Low-voltage transformer area user phase identification method and system based on correlation analysis
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A technology of correlation analysis and low-voltage station area, which is applied in the field of user phase identification in low-voltage station area, can solve the problems of increasing operating costs of power companies, inability to predict in advance, and large manpower and material resources, etc., to achieve the effect of large-scale promotion
Inactive Publication Date: 2020-01-24
STATE GRID ZHEJIANG ELECTRIC POWER CO MARKETING SERVICE CENT +1
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[0003] However, both of these two inspection methods require manual door-to-door inspections, and they cannot be predicted in advance. They can only be inspected door-to-door. For the normal electricity consumption of users, the latter needs to rely on the current new type of user electricity consumption information collection device, which is not available in some old communities, and needs to invest in carrier communication equipment, which increases the operating cost of power companies
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Embodiment 1
[0032] This embodiment provides a correlation analysis-based user phase identification method for low-voltage stations, such as figure 1 As shown, it includes the steps:
[0033] 1) Select the station area to be analyzed, select the station area to be analyzed from the electricity consumption information collection system, extract the 96-point daily load data of all users, and determine one household of A, B, and C phase users through investigation. Maintained in the system as a reference point for correlation analysis;
[0034] 2) Obtain the sorted data to be analyzed through data cleaning and standardization;
[0035] 3) Using the Pearson correlation analysis method, carry out correlation analysis on the load characteristics within a period of time, obtain the correlation results of each day in the analysis period, and carry out the statistical analysis of the mean value and maximum value attribution phase, and carry out various calculations according to the statistical res...
Embodiment 2
[0070] This embodiment provides a low-voltage station area user phase identification system based on correlation analysis, such as Figure 5 shown, which includes:
[0071] Correlation analysis reference point determination unit: select the station area to be analyzed, select the station area to be analyzed from the power consumption information collection system, extract 96 points of daily load data of all users, and determine phase A, B, and C through investigation Each user has one account, which is maintained in the system as a reference point for correlation analysis;
[0072] Data cleaning and processing unit: through data cleaning and standardization processing, the sorted data to be analyzed is obtained;
[0073] Correlation analysis unit: use the Pearson correlation analysis method to conduct correlation analysis on the load characteristics within a period of time, obtain the correlation results of each day in the analysis period, and perform statistical analysis of ...
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Abstract
The invention discloses a low-voltage transformer area user phase identification method and system based on correlation analysis. The low-voltage transformer area user phase identification method comprises the following steps: selecting a to-be-analyzed transformer area, selecting the to-be-analyzed transformer area from a power consumption information acquisition system, extracting 96-point dailyload data of all users, determining each of A-phase, B-phase and C-phase users through troubleshooting, and maintaining the users in the system to serve as reference points of correlation analysis; performing data cleaning and standardization processing to obtain sorted to-be-analyzed data; and adopting a Pearson correlation analysis method to carry out correlation analysis on the load characteristics in a period of time to obtain correlation results of each day in an analysis time period, carry out statistical analysis on phases to which a mean value and a maximum value belong, carry out prediction analysis on the phases to which the users belong according to statistical results, and carry out visual presentation by using a maximum and minimum normalization method. The low-voltage transformer area user phase identification method does not depend on a front-line electric power employee to check lines on site, and carries out topology analysis on massive users on line.
Description
technical field [0001] The invention belongs to the technical field of power supply network, in particular to a correlation analysis-based method and system for user phase identification in a low-voltage station area. Background technique [0002] The low-voltage station area is the last link of the entire power supply network. Due to its intricate power supply area and various types of users, the user topology files of the low-voltage station area often have many errors and difficult troubleshooting. At present, there are two main troubleshooting methods for topological information errors in the user station area: manual on-site inspection and low-voltage carrier communication technology; the former mainly relies on on-site inspection by front-line electric power employees, and sometimes needs to carry out "power inspection" work; low-voltage carrier communication technology The technology mainly relies on a new type of collection meter device and a handheld carrier communi...
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