A topology identification method for low-voltage station area based on strong synchronous load feature matching

Abstract

The invention relates to a low-voltage station area topology identification method based on strong synchronous load feature matching, comprising the following steps: Step 1: Select a low-voltage station area that needs to be identified for vertical node relationship; Voltage and current sampling; Step 3: Calculating the parameters of active power P, reactive power Q and current harmonics of each analysis node within time; Step 4: Judging whether the change of active power P belongs to the interval, or not Whether the change including work power Q belongs to the interval, if it meets, go to step 5, if not, return to step 2; step 5: record the load change characteristic quantity of each node at this time; step 6: similarly carry out the load change characteristic quantity of each node If the matching is successful, it is the node of vertical affiliation in the low-voltage station area, and if the matching is unsuccessful, it is not. According to the feature matching of the upper and lower levels, the present invention has the advantages of small investment, small operation difficulty, 100% accuracy and no need for power failure.

Description

technical field [0001] The invention relates to a low-voltage station area topology identification method based on strong synchronous load feature matching, and belongs to the technical fields of smart grid and smart power utilization. Background technique [0002] With the rapid development of our country's economy, the number of residential quarters is increasing day by day, and many new and old communities have problems of chaotic filing and unclear topology of the station area. At present, due to the lack of accurate line topology diagrams in many low-voltage station areas, it is difficult to accurately troubleshoot the problem when the line fails. The common practice under the current technology is to rely on the production department to provide the topology information of the station area saved during the construction of the station area. However, to obtain the topology information of the station area during the construction from the production department, usually due ...

AI Technical Summary

Problems solved by technology

At present, due to the lack of accurate line topology diagrams in many low-voltage station areas, it is difficult to accurately troubleshoot the problem when the line fails.

The common practice under the current technology is to rely on the production department to provide the topology information of the station area that was saved during the construction of the station area. However, to obtain the topology information during the construction of the station area from the production department, usually due to various load adjustments and listing errors and other reasons, the reliability of the topological relationship information of this original file cannot be guaranteed

[0003] The low-voltage distribution station area is the smallest unit and data source of the distribution network. There has been a long-term confusion in the household line change relationship files, which has caused a series of problems such as difficult line loss management and long repair time.

However, the current HPLC-based topology recognition method has the phenomenon of cross-region recognition, which cannot guarantee that the recognition results are completely accurate.

In addition, topology recognition can be realized by step-by-step power off. The accuracy rate can reach 100%, but it is necessary to power off each node in the station area, which is difficult and expensive to operate.

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