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Energies 2018, 11(3), 597; https://doi.org/10.3390/en11030597

An Input-to-State Stability-Based Load Restoration Approach for Isolated Power Systems

1
State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Electric Power Dispatching and Control Center of Guangdong Power Grid Co., Ltd., Guangzhou 510600, China
3
The School of Electrical & Information Engineering, University of Sydney, Sydney, NSW 2006, Australia
4
Centre for Distributed and High Performance Computing, School of Information Technologies, The University of Sydney, Sydney, NSW 2006, Australia
*
Author to whom correspondence should be addressed.
Received: 3 February 2018 / Revised: 26 February 2018 / Accepted: 6 March 2018 / Published: 8 March 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

An isolated power system (IPS) is usually operated under a bad environment and is influenced by external disturbances. Advanced load restoration technology is an important way to enhance the survivability and reliability of IPS. This paper proposes a fast load restoration approach based on Input-to-State Stability (ISS) theory for IPS. The method can recover load after an outage happens in an IPS under severe perturbations. In the proposed restoration approach, both stability and security constraints are considered based on the ISS theory, which can guarantee the stable and secure operation of IPS during the restoration dynamic process. These constraints have good adaptability for topology transformation and operation status transition of IPS. A heuristic approach to efficiently solve the load restoration problem is proposed, where bisection search is used to check the feasibility of the loads to be restored. Case studies on a typical IPS are used to verify the proposed method. View Full-Text
Keywords: isolated power systems; input-to-state stability theory; small gain condition; stability criterion; load restoration isolated power systems; input-to-state stability theory; small gain condition; stability criterion; load restoration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Qin, B.; Gao, H.; Ma, J.; Li, W.; Zomaya, A.Y. An Input-to-State Stability-Based Load Restoration Approach for Isolated Power Systems. Energies 2018, 11, 597.

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