Dual-Slope Percentage Bias Differential Relay (87) Protection Strategy for 11kV Underground Power Cable
The study focuses on the protection strategy for an underground power cable (transmission) for a medium voltage distribution network using dual slope percentage bias differential relay (ANSI 87). The underground cable is the bridge that connects the power supply from generator to distribution substations, it must be well protected from internal fault that may cause insulation breakdown and leads to electrical failure; while remain unaffected for external fault conditions. The fault simulation is done with PSCAD software, and the suitable protection settings for the applied differential relay is proposed. The study found that the relay is stable for external faults while allowing sensitive settings to pick up internal fault if the setting was carefully chosen.
How to Cite
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).