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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/F2A4F43B-F121-40C4-99B1-1C864A56652B | ||
| Year | 2024 | ||
| Type of Item | Doctoral Dissertation | ||
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| Bibliographic Citation | Ioannis Syllignakis, "Optimal design of electric power systems with direct current interconnections and large penetration of renewable energy sources.", Doctoral Dissertation, School of Production Engineering and Management, Technical University of Crete, Chania, Greece, 2024 https://doi.org/10.26233/heallink.tuc.101877 | ||
| Appears in Collections |
Electric power systems are dynamicaly and constantly developing. On the one hand, their interconnections, on the other, new control technologies at all levels (production, transmission and distribution), constantly change the needs for their study and development planning. Towards this direction, simulation software has been developed to take into account the new developments. Most applications are commercial, and make use of models of network components, that are either not open to the user or standardized. The motivation of this thesis is the development of the required modeling methodology and suitable open source software, for the study and optimal design of electric power systems with HVDC interconnections with significant power production by renewable energy sources (RES). In this thesis, existing software (MATLAB MATPOWER, MATDYN) were used and additional models were developed for HVDC converters, DC transmission lines and RES units etc. These models can be easily modified according to the needs of the study. For optimization purposes, the PSO method was used, after all necessary modifications. Important addition to the proposed method is the incorporation of short-term transient stability criteria into the optimization process. By adopting voltage and frequency instability criteria, the optimal solutions of the examined optimization problems are examined for selected case studies under the presence of significant faults. Such faults are short circuits, line breaks, loss of production (conventional power unit trip). The methodology was tested on appropriately modified standard networks such as the IEEE 9-bus, IEEE-24bus and thesimplified system of continental Greece-Crete-Cyprus. A suitable, friendly graphical user interface for the developed models was also created in the framework of this thesis.
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