Master Thesis - Implementation of online fault location
It is becoming more common to place large offshore wind farms further and further away from the grid connection point.
Overall project description
It is becoming more common to place large offshore wind farms further and further away from the grid connection point. This is partly due to longer distances offshore, but also often due to longer distances onshore.
When wind farms are placed further away from the grid connection point, the cables become much longer and more vulnerable for faults. Also, when long single phase onshore cables are used, it becomes more difficult to locate faults, occurring some years after the cables have been put into operation.
A recent PhD study has shown a new improved online method for locating faults on cables. This study, "Online Location of Faults on AC Cables in Underground Transmission Systems”, Christian Flytkjær Jensen, 2013, has also made a verification of the method by measurements on an underground cable for the Anholt Offshore Wind Farm.
Although this method has been analysed and tested, a comprehensive review of the method is needed, as well as a simulation test on a DONG Energy export cable wind farm connection. To ensure implementation, a thorough analysis of theoretical and practical issues related to implementation, such as GPS accuracy testing and testing on equipment availability for placement both offshore and onshore is required.
Detailed project description
The main goal of the project is to develop a practical implementation for an on-line fault location on export cables for offshore wind farms.
The project is expected to:
- review constrains and available information
- review the online fault location method
- test the method on a full export cable system combining onshore and offshore cables with only a transition joint
- analyse the sensitivity and accuracy of commercially available equipment
- set up a recommendation for a full practical implementation of a fault location system on a long export cable system for an offshore wind farm.
Category:
Cable systems
Project type:
Master of science thesis project
Number of students:
One or two
Department:
HV Cables
Contact us
Please do not hesitate to contact windthesis@dongenergy.dk if you have further questions.
We look forward to receiving your application as electronic files by 15 June 2015.
Please write in your application that you've seen the job at Jobfinder