CN113344410B - Multi-dimensional evaluation method, system, terminal and storage medium for energy conservation transformation of power distribution network - Google Patents
Multi-dimensional evaluation method, system, terminal and storage medium for energy conservation transformation of power distribution network Download PDFInfo
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Abstract
The invention provides a power distribution network energy-saving transformation multidimensional assessment method, a system, a terminal and a storage medium considering carbon neutralization, wherein the method comprises the following steps: formulating an energy-saving transformation multi-dimensional evaluation system of the power distribution network; calculating the cost of the power distribution network under each dimension of energy saving transformation; establishing a power distribution network energy-saving transformation benefit evaluation model taking project total investment cost as a minimum target and taking carbon neutralization as a constraint; solving the benefit evaluation model by utilizing an ant colony algorithm to obtain an optimal solution; and forming a comprehensive evaluation result of energy conservation transformation of the power distribution network. According to the invention, on the basis of considering carbon neutralization, multi-dimensional comprehensive evaluation analysis can be performed on the benefits of project transformation from four aspects of project construction, energy conservation and consumption reduction, clean energy and environmental impact of the energy conservation transformation of the power distribution network, so that a guiding basis is provided for evaluation decision making of the energy conservation transformation project of the power distribution network, and the low-carbon water-retention level of the power distribution network can be indirectly improved.
Description
Technical Field
The invention relates to the technical field of power grid energy conservation, in particular to a power distribution network energy conservation transformation multidimensional evaluation method, a system, a terminal and a storage medium.
Background
At present, along with the deep popularity of the green development concept, the energy-saving and environment-friendly industry is broad-leaved forward, and the electric power is taken as an important energy source for national economy development, so that power grid enterprises constantly explore on energy-saving and loss-reducing measures, various energy-saving transformation projects are provided, and the call of national sustainable development is positively responded.
However, the evaluation method adopted for the power grid transformation project is mainly evaluated by relying on expert experience in the related field, and the technical performance and economic benefit in the evaluation basis occupy absolute important positions, so that social and environmental influences on the transformation project are often ignored.
Disclosure of Invention
The purpose of the invention is that: the invention provides a multi-dimensional evaluation method, a system, a terminal and a storage medium for energy conservation transformation of a power distribution network, which can carry out multi-dimensional comprehensive evaluation analysis on the benefits of the energy conservation transformation of the power distribution network from four aspects of project construction, energy conservation and consumption reduction, clean energy and environmental influence of the energy conservation transformation of the power distribution network on the basis of considering carbon neutralization, provide guidance basis for evaluation decision-making of the energy conservation transformation project of the power distribution network, and indirectly improve low-carbon water retention level of the power grid.
In order to achieve the above object, the present invention provides a multi-dimensional evaluation method for energy saving transformation of a power distribution network, comprising:
according to dimension indexes of energy-saving transformation of the power distribution network, a multi-dimensional evaluation system of energy-saving transformation of the power distribution network is formulated;
according to the multi-dimensional evaluation system of the energy-saving transformation of the power distribution network, calculating to obtain the cost of the energy-saving transformation of the power distribution network in each dimension;
according to the cost of the energy-saving transformation of the power distribution network in each dimension, a power distribution network energy-saving transformation benefit evaluation model taking the lowest project total investment cost as a target and taking carbon neutralization as a constraint condition is established;
solving and calculating the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm to obtain an optimal solution of the power distribution network energy-saving transformation benefit evaluation model;
and obtaining a comprehensive evaluation result of energy conservation transformation of the power distribution network according to the optimal solution.
Further, the dimension index of the energy-saving transformation of the power distribution network comprises: project construction, energy conservation, consumption reduction, clean energy and environmental impact; the cost of the power distribution network under each dimension of energy-saving transformation comprises: project construction cost, energy saving and consumption reduction cost, clean energy cost and environmental impact cost.
Further, the project construction cost has a calculation formula as follows:
C s ＝λ a S s +μζ 1 S s
wherein C is s The unit of the project construction cost is ten thousand yuan; lambda (lambda) a The average manufacturing cost is modified for the power supply capacity energy conservation of the unit power distribution network without the construction of the distributed clean power supply, and the unit is MVA/ten thousand yuan; s is S s The method comprises the steps of supplying power to a power distribution network energy-saving transformation project with total capacity in MVA; mu is the unit carbon emission transaction cost, and the unit is ten thousand yuan/ton; zeta type 1 The carbon emission intensity corresponding to the power supply capacity of the unit power distribution network is measured in tons/ten thousand yuan;
the energy saving and consumption reduction cost is calculated by the following formula:
C ES ＝eP ES T+μζ 2 P ES
wherein C is ES The unit is ten thousand yuan for saving energy and reducing consumption cost; p (P) ES Energy saving power in MW/hr for average hourly; t is the number of hours per year, in hours; e is electricity price per kWh, and the unit is yuan/kWh; zeta type 2 The carbon emission intensity corresponding to the energy-saving transformation capacity of the unit power distribution network is measured in tons/ten thousand yuan;
the clean energy cost has the following calculation formula:
C DG ＝λ b S DG +μζ 3 S DG
wherein C is DG The unit is ten thousand yuan for clean energy cost; lambda (lambda) b The unit is kVA/ten thousand yuan; s is S DG The unit is kVA for newly increasing the capacity of the distributed clean power supply; zeta type 3 The carbon emission intensity corresponding to the unit of the distributed clean power supply capacity is measured in tons/ten thousand yuan;
the environmental impact cost represents the ecological environment transformation cost which is improved and then reduced to the surrounding environment after the energy conservation transformation of the power distribution network is completed, and the calculation formula is as follows:
C ECO ＝μεζ 4 S s
wherein C is ECO Is the cost of environmental impact in tens of thousandsA meta-element; zeta type 4 Carbon emission intensity corresponding to unit power supply capacity of power distribution network, unit is ton/ten thousand yuan, and zeta is present 4 ＝ζ 1 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon is the ecological improvement conversion rate of the power distribution network, and the unit is percentage.
Further, the power distribution network energy-saving transformation benefit evaluation model is calculated by adopting the following formula:
min f＝C min ＝C s +C DG -C ES -C ECO +△C CO2
the method comprises the following steps:
min f＝λ a S s +μζ 1 S s +λ b S DG +μζ 3 S DG +△C CO2 -eP ES T-μζ 2 P ES -μεζ 4 S s
in the formula DeltaC CO2 The carbon emission transaction cost is ten thousand yuan, and delta C is calculated as CO2 >0, the cost delta C of the power distribution network after energy conservation transformation is also required CO2 Carbon neutralization can be realized only by the cost of the power distribution network after energy conservation transformation, and when delta CCO2 is less than or equal to 0, the carbon neutralization can be realized by the power distribution network after energy conservation transformation.
Further, the constraint includes: carbon neutralization constraints and other constraints.
Further, the carbon neutralization constraint condition adopts the following calculation formula:
the other constraint conditions are specifically as follows:
0<λ a
0<λ b
0<ε<1
|P ES |<|S s |。
further, according to the optimal solution, a comprehensive evaluation result of energy conservation transformation of the power distribution network is obtained, and the method comprises the following steps:
constructing a comprehensive evaluation table according to the optimal solution;
carrying out single-factor fuzzy evaluation on each index of the comprehensive evaluation table respectively to obtain an evaluation vector of each index;
constructing a fuzzy matrix of a fuzzy comprehensive evaluation model according to the evaluation vector;
and obtaining the comprehensive evaluation result of the fuzzy comprehensive evaluation model according to the fuzzy matrix of the fuzzy comprehensive evaluation model.
The invention also provides a multidimensional evaluation system for energy conservation transformation of the power distribution network, which comprises: the system comprises a system construction module, a cost calculation module, an evaluation model construction module, an optimal solution calculation module and an evaluation result acquisition module, wherein,
the system construction module is used for formulating a multi-dimensional evaluation system for energy conservation transformation of the power distribution network according to dimension indexes of the energy conservation transformation of the power distribution network;
the cost calculation module is used for calculating and obtaining the cost of the energy-saving transformation of the power distribution network in each dimension according to the energy-saving transformation multidimensional evaluation system of the power distribution network;
the evaluation model construction module is used for constructing a power distribution network energy-saving transformation benefit evaluation model taking project total investment cost as a target and carbon neutralization as a constraint condition according to the cost of the power distribution network energy-saving transformation in each dimension;
the optimal solution calculation module is used for solving and calculating the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm to obtain an optimal solution of the power distribution network energy-saving transformation benefit evaluation model;
and the evaluation result acquisition module is used for acquiring a comprehensive evaluation result of energy conservation transformation of the power distribution network according to the optimal solution.
The invention also provides a computer terminal device, comprising: one or more processors; a memory coupled to the processor for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the power distribution network energy conservation transformation multidimensional assessment method as recited in any one of the preceding claims.
The invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements a multi-dimensional assessment method of energy conservation transformation of a power distribution network as described in any one of the above.
Compared with the prior art, the multi-dimensional evaluation method, the system, the terminal and the storage medium for energy conservation transformation of the power distribution network have the beneficial effects that:
1. in the process of evaluating the energy-saving transformation project of the power distribution network, the content options of the bottom layer indexes are subdivided, so that the index data are normalized and standardized, and the accuracy of an evaluation result is ensured.
2. The index system provided by the invention comprises a plurality of indexes for evaluating the energy conservation of the power distribution network, and the characteristics of adaptability, coordination and the like of the energy conservation transformation of the power distribution network are highlighted; the energy-saving transformation evaluation system, the evaluation model, the evaluation standard and the evaluation index weight of the power distribution network are analyzed and established, and the current energy-saving transformation level of the power distribution network can be quantitatively reflected from multiple angles.
3. According to the invention, on the basis of considering carbon neutralization, multi-dimensional comprehensive evaluation analysis is carried out on the benefits of project transformation from four aspects of project construction, energy conservation and consumption reduction, clean energy and environmental impact of the energy conservation transformation of the power distribution network, so that a guiding basis is provided for evaluation decision-making of the energy conservation transformation project of the power distribution network, and the low-carbon water-retention level of the power distribution network can be indirectly improved.
Drawings
FIG. 1 is a flow diagram of a multi-dimensional evaluation method for energy conservation transformation of a power distribution network, which is provided by the invention;
fig. 2 is a schematic structural diagram of a multi-dimensional evaluation system for energy conservation transformation of a power distribution network.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the step numbers used herein are for convenience of description only and are not limiting as to the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As shown in fig. 1, the method for evaluating the energy conservation transformation of the power distribution network in a multidimensional manner at least comprises the following steps:
s1, formulating a multi-dimensional evaluation system for energy conservation transformation of a power distribution network according to dimension indexes of the energy conservation transformation of the power distribution network;
specifically, the dimension index of the energy-saving transformation of the power distribution network comprises: project construction, energy conservation, consumption reduction, clean energy and environmental impact;
s2, calculating to obtain the cost of the energy-saving transformation of the power distribution network in each dimension according to the energy-saving transformation multidimensional evaluation system of the power distribution network;
specifically, the cost of the power distribution network energy-saving transformation under each dimension comprises: project construction cost, energy saving and consumption reduction cost, clean energy cost and environmental impact cost.
The project construction cost is calculated by the following formula:
C s ＝λ a S s +μζ 1 S s
wherein C is s The unit of the project construction cost is ten thousand yuan; lambda (lambda) a The average manufacturing cost is modified for the power supply capacity energy conservation of the unit power distribution network without the construction of the distributed clean power supply, and the unit is MVA/ten thousand yuan; s is S s The method comprises the steps of supplying power to a power distribution network energy-saving transformation project with total capacity in MVA; mu is the unit carbon emission transaction cost, and the unit is ten thousand yuan/ton; zeta type 1 The carbon emission intensity corresponding to the power supply capacity of the unit power distribution network is measured in tons/ten thousand yuan;
the energy saving and consumption reduction cost is calculated by the following formula:
C ES ＝eP ES T+μζ 2 P ES
wherein C is ES The unit is ten thousand yuan for saving energy and reducing consumption cost; p (P) ES Energy saving power in MW/hr for average hourly; t is the number of hours per year, in hours; e is electricity price per kWh, and the unit is yuan/kWh; zeta type 2 The carbon emission intensity corresponding to the energy-saving transformation capacity of the unit power distribution network is measured in tons/ten thousand yuan;
the clean energy cost has the following calculation formula:
C DG ＝λ b S DG +μζ 3 S DG
wherein C is DG The unit is ten thousand yuan for clean energy cost; lambda (lambda) b The unit is kVA/ten thousand yuan; s is S DG The unit is kVA for newly increasing the capacity of the distributed clean power supply; zeta type 3 The carbon emission intensity corresponding to the unit of the distributed clean power supply capacity is measured in tons/ten thousand yuan;
the environmental impact cost represents the ecological environment transformation cost which is improved and then reduced to the surrounding environment after the energy conservation transformation of the power distribution network is completed, and the calculation formula is as follows:
C ECO ＝μεζ 4 S s
wherein C is ECO The unit is ten thousand yuan for environmental impact cost; zeta type 4 Carbon emission intensity corresponding to unit power supply capacity of power distribution network, unit is ton/ten thousand yuan, and zeta is present 4 ＝ζ 1 The method comprises the steps of carrying out a first treatment on the surface of the Epsilon is ecological improvement of power distribution networkConversion, in percent.
S3, according to the cost of the energy-saving transformation of the power distribution network in each dimension, establishing a power distribution network energy-saving transformation benefit evaluation model taking project total investment cost as a target and taking carbon neutralization as a constraint condition;
specifically, the power distribution network energy-saving transformation benefit evaluation model is calculated by adopting the following formula:
min f＝C min ＝C s +C DG -C ES -C ECO +△C CO2
the method comprises the following steps:
min f＝λ a S s +μζ 1 S s +λ b S DG +μζ 3 S DG +△C CO2 -eP ES T-μζ 2 P ES -μεζ 4 S s
in the formula DeltaC CO2 The carbon emission transaction cost is ten thousand yuan, and delta C is calculated as CO2 >0, the cost delta C of the power distribution network after energy conservation transformation is also required CO2 Carbon neutralization can be realized only by the cost of the power distribution network after energy conservation transformation, and when delta CCO2 is less than or equal to 0, the carbon neutralization can be realized by the power distribution network after energy conservation transformation.
The constraint conditions include: carbon neutralization constraints and other constraints.
Specifically, the carbon neutralization constraint condition adopts the following calculation formula:
the other constraint conditions are specifically as follows:
0<λ a
0<λ b
0<ε<1
|P ES |<|S s |。
s4, solving and calculating the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm to obtain an optimal solution of the power distribution network energy-saving transformation benefit evaluation model;
specifically, the ant colony algorithm is utilized to solve the power distribution network energy-saving transformation benefit evaluation model in the step S5 to obtain an optimal solution C min C, i.e s 、C DG 、C ES 、C ECO 、△C CO2 The values of (2) are available.
And S5, obtaining a comprehensive evaluation result of energy conservation transformation of the power distribution network according to the optimal solution.
Specifically, according to the optimal solution, a comprehensive evaluation result of energy conservation transformation of the power distribution network is obtained, and the specific process is as follows:
constructing a comprehensive evaluation table according to the optimal solution;
specifically, according to the cost of energy conservation transformation of the power distribution network in each dimension, a comprehensive evaluation table is formed as follows:
wherein, according to the expert method, the values of omega 1, omega 2, omega 3, omega 4 and omega 5 are respectively 0.25, 0.15, 0.10, 0.20 and 0.30;
when the comprehensive evaluation table is constructed, the method also comprises the pretreatment of index data, wherein the pretreatment of the index data comprises the two processes of data unification and dimensionless;
the multidimensional evaluation system has positive indexes, negative indexes and intermediate indexes, and the data of each index is subjected to uniform treatment to determine the optimized value direction of the comprehensive evaluation result and judge the quality of the energy-saving benefit of the power grid; in addition, the unit and the magnitude of each single index in the index system are usually quite different, each index data has incoordination, and proper dimensionless treatment is required to be carried out on each index;
let x be an index data, and the negative type data and the intermediate type data are processed in a unified way, so that they can be converted into positive type index data. For negative indicators, let:
x * ＝1/x,x＞0
wherein x is * Is consistent withIndex value of the chemical.
For the intermediate type index, let:
in the formula, [ q ] 1 ,q 2 ]An optimal interval of index data x; m, m is the upper and lower bounds of the index data x, respectively;
the index dimensionless method adopts an extremum processing method, and x is set as positive index data, and then:
x * ＝(x-m)/(M-m)
and respectively carrying out single-factor fuzzy evaluation on each index of the comprehensive evaluation table to obtain an evaluation vector of each index, specifically,
determining an evaluation index set u= { U of an evaluation object 1 ，u 2 ，…，u n }；
Set u= { U 1 ，u 2 ，…，u n The } forms the framework of the evaluation index, where u i (i=1, 2, …, n) is an evaluation index factor, n is the number of index factors; specifically, the set of factors determined by the 5 evaluation indexes set according to the invention is as follows: u= (project construction B1, energy saving and consumption reduction B2, clean energy B3, environmental influence B4 and carbon emission cost B5)
Determining a judgment set v= { V 1 ，v 2 ，…，v n }；
Evaluation set v= { V 1 ，v 2 ，…，v n Defining the judging range of the judging result of a certain index factor, wherein V j (j=1, 2, …, m) refers to the evaluation result, each rank corresponds to a fuzzy subset, and m refers to the number of evaluation ranks. Judgment set v= { V 1 ，v 2 ，…，v n The evaluation element in the } can be either a qualitative evaluation or a quantitative evaluation;
in general, the system evaluation set contains 3-7 elements, so that the evaluation results of the transformation project are divided into five levels of excellent, good, medium, qualified and unqualified; the method comprises the following steps: evaluation set v= (excellent, good, medium, pass, fail);
constructing a fuzzy matrix of a fuzzy comprehensive evaluation model according to the evaluation vector, specifically:
establishing a membership matrix X (fuzzy relation matrix);
the membership matrix X represents the membership of the evaluated index factor to the fuzzy subset of the level from the single factor perspective and can be interpreted as the i-th evaluation factor u i One relative to V obtained by single factor evaluation j Is the fuzzy vector X of (2) i ＝{x i1 ，x i2 ，…，x im I=1, 2, …, n; j=1, 2, …, m, i.e.:
the whole matrix contains all information obtained by evaluating the evaluation index set U by the evaluation set V. Wherein x is ij Is a factor u i Having u j Degree of (2) 0.ltoreq.x ij ≤1；
According to the fuzzy matrix of the fuzzy comprehensive evaluation model, the comprehensive evaluation result of the fuzzy comprehensive evaluation model is obtained, and specifically, the quantitative calculation formula of the comprehensive evaluation is as follows:
the above formula represents the overall pair V of the object to be evaluated j Membership of the rank fuzzy subset; wherein,,
is the index data which is preprocessed, w j The weight corresponding to the index.
The membership matrix is composed of membership vectors, wherein numerical values are used for representing the degree values of the index in the membership matrix. When the membership value is 1, the index is completely membership, and when the membership value is 0, the index is completely non-membership. When the membership value is between [0,1], the index is represented as being membership to a certain degree, and the larger the obtained value is, the higher the membership degree is.
Compared with the prior art, the multi-dimensional evaluation method for energy conservation transformation of the power distribution network has the beneficial effects that:
1. in the process of evaluating the energy-saving transformation project of the power distribution network, the content options of the bottom layer indexes are subdivided, so that the index data are normalized and standardized, and the accuracy of an evaluation result is ensured.
2. The index system provided by the invention comprises a plurality of indexes for evaluating the energy conservation of the power distribution network, and the characteristics of adaptability, coordination and the like of the energy conservation transformation of the power distribution network are highlighted; the energy-saving transformation evaluation system, the evaluation model, the evaluation standard and the evaluation index weight of the power distribution network are analyzed and established, and the current energy-saving transformation level of the power distribution network can be quantitatively reflected from multiple angles.
3. According to the invention, on the basis of considering carbon neutralization, multi-dimensional comprehensive evaluation analysis is carried out on the benefits of project transformation from four aspects of project construction, energy conservation and consumption reduction, clean energy and environmental impact of the energy conservation transformation of the power distribution network, so that a guiding basis is provided for evaluation decision-making of the energy conservation transformation project of the power distribution network, and the low-carbon water-retention level of the power distribution network can be indirectly improved.
As shown in fig. 2, the present invention further provides a power distribution network energy saving transformation multidimensional evaluation system 200, which includes: a hierarchy construction module 201, a cost calculation module 202, an evaluation model construction module 203, an optimal solution calculation module 204, and an evaluation result acquisition module 205, wherein,
the system construction module 201 is configured to formulate a multi-dimensional evaluation system for energy conservation transformation of the power distribution network according to dimension indexes of the energy conservation transformation of the power distribution network;
the cost calculation module 202 is configured to calculate and obtain the cost of the power distribution network under each dimension of the power distribution network energy-saving transformation according to the power distribution network energy-saving transformation multi-dimension evaluation system;
the evaluation model construction module 203 is configured to establish a power distribution network energy-saving transformation benefit evaluation model with the lowest project total investment cost as a target and carbon neutralization as a constraint condition according to the cost of the power distribution network energy-saving transformation in each dimension;
the optimal solution calculation module 204 is configured to perform solution calculation on the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm, so as to obtain an optimal solution of the power distribution network energy-saving transformation benefit evaluation model;
and the evaluation result acquisition module 205 is configured to obtain a comprehensive evaluation result of energy conservation transformation of the power distribution network according to the optimal solution.
The invention also provides a computer terminal device, comprising: one or more processors; a memory coupled to the processor for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the power distribution network energy conservation transformation multidimensional assessment method as recited in any one of the preceding claims.
It should be noted that the processor may be a central processing unit (CentralProcessingUnit, CPU), other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegratedCircuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., or any conventional processor that is a control center of the terminal device and that connects various parts of the terminal device using various interfaces and lines.
The memory mainly includes a program storage area, which may store an operating system, an application program required for at least one function, and the like, and a data storage area, which may store related data and the like. In addition, the memory may be a high-speed random access memory, a nonvolatile memory such as a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash memory card (FlashCard), etc., or other volatile solid state memory devices.
It should be noted that the above-mentioned terminal device may include, but is not limited to, a processor, a memory, and those skilled in the art will understand that the above-mentioned terminal device is merely an example, and does not constitute limitation of the terminal device, and may include more or fewer components, or may combine some components, or different components.
The invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements a multi-dimensional assessment method of energy conservation transformation of a power distribution network as described in any one of the above.
It should be noted that the computer program may be divided into one or more modules/units (e.g., computer program), which are stored in the memory and executed by the processor to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are not to be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.
Claims (4)
1. The multi-dimensional evaluation method for energy conservation transformation of the power distribution network is characterized by comprising the following steps of:
s1, formulating a multi-dimensional evaluation system for energy conservation transformation of a power distribution network according to dimension indexes of the energy conservation transformation of the power distribution network;
the dimension index of the energy-saving transformation of the power distribution network comprises: project construction, energy conservation, consumption reduction, clean energy and environmental impact;
s2, calculating to obtain the cost of the energy-saving transformation of the power distribution network in each dimension according to the energy-saving transformation multidimensional evaluation system of the power distribution network;
the cost of the power distribution network under each dimension of energy-saving transformation comprises: project construction cost C s Energy saving and consumption reduction cost C ES Clean energy cost C DG And environmental impact cost C ECO ；
S3, according to the cost of the energy-saving transformation of the power distribution network in each dimension, establishing a power distribution network energy-saving transformation benefit evaluation model taking project total investment cost as a target and taking carbon neutralization as a constraint condition;
the objective function of the power distribution network energy-saving transformation benefit evaluation model is calculated by adopting the following formula:
minf＝C min ＝C s +C DG -C ES -C ECO +△C CO2
in the formula DeltaC CO2 The carbon emission transaction cost is ten thousand yuan, and delta C is calculated as CO2 >0, the cost delta C of the power distribution network after energy conservation transformation is also required CO2 Can only realize carbon neutralization at the cost of delta C CO2 When the energy consumption is less than or equal to 0, the power distribution network after energy conservation transformation can realize carbon neutralization;
s4, solving and calculating the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm to obtain an optimal solution C of the power distribution network energy-saving transformation benefit evaluation model min And C s 、C DG 、C ES 、C ECO 、△C CO2 The values of (2) are all available;
s5, according to the optimal solution, a comprehensive evaluation result of energy conservation transformation of the power distribution network is obtained, and the specific process is as follows:
s501, constructing a comprehensive evaluation table according to the optimal solution;
according to a comprehensive evaluation table formed by the cost of the energy-saving transformation of the power distribution network in each dimension, the comprehensive evaluation table comprises five index factors: project construction cost B1, energy saving and consumption reduction cost B2, clean energy cost B3, environmental impact cost B4 and carbon emission cost B5, and weights omega 1, omega 2, omega 3, omega 4 and omega 5 which are sequentially corresponding to five indexes; wherein, according to the expert method, the values of omega 1, omega 2, omega 3, omega 4 and omega 5 are respectively 0.25, 0.15, 0.10, 0.20 and 0.30;
when the comprehensive evaluation table is constructed, the method also comprises preprocessing of index data, wherein the preprocessing of the index data comprises two processes of data unification and dimensionless;
the index data comprises a positive index, a negative index and an intermediate index, and the data of each index is subjected to uniform treatment to determine the optimized value direction of the comprehensive evaluation result and determine the quality of the energy-saving benefit of the power distribution network;
setting x as index data, carrying out uniform processing on the negative index data and the intermediate index data, and converting the negative index data and the intermediate index data into positive index data;
for negative indicators, let:
x * ＝1/x,x＞0
wherein x is * Is a consistent index value;
for the intermediate type index, let:
in the formula, [ q ] 1 ,q 2 ]An optimal interval of index data x; m, m is the upper and lower bounds of the index data x, respectively;
the index dimensionless method adopts an extremum processing method, and x is set as positive index data, and then:
x * ＝(x-m)/(M-m)
s502, performing single-factor fuzzy evaluation on each index of the comprehensive evaluation table to obtain an evaluation vector of each index,
determining an evaluation index set u= { U of an evaluation object 1 ，u 2 ，…，u n -a }; the set u= { U 1 ，u 2 ，…，u n The } forms the framework of the evaluation index, where u i (i=1, 2, …, n) is an evaluation index factor, n is the number of the evaluation index factors; the set U is specifically a factor set determined by 5 evaluation index factors, namely U= { project construction cost B1, energy saving and consumption reduction cost B2, clean energy cost B3, environmental impact cost B4 and carbon emission cost B5};
determining a judgment set v= { V 1 ，v 2 ，…，v m -a }; evaluation set v= { V 1 ，v 2 ，…，v m The evaluation range of the evaluation result of a certain index factor is limited, wherein V j (j=1, 2, …, m) refers to the evaluation result, each rank corresponds to a fuzzy subset, and m refers to the number of evaluation ranks; specifically, the evaluation results were classified into five grades of excellent, good, medium, acceptable, and unacceptable, thereby obtaining: the evaluation set v= { excellent, good, medium, pass, fail };
s503, constructing a fuzzy relation matrix of a fuzzy comprehensive evaluation model according to the evaluation vector, and specifically:
establishing a membership matrix X, namely a fuzzy relation matrix;
the membership matrix X represents membership of the evaluated index factor to the fuzzy subset of the level as seen from a single factor, and is the ith evaluation index factor u i One relative to V obtained by single factor evaluation j Is the fuzzy vector X of (2) i ＝{x i1 ，x i2 ，…，x im I=1, 2, …, n; j=1, 2, …, m, i.e. the membership matrix X is:
the whole membership matrix X contains all information obtained by evaluating the evaluation index set U by the evaluation set V; wherein x is 0.ltoreq.x ij ≤1；
S504, obtaining the comprehensive evaluation result of the fuzzy comprehensive evaluation model according to the fuzzy relation matrix of the fuzzy comprehensive evaluation model.
2. A power distribution network energy conservation transformation multidimensional assessment system, comprising: the system comprises a system construction module, a cost calculation module, an evaluation model construction module, an optimal solution calculation module and an evaluation result acquisition module, wherein,
the system construction module is used for formulating a multi-dimensional evaluation system for energy conservation transformation of the power distribution network according to dimension indexes of the energy conservation transformation of the power distribution network;
the dimension index of the energy-saving transformation of the power distribution network comprises: project construction, energy conservation, consumption reduction, clean energy and environmental impact;
the system construction module is used for calculating and obtaining the cost of the energy-saving transformation of the power distribution network in each dimension according to the energy-saving transformation multidimensional evaluation system of the power distribution network;
the cost of the power distribution network under each dimension of energy-saving transformation comprises: project construction cost C s Energy saving and consumption reduction cost C ES Clean energy cost C DG And environmental impact cost C ECO ；
The cost calculation module is used for establishing a power distribution network energy-saving transformation benefit evaluation model taking project total investment cost as a target and carbon neutralization as a constraint condition according to the cost of the power distribution network energy-saving transformation in each dimension;
the objective function of the power distribution network energy-saving transformation benefit evaluation model is calculated by adopting the following formula:
minf＝C min ＝C s +C DG -C ES -C ECO +△C CO2
in the formula DeltaC CO2 The carbon emission transaction cost is ten thousand yuan, and delta C is calculated as CO2 >0, the cost delta C of the power distribution network after energy conservation transformation is also required CO2 Can only realize carbon neutralization at the cost of delta C CO2 When the energy consumption is less than or equal to 0, the power distribution network after energy conservation transformation can realize carbon neutralization;
the optimal solution calculation module is used for solving and calculating the power distribution network energy-saving transformation benefit evaluation model by adopting an ant colony algorithm to obtain an optimal solution C of the power distribution network energy-saving transformation benefit evaluation model min And C s 、C DG 、C ES 、C ECO 、△C CO2 The values of (2) are all available;
the evaluation result acquisition module is used for acquiring a comprehensive evaluation result of energy conservation transformation of the power distribution network according to the optimal solution, and the specific process is as follows:
constructing a comprehensive evaluation table according to the optimal solution;
according to a comprehensive evaluation table formed by the cost of the energy-saving transformation of the power distribution network in each dimension, the comprehensive evaluation table comprises five index factors: project construction cost B1, energy saving and consumption reduction cost B2, clean energy cost B3, environmental impact cost B4 and carbon emission cost B5, and weights omega 1, omega 2, omega 3, omega 4 and omega 5 which are sequentially corresponding to five indexes; wherein, according to the expert method, the values of omega 1, omega 2, omega 3, omega 4 and omega 5 are respectively 0.25, 0.15, 0.10, 0.20 and 0.30;
when the comprehensive evaluation table is constructed, the method also comprises preprocessing of index data, wherein the preprocessing of the index data comprises two processes of data unification and dimensionless;
the index data comprises a positive index, a negative index and an intermediate index, and the data of each index is subjected to uniform treatment to determine the optimized value direction of the comprehensive evaluation result and determine the quality of the energy-saving benefit of the power distribution network;
setting x as index data, carrying out uniform processing on the negative index data and the intermediate index data, and converting the negative index data and the intermediate index data into positive index data;
for negative indicators, let:
x * ＝1/x,x＞0
wherein x is * Is a consistent index value;
for the intermediate type index, let:
in the formula, [ q ] 1 ,q 2 ]An optimal interval of index data x; m, m is the upper and lower bounds of the index data x, respectively;
the index dimensionless method adopts an extremum processing method, and x is set as positive index data, and then:
x * ＝(x-m)/(M-m)
respectively carrying out single-factor fuzzy evaluation on each index of the comprehensive evaluation table to obtain an evaluation vector of each index,
determining an evaluation index set u= { U of an evaluation object 1 ，u 2 ，…，u n -a }; the set u= { U 1 ，u 2 ，…，u n The } forms the framework of the evaluation index, where u i (i=1, 2, …, n) is an evaluation index factor, n is the number of the evaluation index factors; the set U is specifically a factor set determined by 5 evaluation index factors, namely U= { project construction cost B1, energy saving and consumption reduction cost B2, clean energy cost B3, environmental impact cost B4 and carbon emission cost B5};
determining a judgment set v= { V 1 ，v 2 ，…，v m -a }; evaluation set v= { V 1 ，v 2 ，…，v m The evaluation range of the evaluation result of a certain index factor is limited, wherein V j (j=1, 2, …, m) refers to the evaluation result, each rank corresponds to a fuzzy subset, and m refers to the number of evaluation ranks; specifically, the evaluation results were classified into five grades of excellent, good, medium, acceptable, and unacceptable, thereby obtaining: the evaluation set v= { excellent, good, medium, pass, fail };
according to the evaluation vector, a fuzzy relation matrix of a fuzzy comprehensive evaluation model is constructed, specifically:
establishing a membership matrix X, namely a fuzzy relation matrix;
the membership matrix X represents membership of the evaluated index factor to the fuzzy subset of the level as seen from a single factor, and is the ith evaluation index factor u i One relative to V obtained by single factor evaluation j Is the fuzzy vector X of (2) i ＝{x i1 ，x i2 ，…，x im I=1, 2, …, n; j=1, 2, …, m, i.e. the membership matrix X is:
the whole membership matrix X contains all information obtained by evaluating the evaluation index set U by the evaluation set V; wherein x is 0.ltoreq.x ij ≤1；
And obtaining the comprehensive evaluation result of the fuzzy comprehensive evaluation model according to the fuzzy relation matrix of the fuzzy comprehensive evaluation model.
3. A computer terminal device, comprising:
one or more processors;
a memory coupled to the processor for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the power distribution network energy conservation transformation multidimensional assessment method of claim 1.
4. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the power distribution network energy saving modification multidimensional assessment method according to claim 1.
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