CN104794343B - A kind of depreciation method in battery energy storage system cost life cycle management - Google Patents
A kind of depreciation method in battery energy storage system cost life cycle management Download PDFInfo
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Abstract
The depreciation method in a kind of battery energy storage system cost life cycle management of the present invention, including：Read battery energy storage system parameter；Calculate the cost of investment of battery energy storage system；Calculate battery energy storage system residual life life cycle costing waits year value；Calculate the complete discharge and recharge number of battery energy storage system residual life every year on average；Calculate the cost of investment of the once complete discharge and recharge of battery energy storage system residual life First Year；Calculate the complete discharge and recharge number of battery energy storage system residual life First Year；Calculate the cost of investment amount of depreciation of battery energy storage system residual life First Year；Calculate cost of investment, complete discharge and recharge number and the life-span time limit after battery energy storage system residual life First Year；Judge whether battery energy storage system is fully utilized.
Description
Technical field
The present invention relates to a kind of depreciation method, and in particular to the depreciation in a kind of battery energy storage system cost life cycle management
Method.
Background technology
In power system, any element can all produce corresponding financial cost.Electric power enterprise as profit-generating enterprise more
Various equipment in power system, the cost structure of each class component need to be considered.Therefore, battery energy storage system is as in power system
A part, in practical application operation, it is considered however that its corresponding cost factor and cost of investment.
In specific economic activity, the initial outlay cost of equipment needs reasonably to be reacted to its later operation.And
The cost of investment of battery energy storage system is one-time investment, in order in the scheduling a few days ago of battery energy storage system embody investment into
This, should convert cost of investment into the cost of every day, and time value on assets is considered during conversion.
The time value is the economic limit of objective reality, and any economic activity will be carried out when specific in the air, fund
Value will not be always maintained at constant, it is closely related with the time.Discounting for the time value, when the money for calculating different time
During price of gold value, then do not possess strong convincingness.And for current fund, it can be produced a profit during use, i.e.,
Make not consider inflationary factor, it also can be more more valuable than the capital of identical quantity in the future.Therefore cost of investment depreciation is worked as
, it is necessary to consider the time value during in specifically dispatching a few days ago, the amount of the fund conversion of different time to same time is carried out
Compare.
The content of the invention
To achieve these goals, the present invention provides the depreciation side in a kind of battery energy storage system cost life cycle management
Method, taken into full account time value on assets, promote battery energy storage system investment just cost and overall long-term economics and
Humorous development.
The purpose of the present invention is realized using following technical proposals：
A kind of depreciation method in battery energy storage system cost life cycle management, methods described comprise the steps：
(1) battery energy storage system parameter is read；
(2) cost of investment of battery energy storage system is calculated；
(3) calculate battery energy storage system residual life life cycle costing waits year value；
(4) the complete discharge and recharge number of battery energy storage system residual life every year on average is calculated；
(5) cost of investment of the once complete discharge and recharge of battery energy storage system residual life First Year is calculated；
(6) the complete discharge and recharge number of battery energy storage system residual life First Year is calculated；
(7) the cost of investment amount of depreciation of battery energy storage system residual life First Year is calculated；
(8) cost of investment, complete discharge and recharge number and year in life-span after battery energy storage system residual life First Year are calculated
Limit；
(9) judge whether battery energy storage system is fully utilized.
Preferably, the battery energy storage system parameter includes, rated power, capacity, power cost coefficient and Capacity Cost
Coefficient.
Preferably, the cost of investment of battery energy storage system is in the step (2)：
CIN,total=KINPPmax+KINCCS
Wherein, KINPFor battery energy storage system input, the cost coefficient of the peak power of output；KINCFor battery energy storage system
The cost coefficient of capacity；PmaxMaximum for battery energy storage system to external power；CSFor battery energy storage system capacity.
Preferably, the year value that waits of calculating battery energy storage system residual life life cycle costing is in the step (3)：
Wherein, pA(i, n) is recovery of the capital coefficient, and i is Annual Percentage Rate, and n is the residual life of battery energy storage system.
Preferably, in the step (4), the remaining discharge and recharge number completely of battery energy storage system is divided into battery energy storage
In the residual life cycle of system, obtain within the residual life cycle, the complete discharge and recharge number of battery energy storage system every year on average：
M=[M/n]
Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, and [] to be rounded to positive infinity direction, n is electricity
The residual life of pond energy-storage system.
Preferably, in the step (5), year value C is waited according to battery energy storage system residual life life cycle costingIN,AAnd electricity
The complete discharge and recharge number m of pond energy-storage system residual life every year on average, battery energy storage system is calculated in residual life First Year
The cost of investment of once complete discharge and recharge be：
CIN,δ=CIN,A/m。
Preferably, in the step (6), the complete charge and discharge number of battery energy storage system residual life First Year is calculated：
m0=Qyear,dis/CS
Wherein, Qyear,disFor the battery energy storage system discharge capacity of 1 year, CSFor the rated capacity of battery energy storage system.
Further, in the step (7), cost of investment depreciation of the battery energy storage system in residual life First Year is calculated
Volume：
CIN,year=m0·CIN,δ
Wherein, m0For the complete charge and discharge number of battery energy storage system residual life First Year；CIN,δExist for battery energy storage system
The once complete discharge and recharge cost of investment of residual life First Year.
Preferably, in the step (8), the cost of investment after the battery energy storage system residual life First Year：
Wherein, CIN,FFor the future value of battery energy storage system cost of investment；
Complete discharge and recharge number after the battery energy storage system residual life First Year：
Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, Nyear,1Represent 1 year, cjFor jth time depreciation
Cost；
According to the residual life n of battery energy storage system, the longevity after the battery energy storage system residual life First Year is obtained
Order the time limit：
n1=n-1.
Further, the step (9) includes, if filling completely after the battery energy storage system residual life First Year
Discharge time and the life-span time limit, both one are changed into 0, then the battery energy storage system is fully used, and out of service；Otherwise turn
To step (2).
Compared with prior art, the beneficial effects of the present invention are：
The present invention efficiently solves different physical significances, the target of different dimensions by being adjusted to object function
Function can not weighting summation the problem of.By being set between the object function and the object function of energy storage cost evaluated in peak load shifting
Different weight coefficients is put, the charge-discharge electric power of the solution under different conditions, i.e. battery energy storage system day part is solved, with basis
Need to use different discharge and recharge scheduling strategies.This method has taken into full account time value on assets, promotes battery energy storage system
System investment just cost and the harmonious development of overall long-term economics.
Brief description of the drawings
Fig. 1 is the depreciation method flow chart in a kind of battery energy storage system cost life cycle management of the present invention；
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, the depreciation method in a kind of battery energy storage system cost life cycle management, battery energy storage system are main
It is made up of battery pack, PCS, control device and transformer, and caused cost also just constitutes battery during these equipment investments
The cost of investment of energy-storage system, that is, the fund of equipment is bought, installs, as energy-storage battery, energy-storage travelling wave tube need to install and power network phase
PCS even and monitoring system etc..Wherein PCS and monitoring system determine the size of battery energy storage system output and input power,
Therefore the watt level that a part of cost of battery energy storage system is inputted and exported to it is related, and this part can be described as power investment
Cost.The amount of capacity of energy-storage battery determines another part cost of whole battery energy storage system, referred to as Energy investment cost.
The cost of investment of battery energy storage system is one-time investment, in order to be embodied in the scheduling a few days ago of battery energy storage system
Cost of investment needs the time valency of consideration fund, it is necessary to by cost of investment conversion into the cost of every day during conversion
Value.The time value is the economic limit of objective reality, any economic activity, is required for what is carried out in the air when specific, if
Do not consider the time value, convictive result cannot be obtained by calculating the value of resource of different time.The value of fund will not
It is always maintained at constant, it is closely related with the time.For current fund, even if inflationary factor is not considered, due to it
It can be produced a profit during use, also can be more more valuable than the capital of identical quantity in the future, therefore need different time
Amount of the fund is converted to the same time and is compared.In this patent, it is necessary to consider the time value.
Methods described comprises the steps：
(1) battery energy storage system parameter is read；The battery energy storage system parameter includes, rated power, capacity, power into
This coefficient and Capacity Cost coefficient.
(2) cost of investment of battery energy storage system is calculated；The cost of investment of battery energy storage system is in the step (2)：
CIN,total=KINPPmax+KINCCS
Wherein, KINPFor battery energy storage system input, the cost coefficient of the peak power of output；KINCFor battery energy storage system
The cost coefficient of capacity；PmaxMaximum for battery energy storage system to external power；CSFor battery energy storage system capacity.
(3) calculate battery energy storage system residual life life cycle costing waits year value；Battery energy storage is calculated in the step (3)
System spare life cycle cost wait year value be：
Wherein, pA(i, n) is recovery of the capital coefficient, and i is Annual Percentage Rate, and n is the residual life of battery energy storage system.
(4) the complete discharge and recharge number of battery energy storage system residual life every year on average is calculated；, will in the step (4)
The remaining discharge and recharge number completely of battery energy storage system divides the residual life cycle of battery energy storage system, obtains in the remaining longevity
Order in the cycle, the complete discharge and recharge number of battery energy storage system every year on average：
M=[M/n]
Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, and [] to be rounded to positive infinity direction, n is electricity
The residual life of pond energy-storage system.
(5) cost of investment of the once complete discharge and recharge of battery energy storage system residual life First Year is calculated；The step
(5) in, year value C is waited according to battery energy storage system residual life life cycle costingIN,AIt is averaged with battery energy storage system residual life
Annual complete discharge and recharge number m, calculate investment of the battery energy storage system in the once complete discharge and recharge of residual life First Year
Cost is：
CIN,δ=CIN,A/m。
(6) the complete discharge and recharge number of battery energy storage system residual life First Year is calculated；In the step (6), calculate
The complete charge and discharge number of battery energy storage system residual life First Year：
m0=Qyear,dis/CS
Wherein, Qyear,disFor the battery energy storage system discharge capacity of 1 year, CSFor the rated capacity of battery energy storage system.
(7) the cost of investment amount of depreciation of battery energy storage system residual life First Year is calculated；Further, the step
(7) in, cost of investment amount of depreciation of the battery energy storage system in residual life First Year is calculated：
CIN,year=m0·CIN,δ
Wherein, m0For the complete charge and discharge number of battery energy storage system residual life First Year；CIN,δExist for battery energy storage system
The once complete discharge and recharge cost of investment of residual life First Year.
(8) cost of investment, complete discharge and recharge number and year in life-span after battery energy storage system residual life First Year are calculated
Limit；In the step (8), the cost of investment after the battery energy storage system residual life First Year：
Wherein, CIN,FFor the future value of battery energy storage system cost of investment；
Complete discharge and recharge number after the battery energy storage system residual life First Year：
Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, Nyear,1Represent 1 year, cjFor jth time depreciation
Cost；
According to the residual life n of battery energy storage system, the longevity after the battery energy storage system residual life First Year is obtained
Order the time limit：
n1=n-1.
(9) judge whether battery energy storage system is fully utilized.The step (9) includes, if the battery energy storage system
Complete discharge and recharge number and the life-span time limit after residual life First Year, both one are changed into 0, then the battery energy storage system is complete
Complete utilization, and it is out of service；Otherwise step (2) is gone to.
Embodiment：The cost of investment of battery energy storage system is mainly related to the power and capacity of battery energy storage system, investment
The calculation formula of cost is as follows：
CIN,total=KINPPmax+KINCCS (1)
K in formulaINP--- the cost coefficient (kW/ member) related to the peak power of battery energy storage system input, output；
KINC--- the cost coefficient (kWh/ member) related to battery energy storage system capacity；
Pmax--- battery energy storage system (is negative to external power during due to charging, therefore takes its exhausted to the maximum of external power
To value) (kW)；
CS--- battery energy storage system capacity (kWh).
Assuming that the life-span of battery energy storage system is n, then the initial outlay cost conversion of battery energy storage system is to wait year value
Cost of investment be：
Wherein, i is Annual Percentage Rate；pA(i, n) represents recovery of the capital coefficient, present worth P (occurring at the beginning of First Year) known to expression
Equivalent relation between year value A such as n.
The number of the remaining charge-discharge electric power completely of battery energy storage system is divided into the remaining battery energy storage system life-span
Cycle.The complete discharge and recharge number of 1 year is calculated as follows：
M=[M/n] (3)
Wherein, M is the number of the remaining discharge and recharge completely of battery energy storage system；[] is to be rounded to positive infinity direction.
Battery energy storage system is calculated in the First Year of remaining life cycle, once the cost of investment of complete charge and discharge.
The cost C of complete charge and discharge once in this yearIN,δIt is calculated as follows：
CIN,δ=CIN,A/m (4)
Calculate the complete charge and discharge number that battery energy storage system is converted in this year.
m0=Qyear,dis/CS (5)
Wherein, Qyear,disRepresent discharge electricity amount of the battery energy storage system in 1 year, CSRepresent the volume of battery energy storage system
Constant volume.
Calculate cost of investment amount of depreciation of the battery energy storage system in First Year.
Cost of investment amount of depreciation is calculated as follows：
CIN,year=m0·CIN,δ (6)
Calculate remaining battery energy storage system cost of investment, complete discharge and recharge number and the life-span time limit.
Remaining battery energy storage system cost of investment：
Wherein, CIN,FFor the future value of battery energy storage system cost of investment.
The remaining complete discharge and recharge number of battery energy storage system：
The remaining battery energy storage system life-span time limit：
n1=n-1 (9)
It is calculated、M1、n1Afterwards, similar with formula (2), calculate Second Year again waits year value, and calculates Second Year
During the complete operation number of conversion, formula (5) is arrived by formula (3), the annual amount of depreciation in the year is finally calculated according to formula (6),
And the surplus value of battery energy storage system, remaining charge and discharge number and residual life completely are calculated according to formula (7), formula (8) and formula (9)
Cycle, you can proceed to again in the battery energy storage system cost of investment depreciation calculating of the 3rd year, the like, until battery energy storage
The cost of investment depreciation completion of system or life cycle terminate, you can battery energy storage system is out of service.Specific flow is such as
Shown in Fig. 1.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
The present invention is described in detail with reference to above-described embodiment for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution, and without departing from any of spirit and scope of the invention
Modification or equivalent substitution, it all should cover among scope of the presently claimed invention.
Claims (8)
1. the depreciation method in a kind of battery energy storage system cost life cycle management, it is characterised in that methods described includes following
Step：
(1) battery energy storage system parameter is read；
(2) cost of investment of battery energy storage system is calculated；
(3) calculate battery energy storage system residual life life cycle costing waits year value；
(4) the complete discharge and recharge number of battery energy storage system residual life every year on average is calculated；
(5) cost of investment of the once complete discharge and recharge of battery energy storage system residual life First Year is calculated；
(6) the complete discharge and recharge number of battery energy storage system residual life First Year is calculated；
(7) the cost of investment amount of depreciation of battery energy storage system residual life First Year is calculated；
(8) cost of investment, complete discharge and recharge number and the life-span time limit after battery energy storage system residual life First Year are calculated；
The cost of investment after the battery energy storage system residual life First Year is determined by following formula：
CIN,F1=CIN,F-CIN,year=CIN,total·(1+i)n-CIN,year
Wherein, CIN,FFor the future value of battery energy storage system cost of investment；
The complete discharge and recharge number after the battery energy storage system residual life First Year is determined by following formula：
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Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, CIN,yearBattery energy storage system is in residual life first
The cost of investment amount of depreciation in year, CIN,totalFor the cost of investment of battery energy storage system, i is Annual Percentage Rate, Nyear,1Represent battery energy storage
System spare life-span First Year, cjFor the cost of jth time depreciation；
According to the residual life n of battery energy storage system, the year in life-span after the battery energy storage system residual life First Year is obtained
Limit：
n1=n-1；
(9) judge whether battery energy storage system is fully utilized；It is if complete after the battery energy storage system residual life First Year
Full discharge and recharge number and the life-span time limit, both one are changed into 0, then the battery energy storage system is fully used, and out of service；It is no
Then go to step (2).
2. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 1, it is characterised in that：It is described
Battery energy storage system parameter includes, rated power, capacity, power cost coefficient and Capacity Cost coefficient.
3. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 1, it is characterised in that：It is described
The cost of investment of battery energy storage system is in step (2)：
CIN,total=KINPPmax+KINCCS
Wherein, KINPFor battery energy storage system input, the cost coefficient of the peak power of output；KINCFor battery energy storage system capacity
Cost coefficient；PmaxMaximum for battery energy storage system to external power；CSFor battery energy storage system capacity.
4. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 3, it is characterised in that：It is described
The year value that waits of calculating battery energy storage system residual life life cycle costing is in step (3)：
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Wherein, PA(i, n) is recovery of the capital coefficient, and i is Annual Percentage Rate, and n is the residual life of battery energy storage system.
5. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 1, it is characterised in that：It is described
In step (4), the remaining discharge and recharge number completely of battery energy storage system is divided to the residual life cycle of battery energy storage system,
Obtain within the residual life cycle, the complete discharge and recharge number of battery energy storage system every year on average：
M=[M/n]
Wherein, M is the remaining discharge and recharge number completely of battery energy storage system, and [] to be rounded to positive infinity direction, n stores up for battery
The residual life of energy system.
6. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 1, it is characterised in that：It is described
In step (5), year value C is waited according to battery energy storage system residual life life cycle costingIN,AWith battery energy storage system residual life
Complete discharge and recharge number m every year on average, calculate once complete discharge and recharge of the battery energy storage system in residual life First Year
Cost of investment is：
CIN,δ=CIN,A/m。
7. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 1, it is characterised in that：It is described
In step (6), the complete charge and discharge number of battery energy storage system residual life First Year is calculated：
m0=Qyear,dis/CS
Wherein, Qyear,disFor the battery energy storage system discharge capacity of 1 year, CSFor the rated capacity of battery energy storage system.
8. the depreciation method in battery energy storage system cost life cycle management as claimed in claim 7, it is characterised in that：It is described
In step (7), cost of investment amount of depreciation of the battery energy storage system in residual life First Year is calculated：
CIN,year=m0·CIN,δ
Wherein, m0For the complete charge and discharge number of battery energy storage system residual life First Year；CIN,δIt is battery energy storage system in residue
The once complete discharge and recharge cost of investment of life-span First Year.
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| CN110752630A (en) * | 2018-07-19 | 2020-02-04 | 华北电力大学 | Light storage charging station capacity optimization simulation modeling method considering battery echelon utilization |
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