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JEET, Vol. 13, No. 5, September 2018
Fuzzy Control Strategy for Damping Sub-Synchronous Resonance
M. R. Qader
Area A - Electric Power Engineering
Abstract Sub-Synchronous Resonance (SSR) is a phenomenon that harms turbine generator shafts because the phenomenon induces sub-synchronous wavering in the system. In the study presented in this paper, a dynamic resistance bank is used to mitigate the occurrence of sub-synchronous phenomenon. A fuzzy logic controller using rotor speed deviation and its derivative as inputs is implemented to damp sub-synchronous oscillations more efficiently. An eigenvalue technique is used to analyse the stability of the system, and a simulation in MATLAB is conducted, based on the IEEE Second Benchmark, to validate the effectiveness of the proposed method under a 3-phase fault condition at an infinite bus. The time-domain simulation and eigenvalues are used to observe the proposed methods superior ability to damp sub-synchronous oscillation.
Keyword Sub-Synchronous Resonance (SSR),FLDC,FLC,Fuzzy controller strategy,Dynamic resistance.
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