Conference paper
Design & Evaluation of a Protection Algorithm for a Wind Turbine Generator based on the fault-generated Symmetrical Components
Jeonbuk National University1
Electric Energy Systems, Department of Electrical Engineering, Technical University of Denmark2
Department of Electrical Engineering, Technical University of Denmark3
University of Manchester4
Centre for Electric Technology, Centers, Technical University of Denmark5
A protection relay for a wind turbine generator (WTG) based on the fault-generated symmetrical components is proposed in the paper. At stage 1, the relay uses the magnitude of the positive-sequence component in the fault current to distinguish faults on a parallel WTG, connected to the same feeder, or on an adjacent feeder from those on the connected feeder, on the collection bus, at an inter-tie or at a grid.
For the former faults, the relay should remain stable and inoperative whilst the instantaneous or delayed tripping is required for the latter faults. At stage 2, the fault type is first evaluated using the relationships of the fault-generated symmetrical components. Then, the magnitude of the positive-sequence component in the fault current is used again to decide on either instantaneous or delayed operation.
The operating performance of the relay is then verified using various fault scenarios modelled using EMTPRV. The scenarios involve changes in the position and type of fault, and the faulted phases. Results confirm that the relay can successfully distinguish between faults that require an instantaneous, delayed or non-operation response.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2011 |
| Pages: | 1-6 |
| Proceedings: | 2011 IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies |
| ISBN: | 1457714205 , 1457714213 , 1457714221 , 9781457714207 , 9781457714214 and 9781457714221 |
| ISSN: | 21654824 and 21654816 |
| Types: | Conference paper |
| DOI: | 10.1109/ISGTEurope.2011.6162776 |
Delayed operation Instantaneous operation Non-operation Outage section minimization Wind turbine generator protection
AC generators Circuit faults EMTP-RV Educational institutions Fault currents Generators Power transformer insulation Relays WTG Wind farms adjacent feeder delayed tripping fault current fault-generated symmetrical components positive-sequence component power generation faults power generation protection power grids protection algorithm relay protection wind turbine generator wind turbines
