Transformer area line loss rate evaluation and abnormality judgment method based on intelligent electric meter

A smart meter and abnormal judgment technology, which is applied in the direction of measuring electric power, measuring electric power through current/voltage, measuring electric power, etc., can solve the problems of calculation of line loss rate and difficulty in abnormal judgment in the station area, and achieves the promotion of refined management and reduction of The effect of station area loss and data quality improvement

Active Publication Date: 2020-09-22
GUIZHOU POWER GRID CO LTD
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AI Technical Summary

Problems solved by technology

[0009] Therefore, the technical problem to be solved by the present invention is to overcome the technical deficiencies in the calculation of station area line loss and abnormal judgment in the prior art, and the defects of difficulty in calculating and abnormal judgment of a large number of station area line loss rates, thereby providing a smart meter-based Evaluation and Abnormal Judgment Method of Line Loss in Station Area

Method used

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  • Transformer area line loss rate evaluation and abnormality judgment method based on intelligent electric meter
  • Transformer area line loss rate evaluation and abnormality judgment method based on intelligent electric meter
  • Transformer area line loss rate evaluation and abnormality judgment method based on intelligent electric meter

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Embodiment 1

[0051] This embodiment provides a smart meter-based method for evaluating the line loss rate of the station area and judging the abnormality, including, using the smart meter in the data acquisition module to collect the power consumption parameter data in the station area; for the uncollected power consumption data , use the line loss estimation module to calculate the estimated value of the power consumption parameter; the data processing module obtains the calculation value of the daily electricity sales, daily loss value, daily line loss rate, and daily power supply in the station area based on the power consumption data and the estimated value of the power consumption parameter ; Use the distribution transformer detection terminal in the data acquisition module to calculate the statistical values ​​of daily electricity sales, daily loss value, daily line loss rate, and daily power supply in the area, and compare them with the calculated values ​​to make abnormal judgments; ...

Embodiment 2

[0086] This embodiment provides a smart meter-based flow loss rate evaluation and abnormality judgment method in a station area. The logic process is as follows figure 1 As shown, it includes the following steps:

[0087] Step 1. According to the wire type, input the ratio X / R value of the wire reactance and resistance in the station area;

[0088] Step 2. The data collector collects the voltage U of the smart meter user 2nt (a total of N users, T is the total number of times collected in one day), current I 2nt , power factor and TTU (distribution transformer monitoring terminal) voltage U 1t , current I 1t , power factor Acquisition is carried out in periods of 15 minutes, half an hour, and 1 hour. Collect the user's daily electricity sales E through smart meters 2n , the daily power supply E of the station area is collected through TTU 1 . Process the collected data, find abnormal data alarms, and eliminate abnormal data. After that, the time series analysis met...

Embodiment 3

[0095] In this embodiment, the method and system in Embodiment 1 are used to select 10 station areas with abnormal statistical line loss rates for pilot projects, and the method is passed through the data collection and processing module, the uncollected data estimation module, and the line loss calculation module. , line loss statistics module, line loss anomaly analysis module, system interface, and alarm module are integrated in the centralized collector and low-voltage centralized reading system to calculate the line loss rate in the station area. Before the implementation, the line loss rate of 10 station areas was between 15-40%, with large fluctuations, and the statistical line loss rate was abnormal; after the implementation, the calculated line loss rate of the 10 station areas was below 8%. Rate comparison and exception handling, the statistical line loss rate is reduced to 5% - 10%, effectively guiding the line loss management in the station area.

[0096] Table 1: ...

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Abstract

The invention provides a transformer area line loss rate evaluation and abnormality judgment method based on an intelligent electric meter, and the method comprises the steps: collecting power utilization parameter data in a transformer area through the intelligent electric meter in a data collection module; for the uncollected power utilization data, calculating a power utilization parameter estimation value by utilizing a line loss estimation module; the data processing module obtaining a calculation value according to the power utilization data and the power utilization parameter estimationvalue; using a distribution transformer detection terminal in the data acquisition module to count a transformer area statistical value, and comparing the transformer area statistical value with a calculated value to perform abnormality judgment; and the line loss anomaly analysis module setting a metering error threshold, comparing the daily statistical power supply quantity with the calculatedpower supply quantity and the metering error threshold, and analyzing an anomaly reason. According to the transformer area line loss rate evaluation and abnormality judgment method based on the intelligent electric meter, a system solution is provided for transformer area line loss rate calculation and abnormality judgment, and the problem that transformer area line loss analysis and management are difficult is solved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for evaluating the line loss rate of a station area and an abnormal judgment method based on a smart meter. Background technique [0002] Line loss is the loss caused by current flowing through resistance in the process of transmission, transformation and distribution in the power grid, and it is an economic and technical index for the operation of power grid enterprises. Since power grid enterprises started four-point line loss management, line loss management in sub-regions has always been a difficult problem for power grid enterprises. [0003] At present, there are the following deficiencies in the line loss analysis and management of the station area: [0004] 1) Due to the large number of station areas, it takes a lot of manpower and material resources to calculate the theoretical line loss for all station areas, which increases the difficulty of line loss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R21/00G01R21/06G01R22/06
CPCG01R31/00G01R21/006G01R21/003G01R21/06G01R22/06Y04S10/50
Inventor 张裕李庆生罗宁赵庆明陈巨龙蒋泽甫唐雪用陈波孙斌薛毅张彦龙蔷邓朴
Owner GUIZHOU POWER GRID CO LTD
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