To develop online partial discharge monitoring system for TX XLPE cable joint without external power supply

• Main Author: Choi, Chun Kit
• Other Authors: Foo Yi Shyh Eddy
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2020
• Subjects: Engineering::Electrical and electronic engineering::Electric power::Auxiliaries, applications and electric industries; Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution
• Online Access: https://hdl.handle.net/10356/138626
• Institution: Nanyang Technological University

Currently in the power industry, usage of continuous Condition Monitoring (CM) is a common method that is implemented to regulate and supervise the lifespan of the cable at many levels. There are many challenges during cable Partial Discharge (PD) monitoring in different applications. One of the factors affecting the degree of accuracy in detecting PD is environmental conditions. PD is mainly caused by the natural phenomenon of distributing high voltage level, with the addition of cable degradation over time, resulting in capacitive effect which leads to PD. Hence, there are no permanent cost-effective solutions to eliminate PD- related issues. Although there is much to explore and investigate when developing a solution, continuous monitoring and replacement of cables is a reliable approach in tackling the issue before it leads to power failure in the electrical system. Therefore, battery driven devices or meters are utilised to perform the monitoring of the cables. This leads to the sourcing of alternative energy sources to maintaining power supply to these sets of monitoring devices. In this project, the aim is to develop an alternate source of power for the PD monitoring system such as harnessing electromagnetic energy, then converting the electromagnetic energy to electrical energy to power up and charge up PD monitoring devices. This report includes reviews of existing PD monitoring devices for the power transmission network. This report also discusses methods implemented to harness electromagnetic energy and improvements that could increase the effectiveness of this approach. In conclusion, the user would be able to understand the process of harnessing electromagnetic energy and then converting it into electrical energy.