Application of Coordinated SOFC and SMES Robust Control for Stabilizing Tie-Line Power

Ning Zhang, Wei Gu, Haojun Yu and Wei Liu
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Ning Zhang: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Wei Gu: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Haojun Yu: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Wei Liu: School of Electrical Engineering, Southeast University, Nanjing 210096, China

Energies, 2013, vol. 6, issue 4, 1-16

Abstract: Wind power causes fluctuations in power systems and introduces issues concerning system stability and power quality because of the lack of controllability of its discontinuous and intermittent resources. This paper presents a coordinated control strategy for solid oxide fuel cells (SOFCs) and superconducting magnetic energy storage (SMES) to match the intermittent wind power generation and compensate for the rapid load changes. An optimal H? control method, where the weighting function selection is expressed as an optimization problem, is proposed to mitigate tie-line power fluctuations and the mixed-sensitivity approach is used to deal with the interference suppression. Simulation results show that the proposed method significantly improves the smoothing effect of wind power fluctuations. Compared with the conventional control method, the proposed method has better anti-interference performance in various operating situations.

Keywords: H? optimal control; microgrid; solid oxide fuel cell; superconducting magnetic energy storage; mixed-sensitivity problem; particle swarm optimization (PSO) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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