Line-to-meter topology anomaly identification method for double-shot cable distribution network wiring method

Abstract

The invention provides a line-to-meter topology anomaly identification method for a double-shot cable distribution network wiring method, which belongs to the field of line loss control. The identification method comprises the steps that line loss rate anomaly analysis is carried out on a first line n and a second line m, which are mutually standby; the A and B meters of the same user and the first and second distribution meters of same substation are selected from the power of the power consumption side of the first line n and the second line m, and an exchange test is performed; the line structure of the first line n and the second line m is split, and the line loss rate and the figure switch state are combined to perform a power reduction test; and on-site troubleshooting and elimination are carried out for the first line n or the second line m according to a suspected error set. The identification method can directly reflect the influence of topology anomaly on the line loss rateof each line, can be used to predict the anomaly cause. The anomaly cause can be effectively judged, so that the identification method has high applicability. The identification method can be widely used in the field of line loss monitoring in the operation of a power system.

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-shot 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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