CN111967156A - Multi-dimensional 10kV power grid loss reduction optimization method based on correlation analysis model - Google Patents
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Abstract
The invention discloses a multi-dimensional 10kV power grid loss reduction optimization method based on a correlation analysis model, which comprises the following steps of: the method comprises the steps of establishing a multidimensional 10kV power grid line loss correlation analysis model, analyzing line loss distribution conditions of different scenes and influence factors by using the multidimensional 10kV power grid line loss correlation analysis model, analyzing the influence degree of each influence factor on line loss in the different scenes, and then taking the scene with the minimum influence degree of each influence factor on the line loss in the different scenes as the scene of the 10kV power grid to complete multidimensional 10kV power grid loss reduction optimization based on the correlation analysis model.
Description
Technical Field
The invention belongs to the field of planning and designing of a power distribution network of a power system, and relates to a multi-dimensional 10kV power grid loss reduction optimization method based on a correlation analysis model.
Background
Energy conservation is a long-term strategic policy of economic and social development in China and is also a very urgent task at present.
The power industry is one of the most important fields of energy-saving work, an economical, efficient and stable power supply system is constructed, and the method is an important foundation for ensuring the stable development of national economy and society. Under the new trend of building resource-saving and environment-friendly society in China, the power industry bears the historical mission of promoting society to change economic development modes, adjusting industrial structures and realizing energy conservation and emission reduction and low-carbon economic development.
The line loss rate is an important technical index which comprehensively reflects the production operation efficiency and the operation management level of the power grid enterprise, and the line loss enhancement is an important management content which comprehensively improves the operation efficiency and the benefits of the company. The power supply enterprise actively responds to the national call, implements the line loss management method of the national grid company, establishes a sound line loss long-acting working mechanism, stably improves the line loss management level, and establishes a 10kV high-level line loss lean management system. Therefore, a multi-dimensional 10kV power grid loss reduction optimization method based on a correlation analysis model needs to be developed, cost reduction and efficiency improvement can be realized, and construction and management of a modern energy-saving power grid are accelerated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multidimensional 10kV power grid loss reduction optimization method based on a correlation analysis model, and the method can realize the 10kV power grid loss reduction optimization and achieve the purposes of cost reduction and efficiency improvement.
In order to achieve the purpose, the multidimensional 10kV power grid loss reduction optimization method based on the correlation analysis model comprises the following steps:
establishing a multidimensional 10kV power grid line loss correlation analysis model, analyzing line loss distribution conditions of different scenes and influence factors by using the multidimensional 10kV power grid line loss correlation analysis model, analyzing the influence degree of each influence factor on line loss in different scenes, and then taking the scene with the minimum influence degree of each influence factor on line loss in different scenes as the scene of a 10kV power grid to finish the multidimensional 10kV power grid loss reduction optimization based on the correlation analysis model.
Analyzing the line loss situation, the line loss distribution situation and the line loss management situation of the 10kV power grid, excavating the loss reduction potential of the 10kV power grid, and establishing a multidimensional 10kV power grid line loss correlation analysis model according to the line loss situation and the loss reduction potential of the 10kV power grid.
The invention has the following beneficial effects:
when the multidimensional 10kV power grid loss reduction optimization method based on the correlation analysis model is specifically operated, the multidimensional 10kV power grid line loss correlation analysis model is used for analyzing different scenes and line loss distribution conditions of influence factors, analyzing the influence degree of each influence factor on line loss in different scenes, and then taking the scene with the minimum influence degree of each influence factor on line loss in different scenes as the scene of the 10kV power grid to reduce the line loss to the maximum extent and achieve the purposes of cost reduction and efficiency improvement.
Drawings
Fig. 1 is a scatter diagram showing the results of correlation analysis of the line loss and the power supply radius as a whole;
FIG. 2 is a scatter diagram of the correlation analysis results of urban line loss and power supply radius;
FIG. 3 is a scatter diagram of the correlation analysis results of line loss and power supply radius in rural areas;
FIG. 4 is a scattergram of the results of analysis of the correlation between the line loss and the power supply radius in a mountain area;
FIG. 5 is a scatter plot of the overall line loss and load rate correlation analysis results;
FIG. 6 is a scatter diagram of correlation analysis results of urban line loss and load factor;
FIG. 7 is a scatter diagram of rural line loss and load rate correlation analysis results;
FIG. 8 is a scatter plot of the correlation analysis results of mountain area line loss and load rate;
FIG. 9 is a scatter plot of correlation analysis results for line loss and high energy consuming transformers;
fig. 10 is a scatter diagram of the correlation analysis result of the line loss and the reactive compensation.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the invention discloses a multi-dimensional 10kV power grid loss reduction optimization method based on a correlation analysis model, which comprises the following steps of:
establishing a multidimensional 10kV power grid line loss correlation analysis model, analyzing line loss distribution conditions of different scenes and influence factors by using the multidimensional 10kV power grid line loss correlation analysis model, analyzing the influence degree of each influence factor on line loss in different scenes, and then taking the scene with the minimum influence degree of each influence factor on line loss in different scenes as the scene of a 10kV power grid to finish the multidimensional 10kV power grid loss reduction optimization based on the correlation analysis model.
Analyzing the line loss situation, the line loss distribution situation and the line loss management situation of the 10kV power grid, excavating the loss reduction potential of the 10kV power grid, and establishing a multidimensional 10kV power grid line loss correlation analysis model according to the line loss situation and the loss reduction potential of the 10kV power grid.
Example one
In this embodiment, a power supply company 10kV power grid is taken as an example, and by combining with regional characteristics, multi-scene division (urban area, rural area, mountain area) is performed on the 10kV power grid, the composition of 10kV line loss and various factors affecting the line loss are researched, typical lines in different scenes are extracted to perform line loss composition analysis and different dimensionality influence factor analysis, a 10kV line loss optimization scheme research model is established, and a line loss optimization scheme is formulated.
1) Line loss correlation analysis
1. Load moment and line loss correlation analysis
On the basis of the load moment and line loss data of the 10kV line, the correlation between the load moment and the line loss of the 10kV power grid is analyzed, and the correlation analysis result of the line loss and the power supply radius and a scatter diagram thereof are established as shown in table 1 and fig. 1.
TABLE 1
It can be seen that the overall correlation degree of the load moment and the line loss of the 10kV power grid is high, and the correlation coefficient reaches 0.912 through calculation.
The correlation analysis results of urban line loss and power supply radius and scatter diagrams thereof are shown in table 2 and fig. 2;
TABLE 2
The results of the rural line loss-power supply radius correlation analysis and the scatter diagram thereof are shown in table 3 and fig. 3:
TABLE 3
The results of the correlation analysis of the line loss and the power supply radius in the mountainous area and the scatter diagram thereof are shown in table 4 and fig. 4:
TABLE 4
As shown in the above, through calculation and analysis, the urban load moment and line loss correlation degree is obviously correlated, the rural load moment and line loss correlation degree is highly correlated, and the mountain load moment and line loss correlation degree is highly correlated.
2. Line load and line loss correlation analysis
On the basis of the 10kV line load and line loss data, the correlation between the 10kV power grid load and the line loss is analyzed, and a line loss and load rate correlation analysis result and a scatter diagram thereof are established as shown in table 5 and fig. 5.
TABLE 5
It can be seen that the overall correlation degree of the 10kV power grid load and the line loss is high, and the correlation coefficient reaches 0.887 through calculation.
Results of correlation analysis of line loss and load factor in urban areas and a scatter diagram thereof are shown in table 6 and fig. 6;
TABLE 6
The line loss and load rate correlation in rural areas and scatter plots thereof are shown in table 7 and fig. 7;
TABLE 7
The line loss and load rate correlation in the mountainous area and the scatter diagram thereof are shown in table 8 and fig. 8;
TABLE 8
As shown in the above-mentioned analysis and scatter diagram, it can be known from calculation and analysis that the correlation degree between the urban line load and the line loss is highly correlated, the correlation degree between the rural line load and the line loss is significantly correlated, and the correlation degree between the mountain line load and the line loss is weakly correlated.
Correlation analysis of high-energy-consumption distribution transformer and line loss
Based on the 10kV high-energy distribution transformer and the line loss data, the correlation between the 10kV power grid high-energy distribution transformer and the line loss is analyzed, and the correlation analysis result of the line loss and the high-energy transformer and a scatter diagram thereof are established as shown in table 9 and fig. 9.
TABLE 9
It can be seen that the overall correlation degree of the high-energy distribution and transformation and the line loss of the 10kV power grid is obviously correlated, and the correlation coefficient reaches 0.710 through calculation.
4. Reactive compensation and line loss correlation analysis
On the basis of the reactive compensation and line loss data of the 10kV power grid, the correlation between the reactive compensation and the line loss of the 10kV power grid is analyzed, and the correlation analysis result of the line loss and the reactive compensation and a scatter diagram thereof are established as shown in table 10 and fig. 10.
Watch 10
It can be seen that the overall correlation degree of the reactive power compensation and the line loss of the 10kV power grid is obviously correlated, and the correlation coefficient reaches 0.789 through calculation.
By carrying out data mining analysis on the power grid basic data of the power supply enterprise and deeply analyzing the mutual relation among the line loss related data, the effects of various influencing factors on line loss are analyzed, the internal relation between the power grid loss of the enterprise and related indexes is also analyzed, and support is provided for a power grid loss reduction planning scheme of the power supply enterprise.
2) Different scene line loss correlation analysis
Through line loss correlation analysis, the correlation between the line loss and the influence factors of the line loss is determined, and the correlation between the line loss influence factors of each scene is obtained by combining a loss reduction research model and is shown in a table 11;
TABLE 11
As can be seen from table 11, the line loss correlation degrees are different for different scenes, wherein the correlation degree between the urban 10kV line load, the load moment and the line loss is high, the correlation degree between the rural 10kV line load moment and the line loss is high, and the correlation degree between the mountain 10kV line load moment and the line loss is high.
3) Loss reduction optimization model analysis
According to the research of the correlation analysis model, the influence factors of the 10kV lines on the line loss in different scenes are different, corresponding solutions are provided for the influence factors of the line loss in each scene by combining the research results of the model, and the loss reduction planning schemes of different scenes and different factors are summarized.
The relevance and the efficiency of urban 10kV line load, load moment and line loss are high, and urban loss reduction planning should be combined with reasonable line load cutting such as 10kV line new-out and optimized connection line of a transformer substation, so that the problems of line load and unreasonable load moment are solved.
The relevance and the effective rate of the rural 10kV line load moment and the line loss are high, seasonal loads exist, and the problems of unreasonable load moment and seasonal loads are solved through reasonable layout of power supply points, adjustment of operation modes and the like in rural loss reduction planning.
The relevance and the efficiency of the load moment and the line loss of the 10kV line in the mountainous area are high, and the problem of overlong power supply radius is solved by combining power distribution points, reasonable circuit splitting and the like in the loss reduction plan of the mountainous area.
Claims (2)
1. A multidimensional 10kV power grid loss reduction optimization method based on a correlation analysis model is characterized by comprising the following steps:
establishing a multidimensional 10kV power grid line loss correlation analysis model, analyzing line loss distribution conditions of different scenes and influence factors by using the multidimensional 10kV power grid line loss correlation analysis model, analyzing the influence degree of each influence factor on line loss in different scenes, and then taking the scene with the minimum influence degree of each influence factor on line loss in different scenes as the scene of a 10kV power grid to finish the multidimensional 10kV power grid loss reduction optimization based on the correlation analysis model.
2. The multidimensional 10kV power grid loss reduction optimization method based on the correlation analysis model as claimed in claim 1, wherein the line loss situation, the line loss distribution situation and the line loss management situation of the 10kV power grid are analyzed, the loss reduction potential of the 10kV power grid is mined, and then the multidimensional 10kV power grid line loss correlation analysis model is established according to the line loss situation and the loss reduction potential of the 10kV power grid.
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