Operation-state Monitoring and Energization-status Identification of Underground Electricity Cables with Magnetoresistive Sensors

Dr Pong, Philip Wing Tat   (Project Coordinator (PC))

Mr Chan Geoffrey L.   (Co-Investigator)

Mr Lee Wing Kin   (Co-Investigator)

19

2013-03-25

172335

Operation-state Monitoring and Energization-status Identification of Underground Electricity Cables with Magnetoresistive Sensors

Magnetoresistive Sensors

Others - Electrical and Electronic Engineering

Engineering (E)

InP/033/13

Innovation and Technology Fund Internship Programme

2012

Completed

The real-time and continuous monitoring of the underground cables is needed for ensuring power quality and power distribution network stability. Currently, there is no non-invasive technology that can probe the electrical information of a 3-phase 3-core power cable. Moreover, a zero-tolerance cable avoidance technique is critical for minimizing potential threats to underground power cables. A very challenging task is to detect live power cables which are not carrying load current. Existing technology cannot provide this capability. Thus more advanced detection techniques must be developed to solve these problems. The purpose of this project is to: 1) develop an innovative new technology for monitoring the operating state and identifying the energization status of a power cable, 2) construct a sensing system incorporated with magnetoresistive sensors and the inverse calculation algorithm to demonstrate its applications, and 3) promote this new technology to power industry and other possible industrial users for technology transfer. In summary, a new technology and a new sensing system will be developed to meet the need of the power industry which cannot be coped with by existing technologies. Technology transfer through effective information dissemination, patent application, and commercialization will benefit both the local and global energy industries, and commercial sectors.