Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency
Protection coordination is typically approached considering the main network configuration. Nevertheless, contingencies such as generator or line failures may disrupt power grids. Low fault currents in inverter-based isolated microgrids adversely impact the conventional overcurrent protection scheme...
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Elsevier
2024-02-01
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| Series: | International Journal of Electrical Power & Energy Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061523008074 |
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| author | Talal Elemamali Sati Maher A. Azzouz Mostafa F. Shaaban |
| author_facet | Talal Elemamali Sati Maher A. Azzouz Mostafa F. Shaaban |
| author_sort | Talal Elemamali Sati |
| collection | DOAJ |
| description | Protection coordination is typically approached considering the main network configuration. Nevertheless, contingencies such as generator or line failures may disrupt power grids. Low fault currents in inverter-based isolated microgrids adversely impact the conventional overcurrent protection schemes. This paper proposes a sensitive and selective protection scheme for isolated microgrids using an adaptive third harmonic voltage generated by inverter-based distributed generators (IBDGs) and adapted to fault severity. The generated harmonic voltage results in a harmonic layer established during faults and is decoupled from the fundamental fault current, which is limited by IBDGs. Harmonic directional overcurrent relays sense the generated harmonic currents and voltages at the relay location to ensure optimal protection coordination (OPC). The OPC problem is formulated as a constrained nonlinear program to determine the optimal relays’ settings. The constraints are defined for the isolated configuration and each potential configuration resulting from an N-1 contingency. A radial microgrid that is part of a Canadian urban distribution network is used to ensure the successful operation of the proposed protection scheme. The results demonstrate the ability of the proposed scheme to protect isolated microgrids and preserve protection coordination without communication. |
| format | Article |
| id | doaj-art-bbbf1b64009942a2922c5a4ab633f16a |
| institution | Kabale University |
| issn | 0142-0615 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-bbbf1b64009942a2922c5a4ab633f16a2024-11-25T04:40:42ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152024-02-01156109750Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingencyTalal Elemamali Sati0Maher A. Azzouz1Mostafa F. Shaaban2Department of Electrical and Computer Engineering, University of Windsor, Windsor, N9B 3P4, ON, Canada; Corresponding author.Electrical Engineering Department, Qatar University, PO Box: 2713, Doha, QatarDepartment of Electrical Engineering, American University of Sharjah, PO Box: 26666, Sharjah, United Arab EmiratesProtection coordination is typically approached considering the main network configuration. Nevertheless, contingencies such as generator or line failures may disrupt power grids. Low fault currents in inverter-based isolated microgrids adversely impact the conventional overcurrent protection schemes. This paper proposes a sensitive and selective protection scheme for isolated microgrids using an adaptive third harmonic voltage generated by inverter-based distributed generators (IBDGs) and adapted to fault severity. The generated harmonic voltage results in a harmonic layer established during faults and is decoupled from the fundamental fault current, which is limited by IBDGs. Harmonic directional overcurrent relays sense the generated harmonic currents and voltages at the relay location to ensure optimal protection coordination (OPC). The OPC problem is formulated as a constrained nonlinear program to determine the optimal relays’ settings. The constraints are defined for the isolated configuration and each potential configuration resulting from an N-1 contingency. A radial microgrid that is part of a Canadian urban distribution network is used to ensure the successful operation of the proposed protection scheme. The results demonstrate the ability of the proposed scheme to protect isolated microgrids and preserve protection coordination without communication.http://www.sciencedirect.com/science/article/pii/S0142061523008074MicrogridInverter-based distributed generatorsProtection coordinationHarmonic injection |
| spellingShingle | Talal Elemamali Sati Maher A. Azzouz Mostafa F. Shaaban Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency International Journal of Electrical Power & Energy Systems Microgrid Inverter-based distributed generators Protection coordination Harmonic injection |
| title | Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency |
| title_full | Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency |
| title_fullStr | Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency |
| title_full_unstemmed | Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency |
| title_short | Adaptive harmonic-based protection coordination for inverter-dominated isolated microgrids considering N-1 contingency |
| title_sort | adaptive harmonic based protection coordination for inverter dominated isolated microgrids considering n 1 contingency |
| topic | Microgrid Inverter-based distributed generators Protection coordination Harmonic injection |
| url | http://www.sciencedirect.com/science/article/pii/S0142061523008074 |
| work_keys_str_mv | AT talalelemamalisati adaptiveharmonicbasedprotectioncoordinationforinverterdominatedisolatedmicrogridsconsideringn1contingency AT maheraazzouz adaptiveharmonicbasedprotectioncoordinationforinverterdominatedisolatedmicrogridsconsideringn1contingency AT mostafafshaaban adaptiveharmonicbasedprotectioncoordinationforinverterdominatedisolatedmicrogridsconsideringn1contingency |