Power line carrier centralized meter reading system node belonging automatic confirmation method

Abstract

The invention discloses a power line carrier centralized meter reading system node belonging automatic confirmation method. Through building a confirmation channel with frequency lower than 10khz, a main node at a low voltage side of a low voltage transformer can receive confirmation signals sent by slave nodes belonging to the main node through the confirmation channel and can not receive confirmation signals sent by nodes which do not belong to the low voltage side of the low voltage transformer of the main node through the confirmation channel, a node belonging abnormal condition can be avoided, automatic node belonging confirmation in the centralized meter reading system can be realized, and the cost for manual field inspection and test is reduced.

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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