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SELECTION THE BEST CONTROL CHANNEL FOR SSSC STABILIZER TO DAMP INTER-AREA OSCILLATION CONSIDERING NON-LINEARITY EFFECTS | ||
| Iranian Journal of Science and Technology Transactions of Electrical Engineering | ||
| شناسنامه علمی شماره، دوره 36، شماره 2، اسفند 2012، صفحه 189-206 اصل مقاله (527.76 K) | ||
| شناسه دیجیتال (DOI): 10.22099/ijste.2012.1516 | ||
| چکیده | ||
| Abstract– Modal interaction noticeably affects the dynamic behavior of a stressed power system with heavy loading. In this paper, Modal Series (MS) as a method to analyze modal interactions is extended for a power system installed with a static synchronous series compensator (SSSC) stabilizer. The - based and m-based stabilizers as two stabilizers in different control channels are presented for a SSSC. The parameters of the stabilizers are calculated by a quadratic mathematical programming method. In this procedure, the gain and the phase of a stabilizer are calculated simultaneously. A particular measure of stabilizer gain is considered as an objective function. The effects of SSSC based stabilizers on damping inter-area oscillations for a small disturbance are studied and compared. Modal interactions between an inter-area mode and control modes related to SSSC stabilizers are studied by a proposed index based on MS method in a 4-machine stressed power system. Oscillatory instability caused by modal interactions is investigated and compared in the system for both SSSC stabilizers. | ||
| کلیدواژهها | ||
| Keywords– Inter-area oscillations؛ static synchronous series compensator (SSSC)؛ damping stabilizer؛ nonlinear modal interactions؛ stressed power systems | ||
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