Low-voltage transformer area topology identification system based on characteristic current

Abstract

The invention discloses a low-voltage transformer area topology identification system based on characteristic current, and relates to the technical field of electric power. According to the system, branch terminals are installed on all power supply branches of a low-voltage transformer area, by means of the mode that a characteristic current is injected into one branch terminal and the characteristic current is identified by the other branch terminals, the topology logic of the power system of the low-voltage transformer area can be automatically identified, the automation and intelligence level is high, the acquisition difficulty of the power line topology of the low-voltage transformer area is greatly reduced, and the acquisition accuracy is improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a low-voltage platform topology identification system based on characteristic current. Background technique [0002] In the power system, the station area refers to the power supply range or area of ​​a transformer, and the low-voltage station area generally refers to the power supply range or area from the low-voltage side of a transformer (10kV to 400V) to the user's meter side that it ultimately serves. The area includes a large number of electrical equipment such as overhead lines, cables, transformers, circuit breakers, meters, sensors, etc., as well as a large number of carrier facilities for accommodating electrical equipment such as box transformers, JP cabinets, branch boxes, and meter boxes. The power line topology of the low-voltage station area of ​​these power equipment and carrier facilities can accurately and truly reflect the connection relationship in the...

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Problems solved by technology

[0004] 1. Use mobile tools to test the topology of power lines in the low-voltage station area. This method requires a lot of manpower and material resources for on-site investigation, and then manually judges the topology relationship, and then draws the topology map. This method is inefficient and susceptible to human factors. impact, so the effect is not ideal

[0005] 2. Rely on the production department to provide the topological data saved during the construction of the station area, but often the matching degree between the original data and the actual situation is not good, and the data cannot be updated in time, so the reliability of the topology obtained in this way cannot be guaranteed

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