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

A technology of wiring mode and identification method, which is applied in the field of online-variable-meter topology anomaly identification, can solve problems affecting line loss rate, system defects, and complex abnormal conditions, and achieve high applicability

CN110460037BActive Publication Date: 2022-07-01SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-07-01

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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.
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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...

Examples

Embodiment Construction

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

[0041] In the calculation of the statistical value of the line loss rate of the 10kV branch line in the same period, the topological relationship between the supply and sales side line-transformer-meter comes from the PMS (Production Management System, power production management) system. However, due to abnormal synchronization, system defects, personnel negligence and other factors, the topology relationship in the PMS system may be abnormal, which not only affects the calculation of line loss rate, but also affects the safety of field operators.

[0042] At the same time, considering that some distribution lines involve more equipment on the sales side and complex abnormal conditions, it is very difficult to rely on on-site investigation alone.

[0043] In addition, the 10kV distribution network includes overhead network and cable network. With the con...