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Synchronous power controller merits for dynamic stability improvement in long line by renewables

Growing universal demand for greater use of renewable energy resources (RES) installed in dispersed location, has caused to more urgent need for long transmission systems to use these green sources. Small signal stability is one of vital challenges for transmission system operators in presence of big RES. In this paper, a Static Synchronous Generators based in Synchronous Power Controller (SSG-SPC) is presented and its capabilities for dynamic stability enhancement in a long AC transmission system is investigated. Dynamic modelling of a long line and then study in Uncompensated and Compensated cases by using time domain simulation and modal analysis, and then experimental test confirms that SSG-SPC can be effective in active damping of power oscillations and reducing small signal stability challenges.