Protection system and protection method of standby power device and wind generating set

By introducing a protection system consisting of a power conversion module, voltage sensor, and controller into the backup power unit, the charging and connection issues of the backup power unit during main power system failures are resolved. This enables automatic charging and disconnection when the main power system is restored, extending its service life and improving the reliability and safety of the power system.

CN121529905APending Publication Date: 2026-02-13BEIJING JINFENG HUINENG TECH CO LTD
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Patent Information

Application Number
CN202411067434.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-05
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

Existing backup power devices cannot be charged in time when the main power system fails, resulting in the inability to supply power normally. Furthermore, they are not disconnected from the electrical equipment after the power supply is cut off, which leads to energy consumption, shortens service life, and poses an irreversible risk of failure. At the same time, the lack of monitoring of the charging status increases the inadequacy of the power system's security.

Method used

A protection system for a backup power device is provided, including a power conversion module, a voltage sensor, and a controller. The backup power device is activated to supply power when the main power system fails, and the connection between the backup power device and the electrical equipment is disconnected when the power conversion module stops outputting power. When the main power system restores power supply, the backup power device is automatically charged, and the charging status of the backup power device is monitored, the power supply time is calculated, and an alarm signal is fed back.

Benefits of technology

It extends the service life of backup power devices, improves the reliability and security of the power system, ensures that backup power devices can supply power in a timely manner when needed, reduces energy consumption, and lowers the risk of irreversible failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a protection system and method for a standby power device and a wind generating set. The protection system of the standby power device comprises the standby power device which comprises a battery; a power conversion module connected to the standby power device via a first switch and connected to an external power supply via a second switch; the voltage sensor is used for detecting the voltage of the standby power device; and the controller is used for receiving the voltage signal output by the voltage sensor and controlling the first switch and the second switch to be switched on and switched off. When the power conversion module stops output, the standby power device is disconnected from the electric equipment to protect the standby power device, and when the main power system recovers power supply, the standby power device is automatically charged to prolong the service life of the standby power device. In addition, the charging state of the standby power device is monitored, so that reliable operation of the power system is improved, and the standby power device is protected.
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