Abstract
Recently, power systems are being operated under increasingly stressed conditions, and the ability to maintain the system stability becomes an extremely critical concern. A Superconducting Generator (SCG) can be one of the ways to obtain higher stabilities, higher power density and higher efficiencies in the near future power systems. In this paper, SCG with high response excitation, which is indicated to have the potential of improving the system stability by its SMES (Superconducting Magnetic Energy Storage) effect, is studied by conducting digital simulation. A SCG model taking consideration of its detailed generator excitation circuits that influences considerably the SMES effect is proposed and completed in this work, and the excitation characteristics of SCG with high response excitation are investigated and clarified. The Simulation results have verified the SMES effect and revealed the reason why this effect can be obtained, furthermore, the influence on power system stability of SCG and the impact of its control system on its stability enhancement have been studied as well.
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