A Novel Energy Function-Based Stability Evaluation and Nonlinear Control Approach for Energy Internet
- 23 November 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Smart Grid
- Vol. 8 (3), 1195-1210
- https://doi.org/10.1109/tsg.2015.2497691
Abstract
Unlike conventional interconnected power systems, energy Internet presents an unsolved and more challenging problem for the society including transfer impedance, damping, large penetration of distributed generation, and numerous hybrid integration of generators and converters. In this paper, a novel energy function designed for energy internet router is proposed to accurately evaluate its transfer stability. The reliability of the proposed energy function is confirmed through both theoretical analysis and empirical simulations. Furthermore, generalized methods to determine critical stable energy, stable domain, and critical clearing time are proposed. By updating stability criterion and evaluating system energy of post-disturbance system, fault energy-based impulsive feedback control method is specifically designed for energy Internet to stabilize the system. Simulation and experimental results are provided to validate the effectiveness of the proposed energy function and nonlinear control method.Keywords
Funding Information
- National Natural Science Foundation of China (NSFC) Key Program (61573094, 61034005, 51529701)
- Fundamental Research Funds for the Central Universities (N140402001)
- NSFC Young Scientists Fund (61203086)
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