Phase Synchronization Stability of Non-Homogeneous Low-Voltage Distribution Networks with Large-Scale Distributed Generations

Shi Chen, Hong Zhou, Jingang Lai, Yiwei Zhou and Chang Yu
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Shi Chen: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Hong Zhou: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Jingang Lai: E.ON Energy Research Center, RWTH Aachen University, 52074 Aachen, Germany
Yiwei Zhou: School of engineering, University of South Wales, Pontypridd CF37 1DL, UK
Chang Yu: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China

Energies, 2020, vol. 13, issue 5, 1-24

Abstract: The ideal distributed network composed of distributed generations (DGs) has unweighted and undirected interactions which omit the impact of the power grid structure and actual demand. Apparently, the coupling relationship between DGs, which is determined by line impedance, node voltage, and droop coefficient, is generally non-homogeneous. Motivated by this, this paper investigates the phase synchronization of an islanded network with large-scale DGs in a non-homogeneous condition. Furthermore, we explicitly deduce the critical coupling strength formula for different weighting cases via the synchronization condition. On this basis, three cases of Gaussian distribution, power-law distribution, and frequency-weighted distribution are analyzed. A synthetical analysis is also presented, which helps to identify the order parameter. Finally, this paper employs the numerical simulation methods to test the effectiveness of the critical coupling strength formula and the superiority over the power-law distribution.

Keywords: large-scale; distributed generations; low-voltage active distribution network; islanded mode; non-homogeneous model; synchronization; stability (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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