An automatic line selection method for intelligent temperature transmitter with fault self-checking
By combining the automatic wire selection module and the platinum resistance temperature detector, the problems of difficult wiring of three-wire platinum resistance thermometers and lack of remote self-testing are solved, realizing efficient and accurate wiring identification and fault location, and improving the field work efficiency and accuracy of power transformer temperature measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI POWER SUPPLY BRANCH OF STATE GRID JIANGSU ELECTRIC POWER CO LTD
- Filing Date
- 2024-10-25
- Publication Date
- 2026-07-21
AI Technical Summary
Existing three-wire platinum resistance thermometers are difficult to wire in power transformer temperature measurement, prone to errors, and lack remote self-testing function, resulting in low on-site work efficiency and difficulty in fault location.
An automatic line selection module and a platinum resistance temperature detector are used to identify the wiring sequence by combining a switching switch and a preset excitation signal. Software compensation is performed in conjunction with a multilayer perceptron model to achieve automatic line selection and fault self-diagnosis.
It improves wiring efficiency, reduces wiring errors, enables accurate remote fault location and temperature measurement, and reduces measurement errors caused by contact resistance and environmental changes.
Smart Images
Figure CN119471184B_ABST