Summary

This article proposes a novel passive and semi-passive sensing system for ultra-high voltage

(UHV) equipment monitoring based on the Passive Internet of Things(P-IoT). By utilizing electromagnetic and solar energy harvesting, it completely eliminates battery dependence.

The system integrates Micro-Electro-Mechanical Systems (MEMS) temperature sensors with dual-mode communication—passive On-Off Keying (OOK) backscatter and semi-passive

Binary Phase Shift Keying(BPSK)—via a custom Radio Frequency RF front-end and robust triple Field Programmable Gate Array (FPGA) baseband, successfully mitigating electromagnetic interference. Field tests validate its extreme resilience, achieving stable communication over 150 meters and ±0.5 °C tracking accuracy under 1450 kV lightning impulses and 630 kV industrial frequencies. Ultimately, this maintenance-free solution significantly reduces costs and enhances smart grid deployment scalability.

Additional informations

Publication type Session Materials
Reference D2_11576_2026
Publication year
Publisher CIGRE
Country China, People's Republic of
Study committees
File size 456 KB
Price for non member 30 €
Price for member 30 €

Authors

ZHU Hailong - China Southern Power Grid Co.Ltd; ZHANG Guoyi - China Southern Power Grid Co.Ltd; HUANG Yu - China Southern Power Grid Co.Ltd; XIE Junyi - China Southern Power Grid Co.Ltd; QIN Chujun - China Southern Power Grid Co.Ltd; HU Jiaqi - China Southern Power Grid Co.Ltd

Keywords

Passive Internet of Things, semi passive sensing, ultra-high voltage equipment, MEMS sensors, wireless temperature monitoring, energy harvesting, smart grid

Research on passive and semi-passive P-IoT sensing for UHV equipment monitoring based on energy harvesting and low-power wireless communication