CN110782279A - Asset cost accounting method and system for main equipment of power distribution network - Google Patents

Asset cost accounting method and system for main equipment of power distribution network Download PDF

Info

Publication number
CN110782279A
CN110782279A CN201910982648.6A CN201910982648A CN110782279A CN 110782279 A CN110782279 A CN 110782279A CN 201910982648 A CN201910982648 A CN 201910982648A CN 110782279 A CN110782279 A CN 110782279A
Authority
CN
China
Prior art keywords
cost
distribution network
main equipment
power distribution
asset
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910982648.6A
Other languages
Chinese (zh)
Inventor
刘志伟
谷志红
齐慧文
董力通
陈英华
葛艳琴
刘卓
张�荣
温伟
谭忠富
余雪
周静涵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China Electric Power University
State Grid Economic and Technological Research Institute
Economic and Technological Research Institute of State Grid Shanxi Electric Power Co Ltd
Original Assignee
North China Electric Power University
State Grid Economic and Technological Research Institute
Economic and Technological Research Institute of State Grid Shanxi Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North China Electric Power University, State Grid Economic and Technological Research Institute, Economic and Technological Research Institute of State Grid Shanxi Electric Power Co Ltd filed Critical North China Electric Power University
Priority to CN201910982648.6A priority Critical patent/CN110782279A/en
Publication of CN110782279A publication Critical patent/CN110782279A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0201—Market modelling; Market analysis; Collecting market data
    • G06Q30/0206—Price or cost determination based on market factors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/16—Matrix or vector computation, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06313—Resource planning in a project environment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0283—Price estimation or determination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply

Landscapes

  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Human Resources & Organizations (AREA)
  • Strategic Management (AREA)
  • Physics & Mathematics (AREA)
  • Development Economics (AREA)
  • Economics (AREA)
  • General Physics & Mathematics (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Theoretical Computer Science (AREA)
  • Marketing (AREA)
  • General Business, Economics & Management (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Game Theory and Decision Science (AREA)
  • Tourism & Hospitality (AREA)
  • Mathematical Physics (AREA)
  • Educational Administration (AREA)
  • Data Mining & Analysis (AREA)
  • Computational Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Pure & Applied Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Operations Research (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Computing Systems (AREA)
  • Primary Health Care (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention relates to a method and a system for accounting asset cost of main equipment of a power distribution network, wherein the accounting method comprises the following steps: s1, determining influence factors on the asset cost accounting of the main equipment of the power distribution network based on the asset cost accounting current situation of the main equipment of the power distribution network, and screening cost accounting indexes by adopting an explanation structure model; s2, analyzing the asset cost composition mode of the main equipment of the power distribution network, and determining an asset cost collection method of the main equipment of the power distribution network; s3, establishing a power distribution network main equipment asset cost accounting model based on the whole life cycle; and S4, identifying the running state of the main equipment of the power distribution network based on the asset cost accounting model of the main equipment of the power distribution network. The method can effectively identify the running state of the main equipment assets, reduce the cost of the main equipment assets of the power distribution network, improve the running efficiency and provide an effective solution for the cost accounting of the main equipment assets of the power distribution network.

Description

Asset cost accounting method and system for main equipment of power distribution network
Technical Field
The invention relates to a method and a system for accounting asset cost of main equipment of a power distribution network, and relates to the technical field of accounting of asset cost of equipment of the power distribution network.
Background
The power distribution network assets are a part necessary for maintaining continuous and normal production and operation activities of the power grid company, and are also main basis for the government or the regulatory organization to calculate the permitted income and the transmission and distribution price of the power grid company.
In general, the power distribution network equipment assets can be roughly divided into primary equipment, secondary equipment and additional equipment, and the primary equipment occupies more than 70% of the total number of the power distribution network assets. Meanwhile, in order to meet a series of requirements of reliable power supply, high-quality service and the like, the assets of the main equipment of the power distribution network are required to be technically improved or maintained frequently, so that the frequency change of the asset configuration of the main equipment of the power distribution network is accelerated, and the utilization efficiency of the assets of the main equipment of the power distribution network is reduced.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a cost accounting system based on the assets of the main devices of the power distribution network, which is used for positioning the influencing factors of the assets of the main devices of the power distribution network and reducing the assets cost of the main devices of the power distribution network.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first aspect, the invention provides a method for accounting asset cost of main equipment of a power distribution network, which comprises the following steps:
s1, determining influence factors on the asset cost accounting of the main equipment of the power distribution network based on the asset cost accounting current situation of the main equipment of the power distribution network, and screening cost accounting indexes by adopting an explanation structure model;
s2, analyzing the asset cost composition mode of the main equipment of the power distribution network, and determining an asset cost collection method of the main equipment of the power distribution network;
s3, establishing a power distribution network main equipment asset cost accounting model based on the whole life cycle;
and S4, identifying the running state of the main equipment of the power distribution network based on the asset cost accounting model of the main equipment of the power distribution network.
In the method for accounting the asset cost of the main equipment of the power distribution network, the specific process of S1 is as follows:
s11, determining influence factors of natural conditions on asset cost accounting of main equipment of the power distribution network;
s12, determining influence factors of economic conditions on asset cost accounting of main equipment of the power distribution network;
s13, determining influence factors of technical conditions on asset cost accounting of main equipment of the power distribution network;
s14, taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial cost accounting indexes, and screening key indexes of the asset accounting of the main equipment of the power distribution network by using the explanation structure model.
In the method for accounting the asset cost of the main equipment of the power distribution network, the specific process of S14 is as follows:
s141, inputting the established initial index of the asset cost accounting of the main equipment of the power distribution network into an explanation structure model as input data to form a data matrix A of n multiplied by m orders 0Wherein n is the number of initial indexes of cost accounting, and m is the number of data sets;
s142, data matrix A 0Processing is carried out to calculate a data matrix A 0Calculating the correlation coefficient between every two initial indexes by using the medium n cost items to obtain an n multiplied by n order coefficient matrix A 1；
S143, according to a preset threshold value x, pairing the coefficient matrix A 1Processing to obtain n × n order adjacency matrix A 2；
S144, pair of adjacent matrixes A 2Processing to obtain n × n order reachable matrix A 3；
S141, reaching matrix A 3Processing is carried out to find out a reachable matrix A 3The reachable set P, the antecedent set Q and the intersection set S corresponding to each element are obtained to obtain a PQS set corresponding to each element;
s145, screening and optimizing key indexes of cost accounting on the basis of the PQS set, screening the indexes from the highest layer of the initial indexes influencing the cost accounting, and selecting the top n 1The item indexes are used as achievement index groups; selecting the first n indexes from the bottom layer 2And (4) taking the item index as a driving index group, outputting a result index group and the driving index group, and screening out key indexes for cost accounting of the power distribution network.
In the method for accounting the asset cost of the main equipment of the power distribution network, the method for analyzing the asset cost of the main equipment of the power distribution network in S2 comprises the following steps: initial investment cost, operation and maintenance cost, overhaul cost, failure disposal cost and retirement disposal cost, wherein:
the initial investment cost refers to the original value of the main equipment assets, the residual value rate of the main equipment, the construction cost, the installation cost and the equipment cost in the initial construction stage;
the operation and maintenance cost refers to the working life of the main and auxiliary equipment of the power distribution network, the number of the auxiliary equipment, the energy cost consumed by the auxiliary equipment in the operation process of the ith year, the cost consumed by the auxiliary equipment in the maintenance process of the ith year, the energy cost consumed by the main equipment in the operation process and the cost consumed by the main equipment in the maintenance process;
the overhaul cost refers to overhaul cost, daily overhaul cost, property management cost and electric power facility protection cost;
the failure disposal cost refers to failure recovery cost, failure loss cost, rush-repair fee, insurance compensation fee, power failure loss fee and social negative effect equivalent fee;
the retirement cost refers to the retirement cost of the main equipment and the residual value of the equipment.
According to the method for accounting the assets of the main equipment of the power distribution network, the method for collecting the assets of the main equipment of the power distribution network comprises a direct collection method, an indirect collection method or a standard operation method.
In the method for accounting the asset cost of the main equipment of the power distribution network, the specific process of S3 is as follows:
s31, initial investment cost CI:
CI＝FA
FA＝FA j+FA s+FA a+FA q
in the formula, FA is the original value of the main equipment asset j、FA s、FA a、FA qRespectively corresponding to the construction cost, the installation cost, the equipment cost and other costs in the initial construction stage, and obtaining the cost by a direct collection method;
s32, operation and maintenance cost CO t：
Figure BDA0002235699320000031
In the formula, n and m are the working life of the main and auxiliary equipment and the number of the auxiliary equipment respectively; CO 2 EijIs the j, j ═ th1. The energy cost consumed by 2 … m auxiliary equipment during the operation of the i year; CO 2 FijThe j is the cost consumed by 1 and 2 … m auxiliary equipment in the maintenance process in the ith year, and the j is collected according to a standard operation method; CO 2 EiThe energy cost consumed in the operation process of the main equipment in the ith year; CO 2 FiCollecting the costs consumed in the maintenance process of the main equipment in the ith year according to a standard operation method;
s33 maintenance cost CR t：
CR t＝CR z+CR j
CR z＝CR z1+CR z2
CR j＝CR j1+CR j2
In the formula, CR zAnd CR jRespectively, direct cost of maintenance and indirect cost of maintenance, CR z1、CR z2、CR j1、CR j2Respectively calculating major repair cost, daily repair cost, property management cost and electric power facility protection cost, wherein the major repair cost adopts a direct collection method, the daily repair cost is collected by a standard operation method, and the property management cost and the electric power facility protection cost are collected by apportionment;
s34, failure handling cost CF t
CF t＝CF r+CF s
CF r＝CF r1+CF r2
CF s＝CF s1+CF s2+CF s3
Figure BDA0002235699320000032
Figure BDA0002235699320000033
In the formula, CF rFor failure recovery cost, CF sCost is lost for failure; CF (compact flash) r1、CF r2For rush-repair and insurance compensation, respectively, CF s1、CF s2、CF s3α average interruption power supply electric quantity value of related users, which are determined by different regions, W jInterrupting power for jth device, T jFor the annual fault interruption time, λ, of the jth equipment jMean annual failure rate, RC, of jth equipment jAverage repair cost, MRRT, for jth equipment jAverage repair time for jth equipment;
s35, retirement disposition cost CD:
CD＝CD t-CD r
Figure BDA0002235699320000034
in the formula, CD tCost of disposal, CD rFor equipment residual value, CD tiThe i is 1,2,3 and 4 are respectively tender charge, demolition charge, transportation charge and storage charge of the scrapping disposal;
s36, a power distribution network main equipment asset cost accounting model:
in the formula, LCC Main equipmentThe full life cycle cost of the main equipment of the distribution network; CI is the initial investment cost; CO 2 tThe operation and maintenance cost of the t year; CR tThe overhaul cost in the t year; CFt is the cost of troubleshooting the year t; the CD is the decommissioning disposal cost of the power distribution network equipment; r is the discount rate; and T is the life cycle of the power distribution network equipment monomer.
In a second aspect, the present invention further provides a system for accounting asset cost of main equipment in a power distribution network, the system comprising:
the key influence index construction module of the main equipment assets of the power distribution network determines influence factors on the asset cost accounting of the main equipment assets of the power distribution network based on the current asset cost accounting situation of the main equipment assets of the power distribution network, and screens key indexes of the cost accounting by adopting an explanation structure model;
the distribution network main equipment asset cost division module is used for analyzing the construction mode of the distribution network main equipment asset cost and providing a method for collecting the distribution network main equipment asset cost;
and the asset cost accounting module of the main equipment of the power distribution network establishes an asset cost accounting model of the main equipment of the power distribution network based on the full life cycle and identifies the running state of the main equipment of the power distribution network.
In the asset cost accounting system for the main equipment of the power distribution network, the key influence index construction module for the main equipment of the power distribution network comprises:
the natural factor index setting module is used for determining influence factors of natural conditions on asset cost accounting of main equipment of the power distribution network;
the economic factor index setting module is used for determining the influence factors of economic conditions on the asset cost accounting of the main equipment of the power distribution network;
the technical factor index setting module is used for determining the influence factors of technical conditions on the asset cost accounting of the main equipment of the power distribution network;
and the key index screening module is used for selecting key indexes of the asset accounting of the main equipment of the power distribution network by using the explaining structure model and taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial indexes of cost accounting.
Due to the adoption of the technical scheme, the invention has the following characteristics:
1. according to the invention, by analyzing the asset cost accounting current situation of the main equipment of the power distribution network, from three dimensions of natural conditions, economic conditions and technical conditions, an explanation structure model is adopted to screen out cost accounting key indexes, identify the asset cost composition category of the main equipment of the power distribution network, provide a method for collecting the asset cost of the main equipment of the power distribution network, establish an asset cost accounting model of the main equipment of the power distribution network, and effectively judge the overhaul, operation and maintenance and retirement of the main equipment;
2. the invention starts from the main equipment of the power distribution network, considers a plurality of dimensionalities influencing the asset cost accounting of the main equipment, and compared with the existing asset cost accounting method of the main equipment of the power distribution network, the invention focuses more on all aspects influencing the asset cost accounting of the main equipment of the power distribution network, more accurately judges the factors influencing the cost accounting, and the accounting result is closer to the actual situation;
3. the method introduces a life cycle idea, divides the asset cost category of the main equipment of the power distribution network from the selected main equipment accounting key indexes, constructs an asset cost accounting model of the main equipment of the power distribution network, can effectively identify the asset running state of the main equipment, reduces the cost of the main equipment of the power distribution network, improves the running efficiency, and provides an effective solution for the asset cost accounting of the main equipment of the power distribution network;
in conclusion, the method can be widely applied to cost accounting of the main equipment of the power distribution network assets.
Drawings
Fig. 1 is a flowchart of asset cost accounting of main equipment of a power distribution network according to embodiment 1 of the present invention;
FIG. 2 is a diagram of influence factors for cost accounting of natural condition of assets of main equipment of a power distribution network according to embodiment 1 of the present invention;
FIG. 3 is a diagram of influence factors for cost accounting of economic conditions of main equipment assets of a power distribution network in embodiment 1 of the invention;
fig. 4 is a factor graph of cost accounting for the asset technical condition of the main equipment in the power distribution network according to embodiment 1 of the present invention.
Fig. 5 is a key index diagram for selecting asset cost accounting of main equipment of a power distribution network in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
as shown in fig. 1, the asset cost accounting method for the main devices of the power distribution network provided in this embodiment, where the power distribution network devices include main devices such as an overhead line, a cable, a tower, a distribution transformer, an isolation switch, and a reactive power compensator, and some auxiliary devices, and play a key role in distributing electric energy in cooperation with the power grid, includes the following steps:
s1, designing asset cost accounting influence factors of the main equipment of the power distribution network from three dimensions of natural conditions, economic conditions and technical conditions based on the asset cost accounting current situation of the main equipment of the power distribution network, and screening out key indexes of asset cost accounting of the main equipment of the power distribution network by adopting an explanation structure model, wherein the method comprises the following steps:
s11, determining influence factors of natural conditions on asset cost accounting of power distribution network
As shown in fig. 2, characteristics of different regions are considered comprehensively, and the current situation of asset cost accounting of main equipment of the power distribution network is combined, the assets of the main equipment of the power distribution network include five aspects of initial investment cost, operation and maintenance cost, overhaul cost, fault disposal cost and retirement disposal cost, and natural conditions all have influence on asset cost accounting of the power distribution network, wherein the natural condition influence factors of the initial investment cost are as follows: landform, ground endurance, average altitude, pollution level and average wind speed; the natural condition factors of the operation and maintenance cost and the overhaul cost are as follows: precipitation, average wind speed, air temperature, ground icing condition and humidity; the natural condition factors of the fault disposal cost are typhoon weather, thunder and lightning and natural disaster occurrence frequency.
S12, determining influence factors of economic conditions on asset cost accounting of main equipment of the power distribution network
As shown in fig. 3, the regional economic development characteristics are comprehensively considered, the present situation of asset cost accounting of main equipment of the power distribution network is combined, from five aspects of initial investment cost, operation and maintenance cost, overhaul cost, fault handling cost and retirement handling cost of the main equipment of the power distribution network, economic conditions have influence on asset cost accounting of the power distribution network, and the influence factors on the initial investment cost are that the inflation rate of currency, the price of human materials, the current exchange rate, the price of a main transformer and the price of cables are considered; the influence factors on the operation and maintenance cost and the overhaul cost are regional GDP, regional heavy industry proportion, regional service industry proportion, regional renewable energy admission, labor cost and local material price; the influencing factors of the fault disposal cost are primary and secondary equipment price and regional economic development level; the influence factors on the retirement disposition cost include market liquidity of the power equipment, site lease fees and the like.
S13, determining influence factors of asset cost accounting of main equipment of the power distribution network under technical conditions
As shown in fig. 4, the quality of the main equipment assets is considered comprehensively, the present situation of the asset cost accounting of the main equipment assets of the power distribution network is combined, and from five aspects of the initial investment cost, the operation and maintenance cost, the overhaul cost, the fault treatment cost and the retirement treatment cost of the main equipment assets of the power distribution network, the technical conditions have influence on the asset cost accounting of the power distribution network, and the influence factors on the initial investment cost are intelligent equipment selection, project construction period, cable and optical cable length, distribution line refinement degree and transmission capacity; the influence factors on the operation and maintenance cost and the overhaul cost are the update frequency of the intelligent equipment, the acceptance degree of regional renewable energy sources, the average learning history of overhaul workers, the development degree of an intelligent operation and inspection system, the average consumption time of overhaul work, the time of live working and the service life of the equipment; the influence factor on the fault handling cost is the average power failure duration of the area; the factors influencing retirement disposal cost are the updating frequency of the regional equipment and the like.
S14, as shown in FIG. 5, the method comprises the following steps of taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial cost accounting indexes, and selecting key indexes of the asset accounting of the main equipment of the power distribution network by utilizing an explanation structure model:
s141, inputting the established initial index system of the asset cost accounting of the main equipment of the power distribution network into an explanation structure model as input data to form a data matrix A with the order of n multiplied by m 0To appropriately reduce the screening range of the influence index, i.e.
Figure BDA0002235699320000061
In the formula, x nmAnd the value of the nth primary selection index of the mth group of data is shown, n is the number of cost accounting indexes, and m is the number of data groups.
S142, data matrix A 0Processing is carried out to calculate a data matrix A 0Calculating the correlation coefficient between every two cost items to obtain an n multiplied by n order coefficient matrix A 1。
With A 0The first column and the second column of (2) are examples, and the calculation formula of the correlation coefficient of the two cost accounting initial indexes is as follows:
Figure BDA0002235699320000071
in the formula, r 12And j represents a column of one index.
Obtaining an n × n order coefficient matrix A 1：
Figure BDA0002235699320000072
In the formula, r nnIs a correlation coefficient.
S143, according to a preset threshold value x, pairing the coefficient matrix A 1Processing to obtain n × n order adjacency matrix A 2The treatment method is as follows:
if r ijWhen > χ, let r ijIf not, let r ijWhere χ can be defined, and is typically 0.85, the resulting n × n order adjacency matrix a 2Comprises the following steps:
Figure BDA0002235699320000073
s144, pair of adjacent matrixes A 2Processing to obtain n × n order reachable matrix A 3Wherein is adjacent to the matrix A 2And reachable matrix A 3The following operational rules are satisfied:
(A 2+I) k-1≠(A 2+I) k＝(A 2+I) k+1＝A 3
in the formula, A 2Representing a adjacency matrix between the indices; a. the 3Representing a reachable matrix between the indicators; i represents an identity matrix; k represents a constant.
S145, reaching matrix A 3Processing to find A 3The reachable set P, the antecedent set Q and the intersection S of the reachable set P and the antecedent set Q corresponding to each element. Solving the reachable set P is to find out the column corresponding to the element 1 in each row; solving for the first set Q is to find the row corresponding to the element 1 in each column.
And S146, obtaining the reachable set P, the antecedent set Q and the intersection S of the reachable set P and the antecedent set Q corresponding to each element through processing, and forming a PQS set.
S147, on the basis of obtaining the PQS set, cost accounting key index screening and optimizing are carried out, indexes are screened from the highest layer of cost accounting initial indexes, and the top n is selected 1The item indexes are used as achievement index groups; selecting the first n indexes from the bottom layer 2And (4) taking the item index as a driving index group, outputting a result index group and the driving index group, and screening out key indexes for asset cost accounting of main equipment of the power distribution network.
S2, analyzing the asset cost composition mode of the main equipment of the power distribution network, namely initial investment cost, operation and maintenance cost, overhaul cost, fault disposal cost and retirement disposal cost, and designing a power distribution network main equipment asset cost collection method.
Specifically, the initial investment cost refers to the original value of the main equipment assets, the residual value rate of the main equipment, the construction cost, the installation cost and the equipment cost in the initial construction stage;
the operation and maintenance cost refers to the working life of the main and auxiliary equipment of the power distribution network, the number of the auxiliary equipment, the energy cost consumed by the auxiliary equipment in the operation process of the ith year, the cost consumed by the auxiliary equipment in the maintenance process of the ith year, the energy cost consumed by the main equipment in the operation process and the cost consumed by the main equipment in the maintenance process;
the overhaul cost refers to overhaul cost, daily overhaul cost, property management cost and electric power facility protection cost;
the failure disposal cost refers to failure recovery cost, failure loss cost, rush-repair fee, insurance compensation fee, power failure loss fee and social negative effect equivalent fee;
the retirement cost refers to the retirement cost of the main equipment and the residual value of the equipment.
Specifically, the method for designing the collection of the asset cost of the main equipment of the power distribution network comprises the following steps:
s21 direct collection method
Aiming at the cost which is difficult to be detailed to the main equipment assets, the concept of 'cost collection combining generation amount and quota' is adopted, starting from a standard operation library, an operation quota library and the like, the operation maintenance and overhaul operation cost (such as labor cost, material cost, mechanical shift cost and the like) is calculated by taking the work order of the main equipment assets of the power distribution network as a carrier for operation generation and actual consumption and combining with a quota standard, and the purpose of accurately collecting the direct cost to the main equipment assets is realized.
S22 indirect aggregation method
And the detailed subject accounting of other operation expenses under the production cost-power transmission and distribution cost is adopted, and the cost of the whole life cycle of the main equipment assets is accounted in a sharing mode.
S23, Standard working method
Aiming at the problem that the cost is difficult to be collected in the operation and maintenance stage, an operation and maintenance standard operation library is introduced, typical operations are determined through the standard operation library, the manual, material and mechanical shift quota of each typical operation is determined, the unit price measurement and calculation of the manual, material and mechanical shift are carried out, the standard operation cost is established, the relationship between the operation and maintenance workload and the standard operation cost is associated, and the collection of the operation and maintenance cost to main equipment assets is realized.
S3, establishing a power distribution network main equipment asset cost accounting model based on the full life cycle idea, comprising the following steps:
s31, initial investment cost:
CI＝FA
FA＝FA j+FA s+FA a+FA q
in the formula, FA is the original value of the main equipment asset j、FA s、FA a、FA qCorresponding to the construction cost, installation cost, equipment cost and other costs in the initial construction stage, and directly collecting the cost, CI tAnd (4) carrying out allocation according to an average age method.
S32, operation and maintenance cost:
Figure BDA0002235699320000091
in the formula, n and m are the working life of the main and auxiliary equipment and the number of the auxiliary equipment respectively; CO 2 EijThe energy cost consumed during the operation of the jth auxiliary equipment in the ith year for the jth (j is 1 and 2 … m); CO 2 FijCollecting the costs consumed by jth (j is 1 and 2 … m) auxiliary equipment in the ith year of maintenance according to a standard operation method; CO 2 EiThe energy cost consumed in the operation process of the main equipment in the ith year; CO 2 FiAnd (4) collecting the costs consumed in the maintenance process of the main equipment in the ith year according to a standard operation method.
S33, maintenance cost:
CR t＝CR z+CR j
CR z＝CR z1+CR z2
CR j＝CR j1+CR j2
in the formula, CR zAnd CR jRespectively, direct cost of maintenance and indirect cost of maintenance, CR z1、CR z2、CR j1、CR j2The major repair cost, the daily overhaul cost, the property management cost and the electric power facility protection cost are respectively, the major repair cost can be directly collected, the daily overhaul cost can be collected through a standard operation method, and the property management cost and the electric power facility protection cost can be collected through apportionment.
S34, failure handling cost
CF t＝CF r+CF s
CF r＝CF r1+CF r2
CF s＝CF s1+CF s2+CF s3
Figure BDA0002235699320000092
Figure BDA0002235699320000101
In the formula, CF rFor failure recovery cost, CF sCost is lost for failure; CF (compact flash) r1、CF r2For rush-repair and insurance compensation, respectively, CF s1、CF s2、CF s3Respectively, power failure compensation fee, power failure loss fee and social negative effect equivalent fee. Psi is the average interruption power supply electric quantity value of related users, and is self-determined according to different regions, W jTo jth (station equipment interrupt power, T) jFor the annual fault interruption time, λ, of the jth equipment jMean annual failure rate, RC, of jth equipment jAverage repair cost, MRRT, for jth equipment jThe average repair time is for the jth device.
S35, retirement disposal cost:
CD＝CD t-CD r
Figure BDA0002235699320000102
in the formula, CD tCost of disposal, CD rFor equipment residual value, CD ti(i-1, 2,3,4) are the tender charge, demolition charge, transportation charge, and storage charge of the disposal.
S36, a power distribution network main equipment asset cost accounting model:
Figure BDA0002235699320000103
in the formula: LCC Main equipmentThe full life cycle cost of the main equipment of the distribution network; CI is the initial investment cost; CO 2 tThe operation and maintenance cost of the t year; CR tThe overhaul cost in the t year; CFt is the cost of troubleshooting the year t; the CD is the decommissioning disposal cost of the power distribution network equipment; r is the discount rate; t is a formulaAnd the life cycle of the single power grid equipment.
S37, identifying the running state of the main equipment based on the asset cost accounting model of the main equipment of the power distribution network, providing an effective solution, and effectively judging when to overhaul, operate, maintain and retire the main equipment assets.
Example 2:
this embodiment still provides a distribution network main equipment asset cost accounting system, and it includes:
the key influence index construction module of the main equipment assets of the power distribution network determines influence factors on the asset cost accounting of the main equipment assets of the power distribution network based on the current asset cost accounting situation of the main equipment assets of the power distribution network, and screens key indexes of the cost accounting by adopting an explanation structure model;
the distribution network main equipment asset cost division module is used for analyzing the construction mode of the distribution network main equipment asset cost and providing a method for collecting the distribution network main equipment asset cost;
the asset cost accounting module of the main equipment of the power distribution network establishes an asset cost accounting model of the main equipment of the power distribution network based on the idea of the full life cycle and identifies the running state of the main equipment of the power distribution network.
Preferably, the power distribution network main equipment asset key influence index construction module comprises:
the natural factor index setting module is used for determining influence factors of natural conditions on asset cost accounting of the power distribution network;
the economic factor index setting module is used for determining the influence factors of economic conditions on the asset cost accounting of the main equipment of the power distribution network;
the technical factor index setting module is used for determining the influence factors of technical conditions on the asset cost accounting of the main equipment of the power distribution network;
and the key index screening module is used for selecting key indexes of the asset accounting of the main equipment of the power distribution network by using the explaining structure model and taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial indexes of cost accounting.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. The above embodiments are only used for illustrating the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims (8)

1. A method for accounting asset cost of main equipment of a power distribution network is characterized by comprising the following steps:
s1, determining influence factors on the asset cost accounting of the main equipment of the power distribution network based on the asset cost accounting current situation of the main equipment of the power distribution network, and screening cost accounting indexes by adopting an explanation structure model;
s2, analyzing the asset cost composition mode of the main equipment of the power distribution network, and determining an asset cost collection method of the main equipment of the power distribution network;
s3, establishing a power distribution network main equipment asset cost accounting model based on the whole life cycle;
and S4, identifying the running state of the main equipment of the power distribution network based on the asset cost accounting model of the main equipment of the power distribution network.
2. The asset cost accounting method for main equipment of a power distribution network according to claim 1, wherein the specific process of S1 is as follows:
s11, determining influence factors of natural conditions on asset cost accounting of main equipment of the power distribution network;
s12, determining influence factors of economic conditions on asset cost accounting of main equipment of the power distribution network;
s13, determining influence factors of technical conditions on asset cost accounting of main equipment of the power distribution network;
s14, taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial cost accounting indexes, and screening key indexes of the asset accounting of the main equipment of the power distribution network by using the explanation structure model.
3. The asset cost accounting method for main equipment of a power distribution network according to claim 2, wherein the specific process of S14 is as follows:
s141, inputting the established initial index of the asset cost accounting of the main equipment of the power distribution network into an explanation structure model as input data to form a data matrix A of n multiplied by m orders 0Wherein n is the number of initial indexes of cost accounting, and m is the number of data sets;
s142, data matrix A 0Processing is carried out to calculate a data matrix A 0Calculating the correlation coefficient between every two initial indexes by using the medium n cost items to obtain an n multiplied by n order coefficient matrix A 1；
S143, according to a preset threshold value x, pairing the coefficient matrix A 1Processing to obtain n × n order adjacency matrix A 2；
S144, pair of adjacent matrixes A 2Processing to obtain n × n order reachable matrix A 3；
S141, reaching matrix A 3Processing is carried out to find out a reachable matrix A 3The reachable set P, the antecedent set Q and the intersection set S corresponding to each element are obtained to obtain a PQS set corresponding to each element;
s145, screening and optimizing key indexes of cost accounting on the basis of the PQS set, screening the indexes from the highest layer of the initial indexes influencing the cost accounting, and selecting the top n 1The item indexes are used as achievement index groups; selecting the first n indexes from the bottom layer 2And (4) taking the item index as a driving index group, outputting a result index group and the driving index group, and screening out key indexes for cost accounting of the power distribution network.
4. The method for accounting the asset cost of the main equipment in the power distribution network according to any one of claims 1 to 3, wherein the analyzing the asset cost of the main equipment in the power distribution network in S2 is performed by: initial investment cost, operation and maintenance cost, overhaul cost, failure disposal cost and retirement disposal cost, wherein:
the initial investment cost refers to the original value of the main equipment assets, the residual value rate of the main equipment, the construction cost, the installation cost and the equipment cost in the initial construction stage;
the operation and maintenance cost refers to the working life of the main and auxiliary equipment of the power distribution network, the number of the auxiliary equipment, the energy cost consumed by the auxiliary equipment in the operation process of the ith year, the cost consumed by the auxiliary equipment in the maintenance process of the ith year, the energy cost consumed by the main equipment in the operation process and the cost consumed by the main equipment in the maintenance process;
the overhaul cost refers to overhaul cost, daily overhaul cost, property management cost and electric power facility protection cost;
the failure disposal cost refers to failure recovery cost, failure loss cost, rush-repair fee, insurance compensation fee, power failure loss fee and social negative effect equivalent fee;
the retirement cost refers to the retirement cost of the main equipment and the residual value of the equipment.
5. The method for accounting the asset cost of the main equipment in the power distribution network according to any one of claims 1 to 3, wherein the method for collecting the asset cost of the main equipment in the power distribution network comprises a direct collection method, an indirect collection method or a standard operation method.
6. The asset cost accounting method for main equipment in a power distribution network according to claim 5, wherein the specific process of S3 is as follows:
s31, initial investment cost CI:
CI＝FA
FA＝FA j+FA s+FA a+FA q
in the formula, FA is the original value of the main equipment asset j、FA s、FA a、FA qRespectively corresponding to the construction cost, the installation cost, the equipment cost and other costs in the initial construction stage, and obtaining the cost by a direct collection method;
s32, operation and maintenance cost CO t：
Figure FDA0002235699310000021
In the formula, n and m are the working life of the main and auxiliary equipment and the number of the auxiliary equipment respectively; CO 2 EijFor j 1,2 … m accessories operating in the i yearEnergy costs consumed in the process; CO 2 FijThe j is the cost consumed by 1 and 2 … m auxiliary equipment in the maintenance process in the ith year, and the j is collected according to a standard operation method; CO 2 EiThe energy cost consumed in the operation process of the main equipment in the ith year; CO 2 FiCollecting the costs consumed in the maintenance process of the main equipment in the ith year according to a standard operation method;
s33 maintenance cost CR t：
CR t＝CR z+CR j
CR z＝CR z1+CR z2
CR j＝CR j1+CR j2
In the formula, CR zAnd CR jRespectively, direct cost of maintenance and indirect cost of maintenance, CR z1、CR z2、CR j1、CR j2Respectively calculating major repair cost, daily repair cost, property management cost and electric power facility protection cost, wherein the major repair cost adopts a direct collection method, the daily repair cost is collected by a standard operation method, and the property management cost and the electric power facility protection cost are collected by apportionment;
s34, failure handling cost CF t
CF t＝CF r+CF s
CF r＝CF r1+CF r2
CF s＝CF s1+CF s2+CF s3
Figure FDA0002235699310000031
Figure FDA0002235699310000032
In the formula, CF rFor failure recovery cost, CF sCost is lost for failure; CF (compact flash) r1、CF r2For rush-repair and insurance compensation, respectively, CF s1、CF s2、CF s3Respectively as power failure compensation fee and power failure loss feeThe equivalent cost of social negative influence is psi, the value of the average interrupted power supply electric quantity of related users is determined according to different regions, W jInterrupting power for jth device, T jFor the annual fault interruption time, λ, of the jth equipment jMean annual failure rate, RC, of jth equipment jAverage repair cost, MRRT, for jth equipment jAverage repair time for jth equipment;
s35, retirement disposition cost CD:
CD＝CD t-CD r
in the formula, CD tCost of disposal, CD rFor equipment residual value, CD tiThe i is 1,2,3 and 4 are respectively tender charge, demolition charge, transportation charge and storage charge of the scrapping disposal;
s36, a power distribution network main equipment asset cost accounting model:
Figure FDA0002235699310000034
in the formula, LCC Main equipmentThe full life cycle cost of the main equipment of the distribution network; CI is the initial investment cost; CO 2 tThe operation and maintenance cost of the t year; CR tThe overhaul cost in the t year; CFt is the cost of troubleshooting the year t; the CD is the decommissioning disposal cost of the power distribution network equipment; r is the discount rate; and T is the life cycle of the power distribution network equipment monomer.
7. A power distribution network capital equipment asset cost accounting system, the system comprising:
the key influence index construction module of the main equipment assets of the power distribution network determines influence factors on the asset cost accounting of the main equipment assets of the power distribution network based on the current asset cost accounting situation of the main equipment assets of the power distribution network, and screens key indexes of the cost accounting by adopting an explanation structure model;
the distribution network main equipment asset cost division module is used for analyzing the construction mode of the distribution network main equipment asset cost and providing a method for collecting the distribution network main equipment asset cost;
and the asset cost accounting module of the main equipment of the power distribution network establishes an asset cost accounting model of the main equipment of the power distribution network based on the full life cycle and identifies the running state of the main equipment of the power distribution network.
8. The system of claim 7, wherein the key impact indicators for the power distribution network capital equipment assets comprise:
the natural factor index setting module is used for determining influence factors of natural conditions on asset cost accounting of main equipment of the power distribution network;
the economic factor index setting module is used for determining the influence factors of economic conditions on the asset cost accounting of the main equipment of the power distribution network;
the technical factor index setting module is used for determining the influence factors of technical conditions on the asset cost accounting of the main equipment of the power distribution network;
and the key index screening module is used for selecting key indexes of the asset accounting of the main equipment of the power distribution network by using the explaining structure model and taking the influence factors of natural conditions, economic conditions and technical conditions on the asset accounting of the main equipment of the power distribution network as initial indexes of cost accounting.
CN201910982648.6A 2019-10-16 2019-10-16 Asset cost accounting method and system for main equipment of power distribution network Pending CN110782279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910982648.6A CN110782279A (en) 2019-10-16 2019-10-16 Asset cost accounting method and system for main equipment of power distribution network

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910982648.6A CN110782279A (en) 2019-10-16 2019-10-16 Asset cost accounting method and system for main equipment of power distribution network

Publications (1)

Publication Number Publication Date
CN110782279A true CN110782279A (en) 2020-02-11

Family

ID=69385595

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910982648.6A Pending CN110782279A (en) 2019-10-16 2019-10-16 Asset cost accounting method and system for main equipment of power distribution network

Country Status (1)

Country Link
CN (1) CN110782279A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113822536A (en) * 2021-08-26 2021-12-21 国网河北省电力有限公司邢台供电分公司 Power distribution network index evaluation method based on branch definition algorithm
CN113947273A (en) * 2021-05-21 2022-01-18 国网河北省电力有限公司衡水供电分公司 Multi-path distribution network cost accounting system based on big data

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113947273A (en) * 2021-05-21 2022-01-18 国网河北省电力有限公司衡水供电分公司 Multi-path distribution network cost accounting system based on big data
CN113822536A (en) * 2021-08-26 2021-12-21 国网河北省电力有限公司邢台供电分公司 Power distribution network index evaluation method based on branch definition algorithm

Similar Documents

Publication Publication Date Title
Feng et al. Solution sensitivity-based scenario reduction for stochastic unit commitment
CN107123982B (en) Power distribution network reliability economic benefit analysis method based on equipment transaction
CN107194149B (en) Highway electromechanical system health index evaluation method
CN102930482A (en) Investment effect evaluation method for county power distribution networks
CN103793859B (en) A kind of wind power plant operation monitoring and event integrated evaluating method
CN108154244A (en) The O＆M methods, devices and systems of real estate power equipment
US20150088595A1 (en) Systems and Methods for Evaluating Risks Associated with a Contractual Service Agreement
CN109165809B (en) Power grid planning project investment sequencing assessment method under new electricity-to-electricity environment
CN104166788A (en) Overhead transmission line optimal economic life range assessment method
CN105303331A (en) Transformer repair risk decision-making method
CN104680254A (en) Method for optimizing power grid planning scheme based on comprehensive cost model
CN110782279A (en) Asset cost accounting method and system for main equipment of power distribution network
CN105956781A (en) Power grid equipment life cycle cost calculation method
CN108665181A (en) A kind of appraisal procedure and device of distribution network reliability
CN110309945A (en) Power distribution station project optimizing evaluation method based on G1- entropy assessment
CN106779436A (en) A kind of Electric Power Network Planning stage construction harmony comprehensive estimation method
CN104866922A (en) User off-network prediction method and apparatus
CN115186964A (en) Power distribution network line risk prediction system and method considering subjective evaluation data
CN109902344A (en) Short/Medium Span Bridge group structure performance prediction apparatus and system
CN112884572A (en) Multi-microgrid transaction optimization method and system under credit risk
CN117273456A (en) Project cost intelligent management system based on big data technology
CN107590747A (en) Power grid asset turnover rate computational methods based on the analysis of comprehensive energy big data
CN113327047B (en) Power marketing service channel decision method and system based on fuzzy comprehensive model
CN105678008B (en) A kind of power transformer economic surplus lifetime estimation method and system
CN104281934A (en) Operation evaluation method applicable to full life cycle management of network distribution device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200211