Line-transformer-meter topology anomaly identification method for wiring mode of single-loop type cable power distribution network

Abstract

The invention discloses a line-transformer-meter topology anomaly identification method for a wiring mode of a single-loop cable power distribution network, and belongs to the field of line loss control in power system operation. The identification method comprises the following steps: carrying out line loss rate anomaly analysis on lines which are standby for each other; screening out the conditions of the same user meter A and the same power distribution station meter I and the same power distribution station meter II from the electricity selling side electric quantity of the mutual standbyline, and carrying out an exchange test; splitting a mutual standby line structure, and performing an electric quantity reduction test by combining a line loss rate condition and a graphic switch state; and performing on-site troubleshooting and defect elimination according to the suspected errors. Based on a branching line loss rate calculation formula, for a single-loop cable power distributionnetwork wiring mode, the influence of topology abnormity on the line loss rate is analyzed, the corresponding topology abnormity type is extracted, the objectivity of analysis is ensured, the on-sitetroubleshooting efficiency is improved, and the abnormity reason can be pre-judged before on-site checking. The method can be widely applied to the field of line loss monitoring in power system operation.

Description

technical field [0001] The invention belongs to the field of line loss control in power system operation, and in particular relates to a line-transformer-meter topology anomaly identification method in a double-ring cable distribution network connection mode. Background technique [0002] Power and line loss rate are the core operating indicators of power grid enterprises, and are the most important data that intuitively reflect the income and cost of the power sector. In particular, the line loss rate index comprehensively reflects the loss of various links in the operation of the power grid, and embodies production, scheduling, marketing, etc. The management level of each core business. [0003] The line loss rate is an important economic and technical index for power companies. The line loss rate of 10kV sub-line is usually considered reasonable in the range of [-1%, 6%]. [0004] In recent years, with the continuous improvement of the coverage rate of electric energy m...

AI Technical Summary

Problems solved by technology

However, due to factors such as synchronization anomalies, system defects, and personnel negligence, there may be anomalies in the topological relationship in the PMS system, which not only affects the calculation of the line loss rate, but also affects the safety of on-site operators.

At the same time, considering that some distribution lines involve a lot of equipment on the electricity sales side and the abnormal situation is complicated, it is very difficult to rely on on-site investigation alone, and there is still a lack of research on line-transformer-meter topology anomaly analysis

[0007] At the same time, abnormal metering on the power supply side is an important reason for the negative value of the distribution line loss rate statistics. Considering that there are many reasons for metering abnormalities, it is very difficult to check only on site

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