Testing of Current-Only Directional Relay Algorithm in a Realistic Distribution Network Testbed

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dc.contributor.authorVivent Barahona, Francisco Javieren
dc.contributor.committeechairCenteno, Virgilio A.en
dc.contributor.committeememberKekatos, Vasileiosen
dc.contributor.committeememberDe La Reelopez, Jaimeen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2023-08-31T08:00:27Zen
dc.date.available2023-08-31T08:00:27Zen
dc.date.issued2023-08-30en
dc.description.abstractThe growth of Distributed Energy Resources is accelerating, causing significant changes in utility distribution systems due to the bidirectionality of power flow. As a result, protection systems will require upgrades to operate with these new requirements. The current-only directional relay (CODR) is a novel proposal that detects the direction of fault currents without the need for new devices, but instead upgrades the software logic of existing devices, making it a cost-effective solution. This work provides a complete description of how to implement a hardware testbed to review the CODR method. Findings show that CODR performs successfully in a real environment, but its algorithm needs to be upgraded if used in distribution systems where lines have a non-negligible resistive component.en
dc.description.abstractgeneralThe use of renewable energy sources, such as solar panels and wind turbines, is growing rapidly. This is causing changes in the way electricity is distributed, as power can now flow in both directions. To keep up with these changes, the systems that protect the electricity grid need to be updated. One cost-effective solution is to use a new type of relay, called the current-only directional relay (CODR), which can detect the direction of fault currents without the need for new devices. This work describes how to test the CODR method using a hardware testbed. The results show that the CODR performs well in a real environment, but its algorithm needs to be updated for use in certain types of distribution systems.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:38417en
dc.identifier.urihttp://hdl.handle.net/10919/116170en
dc.language.isoenen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectHardware testbeden
dc.subjectovercurrent directional relayen
dc.subjectDER integrationen
dc.subjectphasor estimationen
dc.titleTesting of Current-Only Directional Relay Algorithm in a Realistic Distribution Network Testbeden
dc.typeThesisen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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