A method for automatic confirmation of node ownership in power line carrier centralized reading system

Abstract

The invention discloses a method for automatically confirming node ownership of a power line carrier collection system. By establishing a confirmation channel with a frequency lower than 10khz, the master node on the low-voltage side of the low-voltage transformer can receive the information sent by its own slave node through the confirmation channel. The confirmation signal cannot receive the confirmation signal sent by the node on the low-voltage side of the low-voltage transformer that does not belong to itself through the confirmation channel, thereby avoiding the abnormal situation of node ownership, realizing the automatic confirmation of the node ownership of the centralized copying system, and reducing manpower On-site The cost of survey testing.

Description

technical field [0001] The invention relates to the field of power line carrier communication systems, in particular to a method for automatically confirming node ownership of a power line carrier centralized copy system. Background technique [0002] As an important branch of smart grid communication technology, power line carrier communication (PLC) technology uses the existing widely distributed power distribution network as the transmission medium, which has the advantages of wide coverage, no need for rewiring, low investment, and fast construction speed. Therefore, Power line carrier communication has good social and economic benefits. With the gradual establishment of the national smart grid, power line carrier communication technology has been widely used in the field of electric energy and various energy metering. [0003] Although the power line carrier communication technology has the above-mentioned advantages, there is a problem of node ownership in the actual ...

AI Technical Summary

Problems solved by technology

The high-frequency carrier signal higher than 15khz can pass through the transformer, and the carrier signal is coupled from the low-voltage 220V side of one transformer to the power line carrier collection system on the low-voltage 220V side of the other transformer, thus causing the two transformers to operate independently. The two centralized copying systems can exchange data, so when the master node under the transformer initiates a networking command, the slave node under the other transformer may send a response and log in to the master node because of receiving the networking command, resulting in An exception occurred when the node belonged

[0007] When there is an abnormal node ownership, it is necessary to conduct on-site inspection and testing manually to confirm the actual ownership of the actual node, which greatly wastes manpower and material resources

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