Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids
The fault level is used as a simple indicator for scanning the system strength in power systems. To an extent, this has proven its efficacy in classical power systems based on synchronous generation (SG). However, power electronics-based renewable energy sources (RESs), due to their controlled and l...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/1/142 |
| _version_ | 1797626325181136896 |
|---|---|
| author | Rafat Aljarrah Mazaher Karimi Hesamoddin Marzooghi Sahban Alnaser Murad Al-Omary Qusay Salem Salman Harasis |
| author_facet | Rafat Aljarrah Mazaher Karimi Hesamoddin Marzooghi Sahban Alnaser Murad Al-Omary Qusay Salem Salman Harasis |
| author_sort | Rafat Aljarrah |
| collection | DOAJ |
| description | The fault level is used as a simple indicator for scanning the system strength in power systems. To an extent, this has proven its efficacy in classical power systems based on synchronous generation (SG). However, power electronics-based renewable energy sources (RESs), due to their controlled and limited fault current contribution, may affect the impedance, fault level, and system strength in a non-linear manner. Hence, this raises a question about the validity of using the fault level as a measure reflecting the system strength in future grids. This paper intends to shed light on the above question by examining the correlation between the fault level and the system strength in future grid scenarios. This is achieved in two steps: first, by employing the measure-based Thevenin impedance for fault level estimation in renewable-rich grids, and second, by comparing these estimated fault levels with those obtained from steady-state and dynamic simulations. While the results have demonstrated the suitability of using the fault level for system strength scanning in scenarios of low penetration of RESs, they revealed that such a tool might be misleading with very high RES penetrations. The findings have been verified using the adjusted IEEE nine-bus test system in DIgSILENT PowerFactory. |
| first_indexed | 2024-03-11T10:08:48Z |
| format | Article |
| id | doaj.art-5aee8a257af64554b0f46c80155d2efd |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T10:08:48Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-5aee8a257af64554b0f46c80155d2efd2023-11-16T14:51:16ZengMDPI AGApplied Sciences2076-34172022-12-0113114210.3390/app13010142Relationship between Fault Level and System Strength in Future Renewable-Rich Power GridsRafat Aljarrah0Mazaher Karimi1Hesamoddin Marzooghi2Sahban Alnaser3Murad Al-Omary4Qusay Salem5Salman Harasis6Electrical Engineering Department, Princess Sumaya University for Technology, Amman 11942, JordanSchool of Technology and Innovations, University of Vaasa, FI-65200 Vaasa, FinlandTeam Leader Power Systems Studies, Power Systems Consultants Australia Pty Ltd. (PSC), 3 Spring Street, Sydney, NSW 2000, AustraliaDepartment of Electrical Engineering, The University of Jordan, Amman 11942, JordanEnergy Engineering Department, German Jordanian University, Amman 11180, JordanElectrical Engineering Department, Princess Sumaya University for Technology, Amman 11942, JordanElectrical Power and Mechatronics Engineering Department, Tafila Technical University, Tafila 66110, JordanThe fault level is used as a simple indicator for scanning the system strength in power systems. To an extent, this has proven its efficacy in classical power systems based on synchronous generation (SG). However, power electronics-based renewable energy sources (RESs), due to their controlled and limited fault current contribution, may affect the impedance, fault level, and system strength in a non-linear manner. Hence, this raises a question about the validity of using the fault level as a measure reflecting the system strength in future grids. This paper intends to shed light on the above question by examining the correlation between the fault level and the system strength in future grid scenarios. This is achieved in two steps: first, by employing the measure-based Thevenin impedance for fault level estimation in renewable-rich grids, and second, by comparing these estimated fault levels with those obtained from steady-state and dynamic simulations. While the results have demonstrated the suitability of using the fault level for system strength scanning in scenarios of low penetration of RESs, they revealed that such a tool might be misleading with very high RES penetrations. The findings have been verified using the adjusted IEEE nine-bus test system in DIgSILENT PowerFactory.https://www.mdpi.com/2076-3417/13/1/142fault levelsystem strengthThevenin impedancerenewable energy sources |
| spellingShingle | Rafat Aljarrah Mazaher Karimi Hesamoddin Marzooghi Sahban Alnaser Murad Al-Omary Qusay Salem Salman Harasis Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids Applied Sciences fault level system strength Thevenin impedance renewable energy sources |
| title | Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids |
| title_full | Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids |
| title_fullStr | Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids |
| title_full_unstemmed | Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids |
| title_short | Relationship between Fault Level and System Strength in Future Renewable-Rich Power Grids |
| title_sort | relationship between fault level and system strength in future renewable rich power grids |
| topic | fault level system strength Thevenin impedance renewable energy sources |
| url | https://www.mdpi.com/2076-3417/13/1/142 |
| work_keys_str_mv | AT rafataljarrah relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT mazaherkarimi relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT hesamoddinmarzooghi relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT sahbanalnaser relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT muradalomary relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT qusaysalem relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids AT salmanharasis relationshipbetweenfaultlevelandsystemstrengthinfuturerenewablerichpowergrids |