A Line-Transformer-Meter Topology Anomaly Identification Method for Double-shot Cable Distribution Network Wiring

Abstract

The invention discloses a line-transformer-meter topology anomaly identification method of a double-shot cable distribution network wiring method, which belongs to the field of line loss control. The identification method includes: carrying out an abnormal analysis on the line loss rate of the first line n and the second line m which are backups for each other; For the situation of No. 1 and No. 2 distribution substations in the substation, do the exchange test; split the line structure of the first line n and the second line m, and combine the line loss rate and the graphic switch state to restore the power Test; according to the set of suspected errors, conduct on-site investigation and elimination of the first line n or the second line m. It can directly reflect the impact of topology anomalies on the line loss rate of each line, and can be used to predict the cause of the anomaly; it can effectively determine the cause of the anomaly, and has high applicability. It can be widely used in 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 the operation of a power system, and in particular relates to a line-transformer-meter topology anomaly identification method of a double-radiation cable distribution network wiring mode. Background technique [0002] Electricity and line loss rate are the core business indicators of power grid enterprises, and are the most important data to directly reflect the revenue and cost of the power sector. In particular, the line loss rate indicator comprehensively reflects the loss of each link in the operation of the power grid, and reflects production, dispatching, marketing, etc. The management level of each core business. [0003] Line loss rate is an important economic and technical indicator of power companies. Line loss rates for 10kV branch lines are generally considered reasonable in the range of [-1%, 6%]. [0004] In recent years, with the continuous improvement of the coverage rate of e...

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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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