Automatic meter reading system with carrier interference resistance for smart meter

Abstract

The invention relates to an automatic meter reading system with carrier interference resistance for a smart meter. The system comprises a master station, a concentrator, a three-phase intelligent electric energy meter and a power consumer terminal, wherein the master station communicates with the concentrator; the concentrator is connected with the three-phase intelligent electric energy meter through a cable; the three-phase intelligent electric energy meter is connected with the power consumer terminal through the cable; and a three-phase alternating current contactor is arranged on the cable of the three-phase intelligent electric energy meter and the power consumer terminal and is connected with the three-phase intelligent electric energy meter through a space-time switch. The automatic meter reading system with carrier interference resistance for the smart meter has a simple structure, a scientific and reasonable design and high interference resistance, can effectively improve the meter reading rate, and is lower in manufacturing cost, safe and reliable.

Description

technical field [0001] The invention belongs to the field of automatic meter reading systems for smart electric meters, in particular to an automatic meter reading system for smart electric meters with anti-carrier interference. Background technique [0002] The transformation of smart meters is in full swing, and the "full coverage and full collection" of low-voltage users will be fully realized within 4-5 years. With the gradual realization of low-voltage automatic collection, the investment in manpower and material resources for meter reading in the power supply department will be greatly reduced. However, in actual use, it is found that due to the 24-hour operation of some three-phase equipment in the low-voltage station area, such as: high-frequency water pumps, etc., the meter reading efficiency will decrease. In order to deal with interference, the concentrator will continue to make up and change the route. , that is, using different smart meters to relay meter readin...

AI Technical Summary

Problems solved by technology

In uploading data, due to the interference of the equipment in the line, the concentrator’s supplementary recruiting and relay mechanism cannot play a very good effect, and the copying rate will be greatly reduced, generally only about 60%. After consulting the data, it is found that such The problem is common in the low-voltage carrier field. The traditional treatment method is mainly to increase the concentrator and repeater, which not only increases the follow-up capital investment, but also has a certain effect on the station area with light interference source, and is powerless to the station area with heavy interference source. , there is currently no effective solution in the country

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