Fault isolation in distributed generation connected distribution networks
Protection of a distribution network in the presence of distributed generators (DGs) using overcurrent relays is a challenging task because of the changes in fault current levels and reverse power flow. Specifically, in the presence of current limited converter interfaced DGs, overcurrent relays may...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
The Institution of Engineering and Technology
2011
|
| Online Access: | http://hdl.handle.net/20.500.11937/4239 |
| _version_ | 1848744459741691904 |
|---|---|
| author | Dewadasa, M. Ghosh, Arindam Ledwich, G. Wishart, M. |
| author_facet | Dewadasa, M. Ghosh, Arindam Ledwich, G. Wishart, M. |
| author_sort | Dewadasa, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Protection of a distribution network in the presence of distributed generators (DGs) using overcurrent relays is a challenging task because of the changes in fault current levels and reverse power flow. Specifically, in the presence of current limited converter interfaced DGs, overcurrent relays may fail to isolate the faulted section either in grid connected or islanded mode of operation. In this study, a new inverse-type relay is presented to protect a distribution network, which may have several DG connections. The new relay characteristic is designed based on the measured admittance of the protected line. The relay is capable of detecting faults under changing fault current levels. The relay performance is evaluated using PSCAD simulation and laboratory experiments. |
| first_indexed | 2025-11-14T06:01:48Z |
| format | Journal Article |
| id | curtin-20.500.11937-4239 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:01:48Z |
| publishDate | 2011 |
| publisher | The Institution of Engineering and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-42392017-02-28T01:28:39Z Fault isolation in distributed generation connected distribution networks Dewadasa, M. Ghosh, Arindam Ledwich, G. Wishart, M. Protection of a distribution network in the presence of distributed generators (DGs) using overcurrent relays is a challenging task because of the changes in fault current levels and reverse power flow. Specifically, in the presence of current limited converter interfaced DGs, overcurrent relays may fail to isolate the faulted section either in grid connected or islanded mode of operation. In this study, a new inverse-type relay is presented to protect a distribution network, which may have several DG connections. The new relay characteristic is designed based on the measured admittance of the protected line. The relay is capable of detecting faults under changing fault current levels. The relay performance is evaluated using PSCAD simulation and laboratory experiments. 2011 Journal Article http://hdl.handle.net/20.500.11937/4239 The Institution of Engineering and Technology restricted |
| spellingShingle | Dewadasa, M. Ghosh, Arindam Ledwich, G. Wishart, M. Fault isolation in distributed generation connected distribution networks |
| title | Fault isolation in distributed generation connected distribution networks |
| title_full | Fault isolation in distributed generation connected distribution networks |
| title_fullStr | Fault isolation in distributed generation connected distribution networks |
| title_full_unstemmed | Fault isolation in distributed generation connected distribution networks |
| title_short | Fault isolation in distributed generation connected distribution networks |
| title_sort | fault isolation in distributed generation connected distribution networks |
| url | http://hdl.handle.net/20.500.11937/4239 |