Low-voltage commutation switch device based on closed combination switch and commutation method

By introducing a closed composite switch and an intelligent detection unit into the low-voltage phase commutation switch device, the health status of the switching device is monitored and predicted in real time, and the problem of difficulty in monitoring the device status in the prior art is solved, and the safety and efficiency of equipment operation are improved.

CN119727131APending Publication Date: 2025-03-28GUANGDONG POWER GRID CORP ZHAOQING POWER SUPPLY BUREAU
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Patent Information

Application Number
CN202411917899.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the prior art, it is difficult to monitor the operating status of switching devices in real time, which makes it difficult to predict the health status of devices during phase exchange, increasing the risk of equipment damage and grid safety accidents.

Method used

A low-voltage phase commutation switching device based on a closed composite switch is designed, including a power supply unit, a detection unit and a control module. By setting the thyristor and electromagnetic relay in series in the main loop, and setting the detection unit to monitor the device status in real time, real-time detection and prediction of the device health status can be achieved.

Benefits of technology

Real-time status monitoring and health status prediction of thyristors and electromagnetic relays are realized, phase commutation strategies are dynamically adjusted, equipment operation efficiency and safety are improved, and maintenance costs are reduced.

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Abstract

The invention provides a low-voltage phase-change switch device based on a closed combination switch and a phase-change method. The low-voltage phase-change switch device based on the closed combination switch comprises a power supply unit, the power supply unit comprises three-phase power supply circuits, each power supply circuit is provided with a thyristor, a first electromagnetic relay and a second electromagnetic relay, the thyristors are connected with the first electromagnetic relays in series, and the second electromagnetic relays are connected with the thyristors and the first electromagnetic relays in parallel; the detection unit is electrically connected with the power supply unit, the detection unit is used for detecting the working states of the thyristor, the first electromagnetic relay and the second electromagnetic relay, and the problem that in the prior art, the operation state of a switching device is difficult to monitor in real time in the commutation process is solved.
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