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Decomposed input-output stability analysis and enhancement of integrated power systems

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Abstract

The integrated power system (IPS) is a foundation of all-electrical ships and vessels. The stability of IPS becomes a prerequisite of complicated cruise tasks. Thus, advanced stability analysis and regulation methods for IPS are of great importance. In this paper, a novel method is proposed for analyzing and enhancing transient stability of IPS, which is regarded as a cyber-physical system comprising of subsystems and connections. Criterions for determining input-output stability of such a system are firstly derived. Then, the stability analysis of IPS can be performed in the following two steps: 1) evaluating local input-output stability features of each subsystem independently through simulations. 2) Checking stability criterions with system topology and subsystem stability features. Moreover, synthetic approaches are proposed for stabilization and stability enhancement of IPS. To avoid system in-stability after major failures or topology changes, the optimal emergency control is performed to reconfigure subsystems. The other optimal regulation is used to strengthen system stability by adjusting subsystems’ control parameters during normal operation conditions. Case studies on a typical IPS validate the proposed stability analysis and enhancement approach.

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Authors and Affiliations

  1. Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China

    Fan Li, Ying Chen & Chen Shen

  2. State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

    BoYu Qin

Authors
  1. Fan Li
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  2. Ying Chen
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  3. BoYu Qin
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  4. Chen Shen
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Correspondence to BoYu Qin.

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Li, F., Chen, Y., Qin, B. et al. Decomposed input-output stability analysis and enhancement of integrated power systems. Sci. China Technol. Sci. 61, 427–437 (2018). https://doi.org/10.1007/s11431-017-9118-3

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  • DOI: https://doi.org/10.1007/s11431-017-9118-3

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