CN103020458A - Method for judging energy consumption of electric network equipment based on whole life cycle energy consumption curve - Google Patents

Abstract

The invention relates to a method for determining energy consumption of power grid equipment based on a full life cycle energy consumption curve, which belongs to the technical field of power grid energy saving and emission reduction. All kinds of data of each equipment in the candidate scheme are used to calculate the energy consumption curve of the power grid equipment in the whole life cycle of each equipment, and the average value of energy consumption in the whole life cycle of each candidate scheme is further obtained. The average energy consumption of the cycle is judged, and the average energy consumption of the whole life cycle is used as the basis for selecting equipment. The invention can fully consider the energy consumption in the whole life cycle of the grid equipment, can clearly reflect the change of the energy consumption level of the equipment to be selected in the whole life cycle, and provide the basis for the equipment type selection with the goal of energy saving.

Description

A method for judging energy consumption of power grid equipment based on the energy consumption curve of the whole life cycle

technical field

The invention belongs to the technical field of power grid energy saving and emission reduction, and in particular relates to a method for determining energy consumption of power grid equipment considering energy consumption in the whole life cycle in power grid planning.

Background technique

Grid equipment is the basic component of the grid, so an important issue in the construction of the grid is how to select equipment so that the newly established grid or the updated grid can achieve the best results. At present, the general method of equipment selection is to consider the minimum total cost incurred in the investment and operation phases. With the full development of energy saving and emission reduction work, the energy consumption of equipment should also be judged in the selection of equipment. The level of equipment energy consumption determines the quality of the equipment selection scheme. Therefore, there is also a need for a grid equipment energy consumption determination method that considers the entire life cycle process of grid equipment to determine the energy consumption of grid equipment, starting from the selection stage to consider the grid equipment from production, installation, commissioning, operation, maintenance, The energy consumption of various life cycle links such as failure and scrapping, the power grid equipment selected according to this judgment principle can achieve a relatively small energy consumption of the entire life cycle.

The full life cycle theory considers all life cycle links of equipment (assets) from production, installation, commissioning, operation, maintenance, failure, scrapping, etc., and is a comprehensive and systematic analysis method.

At present, the Life Cycle Assets Management (LCM) given by the State Grid Corporation of China refers to "starting from the long-term economic benefits of the enterprise, through a series of technical and economic organizational measures, the planning, design, manufacturing, and purchase of equipment , Installation, commissioning, operation, maintenance, renovation, update and scrapping the whole process of comprehensive management, while ensuring the safety and efficiency of the power grid, control the cost of the whole process to minimize the life cycle cost. LCM Its core content is how to make and implement the most valuable enterprise asset use and maintenance decisions in a coordinated manner within the equipment life cycle."

The full life cycle theory has been applied to some extent in electric power enterprises, and its main application field is the full life cycle management of electric power enterprise assets. The full life cycle management of assets in the power industry focuses on the full life cycle cost (Life Cycle Cost, LCC) of assets. LCC can be expressed as

LCC＝CI+CO+CM+CF+CD

Among them, CI is the cost of investment (Cost of Investment), CO is the cost of operation (Cost of Operation), CM is the cost of maintenance (Cost of Maintenance), CF is the cost of failure (Cost of Failure), and CD is the cost of decommissioning (Cost of Failure). of Discard). The above-mentioned costs can also be broken down in more detail according to different types of equipment.

The main points of LCC theory are: through the unified management of technology and economy, quantitative data is used to make decisions, so as to achieve comprehensive planning, rational allocation, optimal purchase, correct use, careful maintenance, scientific maintenance, and timely transformation and update of equipment for constructing power grids. , so that the equipment is in a good technical state, and the minimum LCC is guaranteed from the two aspects of input and output.

At present, in the field of energy saving and emission reduction, full life cycle analysis is more used for the calculation and analysis of energy consumption and carbon emissions. At present, there are no relevant reports on the application of full life cycle energy consumption curves for grid equipment selection in various countries.

Contents of the invention

The purpose of the present invention is to propose a power grid equipment energy consumption judgment method based on the energy consumption curve of the whole life cycle in view of the problem of not focusing on energy consumption in the selection of traditional power equipment, and apply the energy consumption of the whole life cycle to Equipment selection and guidance for equipment selection can not only improve the efficiency of equipment selection, but also play an important role in energy saving and emission reduction of the power grid.

A method for judging energy consumption of power grid equipment based on the energy consumption curve of the whole life cycle proposed by the present invention is characterized in that the method is used to judge a variety of candidate schemes in constructing the power grid, and the method is based on the candidate schemes in constructing the power grid Calculate the energy consumption curve of the whole life cycle of power grid equipment for each type of equipment in various data, and further obtain the average value of energy consumption in the whole life cycle of each candidate scheme. The average value is judged, and the average value of energy consumption in the whole life cycle is used as the basis for selecting equipment.

Specifically, the method may include: assuming there are m plans to be selected, and each plan includes n _i identical devices, 1≤i≤m; the method includes the following steps:

1) Obtain all kinds of data of a device in option 1, including:

1.1) The planning data of the equipment includes:

The type and model of the equipment to be waited for, the planned operating time of the equipment N, in years, the annual operating time of the equipment t _O , the maximum load loss time of the equipment τ _max , and the equipment load rate β;

1.2) Equipment parameters include:

Equipment capacity S, equipment no-load loss ΔP ₀ , equipment load loss ΔP _k ;

1.3) Data related to the investment stage include:

生产1kg设备的第i部分所用到的材料耗费的能源

设备运输阶段公路运输里程L_Auto，设备运输阶段铁路运输里程L_Rail，设备运输阶段水运里程L_Water，设备运输阶段航空运输里程L_Air；The equipment investment stage includes the manufacturing process, transportation process and debugging process. The total time t _I of each process, the material and weight W _i of each component of the equipment, i=1,2,...,n, n is the weight of each component of the equipment Total, the total weight of the equipment W _All , namely

The energy consumed by the materials used to produce the i-th part of the 1kg device

Road transportation mileage L _Auto in equipment transportation stage, rail transportation mileage L _Rail in equipment transportation stage, water transportation mileage L _Water in equipment transportation stage, air transportation mileage L _Air in equipment transportation stage;

1.4) Relevant data at the scrapping stage include:

The time spent in the equipment scrapping stage t _D , the road transportation mileage L _DAuto in the equipment scrapping stage, the railway transportation mileage L _DRail in the equipment scrapping stage, the water transportation mileage L _DWater in the equipment scrapping stage, the air transportation mileage L _DAir in the equipment scrapping stage, the i-th landfill of 1kg equipment Energy consumed by some of the materials used

1.5) Comprehensive data includes:

The energy of 1kg standard coal is 29271kJ, the road freight coefficient k _Auto is 4396.14kJ/(tkm), the railway freight coefficient k _Rail is 280.51kJ/(t km), the water freight coefficient k _Water is 1101.13kJ/(t km), civil aviation The cargo coefficient k _Air is 20850.26kJ/(tkm), and the unit time length Δt ₁ of the energy consumption curve of the whole life cycle of the analysis equipment, the value range: 1 year or 1 month;

2) Generate a full life cycle energy consumption curve vector:

2.1) Generate the life cycle vector of the investment stage:

2.1.1) Generate the equipment weight column vector W, that is, W=[W ₁ W ₂ ...W _n ] ^T ;

2.1.2) Generate the manufacturing energy consumption coefficient column vector k _Make , $k_{\mathrm{make}}={\left[\begin{array}{cccc}{k}_{\mathrm{make}}^{\left(1\right)}& k_{\mathrm{make}}^{\left(2\right)}& ...& k_{\mathrm{make}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T$

2.1.3) According to the equipment weight column vector W and the manufacturing energy consumption coefficient column vector k _Make , the manufacturing energy consumption E _Make is obtained, ${\mathrm{E.}}_{\mathrm{make}}=k_{\mathrm{make}}^T\&Center\; Dot;W;$

2.1.4) Generate the transport mileage column vector L _Transport , L _Transport = [L _Auto L _Rail L _Water L _Air ] ^T ;

2.1.5) Generate the transport energy consumption coefficient column vector k _Transport , k _Transport = [k _Auto k _Rail k _Water k _Air ] ^T ;

2.1.6) According to the transportation mileage column vector L _Transport , the transportation energy consumption column vector and the total weight W _All of the equipment, the transportation energy consumption E _Transport of the equipment is obtained, ${\mathrm{E.}}_{\mathrm{Transport}}=(k_{\mathrm{Transport}}^T\·L_{\mathrm{Transport}})W_{\mathrm{all}}:$

2.1.7) According to the equipment manufacturing energy consumption E _Make and transportation energy consumption E _Transport , the investment energy consumption E _I is obtained, E _I = E _Make + E _Transport ;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}=\left[\begin{array}{cccc}{E}_I/t_I& E_I/t_I& ...& E_I/t_I\end{array}\right],$ 向量维度为t_I；2.1.8) According to the time spent in the equipment investment phase t _I and the investment energy consumption E _I , generate the life cycle vector of the investment phase

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_I/t_I& {\mathrm{E.}}_I/t_I& ...& {\mathrm{E.}}_I/t_I\end{array}\right],$ The vector dimension is t _I ;

2.2) Generate the life cycle vector of the running phase:

2.2.1) According to the formula A=ΔP ₀ t _O +β ² ΔP _k τ _max , the annual value of energy consumption for operation is calculated to obtain the annual value of energy consumption for equipment operation A;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}=\left[\begin{array}{cccc}\mathrm{\αA}& \mathrm{\αA}& ...& \mathrm{\αA}\end{array}\right],$ 若全生命周期能耗曲线的单位时段时间长度Δt₁取值为1年，则α＝1，向量维度为N；若全生命周期能耗曲线的单位时段时间长度Δt₁取值为1月，则向量维度为12N；2.2.2) According to the planned operation time N and the annual value A of equipment operation energy consumption, generate the life cycle vector of the operation stage

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(o\right)}=\left[\begin{array}{cccc}\mathrm{\αA}& \mathrm{\αA}& ...& \mathrm{\αA}\end{array}\right],$ If the unit time length Δt ₁ of the full life cycle energy consumption curve is 1 year, then α=1, and the vector dimension is N; if the unit time length Δt ₁ of the full life cycle energy consumption curve is 1 month, but The vector dimension is 12N;

2.3) Generate the life cycle vector of the scrapping phase:

2.3.1) Generate the column vector L _DTransport of the transportation mileage in the scrapping stage, L _DTransport = [L _DAuto L _DRail L _DWater L _DAir ] ^T ;

2.3.2) According to the column vector L _{DTranport of the transportation mileage in the scrapping stage,} the column vector k _Transport of the transportation energy consumption coefficient and the total weight of the equipment W _All , the scrapped transportation energy consumption E _DTransport of the transformer is obtained, ${\mathrm{E.}}_{\mathrm{DTransport}}=(k_{\mathrm{Transport}}^T\&Center\; Dot;L_{\mathrm{DTransport}})W_{\mathrm{all}}:$

2.3.3) Generate landfill energy consumption coefficient column vector k _Landfill , $k_{\mathrm{Landfill}}={\left[\begin{array}{cccc}{k}^{\mathrm{Landfill}}& k_{\mathrm{Landfill}}^{\left(2\right)}& ...& k_{\mathrm{Landfill}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T;$

2.3.4) According to the equipment weight column vector W and the landfill energy consumption coefficient column vector k _Landfill , the landfill energy consumption E _Landfill is obtained, ${\mathrm{E.}}_{\mathrm{Landfill}}=k_{\mathrm{Landfill}}^T\·W;$

2.3.5) According to the landfill energy consumption E _Landfill of the equipment and the waste transportation energy consumption E _DTransport , the waste energy consumption E _D is obtained, and E _D =E _Landfill + L _DTransport ;

2.3.6) According to the scrapped energy consumption E _D and the time t _D spent in the scrapped stage, generate the life cycle vector of the scrapped stage ${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(\mathrm{D.}\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& ...& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}\end{array}\right],$ The vector dimension is t _D ;

2.4) Generate the energy consumption curve of the whole life cycle:

运行阶段的生命周期向量

报废阶段的生命周期向量

生成全生命周期能耗曲线向量LCEC_Vector， ${\mathrm{LCEC}}_{\mathrm{Vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(D\right)}\end{array}\right];$ 2.4.1) Life cycle vector according to investment stage

Lifecycle vectors for run phases

Life cycle vectors for end-of-life phases

Generate the full life cycle energy consumption curve vector LCEC _Vector , ${\mathrm{LCEC}}_{\mathrm{Vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(o\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(\mathrm{D.}\right)}\end{array}\right];$

2.4.2) Draw the full life cycle energy consumption curve according to the full life cycle energy consumption curve vector LCEC _Vector ;

3) Judgment of energy consumption of the equipment to be selected:

3.1) According to the full life cycle energy consumption curve vector LCEC _Vector , the full life cycle energy consumption LCEC is obtained, $\mathrm{LCEC}=\underset{\mathrm{no}}{\mathrm{\Σ}}{\mathrm{LCEC}}_{\mathrm{vector}}\left(\mathrm{no}\right);$

$\stackrel{\‾}{\mathrm{LCEC}}=\frac{\mathrm{LCEC}}{N};$ 3.2) According to the energy consumption LCEC of the whole life cycle and the planned operation time N of the equipment, the average energy consumption of the whole life cycle of a piece of equipment in option 1 is obtained

$\stackrel{\‾}{\mathrm{LCEC}}=\frac{\mathrm{LCEC}}{N};$

计算得到方案1的全生命周期能耗均值

${\stackrel{\‾}{\mathrm{LCEC}}}_1=n_1\·\mathrm{LCEC};$ 3.3) According to option 1, the average value of energy consumption in the whole life cycle of a piece of equipment

The average value of energy consumption in the whole life cycle of Scheme 1 is calculated

${\stackrel{\‾}{\mathrm{LCEC}}}_1={\mathrm{no}}_1\·\mathrm{LCEC};$

k＝1,2,...,m；4) Repeat steps 1)-3) to obtain the average energy consumption of the whole life cycle of scheme k as

k=1,2,...,m;

将全生命周期能耗均值最小的方案作为选择设备的依据。5) Determine the mean value of energy consumption in the whole life cycle of each candidate scheme, and compare the mean value of energy consumption in the whole life cycle of the above m schemes

The scheme with the smallest average energy consumption in the whole life cycle is used as the basis for selecting equipment.

Technical characteristics of the present invention:

The judgment method proposed by the present invention is to calculate the energy consumption curve of the power grid equipment in the whole life cycle of the equipment according to the equipment parameters and planning data, and use this as a basis to judge the energy consumption of the equipment, and apply it to the selection of equipment; After the energy consumption curve of the whole life cycle, the average energy consumption of the whole life cycle of the equipment is calculated, and then the average energy consumption of the whole life cycle of the equipment is calculated. According to the average value of energy consumption in the whole life cycle of the equipment, the energy consumption performance of each equipment is judged.

Above feature makes the present invention have the following advantages:

Fully considering the energy consumption during the entire life cycle of the grid equipment, it provides a specific energy consumption determination method for the equipment selection with the goal of energy saving, which can not only improve the efficiency of equipment selection, but also improve the energy saving of the grid. Emission reduction plays an important role.

Description of drawings

Fig. 1 is a diagram of the energy consumption curve (month) of the whole life cycle of the power grid equipment of the present invention.

Detailed ways

A power grid equipment energy consumption determination method based on the full life cycle energy consumption curve proposed by the present invention is further described in conjunction with the accompanying drawings and embodiments as follows:

A method for judging energy consumption of power grid equipment based on the energy consumption curve of the whole life cycle of the present invention is characterized in that the method is used for judging a variety of candidate schemes in building a power grid, and the method is based on each of the candidate schemes in building a power grid. Calculate the energy consumption curve of the whole life cycle of the power grid equipment for each type of equipment, and further obtain the average energy consumption of the whole life cycle of each candidate scheme, and calculate the average energy consumption of the whole life cycle of each candidate scheme. Judgment, the size of the average energy consumption in the whole life cycle is used as the basis for selecting equipment.

This method specifically includes: assuming that there are m plans to be selected (the specific number is determined according to the actual situation), and each plan includes n _i (1≤i≤m) pieces of the same equipment; the method includes the following steps:

1) Obtain all kinds of data of a device in option 1, including:

1.1) The planning data of the equipment includes:

The type and model of the equipment to be waited for, the planned operating time of the equipment N (unit: year), the annual operating time of the equipment t _O , the maximum load loss time of the equipment τ _max , and the equipment load rate β;

1.2) Equipment parameters include:

Equipment capacity S (if the equipment has capacity), equipment no-load loss ΔP ₀ , equipment load loss ΔP _k ;

1.3) Data related to the investment stage include:

生产1kg设备的第i部分所用到的材料耗费的能源设备运输阶段公路运输里程L_Auto，设备运输阶段铁路运输里程L_Rail，设备运输阶段水运里程L_Water，设备运输阶段航空运输里程L_Air；The equipment investment stage includes the manufacturing process, transportation process and debugging process. The total time t _I of each process, the material and weight W _i of each component of the equipment, i=1,2,...,n, n is the weight of each component of the equipment Total, the total weight of the equipment W _All , namely

The energy consumed by the materials used to produce the i-th part of the 1kg device Road transportation mileage L _Auto in equipment transportation stage, rail transportation mileage L _Rail in equipment transportation stage, water transportation mileage L _Water in equipment transportation stage, air transportation mileage L _Air in equipment transportation stage;

1.4) Relevant data at the scrapping stage include:

The time spent in the equipment scrapping stage t _D , the road transportation mileage L _DAuto in the equipment scrapping stage, the railway transportation mileage L _DRail in the equipment scrapping stage, the water transportation mileage L _DWater in the equipment scrapping stage, the air transportation mileage L _DAir in the equipment scrapping stage, the i-th landfill of 1kg equipment Energy consumed by some of the materials used

1.5) Comprehensive data includes:

The energy of 1kg standard coal is 29271kJ, the road freight coefficient k _Auto is 4396.14kJ/(tkm), the railway freight coefficient k _Rail is 280.51kJ/(t km), the water freight coefficient k _Water is 1101.13kJ/(t km), civil aviation The cargo coefficient k _Air is 20850.26kJ/(tkm), and the unit time length Δt ₁ of the energy consumption curve of the whole life cycle of the analysis equipment, the value range: 1 year or 1 month;

2) Generate a full life cycle energy consumption curve vector:

2.1) Generate the life cycle vector of the investment stage:

2.1.1) Generate the equipment weight column vector W, that is, W=[W ₁ W ₂ ...W _n ] ^T ;

2.1.2) Generate the manufacturing energy consumption coefficient column vector k _Make , $k_{\mathrm{make}}={\left[\begin{array}{cccc}{k}_{\mathrm{make}}^{\left(1\right)}& k_{\mathrm{make}}^{\left(2\right)}& ...& k_{\mathrm{make}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T$

2.1.3) According to the equipment weight column vector W and the manufacturing energy consumption coefficient column vector k _Make , the manufacturing energy consumption E _Make is obtained, ${\mathrm{E.}}_{\mathrm{make}}=k_{\mathrm{make}}^T\&Center\; Dot;W;$

2.1.4) Generate the transport mileage column vector L _Transport , L _Transport = [L _Auto L _Rail L _Water L _Air ] ^T ;

2.1.5) Generate the transport energy consumption coefficient column vector k _Transport , k _Transport t=[k _Auto k _Rail k _Water k _Air ] ^T ;

2.1.6) According to the transportation mileage column vector L _Transport , the transportation energy consumption column vector and the total weight W _All of the equipment, the transportation energy consumption E _Transport of the equipment is obtained, ${\mathrm{E.}}_{\mathrm{Transport}}=(k_{\mathrm{Transport}}^T\·L_{\mathrm{Transport}})W_{\mathrm{all}}:$

2.1.7) According to the equipment manufacturing energy consumption E _Make and transportation energy consumption E _Transport , the investment energy consumption E _I is obtained, E _I = E _Make E _Transport ;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}=\left[\begin{array}{cccc}{E}_I/t_I& E_I/t_I& ...& E_I/t_I\end{array}\right],$ （向量维度为t_I）；2.1.8) According to the time spent in the equipment investment phase t _I and the investment energy consumption E _I , generate the life cycle vector of the investment phase

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_I/t_I& {\mathrm{E.}}_I/t_I& ...& {\mathrm{E.}}_I/t_I\end{array}\right],$ (vector dimension is t _I );

2.2) Generate the life cycle vector of the running phase:

2.2.1) According to the formula A=ΔP ₀ t _O +β ² ΔP _k τ _max , the annual value of energy consumption for operation is calculated to obtain the annual value of energy consumption for equipment operation A;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}=\left[\begin{array}{cccc}\mathrm{\αA}& \mathrm{\αA}& ...& \mathrm{\αA}\end{array}\right]$ （若全生命周期能耗曲线的单位时段时间长度Δt₁取值为年，则α＝1，向量维度为N；若全生命周期能耗曲线的单位时段时间长度Δt₁取值为月，则

向量维度为12N）；2.2.2) According to the planned operation time N and the annual value A of equipment operation energy consumption, generate the life cycle vector of the operation stage

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(o\right)}=\left[\begin{array}{cccc}\mathrm{\αA}& \mathrm{\αA}& ...& \mathrm{\αA}\end{array}\right]$ (If the unit time length Δt ₁ of the full life cycle energy consumption curve takes the value of years, then α=1, and the vector dimension is N; if the unit time length Δt ₁ of the full life cycle energy consumption curve takes the value of months, then

vector dimension is 12N);

2.3) Generate the life cycle vector of the scrapping phase:

2.3.1) Generate the column vector L _DTransport of the transportation mileage in the scrapping stage, L _DTransport = [L _DAuto L _DRail L _DWater L _DAir ] ^T ;

2.3.2) According to the transportation mileage column vector L _DTranport , the transportation energy consumption coefficient column vector k _Transport and the total equipment weight W _All in the scrapping stage, the scrapped transportation energy consumption E _DTransport of the transformer is obtained, ${\mathrm{E.}}_{\mathrm{DTransport}}=(k_{\mathrm{Transport}}^T\&Center\; Dot;L_{\mathrm{DTransport}})W_{\mathrm{all}};$

2.3.3) Generate landfill energy consumption coefficient column vector k _{, Landfill} $k_{\mathrm{Landfill}}={\left[\begin{array}{cccc}{k}^{\mathrm{Landfill}}& k_{\mathrm{Landfill}}^{\left(2\right)}& ...& k_{\mathrm{Landfill}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T;$

2.3.4) According to the equipment weight column vector W and the landfill energy consumption coefficient column vector k _Landfill , the landfill energy consumption E _Landfill is obtained, ${\mathrm{E.}}_{\mathrm{Landfill}}=k_{\mathrm{Landfill}}^T\&Center\; Dot;W;$

2.3.5) According to the landfill energy consumption E _Landfill of the equipment and the waste transportation energy consumption E _DTransport , the waste energy consumption E _D is obtained, and E _D =E _Landfill +E _DTransport ;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(D\right)}=\left[\begin{array}{cccc}{E}_D/t_D& E_D/t_D& ...& E_D/t_D\end{array}\right]$ （向量维度为t_D）；2.3.6) According to the scrapped energy consumption E _D and the time t _D spent in the scrapped stage, generate the life cycle vector of the scrapped stage

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(\mathrm{D.}\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& ...& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}\end{array}\right]$ (vector dimension is t _D );

2.4) Generate the energy consumption curve of the whole life cycle:

运行阶段的生命周期向量

报废阶段的生命周期向量

生成全生命周期能耗曲线向量LCEC_Vector， ${\mathrm{LCEC}}_{\mathrm{Vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(D\right)}\end{array}\right];$ 2.4.1) Life cycle vector according to investment stage

Lifecycle vectors for run phases

Life cycle vectors for end-of-life phases

Generate the full life cycle energy consumption curve vector LCEC _Vector , ${\mathrm{LCEC}}_{\mathrm{vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(o\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(\mathrm{D.}\right)}\end{array}\right];$

2.4.2) Draw the full life cycle energy consumption curve according to the full life cycle energy consumption curve vector LCEC _Vector ;

3) Judgment of energy consumption of the equipment to be selected:

3.1) According to the full life cycle energy consumption curve vector LCEC _Vector , the full life cycle energy consumption LCEC is obtained, $\mathrm{LCEC}=\underset{\mathrm{no}}{\mathrm{\Σ}}{\mathrm{LCEC}}_{\mathrm{vector}}\left(\mathrm{no}\right);$

$\stackrel{\‾}{\mathrm{LCEC}}=\frac{\mathrm{LCEC}}{N};$ 3.2) According to the energy consumption LCEC of the whole life cycle and the planned operation time N of the equipment, the average energy consumption of the whole life cycle of a piece of equipment in option 1 is obtained

$\stackrel{\‾}{\mathrm{LCEC}}=\frac{\mathrm{LCEC}}{N};$

3.3) According to option 1, the average value of energy consumption in the whole life cycle of a piece of equipment The average value of energy consumption in the whole life cycle of Scheme 1 is calculated ${\stackrel{\‾}{\mathrm{LCEC}}}_1={\mathrm{no}}_1\&Center\; Dot;\mathrm{LCEC};$

（k＝1,2,…,m）；4) Repeat steps 1)-3) to obtain the average energy consumption of the whole life cycle of scheme k as

(k=1,2,...,m);

将全生命周期能耗均值最小的方案（即节能水平最好的方案）作为选择设备的依据。5) Determine the mean value of energy consumption in the whole life cycle of each candidate scheme, and compare the mean value of energy consumption in the whole life cycle of the above m schemes

The scheme with the smallest average energy consumption in the whole life cycle (that is, the scheme with the best energy saving level) is taken as the basis for selecting equipment.

The specific embodiment of the method for determining the energy consumption of the power grid equipment is described in detail as follows in conjunction with the accompanying drawings:

Assume there are 2 options to be selected. Scheme 1 includes 2 SH11-M-400/10 transformers, and Scheme 2 includes 1 SH11-M-800/10 transformer. This embodiment specifically includes the following steps:

1) Obtain all kinds of data of a device in option 1, including:

1.1) The planning data of the equipment includes:

The type of power grid equipment to be analyzed is a transformer, the model is SH11-M-400/10, the planned running time N of the transformer is 20 years, the annual running time t _O of the transformer is 8760h, the maximum load loss time of the transformer τ _max is 5000h, and the transformer load Rate β is 0.95;

1.2) Equipment parameters include:

The transformer capacity S is 400MVA, the transformer no-load loss ΔP ₀ is 0.2kW, and the transformer load loss ΔP _k is 4.3kW;

1.3) Data related to the investment stage include:

The transformer investment stage includes the manufacturing process, transportation process and commissioning process. The total time t _I of each process is 4 months (calculated as 1 year when analyzing in units of years), the weight of the transformer magnet wire is 335.3kg, and the weight of the transformer amorphous alloy 716.0kg, the weight of transformer insulating oil is 315kg, the weight of transformer oil tank is 285kg, the weight of transformer insulating material is 53.7kg, the total weight of transformer is 1.705t, the energy consumed to produce 1kg transformer magnet wire is 1.634kg standard coal, and the energy consumed to produce 1kg transformer amorphous alloy or The energy consumed by the transformer oil tank is 0.313 kg standard coal, the energy consumed to produce 1 kg of transformer insulating oil is 0.313 kg standard coal, the energy consumed to produce 1 kg of transformer insulating material is 2.85 kg standard coal, and the road transportation mileage of transformer transportation stage L _Auto The railway transportation mileage L _Rail in the transformer transportation stage is 230km, the water transportation mileage L _Water in the transformer transportation stage is 0km, and the air transportation mileage L _Air in the transformer transportation stage is 0km;

1.4) Relevant data at the scrapping stage include:

The time t _D of the transformer scrapping stage is 1 month (calculated as 1 year when analyzing in units of years), the road transportation mileage L _DAuto of the transformer scrapping stage is 30km, the railway transportation mileage L _DRail of the transformer scrapping stage is 0km, and the transformer scrapping stage The water transportation mileage L _DWater is 0km, and the air transportation mileage L _DAir is 0km during the transformer scrapping stage. The energy consumed by burying 1kg transformer magnet wire, transformer amorphous alloy and transformer oil tank is 4.343×10 ^-3 kg standard coal, and burying 1kg transformer The energy consumed by oil is 29.11×10 ^-3 kg standard coal, and the energy consumed by burying 1 kg of transformer insulation material is 5.483×10 ^-3 kg standard coal;

1.5) Comprehensive data includes

The energy of 1kg standard coal is 29271kJ, the road freight coefficient k _Auto is 4396.14kJ/(tkm), the railway freight coefficient k _Rail is 280.51kJ/(t km), the water freight coefficient k _Water is 1101.13kJ/(t km), civil aviation The freight coefficient k _Air is 20850.26kJ/(t km), and the unit time length Δt ₁ for analyzing the energy consumption curve of the whole life cycle of the transformer is taken as months;

2) Generate a full life cycle energy consumption curve vector

2.1) Generate the life cycle vector of the investment stage:

2.1.1) Generate transformer weight column vector W, ie W=[335.3 716 315 285 53.7] ^T ;

2.1.2) Generate the manufacturing energy consumption coefficient column vector k _Make , k _Make ＝10 ⁴ ×[4.7829 0.9162 4.2619 0.9162 8.3422] ^T

2.1.3) According to the transformer weight column vector W and the manufacturing energy consumption coefficient column vector k _Make , the manufacturing energy consumption E _Make is obtained, which is 4.3113×10 ⁷ kJ;

2.1.4) Generate the transport mileage column vector L _Transport , L _Transport = [20 230 0 0] ^T ;

2.1.5) Generate the transport energy consumption coefficient column vector k _Transport , k _Transport = [4396.14 280.51 1101.13 20850.26] ^T ;

2.1.6) According to the transportation mileage column vector L _Transport , the transportation energy consumption column vector and the total transformer weight W _All , the transportation energy consumption E _Transport of the transformer is obtained, which is 2.5991×10 ⁵ kJ:

2.1.7) According to the manufacturing energy consumption E _Make and transportation energy consumption E _Transport of the transformer, the investment energy consumption E _I is obtained, which is 4.3373×10 ⁷ kJ;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}={10}^7\×\left[\begin{array}{cccc}1.0843& 1.0843& ...& 1.0843\end{array}\right]$ （向量维度为4）；2.1.8) According to the time spent in the investment stage of the transformer is t _I and the investment energy consumption E _I , generate the life cycle vector of the investment stage

${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(I\right)}={10}^7\×\left[\begin{array}{cccc}1.0843& 1.0843& ...& 1.0843\end{array}\right]$ (vector dimension is 4);

2.2) Generate the life cycle vector of the running phase

2.2.1) According to the formula A＝ΔP ₀ t _O +β ² ΔP _k τ _max , the annual value of the annual energy consumption of the transformer is calculated to be 7.6161×10 ⁷ kJ;

${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}={10}^6\×\left[\begin{array}{cccc}6.3467& 6.3467& ...& 6.3467\end{array}\right]$ （向量维度为240）；2.2.2) According to the planned operation time N and the annual value A of transformer operation energy consumption, generate the life cycle vector of the operation stage

${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(o\right)}={10}^6\×\left[\begin{array}{cccc}6.3467& 6.3467& ...& 6.3467\end{array}\right]$ (vector dimension is 240);

2.3) Generate the life cycle vector of the scrapping phase

2.3.1) Generate the column vector L _DTransport of the transportation mileage in the scrapping stage, L _DTransport = [30 0 0 0] ^T ;

2.3.2) According to the transport mileage column vector L _DTranport , the transport energy consumption coefficient column vector k _Transport and the total transformer weight W _All , the scrapped transport energy consumption E _DTransport of the transformer is obtained, which is 2.2486×10 ⁵ kJ;

2.3.3) Generate landfill energy consumption coefficient column vector k _Landfill , k _Landfill = 10 ⁵ ×[1.2712 1.2712 8.5208 1.2712 1.5918] ^T ;

2.3.4) According to the transformer weight column vector W and the landfill energy consumption coefficient column vector k _Landfill , the landfill energy consumption E _Landfill is obtained, which is 4.4683×10 ⁵ kJ;

2.3.5) According to the landfill energy consumption E _Landfill and scrap transportation energy consumption E _DTransport of the transformer, the scrap energy consumption E _D is obtained, which is 6.7169×10 ⁵ kJ;

2.3.6) According to the scrapped energy consumption E _D and the time t _D spent in the scrapped stage of the transformer, generate the life cycle vector of the scrapped stage ${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(\mathrm{D.}\right)}=6.7169\×{10}^5$ (vector dimension is 1);

2.4) Generate the energy consumption curve of the whole life cycle

运行阶段的生命周期向量报废阶段的生命周期向量

生成全生命周期能耗曲线向量LCEC_Vector， ${\mathrm{LCEC}}_{\mathrm{Vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(O\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(D\right)}\end{array}\right];$ 2.4.1) Life cycle vector according to investment stage

Lifecycle vectors for run phases Life cycle vectors for end-of-life phases

Generate the full life cycle energy consumption curve vector LCEC _Vector , ${\mathrm{LCEC}}_{\mathrm{Vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(o\right)}& {\mathrm{LCEC}}_{\mathrm{vector}}^{\left(\mathrm{D.}\right)}\end{array}\right];$

2.4.2) Draw the full life cycle energy consumption curve according to the full life cycle energy consumption curve vector LCEC _Vector , as shown in Figure 1, the horizontal axis is time, the unit is January, and the vertical axis is energy consumption, the unit is kJ. Figure 1 shows the energy consumption of equipment at any time during the entire life cycle;

3) Judgment on the energy consumption of the equipment to be selected

3.1) According to the full life cycle energy consumption curve vector LCEC _Vector , the full life cycle energy consumption LCEC is obtained, which is 1.5673×10 ⁹ kJ;

3.2) According to the energy consumption LCEC of the whole life cycle and the planned operation time N of the transformer, the average energy consumption of the whole life cycle of a piece of equipment in option 1 is obtained is 7.8363×10 ⁷ kJ;

计算得到方案1的全生命周期能耗均值

为1.5673×10⁸kJ；3.3) According to option 1, the average value of energy consumption in the whole life cycle of a piece of equipment

The average value of energy consumption in the whole life cycle of Scheme 1 is calculated

is 1.5673×10 ⁸ kJ;

4) Repeat steps 1)-3) to obtain the average life cycle energy consumption of Scheme 2 as 1.3876×10 ⁸ kJ;

（k＝1,2），将全生命周期能耗均值最小的方案2（即节能水平最好的方案）作为选择设备的依据。5) Judgment of the average value of energy consumption in the whole life cycle of scheme 1 and scheme 2, and compare the average value of energy consumption in the whole life cycle of the above two schemes

(k=1,2), the option 2 with the smallest average value of energy consumption in the whole life cycle (that is, the option with the best energy saving level) is used as the basis for selecting equipment.

Claims (2)

1. A method for judging energy consumption of power grid equipment based on a full life cycle energy consumption curve, characterized in that the method is used to determine multiple alternatives in the construction of the power grid, and the method is based on each of the alternatives in the construction of the power grid Calculate the energy consumption curve of the whole life cycle of the power grid equipment for each type of equipment, and further obtain the average energy consumption of the whole life cycle of each candidate scheme, and calculate the average energy consumption of the whole life cycle of each candidate scheme. Judgment, the size of the average energy consumption in the whole life cycle is used as the basis for selecting equipment. 2. The method according to claim 1, characterized in that, the method specifically comprises: assuming that there are m plans to be selected, and each plan includes n _i identical devices, 1≤i≤m; the method comprises the following steps: 1) Obtain all kinds of data of a device in option 1, including: 1.1) The planning data of the equipment includes: The type and model of the equipment to be waited for, the planned operating time of the equipment N, in years, the annual operating time of the equipment t _O , the maximum load loss time of the equipment τ _max , and the equipment load rate β; 1.2) Equipment parameters include: Equipment capacity S, equipment no-load loss ΔP ₀ , equipment load loss ΔP _k ; 1.3) Data related to the investment stage include: The equipment investment stage includes the manufacturing process, transportation process and debugging process. The total time t _I of each process, the material and weight W _i of each component of the equipment, i=1,2,...,n, n is the weight of each component of the equipment Total, the total weight of the equipment W _All , namely

The energy consumed by the materials used to produce the i-th part of the 1kg device Road transportation mileage L _Auto in equipment transportation stage, rail transportation mileage L _Rail in equipment transportation stage, water transportation mileage L _Water in equipment transportation stage, air transportation mileage L _Air in equipment transportation stage; 1.4) Relevant data at the scrapping stage include: The time spent in the equipment scrapping stage t _D , the road transportation mileage L _DAuto in the equipment scrapping stage, the railway transportation mileage L _DRail in the equipment scrapping stage, the water transportation mileage L _DWater in the equipment scrapping stage, the air transportation mileage L _DAir in the equipment scrapping stage, the i-th landfill of 1kg equipment Energy consumed by some of the materials used

1.5) Comprehensive data includes: The energy of 1kg standard coal is 29271kJ, the road freight coefficient k _Auto is 4396.14kJ/(tkm), the railway freight coefficient k _Rail is 280.51kJ/(t km), the water freight coefficient k _Water is 1101.13kJ/(t km), civil aviation The cargo coefficient k _Air is 20850.26kJ/(tkm), and the unit time length Δt ₁ of the energy consumption curve of the whole life cycle of the analysis equipment, the value range: 1 year or 1 month; 2) Generate a full life cycle energy consumption curve vector: 2.1) Generate the life cycle vector of the investment stage: 2.1.1) Generate the equipment weight column vector W, that is, W=[W ₁ W ₂ ...W _n ] ^T ; 2.1.2) Generate the manufacturing energy consumption coefficient column vector k _Make , $k_{\mathrm{make}}={\left[\begin{array}{cccc}{k}_{\mathrm{make}}^{\left(1\right)}& k_{\mathrm{make}}^{\left(2\right)}& ...& k_{\mathrm{make}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T$ 2.1.3) According to the equipment weight column vector W and the manufacturing energy consumption coefficient column vector k _Make , the manufacturing energy consumption E _Make is obtained, ${\mathrm{E.}}_{\mathrm{make}}=k_{\mathrm{make}}^T\&Center\; Dot;W;$ 2.1.4) Generate the transport mileage column vector L _Transport , L _Transport = [L _Auto L _Rail L _Warter L _Air ] ^T ; 2.1.5) Generate the transport energy consumption coefficient column vector k _Transport , k _Transport = [k _Auto k _Rail k _Water k _Air ] ^T ; 2.1.6) According to the transportation mileage column vector L _Transport , the transportation energy consumption column vector and the total weight W _All of the equipment, the transportation energy consumption E _Transport of the equipment is obtained, ${\mathrm{E.}}_{\mathrm{Transport}}=(k_{\mathrm{Transport}}^T\·L_{\mathrm{Transport}})W_{\mathrm{all}}:$ 2.1.7) According to the equipment manufacturing energy consumption E _Make and transportation energy consumption E _Transport , the investment energy consumption E _I is obtained, E _I = E _Make + E _Transport ; 2.1.8) According to the time spent in the equipment investment phase t _I and the investment energy consumption E _I , generate the life cycle vector of the investment phase

${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(I\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_I/t_I& {\mathrm{E.}}_I/t_I& ...& {\mathrm{E.}}_I/t_I\end{array}\right],$ The vector dimension is t _I ; 2.2) Generate the life cycle vector of the running phase: 2.2.1) According to the formula A=ΔP ₀ t _O +β ² ΔP _k τ _max , the annual value of energy consumption for operation is calculated to obtain the annual value of energy consumption for equipment operation A; 2.2.2) According to the planned operation time N and the annual value A of equipment operation energy consumption, generate the life cycle vector of the operation stage

${\mathrm{LCEC}}_{\mathrm{vector}}^{\left(o\right)}=\left[\begin{array}{cccc}\mathrm{\αA}& \mathrm{\αA}& ...& \mathrm{\αA}\end{array}\right],$ If the unit time length Δt ₁ of the full life cycle energy consumption curve is 1 year, then α=1, and the vector dimension is N; if the unit time length Δt ₁ of the full life cycle energy consumption curve is 1 month, but

The vector dimension is 12N; 2.3) Generate the life cycle vector of the scrapping phase: 2.3.1) Generate the column vector L _DTransport of the transportation mileage in the scrapping stage, L _DTransport = [L _DAuto L _DRail L _DWater L _DAir ] ^T ; 2.3.2) According to the column vector L _DTransport of the transportation mileage in the scrapping stage, the column vector k _Transport of the transportation energy consumption coefficient and the total weight W _All of the equipment, the scrapped transportation energy consumption E _DTransport of the transformer is obtained, ${\mathrm{E.}}_{\mathrm{DTransport}}=(k_{\mathrm{Transport}}^T\&Center\; Dot;L_{\mathrm{DTransport}})W_{\mathrm{all}}:$ 2.3.3) Generate landfill energy consumption coefficient column vector k, _Landfill $k_{\mathrm{Landfill}}={\left[\begin{array}{cccc}{k}^{\mathrm{Landfill}}& k_{\mathrm{Landfill}}^{\left(2\right)}& ...& k_{\mathrm{Landfill}}^{\left(\mathrm{no}\right)}\end{array}\right]}^T;$ 2.3.4) According to the equipment weight column vector W and the landfill energy consumption coefficient column vector k _Landfill , the landfill energy consumption E _Landfill is obtained,

2.3.5) According to the landfill energy consumption E _Landfill of the equipment and the waste transportation energy consumption E _DTransport , the waste energy consumption E _D is obtained, and E _D =E _Landfill +E _DTransport ; 2.3.6) According to the scrapped energy consumption E _D and the time t _D spent in the scrapped stage, generate the life cycle vector of the scrapped stage ${\mathrm{LCEC}}_{\mathrm{Vector}}^{\left(\mathrm{D.}\right)}=\left[\begin{array}{cccc}{\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}& ...& {\mathrm{E.}}_{\mathrm{D.}}/t_{\mathrm{D.}}\end{array}\right],$ The vector dimension is t _D ; 2.4) Generate the energy consumption curve of the whole life cycle: 2.4.1) Life cycle vector according to investment stage

Lifecycle vectors for run phases

Life cycle vectors for end-of-life phases

Generate the full life cycle energy consumption curve vector LCEC _Vector , ${\mathrm{LCEC}}_{\mathrm{vector}}=\left[\begin{array}{ccc}{\mathrm{LCEC}}_{\mathrm{vector}}^{\left(I\right)}& {\mathrm{LCEC}}_{\mathrm{vector}}^{\left(o\right)}& {\mathrm{LCEC}}_{\mathrm{vector}}^{\left(\mathrm{D.}\right)}\end{array}\right];$ 2.4.2) Draw the full life cycle energy consumption curve according to the full life cycle energy consumption curve vector LCEC _Vector ; 3) Judgment of energy consumption of the equipment to be selected: 3.1) According to the full life cycle energy consumption curve vector LCEC _Vector , the full life cycle energy consumption LCEC is obtained, $\mathrm{LCEC}=\underset{\mathrm{no}}{\mathrm{\Σ}}{\mathrm{LCEC}}_{\mathrm{vector}}\left(\mathrm{no}\right);$ 3.2) According to the energy consumption LCEC of the whole life cycle and the planned operation time N of the equipment, the average energy consumption of the whole life cycle of a piece of equipment in option 1 is obtained

$\stackrel{\‾}{\mathrm{LCEC}}=\frac{\mathrm{LCEC}}{N};$ 3.3) According to option 1, the average value of energy consumption in the whole life cycle of a piece of equipment

The average value of energy consumption in the whole life cycle of Scheme 1 is calculated

${\stackrel{\‾}{\mathrm{LCEC}}}_1={\mathrm{no}}_1\·\mathrm{LCEC};$ 4) Repeat steps 1)-3) to obtain the average energy consumption of the whole life cycle of scheme k as

k=1,2,...,m; 5) Determine the average value of energy consumption in the whole life cycle of each candidate scheme, and compare the whole life cycle of the above m schemes Average energy consumption

The scheme with the smallest average energy consumption in the whole life cycle is used as the basis for selecting equipment.

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