Design and Implementation of Passive Chip Temperature Measurement System for Primary Equipment

In order to reduce the equipment damage and potential safety failure caused by abnormal temperature rise at critical locations of substation primary equipment, temperature monitoring is the most effective and cost-effective method, a new design scheme of passive temperature measurement system based on wireless radio frequency identification technology is proposed. The system is composed of passive temperature sensor, UHF-RFID identification transmission system (Include high-gain directional circularly polarized antenna and fixed data transmission terminal), and status evaluation software package, and it can implement temperature monitoring, thermal fault identification, and early warning for the entire substation. This paper has given a detailed system implementation, and verified the feasibility of the design scheme according to the specific test situation.