Generator rotor temperature rise fault type discrimination system and method

By using infrared transmission and fiber optic communication coupling analysis of rotor temperature and excitation current data, the problem of accuracy in identifying generator rotor temperature rise fault types was solved, achieving more efficient and accurate fault type identification, extending the service life of rotor hardware, and improving the stability of the generator excitation system.

CN116430223BActive Publication Date: 2026-07-24华能吉林发电有限公司九台电厂 +1
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
华能吉林发电有限公司九台电厂
Filing Date
2023-04-03
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing technology, the accuracy of identifying generator rotor temperature rise fault types is poor. This is mainly because the rotor is a rotating closed cavity, and the acquisition of non-electrical signals is greatly affected by internal electromagnetic interference. Furthermore, it can only be indirectly identified through electrical quantities, resulting in a single and inaccurate identification method.

Method used

The rotor temperature detection module, excitation current detection module, and central control module in the control room are used to collect rotor temperature and excitation current data through infrared transmission and fiber optic communication, and data feature coupling analysis is performed to obtain the generator rotor temperature rise fault type.

Benefits of technology

It effectively resists the influence of electromagnetic interference, improves the accuracy of rotor non-electrical quantity detection, enhances the accuracy of rotor fault category judgment, extends the service life of rotor hardware, and improves the stability of generator excitation system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116430223B_ABST
    Figure CN116430223B_ABST
Patent Text Reader

Abstract

The application provides a generator rotor temperature rise fault type discrimination system and method, and relates to the field of motor rotor fault protection.The system comprises a rotor temperature detection module, an excitation current detection module and a centralized control room central control module, wherein: the rotor temperature detection module is used for collecting rotor temperature data when the rotor of the generator rotates and transmitting the rotor temperature data to the excitation current detection module based on an infrared transmission mode; the excitation current detection module is used for collecting excitation current data of the generator, receiving the rotor temperature data sent by the rotor temperature detection module based on the infrared transmission mode, and sending the excitation current data and the rotor temperature data to the centralized control room central control module based on an optical fiber mode; and the centralized control room central control module is used for performing data feature coupling analysis on the excitation current data and the rotor temperature data received from the excitation current detection module to obtain a generator rotor temperature rise fault type.The application improves the judgment accuracy of rotor fault categories.
Need to check novelty before this filing date? Find Prior Art