A single-phase switch synchronous control system of a three-phase intelligent electric energy meter

By introducing timestamp-based quantitative diagnostics and hardware interlocking units into three-phase smart energy meters, the functional contradictions and insufficient quantitative diagnostics in the synchronous control of three-phase prepaid meters are resolved, enabling precise quantification and predictive maintenance of three-phase switch actions, and improving the safety and reliability of the system.

CN122437270APending Publication Date: 2026-07-21JIANGYIN CHANGYI GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGYIN CHANGYI GRP CO LTD
Filing Date
2026-04-23
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing hardware interlocking logic of three-phase prepaid smart energy meters has functional contradictions, making it impossible to achieve synchronous closing and lacking quantitative diagnostic capabilities, which makes single-phase faults prone to causing electrical safety accidents.

Method used

Design a three-phase intelligent power single-phase switch synchronous control system. Employ a timestamp quantization diagnostic unit and a hardware interlock unit. Integrate timestamp quantization diagnostics through an MCU, and combine it with a synchronous drive unit and a fault pre-detection unit to achieve accurate quantification and predictive maintenance of the three-phase switch operation.

Benefits of technology

It enables precise quantitative evaluation of three-phase switch operation, identifies early performance degradation, reduces operation and maintenance costs and power outage risks, and ensures system safety and reliability.

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Abstract

The application discloses a kind of single-phase switch synchronous control systems of three-phase intelligent electric energy meter, the control system includes MCU, synchronous drive unit and fault pre-check unit are connected respectively by selecting switch the coil of single-phase magnetic latching relay, the enable signal output of the hardware interlock unit is connected synchronous drive unit;The synchronous drive unit sends synchronous drive signal according to the global synchronization pulse SYNC of MCU and the enable signal of hardware interlock unit and triggers magnetic latching relay action;The state acquisition unit collects magnetic latching relay action state and time, and is transmitted to MCU, and is carried out relay performance diagnosis by quantization diagnosis unit.System ensures that fee control intelligent electric energy meter continues to adopt three independent single-phase magnetic latching relay structure and performance design advantage under the premise, overcome the functional contradiction defect that exists in its synchronization and interlock, and the problem that relay performance lacks quantitative evaluation.
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