CN106779319A - The appraisal procedure of large size city synthesis power supply plan - Google Patents
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Abstract
The invention discloses the appraisal procedure of large size city synthesis power supply plan, including：Obtain the safety coefficient of the supply line of large size city synthesis power supply plan；Obtain the effectiveness parameters of large size city synthesis power supply plan；Obtain the cost parameter of large size city synthesis power supply plan；The assessment result of large size city synthesis power supply plan is generated according to below equation：Assessment result=safety coefficient × effectiveness parameters ÷ cost parameters.The embodiment of the present invention is by setting the safety coefficient of large size city synthesis power supply plan, and the safety coefficient is generated by power supply coefficient, loop coefficient and the checkout coefficients of N 1, such that it is able to be participated in the security of large size city synthesis power supply plan as an important influence factor in the calculating of final assessment result；So that final selected large size city synthesis power supply plan is more reliable and safe.
Description
Technical field
The present invention relates to power domain, the more particularly to appraisal procedure of large size city synthesis power supply plan.
Background technology
The features such as large size city synthesis electric power system has that electricity consumption installed capacity is big, meets fast-growth.
Large size city synthesis electric power system is before foundation, it is necessary first to by respectively to different large size city synthesis
Power supply plan is estimated, and then on the premise of meeting for electron-donating safety and reliability, than selecting efficiency and cost
Meet the scheme of demand, so that for the structure of large size city synthesis electric power system provides reference.
In the prior art, when carrying out large size city synthesis power supply plan than selecting, different large size cities are primarily upon
Cost or benefit factor that synthesis power supply plan is related to, carry out Quantitative yield, eventually through comparative costs or effect by model
The size of benefit determines the quality of large size city synthesis power supply plan.
Inventor's discovery, the large size city synthesis power supply plan for selecting mode to be chosen by ratio of the prior art, extremely
There is following defect less：
The large size city synthesis power supply plan filtered out by way of prior art, it is possible to which meeting cannot because of its security
It is effectively guaranteed, so as to optimal large size city synthesis power supply plan cannot be obtained.
The content of the invention
The technical problems to be solved by the invention are how to obtain optimal large size city synthesis power supply plan, specifically
's：
The embodiment of the invention provides a kind of appraisal procedure of large size city synthesis power supply plan, including step：
S11, the safety coefficient of the supply line of the acquisition large size city synthesis power supply plan；The safety coefficient is power supply
The product of coefficient, loop coefficient and N-1 checkout coefficients；The coefficient value of the power supply coefficient is supplied according to the large size city synthesis
The electric power generating composition mode of electric scheme determines；The coefficient value of the loop coefficient according to judge loop whether be single loop determine；Institute
State the result determination that the coefficient value of N-1 checkout coefficients is verified according to N-1；
S12, the effectiveness parameters for obtaining the large size city synthesis power supply plan；
S13, the cost parameter for obtaining the large size city synthesis power supply plan；
S14, the assessment result that the large size city synthesis power supply plan is generated according to below equation：
Assessment result=safety coefficient × effectiveness parameters ÷ cost parameters.
Preferably, in embodiments of the present invention, the effectiveness parameters for obtaining the large size city synthesis power supply plan,
Including：
S21, the correction coefficient for obtaining the supply line；Rack of the coefficient value of the correction coefficient according to the supply line
The constituted mode of structure determines；
S22, calculated according to the conveying load and limit transmission capacity of the associated circuitry of the large size city synthesis power supply plan
The utilization ratio of the supply line；
The increased electricity sales amount of large size city synthesis power supply plan institute described in S23, budget；According to the electricity sales amount and unit sale of electricity
Amount income, calculating cycle income；
S24, the effectiveness parameters are generated according to below equation：
Effectiveness parameters=compensation coefficient × utilization ratio × cycle income.
Preferably, in embodiments of the present invention, the cost parameter for obtaining the large size city synthesis power supply plan,
Including：
S31, the circuit being related to according to the large size city synthesis power supply plan, switching station, ring main unit, the scale of on-pole switch
And cost, calculate the initial outlay of the large size city synthesis power supply plan；
S32, according to the deployment region of large size city synthesis power supply plan medium voltage network maintenance cost accounting feelings in recent years
Condition, calculates the maintenance cost of the large size city synthesis power supply plan；
S33, the network loss load according to the large size city synthesis power supply plan, number of working hours based on maximum load and zone leveling
Power purchase valency, calculates the operating cost of the large size city synthesis power supply plan；
S34, the salvage value rate according to the large size city synthesis power supply plan and region dead assets administration fee accounting, calculate
The retired cost of the large size city synthesis power supply plan；
S35, the cost parameter is generated according to below equation：
Cost parameter=initial outlay+maintenance cost+operating cost+retired cost.
Preferably, in embodiments of the present invention, the coefficient value of the power supply coefficient is supplied according to the large size city synthesis
The electric power generating composition mode of electric scheme determines, including：
If same bus of the power supply from same transformer station, it is determined that the coefficient value of power supply coefficient is 0；If the confession
Different buses of the power supply from same transformer station, it is determined that the coefficient value of power supply coefficient is 1；If the power supply is not from
Same transformer station, it is determined that the coefficient value of power supply coefficient is 2；
The coefficient value of the loop coefficient according to judge loop whether be single loop determine, including：
If the supply line is 1 time, it is determined that the coefficient value of the loop coefficient is 0；If the supply line be 2 times and with
On, it is determined that the coefficient value of the loop coefficient is 1；
The result determination that the coefficient value of the N-1 checkout coefficients is verified according to N-1, including：
If supply line is unsatisfactory for N-1 verifications, it is determined that the coefficient value of the N-1 checkout coefficients is 0；If supply line meets
N-1 is verified, it is determined that the coefficient value of the N-1 checkout coefficients is 1.
Preferably, in embodiments of the present invention, rack knot of the coefficient value of the correction coefficient according to the supply line
The constituted mode determination of structure, including：
If the grid structure of the supply line supplies grid structure for Single-ring network, simply connected network, dual-ring network or straight parallel, it is determined that institute
The coefficient value for stating compensation coefficient is 2；If the grid structure of the supply line is two contact grid structures, it is determined that the correction
The coefficient value of coefficient is 1.5；If the grid structure of the supply line is radiant type grid structure, it is determined that the compensation coefficient
Coefficient value be 1.25；
The conveying load total amount and limit transmission capacity of the associated circuitry according to the large size city synthesis power supply plan
The utilization ratio of the supply line is calculated, including：
Utilization ratio=saturation conveying load total amount ÷ limit transmission capacities；
The increased electricity sales amount of large size city synthesis power supply plan institute described in the budget；According to the electricity sales amount and unit sale of electricity
Amount income, calculating cycle income, including：
Cycle income=Σ（The increased electricity sales amount of the large size city synthesis power supply plan institute × unit electricity sales amount income ×
Secondary payment present value factor）× recovery of the capital coefficient.
Preferably, in embodiments of the present invention, the cost parameter for obtaining the large size city synthesis power supply plan,
Including：
The rule of circuit, switching station, ring main unit, the on-pole switch being related to according to the large size city synthesis power supply plan etc.
Mould and cost, calculate the initial outlay of the large size city synthesis power supply plan, including：
Initial outlay=（Line length × circuit comprehensive cost+switching station number × switching station's comprehensive cost+ring main unit seat number ×
Ring main unit comprehensive cost+on-pole switch number of units × on-pole switch comprehensive cost）× recovery of the capital coefficient；
The deployment region according to large size city synthesis power supply plan medium voltage network maintenance cost accounting feelings in recent years
Condition, calculates the maintenance cost of the large size city synthesis power supply plan, including：
Maintenance cost=initial outlay × maintenance cost proportionality coefficient × recovery of the capital coefficient；
The network loss load according to the large size city synthesis power supply plan, number of working hours based on maximum load and zone leveling
Power purchase valency, calculates the operating cost of the large size city synthesis power supply plan, including：
Operating cost=Σ（Large size city synthesis power supply plan network loss load × number of working hours based on maximum load × zone leveling
Power purchase valency × once pay present value factor）× recovery of the capital coefficient；
The salvage value rate and region dead assets administration fee accounting according to the large size city synthesis power supply plan, calculates
The retired cost of the large size city synthesis power supply plan, including：
Retired cost=initial outlay ×（Dead assets administration fee accounting-salvage value rate）× once pay present value factor × fund
Recovery coefficient.
In the embodiment of the present invention, by setting the safety coefficient of large size city synthesis power supply plan, and by power supply system
Number, loop coefficient and N-1 checkout coefficients generate the safety coefficient, such that it is able to by the peace of large size city synthesis power supply plan
Full property is participated in the calculating of final assessment result as an important influence factor.So that finally selectes is large-scale
City complex power supply plan is more reliable and safe.
Additionally, the embodiment of the present invention is with the whole life cycle of large size city synthesis power supply plan as time limit, from power supply
Safety, efficiency, three dimensions of cost build assessment indicator system, and propose the large size city synthesis power supply plan based on SEC
Evaluation model, the economy and security of comprehensive analysis each large size city synthesis power supply plan；By the embodiment of the present invention
In large size city synthesis power supply plan evaluation method constructed by evaluation model, large size city synthesis can be effectively reduced
Power supply plan realizes work of the large size city synthesis power supply plan than choosing than selecting the requirement to basic data and Personnel Skill Levels
Cheng Hua, such that it is able to effectively reduce cost of the large size city synthesis power supply plan than choosing.
Brief description of the drawings
In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
The step of Fig. 1 is the appraisal procedure of synthesis power supply plan in large size city described herein schematic diagram；
Fig. 2 is the another step schematic diagram of the appraisal procedure of synthesis power supply plan in large size city described herein；
Fig. 3 is the another step schematic diagram of the appraisal procedure of synthesis power supply plan in large size city described herein.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only this
A part of embodiment is invented, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art exist
The every other embodiment obtained under the premise of creative work is not made, the scope of protection of the invention is belonged to.
In order to obtain optimal large size city synthesis power supply plan, in embodiments of the present invention, there is provided a kind of
The appraisal procedure of large size city synthesis power supply plan is as shown in figure 1, including step：
S11, the safety coefficient of the supply line of acquisition large size city synthesis power supply plan；The safety coefficient is power supply system
The product of number, loop coefficient and N-1 checkout coefficients；The coefficient value of the power supply coefficient is powered according to the large size city synthesis
The electric power generating composition mode of scheme determines；The coefficient value of the loop coefficient according to judge loop whether be single loop determine；It is described
The result that the coefficient value of N-1 checkout coefficients is verified according to N-1 determines；
The security of large size city synthesis electric power system is increasingly taken seriously, but by scheme analysis of the prior art
Selected large size city synthesis power supply plan, be due to being unable to being powered by acquisition influence large size city synthesis for system
The many factors of the security of system are come the safe coefficient of the large size city synthesis power supply plan that quantizes, so it is difficult to obtaining most
Excellent large size city synthesis power supply plan.
In embodiments of the present invention, by the electric power generating composition mode of large size city synthesis power supply plan, large size city synthesis
Whether the loop of body power supply plan is single loop, and, it is large-scale that the N-1 of large size city synthesis power supply plan verifies these influences
The principal element of the security of City complex power supply plan, and corresponding weight is set, so as to quantify large size city synthesis
The safe coefficient of power supply plan, specifically includes：
The coefficient value of power supply coefficient determines according to the electric power generating composition mode of large size city synthesis power supply plan；Can be specifically,
If same bus of the power supply from same transformer station, it is determined that the coefficient value of power supply coefficient is 0；If power supply is from same
The different buses of one transformer station, it is determined that the coefficient value of power supply coefficient is 1；If power supply comes from different substation, it is determined that
The coefficient value of power supply coefficient is 2；
The coefficient value of loop coefficient according to judge loop whether be single loop determine；Can be specifically, if supply line is 1 time,
The coefficient value for then determining loop coefficient is 0；If supply line be 2 times and more than, it is determined that the coefficient value of loop coefficient be 1；
The result that the coefficient value of N-1 checkout coefficients is verified according to N-1 determines；Can be specifically, if supply line is unsatisfactory for N-1 schools
Test, it is determined that the coefficient value of N-1 checkout coefficients is 0；If supply line meets N-1 verifications, it is determined that the coefficient of N-1 checkout coefficients
Be worth is 1.
Power supply coefficient, loop coefficient and N-1 checkout coefficients is specific in large size city synthesis power supply plan is obtained
Afterwards, it is possible to calculate the safety coefficient of large size city synthesis power supply plan, can be specifically that safety coefficient is power supply system
The product of number, loop coefficient and N-1 checkout coefficients.
S12, the effectiveness parameters for obtaining large size city synthesis power supply plan；
In embodiments of the present invention, in addition it is also necessary to obtain the effectiveness parameters of large size city synthesis power supply plan to characterize and quantify
Large size city synthesis power supply plan degree of performance；The specific steps of the embodiment of the present invention can be：
S21, the correction coefficient for obtaining supply line；Composition side of the coefficient value of correction coefficient according to the grid structure of supply line
Formula determines；
In actual applications, the specific determination mode of the coefficient value of correction coefficient can be, if the grid structure of supply line is
Single-ring network, simply connected network, dual-ring network or straight parallel supply grid structure, it is determined that the coefficient value of compensation coefficient is 2；If supply line
Grid structure is two contact grid structures, it is determined that the coefficient value of compensation coefficient is 1.5；If the grid structure of supply line is spoke
Penetrate formula grid structure, it is determined that the coefficient value of compensation coefficient is 1.25；
S22, according to the conveying load and limit transmission capacity of the associated circuitry of large size city synthesis power supply plan are calculated
The utilization ratio of supply line；
In actual applications, the specific determination algorithm of utilization ratio can be that utilization ratio=saturation conveys the load total amount ÷ limit
Transmission capacity；
S23, the increased electricity sales amount of budget large size city synthesis power supply plan institute；Taken according to electricity sales amount and unit electricity sales amount,
Calculating cycle income；
In actual applications, the specific determination algorithm of cycle income can be, cycle income=Σ（Large size city synthesis is powered
The increased electricity sales amount of scheme institute × unit electricity sales amount income × once pay present value factor）× recovery of the capital coefficient
S24, according to below equation generate effectiveness parameters：
Effectiveness parameters=compensation coefficient × utilization ratio × cycle income.
Obtaining the effect of these influence large size city synthesis power supply plans of compensation coefficient, utilization ratio and cycle income
After the key factor of energy, the overall quantization of the efficiency of large size city synthesis power supply plan can be obtained by way of product
Value.
S13, the cost parameter for obtaining the large size city synthesis power supply plan；
In embodiments of the present invention, in addition it is also necessary to obtain the cost parameter of large size city synthesis power supply plan to characterize and quantify
Large size city synthesis power supply plan cost degree；The specific steps of the embodiment of the present invention can be：
The scale of S31, circuit, switching station, ring main unit, the on-pole switch being related to according to large size city synthesis power supply plan etc. and
Cost, calculates the initial outlay of large size city synthesis power supply plan；
In actual applications, the specific determination algorithm of initial outlay can be, initial outlay=（Line length × circuit is comprehensively made
Opened on valency+switching station number × switching station's comprehensive cost+ring main unit seat number × ring main unit comprehensive cost+on-pole switch number of units × post
Close comprehensive cost）× recovery of the capital coefficient.
S32, according to the deployment region of large size city synthesis power supply plan medium voltage network maintenance cost accounting feelings in recent years
Condition, calculates the maintenance cost of large size city synthesis power supply plan；
In actual applications, the specific determination algorithm of maintenance cost can be, maintenance cost=initial outlay × maintenance cost ratio
Coefficient × recovery of the capital coefficient.
S33, the network loss load according to large size city synthesis power supply plan, number of working hours based on maximum load and zone leveling
Power purchase valency, calculates the operating cost of large size city synthesis power supply plan；
In actual applications, the specific determination algorithm of operating cost can be, operating cost=Σ（Large size city synthesis is powered
Scheme network loss load × number of working hours based on maximum load × zone leveling power purchase valency × once pay present value factor）× recovery of the capital
Coefficient.
S34, the salvage value rate according to large size city synthesis power supply plan and region dead assets administration fee accounting, calculate
The retired cost of large size city synthesis power supply plan；
In actual applications, the specific determination algorithm of retired cost can be, retired cost=initial outlay ×（Dead assets pipe
Reason expense accounting-salvage value rate）× once pay present value factor × recovery of the capital coefficient.
S35, according to below equation manufacturing cost parameter：
Cost parameter=initial outlay+maintenance cost+operating cost+retired cost.
Initial outlay, maintenance cost, operating cost and retired cost is obtained, these influence large size city synthesises to supply
After the key factor of the cost of electric scheme, the cost of large size city synthesis power supply plan can be obtained by way of summation
Overall quantized value.
S14, the assessment result that large size city synthesis power supply plan is generated according to below equation：
Assessment result=safety coefficient × effectiveness parameters ÷ cost parameters.
Determine safety coefficient, effectiveness parameters and cost parameter these influence large size city synthesis power supply plans into
After this key factor, the overall quantized value of the cost of large size city synthesis power supply plan can be obtained by above-mentioned formula.
It should be noted that in embodiments of the present invention on power supply coefficient, loop coefficient, N-1 checkout coefficients, correction system
The numerical example of the specific value of coefficient value in number, only large size city synthesis power supply plan in the embodiment of this invention
The selection of preferable representative value during appraisal procedure, is not intended to limit the present invention and takes other coefficient values and realize this hair
Bright goal of the invention.
In the embodiment of the present invention, by setting the safety coefficient of large size city synthesis power supply plan, and by power supply system
Number, loop coefficient and N-1 checkout coefficients generate the safety coefficient, such that it is able to by the peace of large size city synthesis power supply plan
Full property is participated in the calculating of final assessment result as an important influence factor.So that finally selectes is large-scale
City complex power supply plan is more reliable and safe.
Additionally, the embodiment of the present invention is with the whole life cycle of large size city synthesis power supply plan as time limit, from power supply
Safety, efficiency, three dimensions of cost build assessment indicator system, and propose the large size city synthesis power supply plan based on SEC
Evaluation model, the economy and security of comprehensive analysis each large size city synthesis power supply plan；By the embodiment of the present invention
In large size city synthesis power supply plan evaluation method constructed by evaluation model, large size city synthesis can be effectively reduced
Power supply plan realizes work of the large size city synthesis power supply plan than choosing than selecting the requirement to basic data and Personnel Skill Levels
Cheng Hua, such that it is able to effectively reduce cost of the large size city synthesis power supply plan than choosing.
Specific case used herein is set forth to principle of the invention and implementation method, and above example is said
It is bright to be only intended to help and understand the method for the present invention and its core concept.It should be pointed out that for the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improvement
Also fallen into the protection domain of the claims in the present invention with modification.
Claims (6)
1. a kind of appraisal procedure of large size city synthesis power supply plan, it is characterised in that including step：
S11, the safety coefficient of the supply line of the acquisition large size city synthesis power supply plan；The safety coefficient is power supply
The product of coefficient, loop coefficient and N-1 checkout coefficients；The coefficient value of the power supply coefficient is supplied according to the large size city synthesis
The electric power generating composition mode of electric scheme determines；The coefficient value of the loop coefficient according to judge loop whether be single loop determine；Institute
State the result determination that the coefficient value of N-1 checkout coefficients is verified according to N-1；
S12, the effectiveness parameters for obtaining the large size city synthesis power supply plan；
S13, the cost parameter for obtaining the large size city synthesis power supply plan；
S14, the assessment result that the large size city synthesis power supply plan is generated according to below equation：
Assessment result=safety coefficient × effectiveness parameters ÷ cost parameters.
2. the appraisal procedure of large size city synthesis power supply plan according to claim 1, it is characterised in that the acquisition institute
The effectiveness parameters of large size city synthesis power supply plan are stated, including：
S21, the correction coefficient for obtaining the supply line；Rack of the coefficient value of the correction coefficient according to the supply line
The constituted mode of structure determines；
S22, calculated according to the conveying load and limit transmission capacity of the associated circuitry of the large size city synthesis power supply plan
The utilization ratio of the supply line；
The increased electricity sales amount of large size city synthesis power supply plan institute described in S23, budget；According to the electricity sales amount and unit sale of electricity
Amount income, calculating cycle income；
S24, the effectiveness parameters are generated according to below equation：
Effectiveness parameters=compensation coefficient × utilization ratio × cycle income.
3. the appraisal procedure of large size city synthesis power supply plan according to claim 1, it is characterised in that the acquisition institute
The cost parameter of large size city synthesis power supply plan is stated, including：
S31, the circuit being related to according to the large size city synthesis power supply plan, switching station, ring main unit, the scale of on-pole switch
And cost, calculate the initial outlay of the large size city synthesis power supply plan；
S32, according to the deployment region of large size city synthesis power supply plan medium voltage network maintenance cost accounting feelings in recent years
Condition, calculates the maintenance cost of the large size city synthesis power supply plan；
S33, the network loss load according to the large size city synthesis power supply plan, number of working hours based on maximum load and zone leveling
Power purchase valency, calculates the operating cost of the large size city synthesis power supply plan；
S34, the salvage value rate according to the large size city synthesis power supply plan and region dead assets administration fee accounting, calculate
The retired cost of the large size city synthesis power supply plan；
S35, the cost parameter is generated according to below equation：
Cost parameter=initial outlay+maintenance cost+operating cost+retired cost.
4. the appraisal procedure of large size city synthesis power supply plan according to claim 1, it is characterised in that the power supply system
Several coefficient values determines according to the electric power generating composition mode of the large size city synthesis power supply plan, including：
If same bus of the power supply from same transformer station, it is determined that the coefficient value of power supply coefficient is 0；If the confession
Different buses of the power supply from same transformer station, it is determined that the coefficient value of power supply coefficient is 1；If the power supply is not from
Same transformer station, it is determined that the coefficient value of power supply coefficient is 2；
The coefficient value of the loop coefficient according to judge loop whether be single loop determine, including：
If the supply line is 1 time, it is determined that the coefficient value of the loop coefficient is 0；If the supply line be 2 times and with
On, it is determined that the coefficient value of the loop coefficient is 1；
The result determination that the coefficient value of the N-1 checkout coefficients is verified according to N-1, including：
If supply line is unsatisfactory for N-1 verifications, it is determined that the coefficient value of the N-1 checkout coefficients is 0；If supply line meets
N-1 is verified, it is determined that the coefficient value of the N-1 checkout coefficients is 1.
5. the appraisal procedure of large size city synthesis power supply plan according to claim 2, it is characterised in that
The coefficient value of the correction coefficient according to the constituted mode of the grid structure of the supply line determine, including：
If the grid structure of the supply line supplies grid structure for Single-ring network, simply connected network, dual-ring network or straight parallel, it is determined that institute
The coefficient value for stating compensation coefficient is 2；If the grid structure of the supply line is two contact grid structures, it is determined that the correction
The coefficient value of coefficient is 1.5；If the grid structure of the supply line is radiant type grid structure, it is determined that the compensation coefficient
Coefficient value be 1.25；
The conveying load total amount and limit transmission capacity of the associated circuitry according to the large size city synthesis power supply plan
The utilization ratio of the supply line is calculated, including：
Utilization ratio=saturation conveying load total amount ÷ limit transmission capacities；
The increased electricity sales amount of large size city synthesis power supply plan institute described in the budget；According to the electricity sales amount and unit sale of electricity
Amount income, calculating cycle income, including：
Cycle income=Σ（The increased electricity sales amount of the large size city synthesis power supply plan institute × unit electricity sales amount income ×
Secondary payment present value factor）× recovery of the capital coefficient.
6. the appraisal procedure of large size city synthesis power supply plan according to claim 3, it is characterised in that the acquisition institute
The cost parameter of large size city synthesis power supply plan is stated, including：
The rule of circuit, switching station, ring main unit, the on-pole switch being related to according to the large size city synthesis power supply plan etc.
Mould and cost, calculate the initial outlay of the large size city synthesis power supply plan, including：
Initial outlay=（Line length × circuit comprehensive cost+switching station number × switching station's comprehensive cost+ring main unit seat number ×
Ring main unit comprehensive cost+on-pole switch number of units × on-pole switch comprehensive cost）× recovery of the capital coefficient；
The deployment region according to large size city synthesis power supply plan medium voltage network maintenance cost accounting feelings in recent years
Condition, calculates the maintenance cost of the large size city synthesis power supply plan, including：
Maintenance cost=initial outlay × maintenance cost proportionality coefficient × recovery of the capital coefficient；
The network loss load according to the large size city synthesis power supply plan, number of working hours based on maximum load and zone leveling
Power purchase valency, calculates the operating cost of the large size city synthesis power supply plan, including：
Operating cost=Σ（Large size city synthesis power supply plan network loss load × number of working hours based on maximum load × zone leveling
Power purchase valency × once pay present value factor）× recovery of the capital coefficient；
The salvage value rate and region dead assets administration fee accounting according to the large size city synthesis power supply plan, calculates
The retired cost of the large size city synthesis power supply plan, including：
Retired cost=initial outlay ×（Dead assets administration fee accounting-salvage value rate）× once pay present value factor × fund
Recovery coefficient.
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| CN105096207A (en) * | 2014-05-06 | 2015-11-25 | 国家电网公司 | Important power user power supply reliability estimation method based on analytic hierarchy process |
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| US20070050302A1 (en) * | 2005-08-25 | 2007-03-01 | Cheim Luiz Americo V | Method for calculating the economic profitability of power transformers and method for the optimization of the economic profitability of power transformers |
| CN101859409A (en) * | 2010-05-25 | 2010-10-13 | 广西电网公司电力科学研究院 | Power transmission and transformation equipment state overhauling system based on risk evaluation |
| CN102368314A (en) * | 2011-10-24 | 2012-03-07 | 浙江省电力公司 | LCC theory-based method of comprehensive evaluation of transmission network planning scheme |
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