CN110119879A - A kind of power engineering life cycle cost research method based on system dynamics - Google Patents
A kind of power engineering life cycle cost research method based on system dynamics Download PDFInfo
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Abstract
The power engineering life cycle cost research method based on system dynamics that the invention discloses a kind of, comprising the following steps: S1, calculate early-stage preparations expense；Early-stage preparations expense includes feasibility study cost, basic reserve fund early period；S2, construction cost is calculated；Construction cost includes Construction And Install Ation Cost, basic preliminary expenses, interest incurred during construction, activity charge, price differential reserve fund, project construction management expense；S3, operation maintenance expense is calculated；Operation maintenance expense includes overhaul expense, maintenance cost, finance charge, labour cost；S4, waste disposal expense is calculated；Waste disposal expense includes residual value, removal cost and waste treatment other fees；S5, it is calculated by early-stage preparations expense, construction cost, operation maintenance expense, waste disposal expense, obtains power engineering life cycle cost.
Description
Technical field
The present invention relates to electricity power engineering field more particularly to a kind of power engineering life cycle costs based on system dynamics
Research method.
Background technique
System dynamics (system dynamics, SD) is that System Science is combined with computer simulation technique, is ground
Study carefully the science of system feedback structure and behavior.SD thinks that the behavior pattern and characteristic of system are by the organic connection of each section and phase
What interaction embodied, correct conclusion should can be just obtained using whole system as a feedback system.System with environment and when
Between develop, the influence of outer bound pair system and the interaction of internal system constitute the power of System Development, and this power can be with
With causality quantization means.SD emulation not only can macroscopically hold the trend of things development, but also can analyze internal system
The interaction relationship of microcosmic influence factors.
Overall life cycle cost mainly includes 4 parts: early-stage preparations stepped cost, implementation phase cost, operation stage
Cost, waste disposal stepped cost, studying the power engineering overall life cycle cost obtained on the market now only is all to preceding
Preparation stage phase cost, implementation phase cost, operation stage cost, waste disposal stepped cost probably estimated, and by its
Summation, still, each stage is all mutually to restrict, and interactional, therefore, calculated overall life cycle cost is inaccurate
True, this will bring strong influence to the research of power engineering.
Summary of the invention
Object of the present invention is in view of the above-mentioned problems, provide it is a kind of improve overall life cycle cost calculated result based on system
Dynamic (dynamical) power engineering life cycle cost research method.
To achieve the goals above, the technical scheme is that
A kind of power engineering life cycle cost research method based on system dynamics, comprising the following steps:
S1, early-stage preparations expense is calculated；Early-stage preparations expense includes feasibility study cost, basic reserve fund early period；
S2, construction cost is calculated；Construction cost includes Construction And Install Ation Cost, basic preliminary expenses, builds
If phase interest, activity charge, price differential reserve fund, project construction management take；
S3, operation maintenance expense is calculated；Operation maintenance expense includes overhaul expense, maintenance cost, finance charge, labour cost；
S4, waste disposal expense is calculated；Waste disposal expense includes other expenses of residual value, removal cost and waste treatment
With；
S5, it is calculated, is obtained by early-stage preparations expense, construction cost, operation maintenance expense, waste disposal expense
To power engineering life cycle cost.
Further, step S1 mid-early stage basic preliminary expenses=(construction land takes+construction project technical service fee
+ intangible asset+equipment and Work tool purchase commodity+project's earlier stage implementation management expense) * rate；Construction land takes=construction place sign
Ground and cleaning take+cultivated land use tax；Construction project technical service fee=survey and design expense+design document evaluation takes+project's earlier stage
Working expenditure；Equipment and Work tool purchase commodity=installation cost+equipment freight and miscellaneous charges；Equipment freight and miscellaneous charges=installation cost * equipment freight and miscellaneous charges takes
Rate；Intangible asset=country's patented technology usage charges+foreign design and technology information expense.
Further, Construction And Install Ation Cost=installing engineering expense+architectural engineering expense in the step S2；Installing engineering
Take=other equipment installation fee+transformer equipment installation fee+transmission facility installation+communication and control equipment installation cost；Architectural engineering
Take=traffic engineering expense+foundation engineering expense+construction ancillary works expense+building construction expense；It constructs basic preliminary expenses=(fixed
Assets+Construction And Install Ation Cost+intangible asset) * rate；Interest incurred during construction=construction investment loan value * EXP (construction period * LN
(1+ interest rate))-construction investment loan value；Construction investment loan value=project construction investment-one's own reserves；Activity charge=price differential
Reserve fund+interest incurred during construction；Wherein, e is annual cost rise index；n1To build
If budget compilation forcasted years are to engineering year interval；n2For the engineering construction period.
Further, overhaul expense=fixed assets * general overhaul rate in the step S3；Maintenance cost=fixed assets * days
Often maintenance rate；Finance charge=loan of operating fund volume * interest rate+[operation phase long-term loan volume * (1+ interest rate) n)-it is long to run the phase
Phase loan value)]/service life；Loan of operating fund volume=circulating fund * loan of operating fund ratio；Operation phase long-term loan
Volume=interest incurred during construction+construction investment loan value；Labour cost=artificial the quantity of per capita salary *.
Further, residual value=original value of fixed assets * salvage value rate in the step S4.
Compared with prior art, the advantages and positive effects of the present invention are:
The present invention establish overall life cycle cost system and by overall life cycle cost system be divided into early-stage preparations at
This system, construction COST system, cost of use system and discarding system；It is respectively to early-stage preparations COST system, construction
Construction cost system, cost of use system, discarding system are analyzed, and the influence by the system to other systems has been made entirely
Face research, then calculates separately out early-stage preparations expense, construction cost, waste disposal expense, waste disposal expense, most
Afterwards, it is calculated by early-stage preparations expense, construction cost, waste disposal expense, waste disposal expense, obtains electric power work
The overall life cycle cost of journey, hence it is evident that the accuracy for improving overall life cycle cost is brought to the construction budget of power engineering
Great contribution.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is early-stage preparations expense causality figure；
Fig. 2 is that early-stage preparations expense cause and effect is tree-shaped；
Fig. 3 is implementation cost causality figure；
Fig. 4 is construction expense cause and effect dendrogram；
Fig. 5 is operation maintenance cost causality figure；
Fig. 6 is operating cost cause and effect dendrogram；
Fig. 7 is operating cost cause and effect dendrogram；
Fig. 8 is maintenance cost cause and effect dendrogram；
Fig. 9 is failure cost cause and effect dendrogram；
Figure 10 is failure cost causality figure；
Figure 11 is power engineering construction scale causality figure；
Figure 12 is waste disposal expense causality figure；
Figure 13 is overall life cycle cost storage flow diagram；
Figure 14 is overall life cycle cost change rate；
Figure 15 is overall life cycle cost change curve；
Figure 16 is early-stage preparations stage system flow graph；
Figure 17 is early-stage preparations cost change rate；
Figure 18 is early-stage preparations expense change curve；
Figure 19 is construction stage system flow graph；
Figure 20 is construction cost change rate；
Figure 21 is construction expense change curve；
Figure 22 is operation and maintenance cost change rate；
Figure 23 is operation and maintenance cost change curve；
Figure 24 is waste disposal cost flow graph；
Figure 25 is waste disposal cost change rate；
Figure 26 is waste disposal expense change curve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
The causal building of life cycle management
Overall life cycle cost system is divided into the early-stage preparations COST system constructed by the early-stage preparations stage, construction rank
The construction COST system of section building, cost of use stage enough low-priced cost of use system and waste disposal stage construct useless
Abandon disposal costs system.Overall life cycle cost is the sum of each stepped cost of electric power construction projects, but is not by each rank
Duan Chengben is simply superimposed, because the cost in each stage is mutually to restrict, is influenced each other, is connected each other.Such as: purchase
More advanced equipment can generally reduce the operation cost of service stage, so should carry out to the overall life cycle cost of construction project
Systematically analyze.
Influence of the early-stage preparations stage to operation maintenance expense
Early-stage preparations expense refers mainly to the general expenses occurred in the decision of power engineering project and design phase, main to take
With having: early period basic reserve fund, feasibility study cost, construction project technical service fee, prospective design cost, project's earlier stage build
If management class is taken.In relation to research shows that: influence of the investment decision phase to program full-life period cost is up to 95% or more, just
Walking the design phase is 75%~95%, and the definition phase is 35~75%, and the construction documents design phase is 12%~35%.Cause
This, plays key effect to the control of expense in this stage.
Early-stage preparations expense is built by the variables such as estimation investment, bidding costs, survey and design expense charging volume and construction
It makes expense system to connect, the feasibility study in early-stage preparations stage and prospective design again can building expense to the later period and uses
Expense has an impact, and is specifically shown in Fig. 1.
The reason of forming early-stage preparations expense causality tree and use tree are as shown in Figure 2:
There is primary feedback circuit in early-stage preparations expense system:
1, early-stage preparations expense →+costvariation →-bid takes →+project's earlier stage implementation management expense →+early-stage preparations expense
With
2, early-stage preparations expense →+costvariation →-construction project technical service fee →+early-stage preparations expense
3, early-stage preparations expense →+costvariation →-survey and design expense →+early-stage preparations expense
4, early-stage preparations expense →+costvariation →-feasibility study takes →+early-stage preparations expense
5, early-stage preparations expense →+investment estimate volume →+feasibility study takes →+early-stage preparations expense
The factor in early-stage preparations effect stepwise construction stage:
Feasibility study takes: restriction of the early-stage preparations expense by electricity power engineering design scale, generates self-regulatory mechanism.
As can be seen that feasibility study takes in the crosspoint in place positive and negative feedback circuit, while being influenced by two circuits.To feasibility
Research expense carries out the analysis of reason tree, and discovery feasibility study takes not only by construction phase build an fixing fire, equipment and Work tool
The influence of the factors such as purchase commodity, reserve fund is also influenced by own system early-stage preparations expense, and early-stage preparations expense is built
Project Technical service charge, estimation investment, project's earlier stage implementation management expense, survey and design expense, bid cost, feasibility study
The influence taken.As it can be seen that feasibility study, which takes, not only to be influenced by construction expense system, also with the internal system other factors
It connects each other.
Bid expense: bid takes the implementation management expense for not only influencing project's earlier stage, but also the contract cost of its bid and trick are thrown
Mark cost also influences whether the cost of construction and erection works of Construction phase.
Survey and design expense: the design phase in early-stage preparations stage directly affects the quality and expense of construction stage quality
With the result in the general expenses prospective design stage such as construction and installation, freight and miscellaneous charges is closely bound up.
Interest incurred during construction: the investment loan volume and the design result phase in early-stage preparations stage of interest incurred during construction influence project
Connection, and interest incurred during construction also will affect the fixed assets output value of construction stage formation, to be caused to the construction stage
It influences.
Building installation engineering expense: the design phase of early period directly returns the building embodiment for influencing the construction stage,
Fixed assets is affected to influence building and installing engineering expense, the component part important as construction stage fixed assets
It produces and each expense of operation and maintenance stage.
Equipment and Work tool purchase commodity: analysis of the Design of Construction Organization file to the service condition of equipment and Work tool early period
With design, the purchase commodity and usage charges of equipment and Work tool are influenced, to affect the formation of construction phase fixed assets.
The factor of early-stage preparations effect stepwise operation and maintenance stage:
Original equipment cost: early investment management include the demand of equipment formulate, type selecting buying, commercial bid, contract signing,
The process transferred is checked and accepted in installation and debugging, and making rational planning for for early investment stage determines in life period of an equipment with type selecting
Total cost determines the cost structure in enterprise production and management, total cost, that is, acquisition expenses and fortune in equipment life cycle management
The summation of dimension expense determines the cost structure in enterprise production and management.
Equipment purchase cost is that product cost is transferred in the form of depreciation, is the pith for constituting product fixed cost,
O&M expense includes energy source and power and operator, maintenance cost etc., directly affects the variable cost of product.
Feasibility study takes: the reasonable control of equipment life cycle management whole cost directly determines the cost manufactured
Just, the market competitiveness and effectiveness of operation of enterprise are determined.The preconsolidation stress and type selecting of equipment can influence the life-cycle
80% or more of period total cost, under the premise of meeting production and application, the planning of equipment and type selecting determine that the production of enterprise is imitated
Rate, ease for use, reliability and the failure rate for producing quality, the degree of reliability, energy expenditure and equipment etc. problem.
Preceding 4 circuits are negative feedback loops, illustrate restriction of the early-stage preparations expense by electricity power engineering design scale, are generated
Self-regulatory mechanism.Circuit 5 is positive feedback loop, generates self-enhancement trend.Locating just it can also be seen that feasibility study takes
The crosspoint of negative feedback loop, while being influenced by two circuits.Feasibility study is taken and carries out the analysis of reason tree, discovery can
Row Journal of Sex Research, which takes, not only to be influenced by the factors such as construction phase build an fixing fire, equipment and Work tool purchase commodity, reserve fund, also
It is influenced by own system early-stage preparations expense, and early-stage preparations expense is by construction project technical service fee, estimation investment, item
The influence that the expense of phase implementation management at present, survey and design expense, bid cost, feasibility study take.As it can be seen that feasibility study takes not
It is only influenced by construction expense system, is also connected each other with the internal system other factors.Bid expense not only influences project
The implementation management expense of early period, and the contract cost of its bid and bidding costs also influence whether Construction phase build peace
Engineering cost.
Influence of the construction COST system to operation maintenance expense
Construction cost includes Construction And Install Ation Cost, basic preliminary expenses, interest incurred during construction, activity charge, valence
Poor reserve fund, project construction management take；The system mainly pass through loan value, build an fixing fire, project implementation phase other fees,
The factors such as Over-size transport measure expense, project implementation phase other fees, activity charge, basic reserve fund have been coupled with other systems
Come.Loan value is by early-stage preparations cost impacts, and feasibility study stage once establishes the scale of investment of electricity power engineering construction
And the Investment Allocation situation of various auxiliary facilities, designer target limit will select corresponding design scheme accordingly, this
A target investment is also to influence the primary factor of construction cost.Build an fixing fire can be to cost of use and last discarded dismounting
Expense has an impact, and sees Fig. 3, Fig. 4.
There is primary feedback circuit in the system:
1, construction expense →+costvariation →-building installation engineering takes →+construction expense
2, construction expense →+costvariation →-building installation engineering takes →+project supervision charging volume →+engineering prison
Reason takes →+project construction management expense →+project implementation phase other fees →+construction expense
3, construction expense →+costvariation →-building installation engineering takes →+basic reserve fund →+construction expense
With
4, construction expense →+costvariation →-building installation engineering takes →+project supervision charging volume →+engineering prison
Reason takes →+basic reserve fund →+construction expense
5, construction expense →+costvariation →-project implementation phase other fees →+construction expense
6, construction expense →+costvariation →-building installation engineering takes →+project supervision charging volume →+engineering prison
Reason takes →+basic reserve fund →+construction expense
7, construction expense →+costvariation →-building installation engineering takes →+basic reserve fund →+construction expense
With
8, construction expense →+costvariation →-project implementation phase other fees →+construction expense
9, construction expense →+loan value →+interest incurred during construction →+activity charge →+construction expense construction is built
Making implementation phase influences the factor in early-stage preparations stage:
Basic reserve fund: interest incurred during construction is influenced by internal system factor.It can be seen that basic reserve fund is not only by outside
Early-stage preparations expense system influences, and contacts with internal system factor.Reserve fund by early-stage preparations expense system construction land
Take, construction project technical service fee, intangible asset, project's earlier stage implementation management expense and implementation phase formed fixed assets (no
Including construction and installation expense), Construction And Install Ation Cost, construction expense constituted, therefore early-stage preparations stage and construction are built
The basic reserve fund for making the stage influences each other.
Project supervision expense: project supervision expense and internal system factor build an fixing fire and equipment and Work tool purchase commodity are mutual
Connection, and influence whether the preliminary expenses of construction stage.Other costs of project implementation phase are also influenced by reserve fund, thus
It is also connected each other with external early-stage preparations expense system.
The factor of construction effect stepwise operation and maintenance stage:
Building installation engineering is taken: building and installing engineering expense, the composition portion important as construction stage fixed assets
Point, fixed assets are affected, to have an impact to the maintenance cost in operation and maintenance stage.
Activity charge: activity charge, which refers to, is building budget compilation year to final acceptance of construction to each element for constituting project cost
Period, rise in price and fund time cost increase expense occurred caused by changing because of time and the market price, main to wrap
Include price differential reserve fund and construction period loan interest.
Basic reserve fund: basic reserve fund predominantly solves design alteration and state approved by the higher authorities in the construction process
The increased investment of policy adjustment institute, family and take measures increased engineering project and expense for solution contingency, again
Claim engineering construction contingency sum.Generally refer mainly to design alteration and engineering construction contingency sum.The base of early period and construction time
This reserve fund control deficiency can have an impact the operation of operation phase and lucrative income.
Preceding 8 circuits are negative feedback loops, generate self-regulatory mechanism.Circuit 9 is positive feedback loop, generates self-enhancement
Trend illustrates that interest incurred during construction is influenced by internal system factor.It can be seen that basic reserve fund is not only by external early-stage preparations expense
With systematic influence, and contacted with internal system factor.Reserve fund taken by the construction land of early-stage preparations expense system, construction project
The fixed assets that technical service fee, intangible asset, project's earlier stage implementation management expense and implementation phase are formed (do not include construction and installation
Expense), Construction And Install Ation Cost, construction expense constituted, therefore early-stage preparations stage and construction stage is basic
Reserve fund influences each other.Project supervision expense is mutually interconnected with internal system factor build an fixing fire and equipment and Work tool purchase commodity
System, and influence whether the preliminary expenses of construction stage.Other costs of project implementation phase are also influenced by reserve fund, thus with
External early-stage preparations expense system also connects each other.
Operation maintenance expense system
O&M cost is mainly made of three operating cost, maintenance cost, failure cost parts.Operation maintenance cost cause and effect
Relational graph is as shown in Fig. 5 to Figure 11:
1) operating cost refer to wind power plant operation during institute's cost synthesis, comprising: administration fee, insurance premium,
Master Cost.
Administration fee includes two aspects, first is that the wage of wind power plant current check and tour personnel, welfare fund, training
Take, subsidize, is to maintain, monitor the cost that wind power plant operates normally generation, in the premise for meeting operation with maintenance requirements
Under, realize that structure of personnel is optimal；Second is that internal control expense, by formulating norm for detailed estimates, strict implement expense examination and approval system makes
Expense is effectively controlled.
Master Cost refers to wind power plant in daily periodic maintenance, operation, and necessary material, standby redundancy take and revolving
Material amortization charge.
2) maintenance cost refers to Wind turbines after running one period, and certain structure and functions of equipment can durability decline
Or failure, when dropping to a certain critical state, be restorer reliability, improve the operational efficiency of equipment, to blower into
The expense that row Measuring error is paid.It refers specifically to carry out Wind turbines daily maintenance, maintenance and the replacement to its components,
In the case where not interrupting power generation, the expense of test and professional general overhaul cost to equipment.Maintenance cost is according to maintenance degree
And time interval, it is divided into two class of daily maintenance and overhaul.Intelligent substation daily maintenance expense has compared conventional substation
Decline, content is the same, comprising: electric equipment maintenance, the cost and labour cost, fee of material for replacing spare and accessory parts.Safeguard from
The work of a large amount of technical staff is not opened, and the maintenance cost of power equipment will gradually increase as intelligent substation runing time increases
Long, overhaul frequency also can be higher and higher,
Until scrapping.
3) failure cost Producing reason is the component abnormal running of equipment, and component, which breaks down, generates breakdown maintenance expense
Take with failure damage.
Failure rate is the probability that equipment breaks down, and can refer to data and the state information of previous years to obtain.If
It is the failure cost for the Fan Equipment being currently running, is referred to over the data that actually spend to calculate.Breakdown maintenance expense packet
It includes the field failure cost of overhaul and apparatus assembly returns the expense of factory's generation.The field failure cost of overhaul includes setting for producer and power engineering
It is standby take, fee of material, service charge and labour cost, equipment return the traffic expense that factory's price for repairing includes equipment, lifting cost and price for repairing and industry
Main examination expense etc..
Loss of outage refers to the power-off occurred because power supply is interrupted or deficiency or rations the power supply all to pass through caused by society
Ji loss, economic loss including power supply company itself and loses to user's bring.Wherein, electric power enterprise (including power generation
Company and electric company) loss of outage mainly include because few for (hair) electricity due to the profit that obtains less, and failure after power failure patrols
Survey and overhaul expense；The loss of user include have a power failure inconvenient to resident living bring, industry and commerce user's electrical equipment damage,
The appearance of defect ware and the profit etc. for producing product less because of power failure.Loss of outage is mainly influenced by following factor:
1) power failure frequency
Frequency of power cut is more, and loss of outage is bigger, and interference suffered by User Activity is more frequent, and power department is also required to
Put into more malfunction elimination rehabilitation expense and Unit Commitment expense.
2) power failure amount
Electric network reliability level is higher, due to failure caused by scope of power outage it is smaller, power failure amount is just smaller, loss of outage
With regard to smaller.
3) interruption duration
In general, have a power failure the initial stage, loss of outage include factory work continuously interruption, equipment damage, occur it is residual
Substandard products etc., unit power failure cost increase with the extension of interruption duration.After power failure continues for some time, loss of outage master
If adding expense and the profit of product yield reduction caused by backup power source, therefore interruption duration is more than that certain is critical
After value, unit power failure cost gradually tends towards stability.
4) user type
Different types of user, power mode is different with power failure characteristic, and to having a power failure, patient degree is also different, therefore
Power failure is lost also different caused by it.
Construction scale generally refers to whole designed productive capacity, benefit or investment specified in project feasibility studies report
Total scale, also known as production scale.The construction scale of power engineering determines the power supply capacity of project, also restricts economy and engineering
The development adaptability respectively formed.
Waste disposal expense system
Waste disposal stage cost impacts because being known as residual value, removal cost and waste treatment other fees etc., but
It is embodied generally in the form of net residual value in real cost estimation, net residual value is by net salvage and electricity power engineering project fixed assets
The output value is calculated.System is longer using the time, and residual value will be fewer；The fixed assets output value is then built by early-stage preparations expense and construction
It makes expense to be formed, thus the system is organically tied with other systems, is detailed in Figure 12.
There is primary feedback circuit in the system:
1, residual value →-waste disposal takes →-overall life cycle cost →+costvariation →-construction expense →+residual value
2, residual value →-waste disposal takes →-overall life cycle cost →+costvariation →-early-stage preparations expense →+residual value
3, residual value →-waste disposal take →-overall life cycle cost →+costvariation →-construction expense →+it is daily
Maintenance cost →+residual value
4, residual value →-waste disposal take →-overall life cycle cost →+costvariation →-early-stage preparations expense →+it is daily
Maintenance cost →+residual value
5, residual value →-waste disposal takes →-overall life cycle cost →+costvariation →-construction expense →+overhaul
Take →+residual value
6, residual value →-waste disposal takes →-overall life cycle cost →+costvariation →-early-stage preparations expense →+overhaul
Take →+residual value
Circuit 1,2 reflects between waste disposal expense system and construction expense system and early-stage preparations expense system
Connection, the residual value in waste disposal stage are formed by fixed assets with early-stage preparations stage and implementation phase and are associated.Circuit 3,
4,5,6 connecting each other, interacting between the system and other three expense systems is embodied, illustrates residual value not only by early period
The influence for the fixed assets that preparation stage and implementation phase are formed, by operation and maintenance stage maintenance cost (overhaul expense, ordinary maintenance
Take) influence.
The influence factor in waste disposal effect stepwise early-stage preparations stage, implementation phase and operation and maintenance stage:
Power grid construction scale: the waste disposal stage shares 6 circuits, and all circuits are all negative feedback loops, passes through power grid
Construction scale of projects forms self-regulatory mechanism and is tied with other systems.
Fixed assets: the residual value in waste disposal stage is formed by fixed assets phase with early-stage preparations stage and implementation phase
Connection.
Residual value: residual value is not only influenced by the fixed assets that early-stage preparations stage and implementation phase are formed, and is tieed up by operation
The influence of shield stage maintenance cost (overhaul expense, ordinary maintenance expense).
The waste disposal stage shares 6 circuits, and all circuits are all negative feedback loops, passes through electricity power engineering construction scale shape
It is tied at self-regulatory mechanism and with other systems.Circuit 1,2 reflects waste disposal expense system and construction expense
With the connection between system and early-stage preparations expense system, the residual value in waste disposal stage and early-stage preparations stage and implementation phase institute
The fixed assets of formation are associated.Circuit 3,4,5,6 embody connecting each other between the system and other three expense systems,
Interaction illustrates that residual value is not only influenced by the fixed assets that early-stage preparations stage and implementation phase are formed, is tieed up by operation
The influence of shield stage maintenance cost (overhaul expense, ordinary maintenance expense).
The building of system flow
Life cycle management system
According to the analysis of the causality figure of front Life Cycle Cost cost, set the early-stage preparations stage as 1 year, apply
The work construction phase is 2 years, operation and maintenance stage is 20 years, the waste disposal stage is 2 years, draws life cycle management system flow such as
Shown in Figure 13.
For the expense cost of life cycle management, after importing basic data and formula, the change rate trend of life cycle management
It is as shown in figure 14:
The cost variation tendency of life cycle management 110Kv substation project is as shown in figure 15:
Early-stage preparations stage system
After the connection for determining system factor and its inherence, needing to construct system flow makes model represented by causality figure
It behaves on computers, to simulate the forming process of early-stage preparations stage each expense cost and its feelings of dynamic change
Condition.In fact, causality figure and system flow are the two kind expression ways different to same model, they are phases in itself
With, the difference is that: in order to better understand the problem of studied, causality figure arrow and text state mould
Type；Flow graph is described between each factor then with flow, storage, auxiliary variable come descriptive model with coded program and equation etc.
In relationship.According to the analysis of front early-stage preparations stage costly causality figure, the early-stage preparations stage is set as 1 year, is drawn
Early-stage preparations stage system flow graph processed is as shown in figure 16.
To in the early-stage preparations stage expense growth trend and variation analyze, become according to the variation of early-stage preparations expense
From the point of view of gesture, the early-stage preparations cost change rate between early-stage preparations 1 year is as shown in figure 17:
Early-stage preparations stage expense variation tendency is as shown in figure 18:
Construction stage system
According to the analysis of the causality figure of men working ahead construction phase expense cost, the construction stage is set as 2 years,
It is as shown in figure 19 to draw construction stage system flow graph.
To in the construction stage expense growth trend and variation analyze, become according to the variation of construction expense
From the point of view of gesture, the construction cost change rate between construction 1 year is as shown in figure 20；
Construction stage expense variation tendency is as shown in figure 21；
Operation and maintenance stage system
According to the analysis of the causality figure of front operation and maintenance stage expense cost, operation and maintenance stage is set as 2 years,
It is as shown in Figure 6 to draw operation and maintenance stage system flow.
To in operation and maintenance stage expense growth trend and variation analyze, according to the change of operation and maintenance stage expense
From the point of view of change trend, the decennary operation and maintenance stage cost change rate of operation and maintenance stage two is as shown in figure 22:
Operation and maintenance stage expense variation tendency is as shown in figure 23:
Waste disposal stage system
According to the analysis of the causality figure of front waste disposal stage expense cost, the waste disposal stage is set as 2 years,
It is as shown in figure 24 to draw waste disposal stage system flow graph.
To in the waste disposal stage expense growth trend and variation analyze, according to the change of waste disposal stage expense
From the point of view of change trend, the waste disposal cost change rate curve between 1 year waste disposal stage is as shown in figure 25:
Waste disposal stage expense trend is as shown in figure 26:
Newly-built substation project overall life cycle cost calculates analysis
Basic model parameter
It using entire electricity power engineering overall life cycle cost storage flow diagram as foundation, is illustrated in fig. 9 shown below, basic data setting
Are as follows:
Assuming that electricity power engineering life cycle management is 24 years, early-stage preparations stage duration 1 year, the construction stage is 2 years, fortune
Seeking maintenance phase is 20 years, and scrapping the disposition stage is 1 year.
(1) feasibility study takes
If the early-stage preparations time is 1 year, this engineering dynamic investment is 5789.0688 yuan, is entrusted according to national development and reform
Regulation " construction project previous work consulting charge temporary provisions ", feasibility study cost is 18.38 ten thousand yuan；
(2) design document survey fee
According to state's pipe premises (2006) 37, on 2 13rd, 2006 " the preliminary design review charging standards " printed and distributed are designed
File survey fee (project proposal assessment takes expense and feasibility study report to assess and takes expense) is 12.40 ten thousand yuan；
(3) basic reserve fund rate
The basic reserve fund rate of power engineering project is 10% (state's economy and trade electric power (2001) 867)；Preliminary expenses by
Basic reserve fund and rise in price reserve fund form, and only consider basic reserve fund in this paper calculating process.
(4) project Bidding agency is taken
Project Bidding agency service charge is 6.4612 ten thousand yuan；
Installation cost is 2157.7184 yuan；
It is 100,000 yuan that Operational preparation, which takes,；
(7) it is 76.1689 ten thousand yuan that the requisition of construction place and cleaning, which take,；
(8) survey and design expense
It is provided according to " engineering design charging standard ", engineering design charges standard price by Basic Design charge and other designs
Charge composition.Basic Design charge is only considered in the calculating of Treated sewage reusing engineering design expense herein, is taken according to construction project list
Item Budgetary Estimates investment stepping quota charging method, which calculates, charges, and 197.8514 ten thousand yuan of survey and design expense；
(9) previous work preparation takes 36.2682 ten thousand yuan；
(10) it is counted according to 2016-2018 emolument situation, the whole nation 2016-1017 average salary growth rate is 7.3%；
(11) administration fee of power construction allotment arrangement is collected according to no more than build peace workload 0.5-1.5%, is
13.47 ten thousand yuan；
(12) construction budget compilation level between the engineering year to being divided into 2 years (2016-2018)
(13) according to 2004 inventory quota rates, civilized construction rate substantially, architectural engineering is with part-to-item project amount
List item quota labor expense is 6% to take expense basic rate.
(14) according to 2004 inventory quota rates, safe construction rate substantially, architectural engineering is with part-to-item project amount
List item quota labor expense is 9% to take expense basic rate.
(15) according to 2004 inventory quota rates, temporary facility rate substantially, architectural engineering is with part-to-item project amount
List item quota labor expense is 9% to take expense basic rate.
Other basic model parameters are as shown in the table:
Overall life cycle cost cost formula
Constructing one of task of model is exactly that the relationship between the mechanism and variable of internal system is quantified.Quantization
Process is also the process of system dynamics establishing equation.Primary structure in this paper electricity power engineering overall life cycle cost SD model
Equation is as follows:
Power grid overall life cycle cost expense basic settings:
(01) Initial Time=0 decagram
Note: the initial time of overall life cycle cost is 0, unit are as follows: year
(02) Final Time=26 decagram Commissioning
Note: the time of the termination of overall life cycle cost is 27 years, unit are as follows: year
(03) TimeStep=0.5
Note: step-length is set as 0.5, unit are as follows: year
(04)UnitsforTime=year
Note: the unit of overall life cycle cost are as follows: year；
Electricity power engineering overall life cycle cost primary structure formula is as follows:
(1) early-stage preparations cost change rate=IF THEN ELSE (Time=1, survey and design expense+basic preliminary expenses+
Construction land takes+bid expense+power engineering allotment arrangement administration fee+power construction authorizing standard administration fee+equipment and Work tool
Purchase commodity+feasibility study cost, 0) Units: Wan Yuan/year
(2) early-stage preparations expense=INTEG (early-stage preparations cost change rate, 0) Units: Wan Yuan
Note: early-stage preparations expense initial value is 0, the early-stage preparations cost value that early-stage preparations cost change rate changes over time
(3) basic preliminary expenses (early-stage preparations stage)=(construction land takes+construction project technical service fee+invisible money
Production+equipment and Work tool purchase commodity+project's earlier stage implementation management expense) * rate Units: Wan Yuan
(4) construction land take=construction place expropriation of land and cleaning expense+cultivated land use tax Units: Wan Yuan
(5) construction project technical service fee=survey and design expense+design document evaluation takes+work in preliminary project stage expense Units:
Wan Yuan
(6) equipment and Work tool purchase commodity=installation cost+equipment freight and miscellaneous charges Units: Wan Yuan
(7) equipment freight and miscellaneous charges=installation cost * equipment freight and miscellaneous charges rate Units: Wan Yuan
(8) intangible asset=country's patented technology usage charges+foreign design and technology information expense, patent and technology usage charges
Secrecy is taken
Units: Wan Yuan
(9) construction cost change rate=IF THEN ELSE (Time<2:AND:Time>6,0, other fees+dynamic
Expense+basic preliminary expenses+Over-size transport measure expense+Construction And Install Ation Cost) Units: Wan Yuan/year
(10) price differential reserve fund=INTEG (price differential reserve fund change rate, 0) Units: Wan Yuan
Note: price differential reserve fund initial value is 0, the value for the price differential reserve fund that price differential reserve fund change rate changes over time
(11) other fees=subsystem debugging and a whole set of starting starting test run expense+basic preliminary expenses+Over-size transport are arranged
Apply expense+construction project technical service fee+Operational preparation expense+project construction management expense Units: Wan Yuan
(12) Construction And Install Ation Cost=installing engineering expense+architectural engineering expense Units: Wan Yuan
(13) installing engineering expense=other equipment installation fee+transformer equipment installation fee+transmission facility installation+communication and control
Equipment installation cost Units: Wan Yuan
(14) architectural engineering expense=traffic engineering takes+foundation engineering expense+construction ancillary works expense+building construction expense
Units: Wan Yuan
(15) basic preliminary expenses (construction stage)=(fixed assets+Construction And Install Ation Cost+intangible asset) *
Rate
(16) interest incurred during construction=construction investment loan value * EXP (construction period * LN (1+ interest rate))-construction investment loan value
Units: Wan Yuan
Note: interest incurred during construction=(construction investment loan value * (1+ interest rate) n)-construction investment loan value Units: Wan Yuan
N --- construction period, year；
(17) construction investment loan value=project construction investment-one's own reserves Units: Wan Yuan
(18) activity charge=price differential reserve fund+interest incurred during construction Units: Wan Yuan
(19) construction expense=INTEG (construction cost change rate, 0) Units: Wan Yuan
(20) price differential reserve fund change rate=IF THEN ELSE (Time<2:OR:Time>6,0, ((in 1+ year cost
Rise index) ^ (construction year+construction budget compilation level to engineering year interval -1)) * project construction investment) Units: ten thousand
Member/year
Note:
E --- annual cost rise index
N1 --- construction budget compilation forcasted years to engineering year interval, year；
N2 --- engineering construction period, year；
(21) project implementation phase other fees=basic preliminary expenses+Over-size transport measure expense+construction project technology clothes
Business expense+Operational preparation takes+project construction management expense Units: Wan Yuan
(22) project construction management takes=engineering insurance expense+project supervision expense+administration fee+Manufacturing Supervision expense
(23) operation and maintenance cost change rate=IF THEN ELSE (Ti me < construction period terminates the time, 0, PULSE
(first rebuilding time, general overhaul continue duration, adjacent general overhaul interval time twice, last time general overhaul year to TRAIN
Part) * (overhaul expense/general overhaul number)+other fees+labour cost+maintenance cost+finance charge) ten thousand yuan/year of Units=
Note: if time < construction period terminates the time, 0 value is exported；
If time > construction period terminates the time, calculated value is exported: continuing duration * (overhaul expense/general overhaul time in multiple-pulse
Number)+other fees+labour cost+maintenance cost+finance charge)
(24) operation and maintenance expense=INTEG (cost of use growth rate, 0) Units: Wan Yuan
Note: operation and maintenance expense initial value is 0, the value for the operation and maintenance expense that operation and maintenance expense change rate changes over time
(25) other fees=subsystem debugging and a whole set of starting starting test run expense+construction project technical service fee Units:
Wan Yuan
(26) overhaul expense=fixed assets * general overhaul rate Units: Wan Yuan
(27) maintenance cost=fixed assets * ordinary maintenance rate Units: Wan Yuan
(28) finance charge=IF THEN ELSE (Time < construction period terminates the time, 0, loan of operating fund volume * interest rate+
(operation phase long-term loan volume * EXP (plan repayment period * LN (1+ interest rate))-operation phase long-term loan volume)/service life)
Units: Wan Yuan
Note: if time < construction period terminates the time, 0 value is exported；
If time > construction period terminates the time, calculated value is exported: [operation phase long-term loan volume * (1+ interest rate) n)-operation
Phase long-term loan volume)]/service life
(29) loan of operating fund volume=circulating fund * loan of operating fund ratio Units: Wan Yuan
(30) phase long-term loan volume=interest incurred during construction+construction investment loan value Units: Wan Yuan is runed
(31) construction investment loan value=project construction investment-one's own reserves Units: Wan Yuan
(32) interest incurred during construction=construction investment loan value * EXP (construction period * LN (1+ interest rate))-construction investment loan value
Units: Wan Yuan/year
Note: interest incurred during construction=(construction investment loan value * (1+ interest rate) n)-construction investment loan value Units: Wan Yuan
N --- construction period, year；
(33) ten thousand yuan of the artificial quantity Units:{ of labour cost=per capita salary */(people) }
(34) rate of wage increase=per capita salary's * yearly wage growth rate Units: Wan Yuan/(people)
(35) per capita salary=INTEG (rate of wage increase, initial value) Units: Wan Yuan/(people)
Note: per capita salary's initial value is 0, the value for the per capita salary that per capita salary's growth rate changes over time
(36) fixed assets=architectural engineering expense+installing engineering expense+equipment and Work tool purchase commodity+subsystem debugging and whole
Set starting starting test run expense+construction project technical service fee+basic preliminary expenses+Over-size transport measure expense+construction project technology
Service charge+Operational preparation takes+project construction management expense
(37) waste disposal cost change rate=IF THEN ELSE (Time≤26,0, other fees such as waste treatment
+ removal cost+residual value) Units: Wan Yuan
(38) waste disposal expense=INTEG (waste disposal cost change rate, initial value) Units: Wan Yuan/year
Note: waste disposal expense initial value is 0, the waste disposal expense that waste disposal cost change rate changes over time
Value
(39) residual value=original value of fixed assets * salvage value rate Units: Wan Yuan
(40) overall life cycle cost change rate=early-stage preparations cost change rate+construction cost change rate+operation
Maintenance cost change rate+waste disposal Units: Wan Yuan/year of cost change rate
(41) overall life cycle cost=INTEG (overall life cycle cost growth rate, initial value) Units: Wan Yuan
Note: overall life cycle cost initial value is 0, week life-cycle that overall life cycle cost growth rate changes over time
The value of period cost
Early-stage preparations expense
Electricity power engineering early-stage preparations expense basic settings:
(01) Initial Time=0 decagram Commissioning
Note: the initial time of early-stage preparations expense is 0, unit are as follows: the moon
(02) Final Time=12 month decagram Commissioning
Note: the time of the termination of early-stage preparations expense is December, unit are as follows: the moon
(03) TimeStep=1
Note: step-length is set as 1, unit are as follows: the moon
(04)UnitsforTime=month
Note: the unit of early-stage preparations expense are as follows: the moon
Electricity power engineering early-stage preparations expense primary structure formula is as follows:
(1) early-stage preparations cost change rate=early-stage preparations expense+feasibility study cost+basic preliminary expenses+construction
Land used takes+construction project technical service fee+Operational preparation expense+equipment and Work tool purchase commodity+project's earlier stage implementation management expense
Units: the member/moon
(2) early-stage preparations expense=INTEG (early-stage preparations cost change rate, 0) Units: member
Note: early-stage preparations expense initial value is 0, the early-stage preparations cost value that early-stage preparations cost change rate changes over time
Units: member
(3) basic preliminary expenses (early-stage preparations stage)=(construction land takes+construction project technical service fee+invisible money
Production+equipment and Work tool purchase commodity+project's earlier stage implementation management expense) * rate Units: member
(4) construction land take=construction place expropriation of land and cleaning expense+cultivated land use tax Units: member
(5) construction project technical service fee=survey and design expense+design document evaluation takes+work in preliminary project stage expense Units:
Member
(6) equipment and Work tool purchase commodity=installation cost+equipment freight and miscellaneous charges Units: member
(7) equipment freight and miscellaneous charges=installation cost * equipment freight and miscellaneous charges rate Units: member
(8) intangible asset=country's patented technology usage charges+foreign design and technology information expense, patent and technology usage charges
Secrecy takes Units: member
Construction expense
Electricity power engineering construction expense basic settings:
(01) Initial Time=0 decagram Commissioning
Note: the initial time of construction expense is 0, unit are as follows: year
(02) Final Time=5 decagram Commissioning
Note: the termination time of construction expense is 5 years, unit are as follows: year
(03) TimeStep=0.125
Note: step-length is set as 0.125, unit are as follows: year
(04)UnitsforTime=year
Note: the unit of construction expense are as follows: year
(1) construction cost change rate=project implementation phase other fees+Over-size transport measure expense+construction and installation work
Journey expense+construction expense+basic preliminary expenses+Units: Wan Yuan/year of activity charge
(2) price differential reserve fund=INTEG (price differential reserve fund change rate, 0) Units: Wan Yuan
Note: price differential reserve fund initial value is 0, the value for the price differential reserve fund that price differential reserve fund change rate changes over time
(3) other fees=subsystem debugging and a whole set of starting starting test run expense+basic preliminary expenses+Over-size transport measure
Take+construction project technical service fee+Operational preparation expense+project construction management expense Units: Wan Yuan
(5) Construction And Install Ation Cost=installing engineering expense+architectural engineering expense Units: Wan Yuan
(6) installing engineering expense=other equipment installation fee+transformer equipment installation fee+transmission facility installation+communication and control
Equipment installation cost Units: Wan Yuan
(7) architectural engineering expense=traffic engineering takes+foundation engineering expense+construction ancillary works expense+building construction expense
Units: Wan Yuan
(8) basic preliminary expenses (construction stage)=(fixed assets+Construction And Install Ation Cost+intangible asset) *
Rate
(9) interest incurred during construction=construction investment loan value * EXP (construction period * LN (1+ interest rate))-construction investment loan value
Units: Wan Yuan
Note: interest incurred during construction=(construction investment loan value * (1+ interest rate) n)-construction investment loan value Units: Wan Yuan
N --- construction period, year；
(10) construction investment loan value=project construction investment-one's own reserves Units: Wan Yuan
(11) activity charge=price differential reserve fund+interest incurred during construction Units: Wan Yuan
(12) construction expense=INTEG (construction cost change rate, 0) Units: Wan Yuan
(13) price differential reserve fund=((1+ year cost rise index) ^ (construction year+construction budget compilation level to engineering
Year interval -1)) * project construction invests for Units: Wan Yuan/year
Note:
E --- annual cost rise index
N1 --- construction budget compilation forcasted years to engineering year interval, year；
N2 --- engineering construction period, year；
(15) project implementation phase other fees=basic preliminary expenses+Over-size transport measure expense+construction project technology clothes
Business expense+Operational preparation takes+project construction management expense Units: Wan Yuan
(16) project construction management takes=engineering insurance expense+project supervision expense+administration fee+Manufacturing Supervision expense
Operation maintenance expense
(1) operation and maintenance cost change rate=IF THEN ELSE (Ti me < construction period terminates the time, 0, PULSE
(first rebuilding time, general overhaul continue duration, adjacent general overhaul interval time twice, last time general overhaul year to TRAIN
Part) * (overhaul expense/general overhaul number)+other fees+labour cost+maintenance cost+finance charge) ten thousand yuan/year of Units=
Note: if time < construction period terminates the time, 0 value is exported；
If time > construction period terminates the time, calculated value is exported: continuing duration * (overhaul expense/general overhaul time in multiple-pulse
Number)+other fees+labour cost+maintenance cost+finance charge)
(2) operation and maintenance expense=INTEG (cost of use growth rate, 0) Units: Wan Yuan
Note: operation and maintenance expense initial value is 0, the value for the operation and maintenance expense that operation and maintenance expense change rate changes over time
(3) other fees=subsystem debugging and a whole set of starting starting test run expense+construction project technical service fee Units:
Wan Yuan
(4) overhaul expense=fixed assets * general overhaul rate Units: Wan Yuan
(5) maintenance cost=fixed assets * ordinary maintenance rate Units: Wan Yuan
(6) finance charge=IF THEN ELSE (Time < construction period terminates the time, 0, loan of operating fund volume * interest rate+(fortune
Battalion phase long-term loan volume * EXP (plan repayment period * LN (1+ interest rate))-operation phase long-term loan volume)/service life) Units:
Wan Yuan
Note: if time < construction period terminates the time, 0 value is exported；
If time > construction period terminates the time, calculated value is exported: [operation phase long-term loan volume * (1+ interest rate) n)-operation
Phase long-term loan volume)]/service life
(7) loan of operating fund volume=circulating fund * loan of operating fund ratio Units: Wan Yuan
(8) phase long-term loan volume=interest incurred during construction+construction investment loan value Units: Wan Yuan is runed
(9) construction investment loan value=project construction investment-one's own reserves Units: Wan Yuan
(10) interest incurred during construction=construction investment loan value * EXP (construction period * LN (1+ interest rate))-construction investment loan value
Units: Wan Yuan/year
Note: interest incurred during construction=(construction investment loan value * (1+ interest rate) n)-construction investment loan value Units: Wan Yuan
N --- construction period, year；
(11) ten thousand yuan of the artificial quantity Units:{ of labour cost=per capita salary */(people) }
(12) rate of wage increase=per capita salary's * yearly wage growth rate Units: Wan Yuan/(people)
(13) per capita salary=INTEG (rate of wage increase, initial value) Units: Wan Yuan/(people)
Note: per capita salary's initial value is 0, the value for the per capita salary that per capita salary's growth rate changes over time
(14) fixed assets=architectural engineering expense+installing engineering expense+equipment and Work tool purchase commodity+subsystem debugging and whole
Set starting starting test run expense+construction project technical service fee+basic preliminary expenses+Over-size transport measure expense+construction project technology
Service charge+Operational preparation takes+project construction management expense
Waste disposal stage expense
Electricity power engineering waste disposal stage expense basic settings:
(01) Initial Time=0 decagram Commissioning
Note: the initial time in construction waste disposal stage is 0, unit are as follows: year
(02) Final Time=1 decagram Commissioning
Note: the termination time in construction waste disposal stage is 1 year, unit are as follows: year
(03) TimeStep=0.125
Note: step-length is set as 0.125, unit are as follows: year
(04)UnitsforTime=year
Note: the unit of waste disposal stage expense are as follows: year
(1) other fees such as waste disposal cost change rate=waste treatment+removal cost+residual value Units: Wan Yuan
(2) waste disposal expense=INTEG (waste disposal cost change rate, initial value) Units: Wan Yuan/year
Note: waste disposal expense initial value is 0, the waste disposal expense that waste disposal cost change rate changes over time
Value
(3) residual value=original value of fixed assets * salvage value rate Units: Wan Yuan.
Claims (5)
1. a kind of power engineering life cycle cost research method based on system dynamics, it is characterised in that: the following steps are included:
S1, early-stage preparations expense is calculated；Early-stage preparations expense includes feasibility study cost, basic reserve fund early period；
S2, construction cost is calculated；Construction cost includes Construction And Install Ation Cost, basic preliminary expenses, construction period
Interest, activity charge, price differential reserve fund, project construction management take；
S3, operation maintenance expense is calculated；Operation maintenance expense includes overhaul expense, maintenance cost, finance charge, labour cost；
S4, waste disposal expense is calculated；Waste disposal expense includes residual value, removal cost and waste treatment other fees；
S5, it is calculated by early-stage preparations expense, construction cost, operation maintenance expense, waste disposal expense, obtains electricity
Power engineering life cycle cost.
2. the power engineering life cycle cost research method based on system dynamics as described in claim 1, it is characterised in that:
The step S1 mid-early stage basic preliminary expenses=(construction land takes+construction project technical service fee+intangible asset+equipment and
Work tool purchase commodity+project's earlier stage implementation management expense) * rate；Construction land expense=construction place expropriation of land and cleaning expense+arable land account for
Use tax；Construction project technical service fee=survey and design expense+design document evaluation takes+work in preliminary project stage expense；Equipment and work device
Has purchase commodity=installation cost+equipment freight and miscellaneous charges；Equipment freight and miscellaneous charges=installation cost * equipment freight and miscellaneous charges rate；Intangible asset=the country
Patented technology usage charges+foreign design and technology information expense.
3. the power engineering life cycle cost research method based on system dynamics as claimed in claim 2, it is characterised in that:
Construction And Install Ation Cost=installing engineering expense+architectural engineering expense in the step S2；Installing engineering expense=other equipment installation
Take+transformer equipment installation fee+transmission facility installation+communication and control equipment installation cost；Architectural engineering expense=traffic engineering takes+base
Plinth engineering cost+construction ancillary works takes+building construction expense；It constructs basic preliminary expenses=(fixed assets+building installation engineering
Expense+intangible asset) * rate；Interest incurred during construction=construction investment loan value * EXP (construction period * LN (1+ interest rate))-construction is thrown
Provide loan value；Construction investment loan value=project construction investment-one's own reserves；Activity charge=price differential reserve fund+construction period benefit
Breath；Price differentialWherein, e is annual cost rise index；n1To build budget compilation water
Non-leap year is to engineering year interval；n2For the engineering construction period.
4. the power engineering life cycle cost research method based on system dynamics as claimed in claim 3, it is characterised in that:
Overhaul expense=fixed assets * general overhaul rate in the step S3；Maintenance cost=fixed assets * ordinary maintenance rate；Finance charge
=loan of operating fund volume * interest rate+and [operation phase long-term loan volume * (1+ interest rate) n)-operation phase long-term loan volume)]/use year
Limit；Loan of operating fund volume=circulating fund * loan of operating fund ratio；Operation phase long-term loan volume=interest incurred during construction+is built
If investment loan volume；Labour cost=artificial the quantity of per capita salary *.
5. the power engineering life cycle cost research method based on system dynamics as claimed in claim 4, it is characterised in that:
Residual value=original value of fixed assets * salvage value rate in the step S4.
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| CN111260334A (en) * | 2020-02-11 | 2020-06-09 | 长江师范学院 | Engineering project management system based on system dynamics |
| CN111882165A (en) * | 2020-07-01 | 2020-11-03 | 国网河北省电力有限公司经济技术研究院 | Device and method for splitting comprehensive project cost analysis data |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111260334A (en) * | 2020-02-11 | 2020-06-09 | 长江师范学院 | Engineering project management system based on system dynamics |
| CN111882165A (en) * | 2020-07-01 | 2020-11-03 | 国网河北省电力有限公司经济技术研究院 | Device and method for splitting comprehensive project cost analysis data |
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