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| Wide area measurement-based approach for assessing the power flow influence on inter-area oscillations | |
| Antoine;Olivier | |
| 出版年 | 2013 |
| 学位授予单位 | Universite Libre de Bruxelles, Université libre de Bruxelles, Ecole polytechnique de Bruxelles – Electricien, Bruxelles |
| 英文摘要 | Power systems have been historically designed at a time when the production was centralized and the electricity had to be transmitted to the loads from the closest power plant. Nowadays, there is an increasing integration of decentralized and intermittent pro- duction. Moreover, the energy market coupling has enabled the transfer of electric power for economical purposes. Also, former isolated power systems are now interconnected for reliability and financial reasons. All of these changes make difficult to predict the future behavior of the grid. Studies are done in order to plan for the future needs of the system. However, building new in- frastructures takes time and it is expected that these needs will not be completely fulfilled in all the parts of the grid. Therefore, transmission of active power could be limited by the existing infrastructure. For example, the presence of inter-area oscillations is often the limiting factor when a high active power is transmitted on a long transmission line between two groups of generators. Since higher levels of active power are exchanged on longer distances, problems of inter-area oscillations may arise in power systems previously not affected by this phenomenon. In this work, a measurement-based approach, able to predict in the short-term the future behavior of oscillations, is presented. This approach is complementary to the long-term planning of the grid. The mandatory first step towards a measurement-based approach is to have the ability to extract useful information among a huge quantity of data. To face this issue, some comparisons of data mining algorithms are performed. The proposed method combines two decision tree algorithms to obtain both prediction accuracy and comprehensibility. The second required step for building a measurement-based model is to take into account the limitations of the measurements. Two types of wide area measurements are used, synchronized measurements from PMUs and traditional unsynchronized data from the SCADA/EMS system. Oscillation monitoring using PMUs is especially of interest and an approach is presented to post-process damping estimates. This post-processing method consists in a noise reduction technique followed by a damping change detection algorithm. Finally, the method, combining these two steps, is implemented to analyze the Con- tinental European grid. This implementation takes place in the context of the European project Twenties. The results, using several months of measurements, are described in detail before being discussed. Doctorat en Sciences de l'ingénieur info:eu-repo/semantics/nonPublished |
| 英文关键词 | Electricité Electric power transmission Oscillators Electric Electricité -- Transport Oscillateurs Power system Power system operation Small-signal stability System identification Data mining |
| 语种 | 英语 |
| URL | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209368 |
| 来源机构 | Universite Libre de Bruxelles, Université libre de Bruxelles, Ecole polytechnique de Bruxelles – Electricien, Bruxelles |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/247277 |
| 推荐引用方式 GB/T 7714 | Antoine;Olivier. Wide area measurement-based approach for assessing the power flow influence on inter-area oscillations[D]. Universite Libre de Bruxelles, Université libre de Bruxelles, Ecole polytechnique de Bruxelles – Electricien, Bruxelles,2013. |
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