Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis
The increasing penetration of the renewable energy has increased the risks of sub/super synchronous oscillations in power systems. Therefore, it is critical to accurately evaluate the oscillatory stability of renewable power systems ensuring the safe and stable operation of the systems. In this pape...
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Editorial Office of Journal of Shanghai Jiao Tong University
2025-06-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
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| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-6-821.shtml |
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| author | GAO Lei, MA Junchao, LÜ Jing, LIU Jianing, WANG Chenxu, CAI Xu |
| author_facet | GAO Lei, MA Junchao, LÜ Jing, LIU Jianing, WANG Chenxu, CAI Xu |
| author_sort | GAO Lei, MA Junchao, LÜ Jing, LIU Jianing, WANG Chenxu, CAI Xu |
| collection | DOAJ |
| description | The increasing penetration of the renewable energy has increased the risks of sub/super synchronous oscillations in power systems. Therefore, it is critical to accurately evaluate the oscillatory stability of renewable power systems ensuring the safe and stable operation of the systems. In this paper, a method for evaluating the oscillatory stability of renewable power systems based on frequency-domain modal analysis is investigated. First, the frequency-domain impedance or admittance models of key equipment and stations are established, including the renewable power generators and stations, transmission lines, synchronous generators, transformers, etc. Next, a system-level frequency-domain network model is constructed based on the actual system topology. Then, the oscillatory stability of the renewable power system is evaluated by solving the zeros of the determinant of the loop impedance matrix or the node admittance matrix of the system. The weak points of the system are identified using the participated matrix of the weak oscillation mode, which provides reference for implementation of oscillation suppression measures. Taking the practical renewable power system in East China as an example, the oscillatory stability of the system considering the varying access capacity of renewables under different grid operating conditions is assessed using the frequency-domain modal analysis method. Finally, the time-domain simulation model of the actual renewable power system is built in PSCAD/EMTDC to verify the theoretical analysis. |
| format | Article |
| id | doaj-art-3d8ff8a521f44a95a9b8f5322e2eec2b |
| institution | Matheson Library |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-3d8ff8a521f44a95a9b8f5322e2eec2b2025-07-04T11:26:38ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672025-06-0159682183510.16183/j.cnki.jsjtu.2023.358Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal AnalysisGAO Lei, MA Junchao, LÜ Jing, LIU Jianing, WANG Chenxu, CAI Xu01. Key Laboratory of Control of Power Transmission and Conversion of the Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China;2. State Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaThe increasing penetration of the renewable energy has increased the risks of sub/super synchronous oscillations in power systems. Therefore, it is critical to accurately evaluate the oscillatory stability of renewable power systems ensuring the safe and stable operation of the systems. In this paper, a method for evaluating the oscillatory stability of renewable power systems based on frequency-domain modal analysis is investigated. First, the frequency-domain impedance or admittance models of key equipment and stations are established, including the renewable power generators and stations, transmission lines, synchronous generators, transformers, etc. Next, a system-level frequency-domain network model is constructed based on the actual system topology. Then, the oscillatory stability of the renewable power system is evaluated by solving the zeros of the determinant of the loop impedance matrix or the node admittance matrix of the system. The weak points of the system are identified using the participated matrix of the weak oscillation mode, which provides reference for implementation of oscillation suppression measures. Taking the practical renewable power system in East China as an example, the oscillatory stability of the system considering the varying access capacity of renewables under different grid operating conditions is assessed using the frequency-domain modal analysis method. Finally, the time-domain simulation model of the actual renewable power system is built in PSCAD/EMTDC to verify the theoretical analysis.https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-6-821.shtmlrenewable power systemoscillatory stabilityfrequency-domain networkfrequency-domain modal analysisstability assessmentweak point location |
| spellingShingle | GAO Lei, MA Junchao, LÜ Jing, LIU Jianing, WANG Chenxu, CAI Xu Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis Shanghai Jiaotong Daxue xuebao renewable power system oscillatory stability frequency-domain network frequency-domain modal analysis stability assessment weak point location |
| title | Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis |
| title_full | Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis |
| title_fullStr | Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis |
| title_full_unstemmed | Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis |
| title_short | Oscillatory Stability Assessment of Renewable Power Systems Based on Frequency-Domain Modal Analysis |
| title_sort | oscillatory stability assessment of renewable power systems based on frequency domain modal analysis |
| topic | renewable power system oscillatory stability frequency-domain network frequency-domain modal analysis stability assessment weak point location |
| url | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-6-821.shtml |
| work_keys_str_mv | AT gaoleimajunchaolujingliujianingwangchenxucaixu oscillatorystabilityassessmentofrenewablepowersystemsbasedonfrequencydomainmodalanalysis |