Thesis /

ROMDOC-THESIS-2017-898

Evitarea apariţiei avariilor extinse în sistemele electroenergetice interconectate prin utilizarea dispozitivelor FACTS

Ciauşiu, Florin E
2011-11-29

Abstract: The present work aims to propose a methodology for quantifying the risk of a blackout in the interconnected and large power systems. Another objective is represented by highlighting the possibility of reducing/mitigate the risk of a blackout when using FACTS devices. Therefore in this work the link between blackout and stability limits of a power system is demonstrated and as a criterion of quantifying the risk of a blackout the identification of the steady-state stability limits is proposed. Usually when dealing with large power system models the analysis of the steady-state stability limits by using the classical method of the steady-state matrix obtained by system linearization is not possible. Thus this work is proposing a new methodology for steady-state analysis and transient analysis of a power system so called Time Domain Analysis, which was developed using PSA/EUROSTAG software tool. This methodology enables the use of a power system model close to the real one without being necessary to reduce the system by equivalence of the steady-state model or of the dynamic model. On the other hand proposed approach is providing the results of the simulations in such way to satisfy the requests of the TSO (identification of the steady-state stability limit power transfers, of the maximum allowable power transfers and of the power transfers with stability reserve). A methodology to choose between different locations for SVC and UPFC devices is also proposed by looking at the gains of steady-state stability reserves. To analyze the proposed methodology, MATLAB functions were created for steady-state stability analysis using the reduced Jacobian matrix of the system in order to find out the participation factors of the nodes for V-Q oscillation modes, and the participation factors of the lines for -P oscillation modes. Keywords: blackout, steady-state stability limits, FACTS, participation factors, modal analysis, stability reserves

Keyword(s): Sisteme electroenergetice -- Fiabilitate -- Teză de doctorat ; Electricitate -- Transport -- Teză de doctorat ; Electronică de putere -- Teză de doctorat ; Dispozitive FACTS -- Teză de doctorat
OPAC: See record in BC-UPB Web OPAC
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