CN101799889A - Expense estimation method of oil immersed transformer based on whole life cycle cost model - Google Patents
Expense estimation method of oil immersed transformer based on whole life cycle cost model Download PDFInfo
- Publication number
- CN101799889A CN101799889A CN200910046017A CN200910046017A CN101799889A CN 101799889 A CN101799889 A CN 101799889A CN 200910046017 A CN200910046017 A CN 200910046017A CN 200910046017 A CN200910046017 A CN 200910046017A CN 101799889 A CN101799889 A CN 101799889A
- Authority
- CN
- China
- Prior art keywords
- expense
- cost
- filled transformer
- oil
- cycle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an expense estimation method of an oil immersed transformer based on a whole life cycle cost model, comprising the following steps of: establishing a cost model of a relationship between each expense consumed in a whole life cycle from purchase to retirement of the oil immersed transformer and the cost; estimating each expense consumed in the whole life cycle based on the cost model; and further calculating the total cost consumed in the whole life cycle based on each estimated expense, wherein the expenses consumed in the whole life cycle of the oil immersed transformer include a purchase expenditure of the oil immersed transformer, an installation and debugging expense, a needed test expense, an energy consumption expense, an environmental protection expense, a daily patrol check expense, a periodic maintenance expense, a fault maintenance expense, a fault loss expense, a disposal expense when the oil immersed transformer retires, an equipment residual value and the like, therefore, the invention can efficiently estimate the expense generated in the whole service life of the oil immersed transformer and is convenient for enterprises to efficiently control and manage the cost.
Description
Technical field
The present invention relates to a kind of evaluation method, relate in particular to a kind of oil-filled transformer cost-estimate method based on the overall life cycle cost model.
Background technology
The cost-estimate method of existing 10kV oil-filled transformer, the technology that generally is divided into is assessed with economic two parts, wherein the assessment of technology mainly is provided with technical indicators such as copper loss, iron loss, available rate, security, service data, and its running wastage and acquisition expenses are mainly considered in economic assessment.Obviously, the grasp of all kinds of recessive expenses in existing appraisal procedure lacks cycle oil-filled transformer life-cycle, and to the consideration of unusual expense such as fault, maintenance and test.And for the 10kV oil-filled transformer, its purchase cost and loss are the part of real cost, breakdown repair, overhaul prerun, the expense of stopping aspects such as retired processing often occupies more critical positions.Therefore, simple consideration purchase cost and wear and tear expense obviously are rational inadequately in economic evaluation.
In view of this, how according to the operation characteristic of oil-filled transformer in cycle life-cycle, effective estimation oil-filled transformer spent expense in cycle life-cycle, so that enterprise more reasonably purchases and the oil-filled transformer management, reduce the cost of enterprise, and effectively save social resources, become the technical task that those skilled in the art need to be resolved hurrily in fact.
Summary of the invention
The object of the present invention is to provide a kind of oil-filled transformer cost-estimate method,, reduce enterprise cost, and effectively save social resources so that enterprise more reasonably carries out equipment purchase and equipment control based on the overall life cycle cost model.
To achieve the above object, the invention provides a kind of oil-filled transformer cost-estimate method based on the overall life cycle cost model, it comprises: 1) set up oil-filled transformer from buying the cost model that concerns between spent general expenses of retired cycle life-cycle and the cost, wherein, described general expenses comprises the first input expense that produces when buying oil-filled transformer, the operating cost that produces in the oil-filled transformer use, repair and maintenance expense, failure cost, and the retired disposal costs that produces when retired of oil-filled transformer; 2) estimate the present worth and the final value of the first input expense of described oil-filled transformer according to described cost model, described first input expense comprises purchase commodity, Installation and Debugging expense and the necessary testing expenses of oil-filled transformer; 3) estimate the present worth and the final value of the operating cost of described oil-filled transformer according to described cost model, described operating cost comprises energy consumption cost and the expenses of environmental protection of oil-filled transformer in operational process; 4) estimate the present worth and the final value of the repair and maintenance expense of described oil-filled transformer according to described cost model, described repair and maintenance expense comprises daily walkaround inspection expense and the periodicmaintenance expense of oil-filled transformer in operational process; 5) estimate the present worth and the final value of the failure cost of described oil-filled transformer according to described cost model, described failure cost comprises trouble hunting expense and the breakdown loss expense of oil-filled transformer in operational process; 6) estimate the present worth and the final value of the retired disposal costs of described oil-filled transformer according to described cost model, described retired disposal costs is the expense after the disposal costs deduction equipment salvage value of oil-filled transformer when retired; 7), calculate described oil-filled transformer total present worth and final value in cycle life-cycle according to the present worth and the final value of the first input expense that is estimated, operating cost, repair and maintenance expense, failure cost, retired disposal costs.
Wherein, described oil-filled transformer is the 10kV oil-filled transformer.
In described cost model, described purchase commodity=oil-filled transformer is bought and is taken+the on-the-spot service fee+specific purpose tool expense+first standby redundancy expense+supplier's traffic expense+relevant expenses of taxation+premium of insurance, the debugging charge before described Installation and Debugging expense=proprietor builds expense+described oil-filled transformer that the buildings that is used to lay described oil-filled transformer pays and puts into operation; Described step 2) testing expenses of present worth CI (0)=described purchase commodity+described Installation and Debugging expense+described necessity of first input expense drop into final value CI (the n)=CI (0) * (1+i) of expense for the first time in
n, wherein, n is the total year number in cycle life-cycle, i is the interest rate in cycle life-cycle.
If in the described cost model, cycle life-cycle is n, then open circuit loss expense+described oil-filled transformer a's of the energy consumption cost of a among the n=described oil-filled transformer a has load-loss expense, hours run * cost electricity price of open circuit loss expense=open circuit loss value * described oil-filled transformer a of described oil-filled transformer a * (a 1+ electricity price rate of growth)
a, described oil-filled transformer a has load-loss expense=have hours run * rate of load condensate of load-loss value * described oil-filled transformer a
2* cost electricity price * (1+ electricity price rate of growth)
aThe expenses of environmental protection of a is determined according to the actual expenses of environmental protection that takes place in the corresponding time period, it comprises that operating described oil-filled transformer is for satisfying the environmental fines that environmental requirement needs the expense of ancillary cost and needs payment, if expenses of environmental protection does not take place, then the expenses of environmental protection of corresponding time period is 0.Being provided with the operating cost conversion that each is annual in described cost model is the present worth parameters C O of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CO
a(n), wherein, CO
a(0)=(expenses of environmental protection of the energy consumption cost of a+a) * (1+i)
-a, CO
a(n)=CO
a(0) * (1+i)
n, n is the life-cycle periodic quantity, and i is the interest rate in cycle life-cycle, and the present worth CO (0) of the operating cost in the then described step 3) and final value CO (n) are respectively each annual present worth parameters C O
a(0) and terminal parameter CO
a(n) summation.
If in the described cost model, cycle life-cycle is n, the required tour cost of equipment+Master Cost+tour labour cost of daily walkaround inspection of the daily walkaround inspection expense=a of a among the n is then maked an inspection tour unit wage * (the 1+ wage growth rate) of labour cost=unit monitoring time correspondence
a* monitoring time * patrol and examine number of times; The periodicmaintenance expense of a is determined according to the time requirement of periodicmaintenance, if there is not the generating period maintenance cost, then is 0.Being provided with the repair and maintenance expense conversion that each is annual in described cost model is the present worth parameters C M of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CM
a(n), wherein, CM
a(0)=(the periodicmaintenance expense of daily walkaround inspection expense+a of a) * (1+i)
-a, CM
a(n)=CM
a(0) * (1+i)
n, the present worth CM (0) of the repair and maintenance expense in the then described step 4) and final value CM (n) are respectively each annual present worth parameters C M
a(0) and terminal parameter CM
a(n) summation.
If in the described cost model, cycle life-cycle is n, then the failure rate of the trouble hunting expense of a among the n=(the removal fault oil-filled transformer expense+new oil-filled transformer expense of transportation fault oil-filled transformer expense+transportation+new oil-filled transformer expense of installation) * a; The failure rate of the breakdown loss expense of a=(loss of outage expense+new oil-filled transformer purchase commodity) * a, loss of outage expense=loss of outage load * power off time * supplied electricity rate * (1+ electricity price rate of growth)
a, wherein, the failure rate of a is the annual failure rate.Being provided with the failure cost conversion that each is annual in described cost model is the present worth parameters C F of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CF
a(n), wherein, CF
a(0)=(the breakdown loss expense of trouble hunting expense+a of a) * (1+i)
-a, CF
a(n)=CF
a(0) * (1+i)
n, the present worth CF (0) of the failure cost in the then described step 5) and final value CF (n) are respectively each annual present worth parameters C F
a(0) and terminal parameter CF
a(n) summation.
In described cost model, the general assembly (TW) of the equipment salvage value=described oil-filled transformer when described oil-filled transformer is retired * on average reclaim valency, the direct construction cost of the disposal costs when described oil-filled transformer is retired=removal coefficient * install; The present worth CD of retired disposal costs (0) in the described step 6)=(disposal costs when described oil-filled transformer is retired-when described oil-filled transformer is retired equipment salvage value) * (1+i)
-n, the final value CD of retired disposal costs (n)=CD (0) * (1+i)
n
In sum, oil-filled transformer cost-estimate method based on the overall life cycle cost model of the present invention according to oil-filled transformer from purchasing retired life-cycle cycle characteristics, the expense that oil-filled transformer was taken place in whole serviceable life is effectively estimated, enterprise is control effectively to cost and manage, and then can effectively reduce the cost of enterprise, save social resources.
Description of drawings
Oil-filled transformer cost-estimate method based on the overall life cycle cost model of the present invention is provided by following embodiment and accompanying drawing.
Fig. 1 is the basic flow sheet of the specific embodiment of the invention.
Embodiment
Below will be described in further detail the oil-filled transformer cost-estimate method based on the overall life cycle cost model of the present invention.
Be noted that, oil-filled transformer described in the present embodiment can be the 10kV oil-filled transformer, and cycle life-cycle of setting described oil-filled transformer is 20 years, be n=20, described cycle life-cycle is divided into 20 time periods, and promptly 1 year is a time period, represent (a is 0～20 variation) with a, the 1st year time corresponding segment value a=1 then, the 2nd year time corresponding segment value a=2, the rest may be inferred each time segment value as can be known.For the arbitrary cost function F (a) that hereinafter mentions, (a is 0～20 a integer), its implication is the value then of a this expense end of year; When a=0, F (0) represents the value then of the 0th end of year, i.e. present worth; When a=n=20, the value then of time termination, i.e. final value are calculated in F (n) expression.Suppose that interest rate is i, then the relation between present worth F (0) and the final value F (n) can be expressed as F (n)=F (0) * (1+i)
n,,, can try to achieve final value as long as calculate the present worth of oil-filled transformer in cycle life-cycle according to the above-mentioned relation formula.
See also Fig. 1, in the oil-filled transformer cost-estimate method based on the overall life cycle cost model of the present invention, at first set up described oil-filled transformer from buying the cost model (holding the back describes in detail) that concerns between spent general expenses of retired cycle life-cycle and the cost, described general expenses comprises the first input expense CI that produces when buying oil-filled transformer, the operating cost CO that produces in the oil-filled transformer use, repair and maintenance expense CM, failure cost CF, and the retired disposal costs CD that produces when retired of oil-filled transformer.Wherein, drop into purchase commodity, Installation and Debugging expense and the necessary testing expenses that expense CI mainly comprises oil-filled transformer for the first time; Operating cost CO mainly comprises energy consumption cost and expenses of environmental protection; Repair and maintenance expense CM comprises daily walkaround inspection expense and periodicmaintenance expense; Failure cost CF comprises trouble hunting expense and breakdown loss expense; Retired disposal costs CD comprises the disposal costs that produces when being used to dispose this retired oil-filled transformer (for example oil-filled transformer is removed and disposed artificial, cost of equipment and traffic expense and oil-filled transformer is retired when handling expenses of environmental protection etc.), but this disposal costs should deduct the equipment salvage value of oil-filled transformer when retired.
Then, purchase commodity, Installation and Debugging expense and necessary testing expenses according to described cost model estimation oil-filled transformer, in described cost model, described purchase commodity=oil-filled transformer is bought and is taken+the on-the-spot service fee+specific purpose tool expense+first standby redundancy expense+supplier's traffic expense+relevant expenses of taxation+premium of insurance, the debugging charge before described Installation and Debugging expense=proprietor builds expense+described oil-filled transformer that the buildings that is used to lay described oil-filled transformer pays and puts into operation.
Then, calculate the present worth CI (0) of first input expense of described oil-filled transformer and final value CI (n) according to the purchase commodity of described cost model, oil-filled transformer, Installation and Debugging expense and necessary testing expenses wherein, the testing expenses of CI (0)=described purchase commodity+described Installation and Debugging expense+described necessity, CI (n)=CI (0) * (1+i)
n, i is described interest rate, n is the total year number in cycle life-cycle, i.e. CI (n)=CI (20)=CI (0) * (1+i)
20
Then, estimate the energy consumption cost and the expenses of environmental protection of described oil-filled transformer each in operational process year according to described cost model.For oil-filled transformer, in described cost model, open circuit loss expense+a of the energy consumption cost of a=described oil-filled transformer a has load-loss expense, hours run * cost electricity price * (the 1+ electricity price rate of growth) of open circuit loss expense=open circuit loss value * described oil-filled transformer of described oil-filled transformer a in a
a, described oil-filled transformer a has load-loss expense=the have load-loss value * hours run * rate of load condensate of described oil-filled transformer in a
2* cost electricity price * (1+ electricity price rate of growth)
aThe expenses of environmental protection of a is determined according to the actual expenses of environmental protection that takes place in this year, it comprises that operating described oil-filled transformer is for satisfying the environmental fines that environmental requirement needs the expense of ancillary cost and needs payment, if among a expenses of environmental protection does not take place, then corresponding expenses of environmental protection is 0.For example, according to hours run * cost electricity price * (the 1+ electricity price rate of growth) of the described oil-filled transformer open circuit loss expense=open circuit loss value * described oil-filled transformer in the 1st year in the 1st year that cost model calculates, described oil-filled transformer has load-loss expense=the have hours run * rate of load condensate of load-loss value * described oil-filled transformer in the 1st year
2* cost electricity price * (1+ electricity price rate of growth), the described oil-filled transformer open circuit loss expense=open circuit loss value * described oil-filled transformer in the 2nd year hours run * cost electricity price * (the 1+ electricity price rate of growth) in the 2nd year
2, described oil-filled transformer has load-loss expense=the have hours run * rate of load condensate of load-loss value * described oil-filled transformer in the 2nd year
2* cost electricity price * (1+ electricity price rate of growth)
2, the load-loss expense is arranged according to the preceding described described oil-filled transformer open circuit loss expense and the described oil-filled transformer that can estimate each year successively.Be noted that, if a certain year beginning electricity price rate of growth in cycle life-cycle adjusted, then begin the load-loss expense is arranged according to described oil-filled transformer open circuit loss expense and the described oil-filled transformer of new this year of electricity price Growth Rate Calculation and follow-up each year from this year.
Then, calculate the expenses of environmental protection of energy consumption cost+a of operating cost CO (a)=a of described oil-filled transformer each year according to the energy consumption cost of described cost model, described oil-filled transformer each in operational process year and expenses of environmental protection, and the CO (a) of each year is converted respectively is the present worth CO of the 0th end of year
a(0), its computing formula is: CO
a(0)=CO (a) * (1+i)
-a=(expenses of environmental protection of the energy consumption cost of a+a) * (1+i)
-a, pass through the present worth CO of each year again
a(0) calculates the final value CO of each year
a(n)=CO
a(0) * (1+i)
nThe present worth CO that each is annual
a(0) and final value CO
a(n) add up respectively, can obtain the present worth CO (0) and the final value CO (n) of the operating cost of described oil-filled transformer in cycle life-cycle:
Then, estimate the daily walkaround inspection expense and the periodicmaintenance expense of described oil-filled transformer each in operational process year according to described cost model.In described cost model, the required cost of equipment+tool expense+tour labour cost of daily walkaround inspection expense=daily walkaround inspection of a of a wherein, is maked an inspection tour unit wage * (the 1+ wage growth rate) of labour cost=unit monitoring time correspondence
a* monitoring time * patrol and examine number of times is if hour to be unit, then make an inspection tour labour cost=tour personnel yearly wage/(8 * 365) * (1+ wage growth rate)
a* patrol and examine hourage * patrol and examine number of times; Be noted that the periodicmaintenance expense of each year is determined according to the time requirement of periodicmaintenance, if do not have the generating period maintenance cost, then is 0.In addition, if a certain year beginning wage growth rate in cycle life-cycle adjusted, then calculate the described tour labour cost of this year and follow-up each year according to new wage growth rate from this year beginning.
Then, the periodicmaintenance expense of daily walkaround inspection expense+a of repair and maintenance expense CM (a)=a that calculates each year according to the daily walkaround inspection expense and the periodicmaintenance expense of described cost model, described oil-filled transformer each in operational process year, and the CM (a) of each year is converted respectively is the present worth CM of the 0th end of year
a(0), its computing formula is: CM
a(0)=CM (a) * (1+i)
-a=(the periodicmaintenance expense of daily walkaround inspection expense+a of a) * (1+i)
-a, pass through the present worth CM of each year again
a(0) calculates the final value CM of each year
a(n)=CM
a(0) * (1+i)
nThe present worth CM that each is annual
a(0) and final value CM
a(n) add up respectively, can obtain the present worth CM (0) and the final value CM (n) of the repair and maintenance expense of described oil-filled transformer in cycle life-cycle:
Then, estimate trouble hunting expense and the breakdown loss expense of described oil-filled transformer in operational process according to described cost model.For oil-filled transformer, in described cost model, the failure rate of the trouble hunting expense of a=(the removal fault oil-filled transformer expense+new oil-filled transformer expense of transportation fault oil-filled transformer expense+transportation+new oil-filled transformer expense of installation) * a; The failure rate of the breakdown loss expense of a=(loss of outage expense+new oil-filled transformer purchase commodity) * a, loss of outage expense=loss of outage load * power off time * supplied electricity rate * (1+ electricity price rate of growth)
aWherein, the failure rate of a is the annual failure rate.
Then, according to described cost model, described oil-filled transformer trouble hunting expense in operational process and the breakdown loss expense of trouble hunting expense+a of breakdown loss expense failure cost CF (a)=a of calculating each year, and the CF (a) of each year is converted respectively is the present worth CF of the 0th end of year
a(0), its computing formula is: CF
a(0)=CF (a) * (1+i)
-a=(the breakdown loss expense of trouble hunting expense+a of a) * (1+i)
-a, pass through the present worth CF of each year again
a(0) calculates the final value CF of each year
a(n)=CF
a(0) * (1+i)
nThe present worth CF that each is annual
a(0) and final value CF
a(n) add up respectively, can obtain the present worth CF (0) and the final value CF (n) of the failure cost of described oil-filled transformer in cycle life-cycle:
Equipment salvage value when disposal costs when then, estimating that according to described cost model described oil-filled transformer is retired and described oil-filled transformer are retired.In described cost model, the general assembly (TW) of the equipment salvage value=described oil-filled transformer when described oil-filled transformer is retired * on average reclaim valency, the direct construction cost of disposal costs when described oil-filled transformer is retired=removal coefficient * install, wherein, the initial value of described removal coefficient is set to 46.8%.
Then, equipment salvage value according to described cost model, disposal costs when described oil-filled transformer is retired and described oil-filled transformer when retired is calculated the equipment salvage value of oil-filled transformer when the disposal costs-oil-filled transformer that calculates then retired disposal costs final value CD (n) of termination=when oil-filled transformer is retired is retired, and be the present worth CD (0) of the 0th end of year with this final value CD (n) conversion, CD (0)=CD (n) * (1+i) then
-n=(disposal costs when described oil-filled transformer is retired-when described oil-filled transformer is retired equipment salvage value) * (1+i)
-n
At last, according to the result of described cost model and the aforementioned general expenses that estimates, calculate the life-cycle period expense (LCC) of described oil-filled transformer.In the described cost model of present embodiment, the present worth LCC of described oil-filled transformer (0)=for the first time drops into the present worth CD (0) of present worth CF (0)+retired disposal costs of oil-filled transformer of present worth CM (0)+failure cost of present worth CO (0)+repair and maintenance expense of present worth CI (the 0)+operating cost of expense; The final value LCC of described oil-filled transformer (n)=for the first time drops into the final value CD (n) of final value CF (n)+retired disposal costs of oil-filled transformer of final value CM (n)+failure cost of final value CO (n)+repair and maintenance expense of final value CI (the n)+operating cost of expense.
In addition, sequence of steps of the present invention is not to exceed with present embodiment, those skilled in the art can carry out corresponding according to actual conditions and adjust, for example, also can estimate trouble hunting expense and the breakdown loss expense of described oil-filled transformer in operational process earlier, estimate the daily walkaround inspection expense of described oil-filled transformer each in operational process year and periodicmaintenance expense etc. again.
In sum, for the 10kV oil-filled transformer, its copper loss and iron loss index are embodied in oil-filled transformer respectively to be had in load-loss expense and the transformer noload losses expense; And the temperature measurement value, short-circuit test deformation situation, available rate (being failure rate) then is embodied in trouble hunting expense and the breakdown loss expense, because if set the standard year failure rate of oil-filled transformer is x time/100 year, with 0 time/100 year is that starting point is calculated, in anti-short circuit capability test procedure (it includes test deformation situation), each defective then failure rate of step increases x time/100 year, the temperature rise test temperature rise whenever be above standard 1K then failure rate increase 3x time/100 year, estimate trouble hunting expense and the breakdown loss expense of failure rate of each year thus to calculate corresponding each year.Therefore, oil-filled transformer costimating system based on the overall life cycle cost model of the present invention according to oil-filled transformer from purchasing retired life-cycle cycle characteristics, the expense that oil-filled transformer was taken place in whole serviceable life is effectively estimated, compare with existing evaluating system, the present invention is with the available rate of oil-filled transformer, loss, the temperature measurement value, indexs such as short-circuit test deformation situation are included estimation in, make enterprise's management to cost when purchasing oil-filled transformer more reasonable, also can make enterprise know the required expense that expends in cycle life-cycle of oil-filled transformer, so that more efficiently oil-filled transformer is managed, further reduce the cost of enterprise, effectively save social resources.
Claims (12)
1. the oil-filled transformer cost-estimate method based on the overall life cycle cost model is characterized in that, comprises step:
1) sets up oil-filled transformer from buying the cost model that concerns between spent general expenses of retired cycle life-cycle and the cost, wherein, described general expenses comprises the first input expense that produces when buying oil-filled transformer, the operating cost that produces in the oil-filled transformer use, repair and maintenance expense, failure cost, and the retired disposal costs that produces when retired of oil-filled transformer;
2) estimate the present worth and the final value of the first input expense of described oil-filled transformer according to described cost model, described first input expense comprises purchase commodity, Installation and Debugging expense and the necessary testing expenses of oil-filled transformer;
3) estimate the present worth and the final value of the operating cost of described oil-filled transformer according to described cost model, described operating cost comprises energy consumption cost and the expenses of environmental protection of oil-filled transformer in operational process;
4) estimate the present worth and the final value of the repair and maintenance expense of described oil-filled transformer according to described cost model, described repair and maintenance expense comprises daily walkaround inspection expense and the periodicmaintenance expense of oil-filled transformer in operational process;
5) estimate the present worth and the final value of the failure cost of described oil-filled transformer according to described cost model, described failure cost comprises trouble hunting expense and the breakdown loss expense of oil-filled transformer in operational process;
6) estimate the present worth and the final value of the retired disposal costs of described oil-filled transformer according to described cost model, described retired disposal costs is the expense after the disposal costs deduction equipment salvage value of oil-filled transformer when retired;
7), calculate described oil-filled transformer total present worth and final value in cycle life-cycle according to the present worth and the final value of the first input expense that is estimated, operating cost, repair and maintenance expense, failure cost, retired disposal costs.
2. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1 is characterized in that: described oil-filled transformer is the 10kV oil-filled transformer.
3. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1, it is characterized in that: in described cost model, described purchase commodity=oil-filled transformer is bought and is taken+the on-the-spot service fee+specific purpose tool expense+first standby redundancy expense+supplier's traffic expense+relevant expenses of taxation+premium of insurance, the debugging charge before described Installation and Debugging expense=proprietor builds expense+described oil-filled transformer that the buildings that is used to lay described oil-filled transformer pays and puts into operation.
4. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 3, it is characterized in that: the testing expenses of present worth CI (0)=described purchase commodity+described Installation and Debugging expense+described necessity of first input expense described step 2), drop into final value CI (the n)=CI (0) * (1+i) of expense for the first time
n, wherein, n is the total year number in cycle life-cycle, i is the interest rate in cycle life-cycle.
5. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1, it is characterized in that: if in the described cost model, cycle life-cycle is n, then open circuit loss expense+described oil-filled transformer a's of the energy consumption cost of a among the n=described oil-filled transformer a has load-loss expense, hours run * cost electricity price of open circuit loss expense=open circuit loss value * described oil-filled transformer a of described oil-filled transformer a * (a 1+ electricity price rate of growth)
a, described oil-filled transformer a has load-loss expense=have hours run * rate of load condensate of load-loss value * described oil-filled transformer a
2* cost electricity price * (1+ electricity price rate of growth)
aThe expenses of environmental protection of a is determined according to the actual expenses of environmental protection that takes place in the corresponding time period, it comprises that operating described oil-filled transformer is for satisfying the environmental fines that environmental requirement needs the expense of ancillary cost and needs payment, if expenses of environmental protection does not take place, then the expenses of environmental protection of corresponding time period is 0.
6. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 5 is characterized in that: being provided with the operating cost conversion that each is annual in described cost model is the present worth parameters C O of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CO
a(n), wherein, CO
a(0)=(expenses of environmental protection of the energy consumption cost of a+a) * (1+i)
-a, CO
a(n)=CO
a(0) * (1+i)
n, n is the total year number in cycle life-cycle, and i is the interest rate in cycle life-cycle, and the present worth CO (0) of the operating cost in the then described step 3) and final value CO (n) are respectively each annual present worth parameters C O
a(0) and terminal parameter CO
a(n) summation.
7. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1, it is characterized in that: if in the described cost model, cycle life-cycle is n, the required tour cost of equipment+Master Cost+tour labour cost of daily walkaround inspection of the daily walkaround inspection expense=a of a among the n is then maked an inspection tour unit wage * (the 1+ wage growth rate) of labour cost=unit monitoring time correspondence
a* monitoring time * patrol and examine number of times; The periodicmaintenance expense of a is determined according to the time requirement of periodicmaintenance, if there is not the generating period maintenance cost, then is 0.
8. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 7 is characterized in that: being provided with the repair and maintenance expense conversion that each is annual in described cost model is the present worth parameters C M of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CM
a(n), wherein, CM
a(0)=(the periodicmaintenance expense of daily walkaround inspection expense+a of a) * (1+i)
-a, CM
a(n)=CM
a(0) * (1+i)
n, n is the total year number in cycle life-cycle, and i is the interest rate in cycle life-cycle, and the present worth CM (0) of the repair and maintenance expense in the then described step 4) and final value CM (n) are respectively each annual present worth parameters C M
a(0) and terminal parameter CM
a(n) summation.
9. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1, it is characterized in that: if in the described cost model, cycle life-cycle is n, then the failure rate of the trouble hunting expense of a among the n=(the removal fault oil-filled transformer expense+new oil-filled transformer expense of transportation fault oil-filled transformer expense+transportation+new oil-filled transformer expense of installation) * a; The failure rate of the breakdown loss expense of a=(loss of outage expense+new oil-filled transformer purchase commodity) * a, loss of outage expense=loss of outage load * power off time * supplied electricity rate * (1+ electricity price rate of growth)
a, wherein, the failure rate of a is the annual failure rate.
10. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 9 is characterized in that: being provided with the failure cost conversion that each is annual in described cost model is the present worth parameters C F of the present worth of the 0th end of year
a(0) and corresponding terminal parameter CF
a(n), wherein, CF
a(0)=(the breakdown loss expense of trouble hunting expense+a of a) * (1+i)
-a, CF
a(n)=CF
a(0) * (1+i)
n, n is the total year number in cycle life-cycle, and i is the interest rate in cycle life-cycle, and the present worth CF (0) of the failure cost in the then described step 5) and final value CF (n) are respectively each annual present worth parameters C F
a(0) and terminal parameter CF
a(n) summation.
11. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 1, it is characterized in that: in described cost model, the general assembly (TW) of the equipment salvage value=described oil-filled transformer when described oil-filled transformer is retired * on average reclaim valency, the direct construction cost of the disposal costs when described oil-filled transformer is retired=removal coefficient * install.
12. the oil-filled transformer cost-estimate method based on the overall life cycle cost model as claimed in claim 11 is characterized in that: the present worth CD of retired disposal costs (0) in the described step 6)=(disposal costs when described oil-filled transformer is retired-when described oil-filled transformer is retired equipment salvage value) * (1+i)
-n, the final value CD of retired disposal costs (n)=CD (0) * (1+i)
n, n is the total year number in described cycle life-cycle, i is the interest rate in cycle life-cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046017A CN101799889A (en) | 2009-02-06 | 2009-02-06 | Expense estimation method of oil immersed transformer based on whole life cycle cost model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910046017A CN101799889A (en) | 2009-02-06 | 2009-02-06 | Expense estimation method of oil immersed transformer based on whole life cycle cost model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101799889A true CN101799889A (en) | 2010-08-11 |
Family
ID=42595560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910046017A Pending CN101799889A (en) | 2009-02-06 | 2009-02-06 | Expense estimation method of oil immersed transformer based on whole life cycle cost model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101799889A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930123A (en) * | 2011-08-08 | 2013-02-13 | 华东电力试验研究院有限公司 | Computing method and computing system for whole life cycle cost of cable |
| CN103308800A (en) * | 2013-06-03 | 2013-09-18 | 国家电网公司 | LCAM (life cycle asset management) real-time evaluating system and evaluating method for power transformer based on real-time monitoring |
| CN104573351A (en) * | 2014-12-29 | 2015-04-29 | 云南电网公司电力科学研究院 | Method for calculating full life circle of transmission line |
| CN106326658A (en) * | 2016-08-25 | 2017-01-11 | 石家庄铁道大学 | Whole life cycle cost and effectiveness evaluation method of power transformer |
-
2009
- 2009-02-06 CN CN200910046017A patent/CN101799889A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930123A (en) * | 2011-08-08 | 2013-02-13 | 华东电力试验研究院有限公司 | Computing method and computing system for whole life cycle cost of cable |
| CN103308800A (en) * | 2013-06-03 | 2013-09-18 | 国家电网公司 | LCAM (life cycle asset management) real-time evaluating system and evaluating method for power transformer based on real-time monitoring |
| CN103308800B (en) * | 2013-06-03 | 2015-12-23 | 国家电网公司 | Based on the power transformer LCAM real time evaluating method of Real-Time Monitoring |
| CN104573351A (en) * | 2014-12-29 | 2015-04-29 | 云南电网公司电力科学研究院 | Method for calculating full life circle of transmission line |
| CN106326658A (en) * | 2016-08-25 | 2017-01-11 | 石家庄铁道大学 | Whole life cycle cost and effectiveness evaluation method of power transformer |
| CN106326658B (en) * | 2016-08-25 | 2019-05-17 | 石家庄铁道大学 | A kind of power transformer overall life cycle cost efficiency estimation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102495967B (en) | Method for calculating repair cycle of power transformer in operation | |
| Cohen et al. | Optimizing post-combustion CO2 capture in response to volatile electricity prices | |
| CN101800402A (en) | Expense estimation method of prefabricated substation based on whole life cycle cost model | |
| CN104715294A (en) | Distribution network planning scheme evaluation data processing system | |
| CN102855402A (en) | Power grid economy evaluation data processing system based on life cycle cost | |
| CN104268370A (en) | Method for calculating life-cycle energy consumption of power grid equipment | |
| CN102930123A (en) | Computing method and computing system for whole life cycle cost of cable | |
| CN106058851A (en) | Electric power resource configuration method and system based on demand response | |
| CN101799889A (en) | Expense estimation method of oil immersed transformer based on whole life cycle cost model | |
| CN106786549A (en) | A kind of comprehensive benefit analysis method based on intelligent distribution network cost-benefit model | |
| CN105809529A (en) | Power system secondary equipment full life cycle cost decomposition method | |
| JP2014095941A (en) | Photovoltaic power generation output estimation device | |
| CN117689160A (en) | Window visual method and system based on power scheduling day plan | |
| CN106779298A (en) | The grid equipment level lifecycle management succeeding year method of cost accounting | |
| Backer | Power quality and asset management the other" two-thirds" of AMI value | |
| CN107316154A (en) | Extra-high voltage flexible DC power transmission equips evaluation of life cycle cost method | |
| CN105608525A (en) | Whole life cycle-used substation environmental protection investment calculation method | |
| CN114819652A (en) | Intelligent fixed asset management method and system based on block chain | |
| CN101446985A (en) | LCC control method for power system equipment | |
| CN109165818B (en) | Negative point calculation method for risk assessment of electrical equipment | |
| Khan et al. | Reduction in Weighted Average Cost of Generation by Utilizing ToU Pricing Models: A Study from Pakistan | |
| CN201126592Y (en) | LCC control apparatus for power system equipment | |
| Meng et al. | Research on the Automatic Recheck System and Maintenance Technology for Dismantled Electric Energy Meters | |
| CN117200256A (en) | Power grid real-time operation frequency modulation capacity early warning method and system | |
| CN105488724A (en) | Method for calculating environmental protection investment in operating process of transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100811 |