Line change relationship identification system and method

Abstract

The invention provides a line change relation identification system and method. The method comprises the steps that a coding device is installed at a low-voltage side of a distribution transformer, adecoding device is installed on each feeder line of a switch cabinet or a branch line of an adjacent switch cabinet, and a main station is in communication connection with the coding device and the decoding device; the encoding device encodes the acquired information of a transformer terminal unit; the decoding device decodes the characteristic vector current signal, the main station issues the control instruction to the transformer terminal unit to identify the line change relationship, and the line change relationship is identified by encoding and decoding the information of the transformerterminal unit. The process is simple, the identification efficiency and the identification accuracy are greatly improved, and the maintenance is convenient; the characteristic vector current signal frequency is low; the power transmission and distribution transformer capacity is high, and the transmission distance is long. The system is simple in principle, small in size, low in cost, easy to popularize on a large scale and wide in application range.

Description

technical field [0001] The invention relates to the technical field of distribution networks, in particular to a system and method for identifying line-to-line transformation relationships. Background technique [0002] The distribution network has the characteristics of many points, wide areas, and long lines. The number of equipment is large, the distribution range is wide, and the communication environment is complex. On the one hand, the distribution network scale of power grid companies is getting larger and larger, the cable conversion rate is gradually increasing, the urbanization process is accelerating, and the distribution network expansion and upgrading are frequent, especially after the load density increases. If there is confusion about the corresponding relationship between power supply transformers, substations, feeders, etc. in the network, it will cause potential safety hazards. On the other hand, in terms of the development of new access services, the dist...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages of complex identification process, low identification efficiency and accuracy, and inconvenient maintenance in the above-mentioned prior art, the present invention provides a line-change relationship identification system, including: an encoding device, a decoding device and a master station;

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