CN112529409B - Power grid multistage evaluation method and system based on power grid equipment traceability data - Google Patents
Power grid multistage evaluation method and system based on power grid equipment traceability data Download PDFInfo
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Abstract
The invention relates to a power grid multistage evaluation method and system based on power grid equipment traceability data, wherein the method comprises the following steps: s1, collecting actual operation data of power grid equipment of an evaluation object; s2, carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and the power grid development level according to the operation data of power grid equipment, wherein the power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation year and a heavy overload time; s3, carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more according to operation data of power grid equipment, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours; s4, weighting each evaluation index by adopting a subjective and objective weighting method, and comprehensively evaluating the operation level of the power grid; and S5, completing multi-stage evaluation of the power grid according to the position of the comprehensive evaluation result of the power grid operation in the drawn four-quadrant graph.
Description
Technical Field
The invention relates to a power grid multistage evaluation method and system based on power grid equipment traceability data, and relates to the technical field of power grid engineering.
Background
At present, 35 kilovolt and above power grid engineering and equipment are not communicated in a physical layer, operation data cannot be directly extracted from the equipment by calculation parameters of evaluation indexes of projects or areas, area power grid related data are generally selected, data are preprocessed and distributed to the projects or the equipment according to a certain rule according to an evaluation range, so that calculation results deviate from actual conditions to a certain extent, benefit efficiency conditions of the power grid and the equipment cannot be accurately reflected, deep problems of power grid investment cannot be deeply reflected, and objectivity, accuracy and pertinence of evaluation conclusion are insufficient, so that specific measures cannot be guided. Secondly, the current rectifying of the regional power grid investment scale basically only considers the efficiency benefit of the power grid, and the power grid development condition of the region where the equipment is located is not combined, so that investment deviation is easy to cause.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a multistage evaluation method and a multistage evaluation system which can accurately reflect the operation effect and the investment level of a power grid with the full voltage level of 35 kilovolts or more.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, the invention provides a power grid multistage evaluation method based on power grid equipment traceability data, which comprises the following steps:
s1, collecting actual operation data of power grid equipment of an evaluation object;
s2, carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and a power grid development level according to power grid equipment operation data, wherein power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation period and a heavy overload period index;
s3, carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more according to operation data of power grid equipment, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours;
s4, weighting each evaluation index by adopting a subjective and objective weighting method, and completing comprehensive evaluation of the operation level of the power grid;
and S5, completing multi-stage evaluation of the power grid according to the position of the comprehensive evaluation result of the power grid operation in the drawn four-quadrant graph.
Further, the specific process of the step S2 is as follows:
s21, calculating a capacity-to-load ratio, and evaluating and scoring the calculated capacity-to-load ratio;
S22, calculating the operation years and the line operation years index of the transformer to obtain the equipment operation years evaluation score;
s23, calculating a transformer heavy overload time length index and a line heavy overload time length index to obtain a heavy overload time length evaluation score.
Further, the specific process of the step S3 is as follows:
s31, calculating a transformer operation success index and a line operation success index to obtain an operation success evaluation score;
s32, calculating the equipment yield, and obtaining an equipment yield evaluation score;
s33, calculating the yield of the equipment, and obtaining an equipment yield evaluation score;
s34, calculating the equipment reaching the production age, and obtaining the evaluation score of the equipment reaching the production age;
s35, calculating average load rates of the transformer and the circuit, and obtaining an average load rate evaluation score;
s36, calculating the maximum load factor indexes of the transformer and the circuit, and obtaining a maximum load factor evaluation score;
and S37, calculating the maximum load utilization hour index of the transformer and the maximum load utilization hour of the line, and obtaining the maximum load utilization hour evaluation score.
Further, the specific process of the step S4 is as follows:
s41, 35 kv and above a certain voltage class comprehensive evaluation index=the voltage class grid development level index xf+the voltage class grid investment efficiency benefit index xg, f and g are grid development level index and investment efficiency benefit index weights, and f+g=1;
S42, calculating the weight of each index by adopting a subjective and objective weighting method, and weighting each index;
s43, comprehensively evaluating a voltage level of 35 kilovolts or more as follows:
grid operation level composite evaluation score for a certain voltage class = compliance with grid state of development x 0.3+ investment efficiency benefit x 0.7 = (capacity ratio evaluation score x 0.6+ operation year evaluation score x 0.3+ heavy overload duration evaluation score x 0.1) x 0.3+ (operation success evaluation score x 0.2+ up-to-date yield evaluation score x 0.1+ plant up-to-date yield evaluation score x 0.1+ average load factor evaluation score x 0.2+ maximum load utilization hour evaluation score x 0.1) x 0.7.
Further, the step S4 further includes a step S44, where the step S44 is to perform comprehensive evaluation on the 35kv and full-voltage-class power grid, where:
the 35KV and above full-voltage-class power grid carries out comprehensive evaluation index=35 kV power grid comprehensive evaluation index×1/5+110kV and/or 66kV power grid comprehensive evaluation index×1/5+220kV power grid comprehensive evaluation index×1/5+500kV and/or 330 kV) power grid comprehensive evaluation index×1/5+750kV power grid comprehensive evaluation index.
Further, the specific process of drawing the power grid operation comprehensive evaluation four-quadrant graph is as follows: drawing a four-quadrant graph by taking the investment efficiency benefit of a certain specific range and the adaptive average value of the power grid development level as reference points, wherein the abscissa is the investment efficiency benefit, and the ordinate is the power grid development level; and the horizontal axis datum point is used for selecting an overall investment efficiency benefit average value of the evaluation area, and the vertical axis datum point is used for selecting an overall power grid development level average value of the evaluation area.
Further, according to the position of the comprehensive evaluation result of the power grid operation in the four-quadrant graph, the specific contents for completing the multistage evaluation of the power grid are as follows:
the first quadrant is that the regional power grid has high development level and high investment efficiency benefit, the power grid planning is reasonable, the investment effect is obvious, and the later power grid planning and the investment plan need to be kept continuously;
the second quadrant is that the regional power grid has high development level but low investment efficiency benefit, the power grid planning is reasonable, the investment effect is relatively poor, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is properly reduced;
the third quadrant is that the regional power grid has low development level and low investment efficiency benefit, and the power grid planning is relatively unreasonable, the investment effect is relatively poor, and the later power grid planning and the investment planning need to be redeployed;
the fourth quadrant is that the area has high investment efficiency benefit but low power grid development level, the power grid planning is relatively unreasonable, the investment effect is obvious, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is properly added.
In a second aspect, the present invention further provides a power grid operation evaluation system based on power grid equipment traceability data, where the system includes:
The data acquisition module acquires actual operation data of the power grid equipment of the evaluation object;
the equipment evaluation module is used for carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and the power grid development level according to the power grid equipment operation data, wherein the power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation year and a heavy overload time; and carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more according to the operation data of the power grid equipment, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours;
the comprehensive evaluation module is used for giving weight to each evaluation index by adopting a subjective and objective weighting method and comprehensively evaluating the operation level of the power grid;
and carrying out multistage evaluation on the power grid, and completing the multistage evaluation on the power grid according to the position of the comprehensive evaluation result of the power grid operation in the drawn four-quadrant graph.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the invention provides a comprehensive evaluation method for the running levels of each voltage-class power grid and the full-voltage-class power grid from the two aspects of the investment efficiency benefit of the power grid and the adaptability of the development level of the local power grid, and solves the problem that the evaluation result often deviates from the actual development situation of the regional power grid;
2. All parameters required by index calculation provided by the invention are obtained by directly acquiring data in the running process of the equipment or by simply calculating by utilizing the directly acquired data, and the method has accurate results, traceability and easy evaluation operation;
3. according to the invention, evaluation indexes such as the equipment yield, the running success index and the like which can be directly calculated based on running data are provided, an index system with universal adaptability is initially established, an index score model is provided, and the problem that the equipment cannot be quantitatively evaluated is solved;
4. the four-quadrant graph analysis method for comprehensively evaluating the operation of the power grid provided by the invention can more intuitively display the efficiency benefit of the power grid equipment and obtain the investment scale rectifying direction;
5. according to the four-quadrant graph for comprehensively evaluating the power grid operation, the actual data of the power transmission and transformation project of each province at 110 (66) -750kV voltage level is selected by setting the datum point, so that the dynamic performance and traceability are achieved, and the accuracy of an evaluation conclusion is improved.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like parts are designated with like reference numerals throughout the drawings. In the drawings:
Fig. 1 is an index framework diagram of a power grid multistage evaluation method based on power grid equipment traceability data according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the evaluation results of example 1 of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, 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," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
The invention evaluates the operation efficiency benefits of the power grid engineering of 35 kilovolts and more from two dimensions of the power grid development level and the investment efficiency benefits, wherein the dimension of the power grid development level is set to reflect the investment and the operation expectancy of the engineering, and the dimension of the investment efficiency benefits is set to reflect the operation and the investment efficiency benefits of the engineering.
Example 1
As shown in fig. 1, the power grid multistage evaluation method based on the power grid equipment traceability data, which satisfies 35 kv and above power grid engineering and is provided by the embodiment, comprises the following contents:
1. and collecting actual operation data of the power grid equipment included in the evaluation object.
2. According to the collected actual operation data of the power grid equipment, carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and a power grid development level, wherein the power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation period and a heavy overload duration index, and the specific evaluation process is as follows:
2.1, calculating the capacity-load ratio
And the capacity-to-load ratio=the total capacity of certain voltage transformation equipment/the corresponding network power supply load, and evaluating and scoring the calculated capacity-to-load ratio index by a subjective and objective combined weighting method.
Wherein, the formula of the capacity-to-load ratio is as follows:
wherein, alpha is the capacitance-to-capacitance ratio of different voltage classes.
2.2, calculating and evaluating the operation years, including the operation years of the transformer and the operation years of the line, wherein the operation years of the equipment can be directly collected. Wherein the operational life evaluation score = transformer operational life index x 0.5+ line operational life x 0.5.
1) Calculating the running years index of the transformer, and counting the duty ratio conditions of the main transformer of less than 5, 5-10, 10-15, 15-20 and more than 20 years according to the voltage level, wherein the value formula is as follows:
f(β)＝20×a1+40×b1+60×c1+80×d1+100×e1
wherein, beta is the operation period of the transformers with different voltage levels, a1 is the main transformer operation period duty ratio which is more than or equal to 20 years, b1 is the main transformer operation period duty ratio which is 15-20 years, c1 is the main transformer operation period duty ratio which is 10-15 years, d1 is the main transformer operation period duty ratio which is 5-10 years, and e1 is the main transformer operation period duty ratio which is less than 5 years.
2) Calculating the running period index of the line, and counting the duty ratio conditions of the main transformer of less than 5, 5-10, 10-15, 15-20 and more than 20 years according to the voltage level, wherein the value formula is as follows:
f(γ)＝20×a2+40×b2+60×c2+80×d2+100×e2
wherein, gamma is the line operation period of different voltage levels, a2 is the line operation period duty ratio which is more than or equal to 20 years, b2 is the line operation period duty ratio which is 15-20 years, c2 is the line main transformer operation period duty ratio which is 10-15 years, d2 is the line operation period duty ratio which is 5-10 years, and e2 is the line operation period duty ratio which is less than 5 years.
2.3, calculating and evaluating heavy overload time length indexes including heavy overload time length of the transformer and heavy overload time length of the line, wherein the heavy overload time length of the equipment can be directly acquired. Wherein, the heavy overload duration evaluation score=transformer heavy overload duration index×0.5+line heavy overload duration index×0.5.
1) Calculating a transformer heavy overload time length index, and counting the duty ratio conditions that the heavy overload time length of the main transformer is equal to 0, 0-1, 1-5, 5-10 and more than 10h according to the voltage class, wherein the value formula is as follows:
f(δ)＝20×a3+40×b3+60×c3+80×d3+100×e3
delta is the transformer heavy overload time length of different voltage levels, a3 is the main transformer heavy overload time length duty ratio which is more than or equal to 10h, b3 is the main transformer heavy overload time length duty ratio which is 5-10 h, c3 is the main transformer heavy overload time length duty ratio which is 1-5 h, d3 is the main transformer heavy overload time length duty ratio which is 0-1 h, and e3 is the main transformer heavy overload time length duty ratio which is=0h.
2) Calculating a circuit heavy overload time length index, and counting the duty ratio condition that the heavy overload time length of the circuit is equal to 0, 0-1, 1-5, 5-10 and more than 10 hours according to the voltage level, wherein the value formula is as follows:
f(ε)＝20×a4+40×b4+60×c4+80×d4+100×e4
wherein epsilon is the line heavy overload time length of different voltage levels, a4 is the line heavy overload time length duty ratio which is more than or equal to 10h, b4 is the line heavy overload time length duty ratio which is 5-10 h, c4 is the line heavy overload time length duty ratio which is 1-5 h, d4 is the line heavy overload time length duty ratio which is 0-1 h, and e4 is the line heavy overload time length duty ratio which is=0h.
3. According to the collected equipment operation data, carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours, and specifically comprise:
and 3.1, calculating and evaluating the operation success rate to obtain an operation success rate evaluation score, wherein the operation success rate evaluation score=the transformer operation success rate score multiplied by 0.5+ line operation success rate score multiplied by 0.5.
1) Calculating the running effect index of the transformer
Transformer running achievement index = transformer maximum load factor arithmetic mean/50% x0.5 + transformer average load factor arithmetic mean/20% x0.5; in the method, the maximum load rate of the transformer and the average load rate of the transformer are direct collection data, and the evaluation score value formula of the operation effect of the transformer is as follows:
wherein z refers to the transformer operation success index.
2) Calculating a line operation success index
Line operation efficiency index = line maximum load rate arithmetic average value/50% ×0.5+ line average load rate arithmetic average value/20% ×0.5, wherein the line maximum load rate and the line average load rate are direct data, and the line operation efficiency index takes the value as follows:
Where w refers to the line operation success index.
3.2, calculating the yield of the equipment, wherein the yield of the equipment=the number of years of production/operation period, the number of years of production refers to the total number of years of production of the equipment, the unit is years, the maximum load rate is more than or equal to 50%, the average load rate is more than or equal to 20%, the operation period refers to the total number of years from the first year of the year with operation data to the evaluation year, the unit is years, and the evaluation result value is weighted by a subjective and objective combined weighting method, and the formula is:
wherein θ is the arithmetic mean of the productivities of the devices of different voltage classes.
3.3, calculating and evaluating the yield of the equipment, wherein the yield of the equipment=the number of the equipment to be produced/the total number of the equipment, and the evaluation result value is weighted by a subjective and objective combined weighting method, and the formula is as follows:
where iota is the yield achieved for devices of different voltage classes.
3.4, calculating and evaluating the estimated value of the equipment contained in each voltage class, if the estimated value is rounded off by decimal, the estimated value is weighted by a subjective and objective combined weighting method, and the formula is as follows:
wherein, kappa is the year of production of different voltage classes.
And 3.5, calculating and evaluating the average load rate. The average load rate evaluation score=the average load rate index of the transformer×0.5+the average load rate index of the line×0.5, and the average load rate of the device can be directly acquired.
1) Calculating an average load factor index of a transformer
And counting the main transformer duty ratio of each voltage class according to the distribution conditions of 0-10%, 10-20%, 20-30%, 30-40%, 40% and above. The index calculation formula is:
f(λ)＝20*a5+40*b5+60*c5+80*d5+100*e5
wherein lambda is the average load rate of transformers with different voltage levels, a5 is the duty ratio of 0-10% of main leveling average load rate, b5 is the duty ratio of 10-20% of main leveling average load rate, c5 is the duty ratio of 20-30% of main leveling average load rate, d5 is the duty ratio of 30-40% of main leveling average load rate, and e5 is the duty ratio of more than or equal to 40% of main leveling average load rate.
2) Calculating an average load factor index of a circuit
The average load rate of each voltage class line is counted according to the distribution conditions of 0-10%, 10-20%, 20-30%, 30-40%, 40% and above, and the index calculation formula is as follows:
f(μ)＝20*a6+40*b6+60*c6+80*d6+100*e6
wherein mu is the average load rate of the lines with different voltage levels, a6 is the average load rate of the lines with 0-10%, b6 is the average load rate of the lines with 10-20%, c6 is the average load rate of the lines with 20-30%, d6 is the average load rate of the lines with 30-40%, and e6 is the average load rate of the lines with the value equal to or greater than 40%.
And 3.6, calculating and evaluating the maximum load rate, wherein the maximum load rate evaluation score=the maximum load rate index of the transformer multiplied by 0.5+the maximum load rate index of the line multiplied by 0.5, and the maximum load rate of the equipment can be directly acquired.
1) Calculating the maximum load factor index of the transformer, and counting the main transformer duty ratio according to the distribution conditions of less than 20%, 20% -40%, 40% -60%, 60% -80%, 80% and above of the main transformer maximum load factor of each voltage level. The index calculation formula is:
f(v)＝20*a7+40*b7+60*c7+80*d7+100*e7
wherein v is the maximum load rate of the transformers with different voltage levels, a7 is less than 20% of the maximum load rate of the main transformer, b7 is 20-40% of the maximum load rate of the main transformer, c7 is 60-80% of the maximum load rate of the main transformer, d7 is 40-60% of the maximum load rate of the main transformer, and e7 is more than or equal to 80% of the maximum load rate of the main transformer.
2) Calculating a maximum load factor index of the circuit, counting the line proportion conditions according to the distribution conditions of less than 20%, 20% -40%, 40% -60%, 60% -80%, 80% and above of the maximum load factor of the circuit of each voltage class, wherein an index calculation formula is as follows:
f(ξ)＝20*a8+40*b8+60*c8+80*d8+100*e8
wherein, xi is the maximum load rate of the lines with different voltage levels, a8 is less than 20% of the maximum load rate of the lines, b8 is 20-40% of the maximum load rate of the lines, c8 is 60-80% of the maximum load rate of the lines, d8 is 40-60% of the maximum load rate of the lines, and e8 is more than or equal to 80% of the maximum load rate of the lines.
3.7, calculating and evaluating the maximum load utilization hours. Wherein the maximum load utilization hours evaluation score = transformer maximum load utilization hours index x 0.5+ line maximum load utilization hours index x 0.5.
1) And calculating the maximum load utilization hour index of the transformer.
First, the number of main transformer maximum load utilization hours is calculated, the number of transformer maximum load utilization hours=main transformer quantity/main transformer maximum load, and the main transformer maximum utilization hours of each voltage class are counted according to the distribution conditions of less than 1000, 1000-2500, 2500-4000, 4000-5500, 5500h and above. The index calculation formula is:
f(π)＝20*a9+40*b9+60*c9+80*d9+100*e9
wherein pi is the maximum load utilization hours of the transformers with different voltage levels, a9 is the maximum utilization hours of the main transformer less than 1000h, b9 is the maximum utilization hours of the main transformer from 1000h to 2500h, c9 is the maximum utilization hours of the main transformer from 2500h to 4000h, d9 is the maximum utilization hours of the main transformer from 4000h to 5500h, and e9 is the maximum utilization hours of the main transformer more than or equal to 5500 h.
2) The line maximum load utilization hours index is calculated.
First, the line maximum load utilization hours are calculated, line maximum load utilization hours=line power/line maximum load. And counting the maximum utilization hours of each voltage class line according to the distribution conditions of less than 1000, 1000-2500, 2500-4000, 4000-5500, 5500h and above. The index calculation formula is:
f(ρ)＝20*a10+40*b10+60*c10+80*d10+100*e10
Wherein ρ is the utilization hours of the maximum load of the lines with different voltage levels, a10 is the utilization hours of the line with the maximum load of less than 1000h, b10 is the utilization hours of the line with the maximum load of 1000-2500 h, c10 is the utilization hours of the line with the maximum load of 2500-4000 h, d10 is the utilization hours of the line with the maximum load of 4000-5500 h, and e10 is the utilization hours of the line with the maximum load of more than or equal to 5500 h.
4. And (3) adopting a subjective and objective weighting method, weighting each index by utilizing MATLAB based on basic data of power transmission and transformation engineering of 110 (66) -750kV voltage class of each province, wherein the weighting result is as follows:
TABLE 1 Power grid layer weighting results
5. For comprehensive evaluation of a certain voltage level of 35 kilovolts and above, the calculation formula is as follows:
35/110 (66)/220/500 (330)/750 kV power grid operation level comprehensive evaluation score
=fitness to grid development level×0.3+investment efficiency benefit×0.7
= (capacity ratio evaluation score x 0.6+ running years evaluation score x 0.3)
+heavy overload time length evaluation score×0.1) ×0.3
++ (running outcome evaluation score X0.2+ yield evaluation score X0.1)
+ equipment yield score x 0.1+ year score x 0.1
+average load factor evaluation score×0.2+maximum load factor evaluation score×0.2
+maximum load utilization hours evaluation score×0.1) ×0.7
6. The comprehensive evaluation of the power grid with the full voltage level of 35 kilovolts and above is carried out, and the calculation formula is as follows:
7. and drawing a four-quadrant graph for comprehensive evaluation of power grid operation.
And drawing a four-quadrant graph by taking the equipment investment efficiency benefit and the adaptive average value of the power grid development level within a certain specific range as reference points, wherein the abscissa is the investment efficiency benefit, the ordinate is the power grid development level, the abscissa is the overall investment efficiency benefit average value of the evaluation area is selected by the reference points of the abscissa, and the overall power grid development level average value of the evaluation area is selected by the reference points of the ordinate.
Specifically, the first quadrant refers to that the voltage level or regional power grid is high in development level and high in investment efficiency benefit, the power grid planning is reasonable, the investment effect is obvious, and later power grid planning and investment planning need to be kept continuously;
the second quadrant refers to that the voltage level or the regional power grid is high in development level but low in investment efficiency benefit, and the power grid planning is reasonable, the investment effect is relatively poor, and the later power grid planning and the investment planning are required to be coordinated and matched;
the third quadrant refers to low voltage level or regional power grid development level and low investment efficiency benefit, and the fact that power grid planning is relatively unreasonable and investment effect is relatively poor is indicated, and later power grid planning and investment planning need to be deployed again;
The fourth quadrant refers to that the voltage class or the area has high investment efficiency benefit but low power grid development level, so that the power grid planning is relatively unreasonable, the investment effect is obvious, and the later power grid planning and the investment planning need to be coordinated and matched.
8. And comparing the power grid development level adaptability score and the investment efficiency benefit score of the evaluation object with the reference point of the power grid operation comprehensive evaluation four-quadrant graph, determining the position of the evaluation object in the four-quadrant graph, and evaluating the operation level of the evaluation object.
Example 2
The embodiment 1 provides a method for multi-stage evaluation of a power grid based on traceability data of power grid equipment, and correspondingly, the embodiment also provides a system for multi-stage evaluation of the power grid based on traceability data of the power grid equipment.
The system for multi-stage evaluation of the power grid based on the power grid equipment tracing data provided by the embodiment can implement the method for multi-stage evaluation of the power grid based on the power grid equipment tracing data of embodiment 1, and the system for multi-stage evaluation of the power grid based on the power grid equipment tracing data can be realized in a mode of software, hardware or combination of software and hardware. For example, the system for grid multi-level evaluation based on grid plant traceability data may include integrated or separate functional modules or functional units to perform the corresponding steps in the methods of embodiment 1. Since the system for multi-stage evaluation of the power grid based on the tracing data of the power grid equipment in this embodiment is basically similar to the method embodiment, the description process of this embodiment is relatively simple, and the relevant points may be referred to in the partial description of embodiment 1, and the embodiment of the system for multi-stage evaluation of the power grid based on the tracing data of the power grid equipment in this embodiment is merely illustrative.
The embodiment provides a multistage evaluation system of electric wire netting based on electric wire netting equipment traceability data, and this system includes:
the data acquisition module acquires actual operation data of the power grid equipment of the evaluation object;
the equipment evaluation module is used for carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and the power grid development level according to the power grid equipment operation data, wherein the power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation year and a heavy overload time; and carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more according to the operation data of the power grid equipment, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours;
the comprehensive evaluation module is used for giving weight to each evaluation index by adopting a subjective and objective weighting method and comprehensively evaluating the operation level of the power grid;
and carrying out multistage evaluation on the power grid, and completing the multistage evaluation on the power grid according to the position of the comprehensive evaluation result of the power grid operation in the drawn four-quadrant graph.
It is noted that the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims. The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be as defined in the claims.
Claims (2)
1. The utility model provides a multistage evaluation method of electric wire netting based on electric wire netting equipment traceability data, which is characterized by comprising the following contents:
s1, collecting actual operation data of power grid equipment of an evaluation object;
s2, carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and a power grid development level according to power grid equipment operation data, wherein power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation period and a heavy overload duration index:
s21, calculating the capacity-to-load ratio, and evaluating the calculated capacity-to-load ratio to obtain a score, wherein the formula is as follows:
；
wherein,the capacity-to-load ratio is different in voltage class;
s22, calculating the operation years and the line operation years indexes of the transformer to obtain the equipment operation years evaluation score, wherein the operation years evaluation score=the operation years indexes of the transformer multiplied by 0.5+the line operation years multiplied by 0.5:
s221, calculating a transformer operation life index to obtain a transformer operation life evaluation score, wherein the formula is as follows:
；
wherein,for the operation years of transformers with different voltage levels, a1 is the main transformer operation years duty ratio which is more than or equal to 20 years, b1 is the main transformer operation years duty ratio which is 15-20 years, c1 is the main transformer operation years duty ratio which is 10-15 years, d1 is the main transformer operation years duty ratio which is 5-10 years, e1 is the main transformer operation years duty ratio which is less than 5 years;
S222, calculating a line operation age index to obtain a line operation age evaluation score, wherein the formula is as follows:
；
wherein,for the line operation years of different voltage levels, a2 is the line operation years duty ratio which is more than or equal to 20 years, b2 is the line operation years duty ratio which is 15-20 years, c2 is the line main transformer operation years duty ratio which is 10-15 years, d2 is the line operation years duty ratio which is 5-10 years, e2 is the line operation years duty ratio which is less than 5 years;
s23, calculating a transformer heavy overload time length index and a line heavy overload time length index, and obtaining a heavy overload time length evaluation score, wherein the heavy overload time length evaluation score=the transformer heavy overload time length index multiplied by 0.5+the line heavy overload time length index multiplied by 0.5:
s231, calculating a transformer heavy overload time length index to obtain a transformer heavy overload time length evaluation score, wherein the formula is as follows:
；
wherein,for the transformer heavy overload time length of different voltage classes, a3 is equal to or more than 10h main transformer heavy overload time length duty ratio, b3 is 5-10 h main transformer heavy overload time length duty ratio, c3 is 1-5 h main transformer heavy overload time length duty ratio, d3 is 0 to the wholeThe 1h main transformer weight overload time length duty ratio, and e3 is=0h main transformer weight overload time length duty ratio;
s232, calculating a circuit heavy overload time length index to obtain a circuit heavy overload time length evaluation score, wherein the formula is as follows:
；
Wherein,for the line heavy overload time length of different voltage levels, a4 is equal to or more than 10h line heavy overload time length duty ratio, b4 is 5-10 h line heavy overload time length duty ratio, c4 is 1-5 h line heavy overload time length duty ratio, d4 is 0-1 h line heavy overload time length duty ratio, and e4 is=0h line heavy overload time length duty ratio;
s3, carrying out investment efficiency benefit evaluation on a voltage level of 35 kilovolts or more according to operation data of power grid equipment, wherein the investment efficiency benefit evaluation indexes comprise operation success rate, yield, production year, average load rate, maximum load rate and maximum load utilization hours:
s31, calculating a transformer operation achievement index and a line operation achievement index to obtain an operation achievement evaluation score, wherein the operation achievement evaluation score=the transformer operation achievement score multiplied by 0.5+ line operation achievement score multiplied by 0.5:
s311, calculating a transformer operation success index to obtain an operation success evaluation score, wherein the transformer operation success index=the calculated average value of the maximum load rate of the transformer/50% x 0.5+the calculated average value of the average load rate of the transformer/20% x 0.5, and the formula is as follows:
；
wherein z refers to the operational efficiency index of the transformer;
s312, calculating a line operation success index to obtain a line operation success evaluation score, wherein the line operation success index=a line maximum load rate arithmetic average value/50%. Times.0.5+a line average load rate arithmetic average value/20%. Times.0.5, and the formula is as follows:
；
Wherein,the line operation achievement index is indicated;
s32, calculating the equipment yield, and obtaining an equipment yield evaluation score, wherein the equipment yield = the number of years of yield/the operation period, the number of years of yield refers to the total number of years of equipment yield, the unit is years, the yield standard is the maximum load rate which is more than or equal to 50%, the average load rate is more than or equal to 20%, and the formula is as follows:
；
wherein,obtaining arithmetic average value of productivity for equipment with different voltage levels;
s33, calculating the yield of the equipment, and obtaining an equipment yield evaluation score, wherein the equipment yield=the number of the equipment/the total number of the equipment, and the formula is as follows:
；
wherein,yield is achieved for devices of different voltage classes;
s34, calculating the equipment reaching the production age, and obtaining the evaluation score of the equipment reaching the production age, wherein the formula is as follows:
；
wherein,the production years of different voltage classes are reached;
s35, calculating average load rates of the transformer and the line, and obtaining an average load rate evaluation score, where the average load rate evaluation score=average load rate index of the transformer×0.5+average load rate index of the line×0.5:
s351, calculating an average load factor index of the transformer to obtain an average load factor evaluation score of the transformer, wherein the formula is as follows:
；
wherein,for the average load ratios of the transformers with different voltage levels, a5 is 0-10% of main leveling average load ratio, b5 is 10-20% of main leveling average load ratio, c5 is 20-30% of main leveling average load ratio, d5 is 30-40% of main leveling average load ratio, and e5 is more than or equal to 40% of main leveling average load ratio;
S352, calculating a line average load factor index to obtain a line average load factor evaluation score, wherein the formula is as follows:
；
wherein,for the line average load rates of different voltage levels, a6 is the line average load rate duty ratio of 0-10%, b6 is the line average load rate duty ratio of 10-20%, c6 is the line average load rate duty ratio of 20-30%, d6 is the line average load rate duty ratio of 30-40%, and e6 is the line average load rate duty ratio of not less than 40%;
s36, calculating the maximum load factor indexes of the transformer and the line, and obtaining a maximum load factor evaluation score, where the maximum load factor evaluation score=the maximum load factor index of the transformer×0.5+the maximum load factor index of the line×0.5:
s361, calculating a maximum load factor index of the transformer to obtain a maximum load factor evaluation score of the transformer, wherein the formula is as follows:
；
wherein,for the maximum load rates of the transformers with different voltage levels, a7 is the maximum load rate of the main transformer less than 20%, b7 is the maximum load rate of the main transformer between 20 and 40%, c7 is the maximum load rate of the main transformer between 60 and 80%, d7 is the maximum load rate of the main transformer between 40 and 60%, and e7 is the maximum load rate of the main transformer more than or equal to 80%;
s362, calculating a maximum load factor index of the line to obtain a maximum load factor evaluation score of the line, wherein the formula is as follows:
；
Wherein,for the maximum load rates of the lines with different voltage levels, a8 is the maximum load rate of the line less than 20%, b8 is the maximum load rate of the line between 20 and 40%, c8 is the maximum load rate of the line between 60 and 80%, d8 is the maximum load rate of the line between 40 and 60%, and e8 is the maximum load rate of the line more than or equal to 80%;
s37, calculating a maximum load utilization hour index of the transformer and a maximum load utilization hour index of the line, and obtaining a maximum load utilization hour evaluation score, wherein the maximum load utilization hour evaluation score=the maximum load utilization hour index of the transformer multiplied by 0.5+the maximum load utilization hour index of the line multiplied by 0.5:
s371, calculating a maximum load utilization hour index of the transformer to obtain a maximum load utilization hour evaluation score of the transformer, wherein the formula is as follows:
；
wherein,for the maximum load utilization hours of the transformers with different voltage levels, a9 is less than 1000h main transformer maximum utilization hours, b9 is 1000-2500 h main transformer maximum utilization hours, c9 is 2500-4000 h main transformer maximum utilization hours, d9 is 4000-5500 h main transformer maximum utilization hours, e9 is more than or equal to 5500h main transformer maximum utilization hours;
s372, calculating a line maximum load utilization hour index to obtain a line maximum load utilization hour evaluation score, wherein the formula is as follows:
；
Wherein,for the utilization hours of the maximum load of the lines with different voltage levels, a10 is less than 1000h of the utilization hours of the maximum line, b10 is 1000-2500 h of the utilization hours of the maximum line, c10 is 2500-4000 h of the utilization hours of the maximum line, d10 is 4000-5500 h of the utilization hours of the maximum line, and e10 is more than or equal to 5500h of the utilization hours of the maximum line;
s4, adopting a subjective and objective weighting method to weight each evaluation index by utilizing MATLAB based on power transmission and transformation project basic data of 35-750kV voltage class of each province, and completing comprehensive evaluation of the power transmission and transformation project basic data:
s41, 35 kv and above a certain voltage class comprehensive evaluation index=the voltage class grid development level index xf+the voltage class grid investment efficiency benefit index xg, f and g are grid development level index and investment efficiency benefit index weights, and f+g=1;
s42, calculating the weight of each index by adopting a subjective and objective weighting method, and weighting each index;
s43, comprehensively evaluating a voltage level of 35 kilovolts or more as follows: grid operation level composite evaluation score=grid development level adaptability×0.3+investment efficiency benefit×0.7= (capacity ratio evaluation score×0.6+operation year evaluation score×0.3+heavy overload duration evaluation score×0.1) ×0.3+ (operation success evaluation score×0.2+up-to-date yield evaluation score×0.1+plant up-to-date yield evaluation score×0.1+up-to-date year evaluation score×0.1+average load factor evaluation score×0.2+maximum load utilization hour evaluation score×0.1) ×0.7;
S44, comprehensively evaluating the 35 kilovolt and full-voltage-class power grid: the comprehensive evaluation index of the 35kV and above full-voltage-class power grid is equal to or greater than 35kV power grid comprehensive evaluation index multiplied by 1/5+110 kV and/or 66kV power grid comprehensive evaluation index multiplied by 1/5+220kV power grid comprehensive evaluation index multiplied by 1/5+500 kV and/or 330kV power grid comprehensive evaluation index multiplied by 1/5+750kV power grid comprehensive evaluation index multiplied by 1/5;
s5, completing multi-stage evaluation of the power grid according to the position of the comprehensive evaluation result of the power grid operation in the drawn four-quadrant graph, wherein: the first quadrant is that the regional power grid has high development level and high investment efficiency benefit, the power grid planning is reasonable, the investment effect is obvious, and the later power grid planning and the investment plan need to be kept continuously; the second quadrant is that the regional power grid has high development level but low investment efficiency benefit, the power grid planning is reasonable, the investment effect is poor, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is reduced; the third quadrant is that the regional power grid has low development level and low investment efficiency benefit, which means that the power grid planning is unreasonable, the investment effect is poor, and the later power grid planning and the investment planning need to be redeployed; the fourth quadrant is that the area has high investment efficiency benefit but low power grid development level, the power grid planning is unreasonable, the investment effect is obvious, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is added; the specific process for drawing the power grid operation comprehensive evaluation four-quadrant graph comprises the following steps: drawing a four-quadrant graph by taking the investment efficiency benefit of a certain specific range and the adaptive average value of the power grid development level as reference points, wherein the abscissa is the investment efficiency benefit, and the ordinate is the power grid development level; and the horizontal axis datum point is used for selecting an overall investment efficiency benefit average value of the evaluation area, and the vertical axis datum point is used for selecting an overall power grid development level average value of the evaluation area.
2. A power grid operation evaluation system based on power grid equipment traceability data is characterized in that the system comprises:
the data acquisition module acquires actual operation data of the power grid equipment of the evaluation object;
the equipment evaluation module is used for carrying out adaptability evaluation on a voltage level of 35 kilovolts or more and a power grid development level according to power grid equipment operation data, and carrying out investment efficiency benefit evaluation on the voltage level of 35 kilovolts or more according to the power grid equipment operation data, wherein the power grid development level evaluation indexes comprise a capacity-to-load ratio, an operation age and a heavy overload duration; the investment efficiency benefit evaluation indexes comprise operation results, up-to-date yield of equipment, up-to-date production years, average load rate, maximum load rate and maximum load utilization hours:
calculating the capacity-to-load ratio, and evaluating the calculated capacity-to-load ratio to obtain a score, wherein the formula is as follows:
；
wherein,the capacity-to-load ratio is different in voltage class;
calculating the operation years and the line operation years indexes of the transformer to obtain the evaluation score of the operation years of the equipment, wherein the evaluation score of the operation years=the operation years indexes of the transformer multiplied by 0.5+the operation years of the line multiplied by 0.5:
calculating the running life index of the transformer to obtain the running life evaluation score of the transformer, wherein the formula is as follows:
；
Wherein,for the operation years of transformers with different voltage levels, a1 is the main transformer operation years duty ratio which is more than or equal to 20 years, b1 is the main transformer operation years duty ratio which is 15-20 years, c1 is the main transformer operation years duty ratio which is 10-15 years, d1 is the main transformer operation years duty ratio which is 5-10 years, e1 is the main transformer operation years duty ratio which is less than 5 years;
calculating a line operation age index to obtain a line operation age evaluation score, wherein the formula is as follows:
；
wherein,for the line operation years of different voltage levels, a2 is the line operation years duty ratio which is more than or equal to 20 years, b2 is the line operation years duty ratio which is 15-20 years, c2 is the line main transformer operation years duty ratio which is 10-15 years, d2 is the line operation years duty ratio which is 5-10 years, e2 is the line operation years duty ratio which is less than 5 years;
calculating a transformer heavy overload time length index and a line heavy overload time length index, and obtaining a heavy overload time length evaluation score, wherein the heavy overload time length evaluation score=the transformer heavy overload time length index multiplied by 0.5+the line heavy overload time length index multiplied by 0.5:
calculating a transformer heavy overload time length index to obtain a transformer heavy overload time length evaluation score, wherein the formula is as follows:
；
wherein,for the transformer heavy overload time length of different voltage levels, a3 is equal to or more than 10h main transformer heavy overload time length duty ratio, b3 is 5-10 h main transformer heavy overload time length duty ratio, c3 is 1-5 h main transformer heavy overload time length duty ratio, d 3 is the duty ratio of the main transformer weight overload time length of 0-1 h, and e3 is the duty ratio of the main transformer weight overload time length of = 0 h;
calculating a circuit heavy overload time length index to obtain a circuit heavy overload time length evaluation score, wherein the formula is as follows:
；
wherein,for the line heavy overload time length of different voltage levels, a4 is equal to or more than 10h line heavy overload time length duty ratio, b4 is 5-10 h line heavy overload time length duty ratio, c4 is 1-5 h line heavy overload time length duty ratio, d4 is 0-1 h line heavy overload time length duty ratio, and e4 is=0h line heavy overload time length duty ratio;
calculating a transformer operation achievement index and a line operation achievement index to obtain an operation achievement evaluation score, wherein the operation achievement evaluation score=the transformer operation achievement score×0.5+the line operation achievement score×0.5:
calculating a transformer operation success index to obtain an operation success evaluation score, wherein the transformer operation success index=a transformer maximum load factor arithmetic average value/50% x 0.5+a transformer average load factor arithmetic average value/20% x 0.5, and the formula is as follows:
；
wherein z refers to the operational efficiency index of the transformer;
calculating a line operation success index to obtain a line operation success evaluation score, wherein the line operation success index=a line maximum load rate arithmetic average value/50% x 0.5+line average load rate arithmetic average value/20% x 0.5, and the formula is as follows:
；
Wherein,wthe line operation achievement index is indicated;
calculating the equipment yield, and obtaining an equipment yield evaluation score, wherein the equipment yield = the number of years of yield/operation period, the number of years of yield refers to the total number of years of equipment yield, the unit is years, the yield standard is that the maximum load rate is more than or equal to 50%, the average load rate is more than or equal to 20%, and the formula is as follows:
；
wherein,obtaining arithmetic average value of productivity for equipment with different voltage levels;
calculating the plant yield, obtaining a plant yield evaluation score, the plant yield = plant yield number/total number of plants, the formula is as follows:
；
wherein,yield is achieved for devices of different voltage classes;
calculating the equipment yield reaching period, and obtaining the equipment yield reaching period evaluation score according to the following formula:
；
wherein,the production years of different voltage classes are reached;
calculating average load rates of the transformer and the line to obtain an average load rate evaluation score, wherein the average load rate evaluation score=an average load rate index of the transformer×0.5+an average load rate index of the line×0.5:
calculating an average load factor index of the transformer to obtain an average load factor evaluation score of the transformer, wherein the formula is as follows:
；
wherein lambda is the average load rate of transformers with different voltage levels, a5 is the duty ratio of 0-10% of main leveling average load rate, b5 is the duty ratio of 10-20% of main leveling average load rate, c5 is the duty ratio of 20-30% of main leveling average load rate, d5 is the duty ratio of 30-40% of main leveling average load rate, and e5 is more than or equal to 40% of main leveling average load rate;
Calculating an average load factor index of the circuit to obtain an average load factor evaluation score of the circuit, wherein the formula is as follows:
；
wherein mu is the average load rate of the lines with different voltage levels, a6 is the average load rate of the lines with 0-10%, b6 is the average load rate of the lines with 10-20%, c6 is the average load rate of the lines with 20-30%, d6 is the average load rate of the lines with 30-40%, and e6 is the average load rate of the lines with more than or equal to 40%;
calculating the maximum load factor indexes of the transformer and the circuit to obtain a maximum load factor evaluation score, wherein the maximum load factor evaluation score=the maximum load factor index of the transformer multiplied by 0.5+the maximum load factor index of the circuit multiplied by 0.5:
calculating the maximum load factor index of the transformer to obtain the maximum load factor evaluation score of the transformer, wherein the formula is as follows:
；
wherein,for the maximum load rates of the transformers with different voltage levels, a7 is less than 20% of the maximum load rate of the main transformer, b7 is 20-40% of the maximum load rate of the main transformer, c7 is 60-80% of the maximum load rate of the main transformer, d7 is 40-60% of the maximum negative of the main transformerThe duty ratio e7 is equal to or more than 80% of the maximum duty ratio of the main transformer;
calculating a maximum load factor index of the line to obtain a maximum load factor evaluation score of the line, wherein the formula is as follows:
；
wherein, For the maximum load rates of the lines with different voltage levels, a8 is the maximum load rate of the line less than 20%, b8 is the maximum load rate of the line between 20 and 40%, c8 is the maximum load rate of the line between 60 and 80%, d8 is the maximum load rate of the line between 40 and 60%, and e8 is the maximum load rate of the line more than or equal to 80%;
calculating the maximum load utilization hour index of the transformer and the maximum load utilization hour of the line, and obtaining a maximum load utilization hour evaluation score, wherein the maximum load utilization hour evaluation score=the maximum load utilization hour index of the transformer multiplied by 0.5+the maximum load utilization hour index of the line multiplied by 0.5:
calculating the index of the maximum load utilization hours of the transformer to obtain the evaluation score of the maximum load utilization hours of the transformer, wherein the formula is as follows:
；
wherein,for the maximum load utilization hours of the transformers with different voltage levels, a9 is less than 1000h main transformer maximum utilization hours, b9 is 1000-2500 h main transformer maximum utilization hours, c9 is 2500-4000 h main transformer maximum utilization hours, d9 is 4000-5500 h main transformer maximum utilization hours, e9 is more than or equal to 5500h main transformer maximum utilization hours;
calculating a line maximum load utilization hour index to obtain a line maximum load utilization hour evaluation score, wherein the formula is as follows:
；
Wherein,for the utilization hours of the maximum load of the lines with different voltage levels, a10 is less than 1000h of the utilization hours of the maximum line, b10 is 1000-2500 h of the utilization hours of the maximum line, c10 is 2500-4000 h of the utilization hours of the maximum line, d10 is 4000-5500 h of the utilization hours of the maximum line, and e10 is more than or equal to 5500h of the utilization hours of the maximum line;
the comprehensive evaluation module is used for weighting each evaluation index by adopting basic data of power transmission and transformation projects based on 35-750kV voltage levels of each province and utilizing MATLAB to complete comprehensive evaluation of each evaluation index:
a certain voltage class comprehensive evaluation index of 35 kv and above=the voltage class power grid development level index xf+the voltage class power grid investment efficiency benefit index xg, f and g are power grid development level index and investment efficiency benefit index weights, and f+g=1;
calculating the weight of each index by adopting a subjective and objective weighting method, and weighting each index;
the comprehensive evaluation of a certain voltage level of 35 kilovolts and above is as follows: grid operation level composite evaluation score=grid development level adaptability×0.3+investment efficiency benefit×0.7= (capacity ratio evaluation score×0.6+operation year evaluation score×0.3+heavy overload duration evaluation score×0.1) ×0.3+ (operation success evaluation score×0.2+up-to-date yield evaluation score×0.1+plant up-to-date yield evaluation score×0.1+up-to-date year evaluation score×0.1+average load factor evaluation score×0.2+maximum load utilization hour evaluation score×0.1) ×0.7;
Comprehensive evaluation is carried out on a 35 kilovolt and full voltage class power grid: the comprehensive evaluation index of the 35kV and above full-voltage-class power grid is equal to or greater than 35kV power grid comprehensive evaluation index multiplied by 1/5+110 kV and/or 66kV power grid comprehensive evaluation index multiplied by 1/5+220kV power grid comprehensive evaluation index multiplied by 1/5+500 kV and/or 330kV power grid comprehensive evaluation index multiplied by 1/5+750kV power grid comprehensive evaluation index multiplied by 1/5;
the power grid multistage evaluation module is used for completing power grid multistage evaluation according to the position of a power grid operation comprehensive evaluation result in a drawn four-quadrant graph, wherein a first quadrant refers to that the power grid in the region is high in development level and high in investment efficiency benefit, and the power grid planning is reasonable, the investment effect is obvious, and the later power grid planning and the investment plan need to be kept continuously; the second quadrant is that the regional power grid has high development level but low investment efficiency benefit, the power grid planning is reasonable, the investment effect is poor, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is reduced; the third quadrant is that the regional power grid has low development level and low investment efficiency benefit, which means that the power grid planning is unreasonable, the investment effect is poor, and the later power grid planning and the investment planning need to be redeployed; the fourth quadrant is that the area has high investment efficiency benefit but low power grid development level, the power grid planning is unreasonable, the investment effect is obvious, the later power grid planning and the investment planning need to be coordinated and matched, and the investment is added; in addition, the specific process for drawing the power grid operation comprehensive evaluation four-quadrant graph is as follows: drawing a four-quadrant graph by taking the investment efficiency benefit of a certain specific range and the adaptive average value of the power grid development level as reference points, wherein the abscissa is the investment efficiency benefit, and the ordinate is the power grid development level; and the horizontal axis datum point is used for selecting an overall investment efficiency benefit average value of the evaluation area, and the vertical axis datum point is used for selecting an overall power grid development level average value of the evaluation area.
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