-storage units according to the operating status, determines
The charge/discharge priority of energy-storage units.
Operating status can be adjusted to the energy-storage units that priority is higher, the complete Charge/Discharge Cycles of energy-storage units are fewer
Charge/discharge priority is arranged higher, wherein the charge/discharge priority of energy-storage units is higher, then can preferentially be carried out by control
Charge/discharge.
Step S16 determines that the energy-storage units are in adjustable state, then basis according to first parameter information
The charge/discharge priority of the energy-storage units carries out charge/discharge to the energy-storage units.
It can determine that energy-storage units are in operating status according to the first parameter information, it is determined that the energy-storage units are in
Adjustable state can carry out charge/discharge according to the charge/discharge priority of the energy-storage units to the energy-storage units.
If it is determined that the energy-storage units are in uncontrollable state, then charge/discharge is not carried out to the energy-storage units.
Alternatively it is also possible to after the step S11, according to first parameter information, the energy-storage units are determined
In adjustable state, then carry out step S12.
The operation of energy-storage units is determined by the current state assessment result combination historic state assessment result of energy-storage units
Status adjustment priority, and determine according to the complete Charge/Discharge Cycles of energy-storage units the charge/discharge priority of energy-storage units, root
Charge/discharge is carried out to energy-storage units according to charge/discharge priority, according to the energy storage electricity based on energy-storage units status assessment of the disclosure
Stand control method can make full use of the condition evaluation results of energy-storage units that energy-storage units are adjusted so that energy-accumulating power station
Battery utilization rate improve, longer cell life, further improve energy-accumulating power station operation stability.
In one possible implementation, first parameter information may include it is following in it is one or more：
Circuit operation information, the PCS of transformer station high-voltage side bus information, outlet and inlet wire receive energy-accumulating power station scheduling system and issue
Target power instruction etc..Wherein, transformer station high-voltage side bus information may include power, voltage, electric current of transformer etc..Outlet and into
The circuit operation information of line may include power, voltage, electric current, position of the switch of circuit etc..PCS receives energy-accumulating power station scheduling
The target power instruction that system issues may include active, the target voltage instruction of target etc. that scheduling system issues.
In one possible implementation, second parameter information include it is following in it is one or more：
Voltage, temperature, state-of-charge SOC, health status SOH (State-of-Health) of accumulator etc..
Fig. 3 shows the flow chart of the method for the step S13 according to one embodiment of the disclosure.As shown in figure 3, in a kind of possibility
Realization method in, step S13 assesses energy-storage units according to the current value of second parameter information, determines energy storage
The current state assessment result of unit may include：
Step S131 periodically obtains the current value of second parameter information.
If what is stored in server is the second parameter information, monitoring device can be periodically from the second parameter of storage
Current value is obtained in information.If what is stored in server is the second monitoring information, monitoring device can periodically obtain
Then the current value of two monitoring informations filters out the current value of the second parameter information from the current value of the second monitoring information.Its
In, the period distances for periodically obtaining the current value of the second parameter information can be period 5 interval, between the period 5
Every the period 4 interval can be more than, for example, period 5 interval can be 1 minute.Second parameter information is worked as
Preceding value can be that distance obtains the second nearest parameter information of moment in storage.
Step S132 obtains the corresponding parameter of each parameter according to the current value of each parameter in second parameter information
Evaluation grade.
Table 1 is parameter evaluation range table can pre-set each parameter evaluation grade and each parameter is commented as shown in table 1
The corresponding each range of parameter values of grade is estimated, for example, the corresponding voltage value of different evaluation grades can be arranged for voltage parameter
Range, voltage evaluation grade can be grade 0-3, and corresponding range of voltage values may include：Normal range (NR), abnormal range,
Abnormal ranges and severely subnormal range etc., for example, a reference value of voltage can be 220,0 corresponding normal range (NR) of grade
Can be [215,225] that the corresponding abnormal range of grade 1 can be [210,215) and (225,230], and grade 2 is corresponding different
Often may range from [205,210) and (230,235], corresponding grade 3 is other (voltage value is less than 205 or more than 235)
It is severely subnormal range.Above is only an example of the disclosure.
The corresponding parameter evaluation of parameter evaluation grade can also be pre-set as a result, for example, normal, abnormal, abnormal, tight
Weight exception etc., corresponding grade is grade 0-3 from low to high respectively, and the table 1 can store in the server.It can also be arranged more
More grades, the disclosure are not construed as limiting this.
Alternatively it is also possible to the different state of energy-storage units be corresponded to according to the different range of each parameter value, by each parameter value
Range be divided into multiple small ranges, multiple small range corresponds to multiple states of energy-storage units, can also give multiple shapes
Multiple corresponding grades are arranged in state, wherein the multiple state can refer to parameter evaluation as a result, for example, it is normal, abnormal,
Abnormal, severely subnormal, multiple corresponding grades can refer to corresponding parameter evaluation grade, for example, corresponding to respectively from low to high
For grade 0-3.It can be by multiple small ranges of each parameter value parameter evaluation grade corresponding with multiple small ranges of each parameter value
It is stored with parameter evaluation result, for example, being stored in the server in the form of table 1.
Can be according to each parameter current value in the second parameter information, such as the voltage of battery, temperature, SOC and SOH are worked as
Preceding value obtains the corresponding parameter evaluation grade of each parameter by searching for table 1.
1 parameter evaluation range table of table
Step S133 determines the current of energy-storage units according to the parameter evaluation grade using Weighted Fuzzy operation rule
Status assessment grade.
It can be using the highest level in each parameter evaluation grade in the second parameter information as the current shape of energy-storage units
State evaluation grade, alternatively, can also will be in each parameter evaluation grade in the second parameter information time high-grade be used as energy storage list
The current state evaluation grade of member.Or it can also be by the highest and time height in each parameter evaluation grade in the second parameter information
Parameter evaluation grade be weighted, determine the current state evaluation grade of energy-storage units.
Step S134 determines that the current state of energy-storage units is commented according to the current state evaluation grade of the energy-storage units
Estimate result.
It can be according to the corresponding of the current state assessment result of the current state evaluation grade and energy-storage units of energy-storage units
Relationship obtains storage corresponding with the current state evaluation grade of energy-storage units for example, the correspondence can be searched by table 1
The current state assessment result of energy unit.
Since the current value of the second parameter periodically acquires, so the current state assessment knot of the energy-storage units determined
Fruit is also periodic, which can be identical as the period 5 interval, such as energy storage list of determination per minute
The current state assessment result of member.
Optionally, periodical storage can also be carried out to the current state assessment result of energy-storage units, such as is united for 15 minutes
The current state assessment result in a current period is counted, current state evaluation grade in the period can be selected highest current
Condition evaluation results of the condition evaluation results as current period, by the condition evaluation results and energy-storage units, period indication into
Row associated storage, alternatively, the condition evaluation results and status assessment grade, energy-storage units, period indication can also be closed
Connection storage.
Wherein, at the beginning of the period indication can be the period or the end time, or can also be number, this
It is open that this is not construed as limiting.
Fig. 4 shows the flow chart of the method for the step S133 according to one embodiment of the disclosure.In a kind of possible realization side
In formula, as shown in figure 4, described determine working as energy-storage units according to the parameter evaluation grade using Weighted Fuzzy operation rule
Preceding status assessment grade may include：
Step S1331, the parameter evaluation result if there is the corresponding energy-storage units of parameter evaluation grade are default result
When, it is determined that the current state evaluation grade of energy-storage units is the parameter evaluation grade.
Wherein, it is severely subnormal that the default result, which can refer to parameter evaluation result,.
For example, in the current value of the voltage of accumulator, temperature, SOC and SOH, the voltage of accumulator battery corresponds to
Parameter evaluation grade is grade 3, and it is 1 that temperature, SOC and the SOH of accumulator, which correspond to parameter evaluation grade,, can be true by table 1
The voltage for determining battery corresponds to severely subnormal, then can determine that the current state evaluation grade of energy-storage units is grade 3.
Step S1332, the parameter evaluation result if there is no the corresponding energy-storage units of parameter evaluation grade are default knot
When fruit, then the mean value of the weighted sum of each parameter evaluation grade is calculated, which is determined as to the current state of the energy-storage units
Evaluation grade.
If the current state assessment result of the corresponding energy-storage units of parameter evaluation grade is not present in parameter evaluation grade
For severely subnormal when, can be according to formulaThe current state evaluation grade of energy-storage units is calculated, wherein N is second
Number of parameters in parameter information, ωiFor each parameter weights,Parameter evaluation grade, range [0,2] for i-th of parameter.Its
In, all weights sums are 1, and the weights can be set, such as 1/N.The disclosure is not construed as limiting this.
Fig. 5 shows the stream of the energy-accumulating power station control method based on energy-storage units status assessment according to one embodiment of the disclosure
Cheng Tu.As shown in figure 5, the energy-accumulating power station control method based on energy-storage units status assessment, can also include：
Step S17 obtains nearest N days condition evaluation results of energy-storage units, wherein N is positive integer.
From the condition evaluation results of the energy-storage units stored in server, nearest N days of energy-storage units can be obtained
Condition evaluation results.
Step S18 obtains the energy-storage units most according to nearest N days condition evaluation results of the energy-storage units
Nearly N days status assessment grades；
N days condition evaluation results can have multiple recently, can be commented according to the corresponding state of each condition evaluation results
Estimate grade, can be by searching for the correspondence of storage state assessment result and status assessment grade in server, or also may be used
It is closed so that condition evaluation results in the condition evaluation results that are periodically preserved in finding step S134 are corresponding with status assessment grade
System, obtains nearest N days status assessment grades of the energy-storage units.
Described nearest N days status assessment grades are weighted in step S19, obtain the history shape of energy-storage units
State evaluation grade.
Weights from current nearest status assessment grade can be set as maximum, it will be from current farthest status assessment
The weights of grade are set as minimum, such as：The weights of status assessment grade from current nearest one day can be set as 1, from
The weights of second day current status assessment grade are set as 0.7, the weights of the status assessment grade from current third day
It is set as 0.4.The weighted sum of nearest N days status assessment grades or the mean value of weighted sum can be calculated, it can be by nearest N
Historic state evaluation grade value of the value that it status assessment grade is weighted as energy-storage units.
Step S20 determines the historic state assessment result of energy-storage units according to the historic state evaluation grade.
0-3 grades can be set as according to historic state evaluation grade, corresponding historic state assessment result, which is arranged, to be
Normally, abnormal, exception and severely subnormal.Then, according to the historic state evaluation grade, historic state assessment knot is matched
Fruit determines the historic state assessment result of energy-storage units.
Alternatively, can also be gone through according to described according to the status assessment grade of storage and the correspondence of condition evaluation results
History status assessment grade searches matched historic state assessment result, determines the historic state assessment result of energy-storage units.
Fig. 6 shows the flow chart of the method for the step S14 according to one embodiment of the disclosure.As shown in fig. 6, in a kind of possibility
Realization method in, step S14 determines energy storage list according to the current state assessment result and/or historic state assessment result
The operating status of member adjusts priority, may include：
Step S141 obtains energy-storage units respectively according to the current state assessment result and historic state assessment result
Current state evaluation grade and historic state evaluation grade；
It can be commented according to the current state by the status assessment grade of storage and the correspondence of condition evaluation results
Estimate as a result, search matched current state evaluation grade, according to the historic state assessment result, searches matched historic state
Evaluation grade.
Step S142, the current state evaluation grade of more each energy-storage units；
Step S143, for the different energy-storage units of current state evaluation grade, the lower storage of current state evaluation grade
It is higher that the corresponding operating status of energy unit adjusts priority；
Step S144, energy-storage units identical for current state evaluation grade, the lower storage of historic state evaluation grade
It is higher that the corresponding operating status of energy unit adjusts priority.
For example, if the current state evaluation grade of energy-storage units 1-4 is respectively：Grade 1, grade 2, grade 2, etc.
Grade 3, for the different energy-storage units 1,2,4 of current state evaluation grade and energy-storage units 1,3,4, can be arranged energy-storage units
1,2,4 operating status adjusting priority is respectively：Priority 3, priority 2, priority 1, the operation shape of energy-storage units 1,3,4
State adjusts priority：Priority 3, priority 2, priority 1.
For the identical energy-storage units of current state evaluation grade 2 and energy-storage units 3, then it can compare 2 He of energy-storage units
The historic state evaluation grade of energy-storage units 3, if the historic state evaluation grade of energy-storage units 2 is 1, energy-storage units 3 are gone through
History status assessment grade is 3, then it is higher can to determine that the operating status of energy-storage units 2 adjusts priority, it may be determined that energy storage list
It is relatively low that the operating status of member 3 adjusts priority.For example, can the operating status of energy-storage units 2 be adjusted priority adds one
Numerical value, which can be the numerical value more than 0 and less than 1, such as 0.1, alternatively, for the range of the numerical value, it is ensured that storage
Can unit 2 operating status adjust priority plus the numerical value no more than 3 (it is higher than the priority of energy-storage units 2 and with energy storage list
The priority for the energy-storage units 1 that member 2 is closed on).In the case where operating status adjusting priority case has been turned up in energy-storage units 2,
Can the operating status of energy-storage units 3 priority be adjusted to remain unchanged.Wherein, operating status adjusts the higher energy storage of priority
Unit is more preferentially adjusted.
Above is only to adjust priority setting to the operating status of the identical energy-storage units of current state evaluation grade
Example, the disclosure are not construed as limiting this.And the numerical value can also be selected according to actual conditions, and the disclosure is to the numerical value
Range is also not construed as limiting.
Fig. 7 shows the flow chart of the method for the step S15 according to one embodiment of the disclosure.In a kind of possible realization method
In, as shown in fig. 7, adjusting priority and the complete Charge/Discharge Cycles of the energy-storage units according to the operating status, determine energy storage
The charge/discharge priority of unit may include：
Step S151, if the operating status of energy-storage units adjusts priority and is different from, by the fortune of energy-storage units
Row status adjustment priority is determined as the charge/discharge priority of energy-storage units；
Step S152 adjusts the identical energy-storage units of priority if there is operating status, then obtains operating status adjusting
The Charge/Discharge Cycles of the identical energy-storage units of priority；
The operating status of the less energy-storage units of Charge/Discharge Cycles is adjusted priority and is adjusted to compared with Gao You by step S153
First grade；
Operating status after adjustment is adjusted the charge/discharge priority that priority is determined as energy-storage units by step S154.
In one example, when battery charges, SOC thinks that energy-storage units are in fully charged state more than 0.8, if electric
When pond is charged, SOC maximum values are less than 0.8, illustrate that the energy-storage units there may be loss or failure, think SOC maximum values at this time
90% for the storage unit fully charged state limit value.Each energy-storage units progress is primary fully charged, records the storage
The charging times of energy unit accumulate once, and carry out primary electric discharge completely (SOC is less than 0.2 when electric discharge), record the energy-storage units
Discharge time accumulates once.The energy-storage units for adjusting priority when charging for identical operating status, can be by complete charge/discharge
The operating status of the less energy-storage units of number adjusts priority and is adjusted to higher, and the operating status after adjustment is adjusted priority
It is determined as the charge/discharge priority of energy-storage units.
In one possible implementation, according to first parameter information, determine that the energy-storage units are in adjustable
The state of section then carries out charge/discharge to the energy-storage units according to the charge/discharge priority of the energy-storage units, may include：
Determine that the adjustment state of energy-storage units is adjustable and non-adjustable according to corresponding first parameter information of energy-storage units
Section；
In one example, the adjusting shape of energy-storage units can be determined according to the circuit operation information in the first parameter information
State is adjustable and unadjustable, for example, circuit is in operating status, then the adjustment state of energy-storage units is set as adjustable
State；Circuit is in the switch of stand-by heat, cold standby, inspecting state or inlet wire circuit in position is divided, then by the tune of energy-storage units
Nodular state is set as unadjustable state.
Above is only to determine that the adjustment state of energy-storage units is adjustable according to corresponding first parameter information of energy-storage units
Section and uncontrollable example, the disclosure are not construed as limiting this.
If energy-storage units are in adjustable state, according to the charge/discharge priority orders of the energy-storage units, to energy storage
Unit carries out the adjusting of charge/discharge；
It, can be according to the charge/discharge priority energy-storage units high to priority when energy-storage units are in adjustable state
It is adjusted into row major, after reaching complete charge/discharge state, then charge/discharge is carried out to the low energy-storage units of priority.
If it is determined that the energy-storage units in adjustable state entirely reach fully charged/limit value for discharging completely, then control
It makes and average charge/electric discharge is carried out to the energy-storage units of normal operating condition.
If the energy-storage units in adjustable state entirely reach fully charged/limit value for discharging completely, i.e., all reach
To complete electricity/discharge condition, then average charge/electric discharge can be carried out to all energy-storage units in normal operating condition.
Wherein, the energy-storage units of the normal operating condition refer to that there is no overcharge or the energy storage of over-discharge in the recent period
Unit.For example, energy-storage units nearly 3 days SOC maximum values and minimum value are obtained, if SOC maximum values are more than 0.9 or SOC minimums
Value is less than 0.2, illustrate corresponding energy-storage units exist within nearly 3 days overcharge/over-discharge the case where, be in entire energy-accumulating power station
Overcharge or over-discharge in the case of, occurred overcharging/energy-storage units of over-discharge will not participate in average charge/
Discharge process.
The presently disclosed embodiments is described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (10)
1. a kind of energy-accumulating power station control method based on energy-storage units status assessment, which is characterized in that including：
The first monitoring information that energy conversion system PCS is uploaded is screened, the first parameter information is obtained；
The second monitoring information that battery management system BMS is uploaded is screened, the second parameter information is obtained；
Energy-storage units are assessed according to the current value of second parameter information, determine the current state assessment of energy-storage units
As a result；
According to the current state assessment result and/or historic state assessment result, determine that the operating status of energy-storage units is adjusted
Priority；
Adjust priority and the complete Charge/Discharge Cycles of the energy-storage units according to the operating status, determine the filling of energy-storage units/
Electric discharge priority；
If in the state of determining that the energy-storage units are in adjustable according to first parameter information, according to the energy storage
The charge/discharge priority of unit carries out charge/discharge to the energy-storage units.
2. the energy-accumulating power station control method according to claim 1 based on energy-storage units status assessment, which is characterized in that should
Method further includes：
According to the quantity of the PCS, energy-accumulating power station is divided into multiple energy-storage units, wherein the quantity of the energy-storage units with
The quantity of the PCS is identical.
3. the energy-accumulating power station control method according to claim 2 based on energy-storage units status assessment, which is characterized in that institute
State the first parameter information include it is following in it is one or more：
Circuit operation information, the PCS of transformer station high-voltage side bus information, outlet and inlet wire receive the mesh that energy-accumulating power station scheduling system issues
Mark power instruction.
4. the energy-accumulating power station control method according to claim 2 based on energy-storage units status assessment, which is characterized in that institute
State the second parameter information include it is following in it is one or more：
Voltage, temperature, state-of-charge SOC, the health status SOH of accumulator.
5. the energy-accumulating power station control method according to claim 4 based on energy-storage units status assessment, which is characterized in that root
Energy-storage units are assessed according to the current value of second parameter information, determine the current state assessment result of energy-storage units,
Including：
Periodically obtain the current value of second parameter information；
According to the current value of each parameter in second parameter information, the corresponding parameter evaluation grade of each parameter is obtained；
According to the parameter evaluation grade current state evaluation grade of energy-storage units is calculated using Weighted Fuzzy operation rule；
According to the current state evaluation grade of the energy-storage units, the current state assessment result of energy-storage units is determined.
6. the energy-accumulating power station control method according to claim 5 based on energy-storage units status assessment, which is characterized in that institute
It states according to the parameter evaluation grade, using Weighted Fuzzy operation rule, determines the current state evaluation grade of energy-storage units, wrap
It includes：
When parameter evaluation result if there is the corresponding energy-storage units of parameter evaluation grade is default result, it is determined that energy storage list
The current state evaluation grade of member is the parameter evaluation grade；
When parameter evaluation result if there is no the corresponding energy-storage units of parameter evaluation grade is default result, then each ginseng is calculated
The mean value, is determined as the current state evaluation grade of the energy-storage units by the mean value of the weighted sum of number evaluation grade.
7. the energy-accumulating power station control method according to claim 5 based on energy-storage units status assessment, which is characterized in that should
Method further includes：
Obtain nearest N days condition evaluation results of energy-storage units, wherein N is positive integer；
According to nearest N days condition evaluation results of the energy-storage units, nearest N days states for obtaining the energy-storage units are commented
Estimate grade；
Nearest N days status assessment grades of the energy-storage units are weighted, historic state evaluation grade is obtained；
According to the historic state evaluation grade, the historic state assessment result of energy-storage units is determined.
8. the energy-accumulating power station control method according to claim 7 based on energy-storage units status assessment, which is characterized in that root
According to the current state assessment result and/or historic state assessment result, determine that the operating status of energy-storage units adjusts priority,
Including：
According to the current state assessment result and historic state assessment result, the current state assessment of energy-storage units is obtained respectively
Grade and historic state evaluation grade；
Compare the current state evaluation grade of each energy-storage units；
For the different energy-storage units of current state evaluation grade, the corresponding fortune of the lower energy-storage units of current state evaluation grade
Row status adjustment priority is higher；
Energy-storage units identical for current state evaluation grade, the corresponding fortune of the lower energy-storage units of historic state evaluation grade
Row status adjustment priority is higher.
9. the energy-accumulating power station control method according to claim 8 based on energy-storage units status assessment, which is characterized in that root
Priority and the complete Charge/Discharge Cycles of the energy-storage units are adjusted according to the operating status, determines that the charge/discharge of energy-storage units is excellent
First grade, including：
If the operating status of energy-storage units adjusts priority and is different from, the operating status of energy-storage units is adjusted into priority
It is determined as the charge/discharge priority of energy-storage units；
The identical energy-storage units of priority are adjusted if there is operating status, then obtains operating status and adjusts the identical storage of priority
The Charge/Discharge Cycles of energy unit；
The operating status of the less energy-storage units of Charge/Discharge Cycles is adjusted into priority and is adjusted to higher priority；
Operating status after adjustment is adjusted into the charge/discharge priority that priority is determined as energy-storage units.
10. the energy-accumulating power station control method according to claim 9 based on energy-storage units status assessment, which is characterized in that
If determining that the energy-storage units are in adjustable state according to first parameter information, according to the energy-storage units
Charge/discharge priority carries out charge/discharge to the energy-storage units, including：
Determine whether the adjustment state of energy-storage units is adjusted according to corresponding first parameter information of energy-storage units；
If energy-storage units are in adjustable state, according to the charge/discharge priority orders of the energy-storage units, to energy-storage units
Carry out charge/discharge；
If it is determined that the energy-storage units in adjustable state entirely reach fully charged/limit value for discharging completely, then control pair
The energy-storage units of normal operating condition carry out average charge/electric discharge；
Wherein, the energy-storage units of the normal operating condition refer to that there is no overcharge or the energy storage list of over-discharge in the recent period
Member.
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