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

A technology of wiring mode and identification method, which is applied in the field of online-variable-meter topology anomaly identification, can solve the problems of affecting line loss rate, difficulty in troubleshooting, and abnormal topology relationship of PMS system, etc., and achieves high applicability

CN110460037AActive Publication Date: 2019-11-15SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-11-15

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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.
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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...

Examples

Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] When calculating the statistical value of the line loss rate of the 10kV sub-line in the same period, the topological relationship between the power supply and sale side line-transformer-meter comes from the PMS (Production Management System, power production management) system. 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.

[0042] At the same time, considering that some branch 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.

[0043] In addition, the 10kV distribution network includes overhead netw...