LAPSE:2019.0730
Published Article
LAPSE:2019.0730
Stability Analysis and Stability Enhancement Based on Virtual Harmonic Resistance for Meshed DC Distributed Power Systems with Constant Power Loads
Huiyong Hu, Xiaoming Wang, Yonggang Peng, Yanghong Xia, Miao Yu, Wei Wei
July 26, 2019
This paper addresses the stability issue of the meshed DC distributed power systems (DPS) with constant power loads (CPLs) and proposes a stability enhancement method based on virtual harmonic resistance. In previous researches, the network dynamics of the meshed DC DPS are often ignored, which affects the derivation of the equivalent system impendence. In addition, few of them have considered the meshed DC DPS including multiple sources with voltage-controlled converters and CPLs. To tackle the aforementioned challenge, this paper mainly makes the following efforts. The component connection method (CCM) is employed and expanded to derive the stability criterion of the meshed DC DPS with CPLs. This stability criterion can be simplified to relate only with the network node admittance matrix, the output impendences of the sources, and the input admittances of the CPLs. A virtual harmonic resistance through the second-order generalized integrator (SOGI) is added in the source with the voltage-controlled converter to lower the peak of the source output impendence, which can enhance the stability of the meshed DC DPS. The effectiveness of the proposed stability criterion and stability enhancement method are verified by nonlinear dynamic simulations.
Keywords
meshed DC distributed power systems, stability criterion, stability enhancement, virtual harmonic resistance
Suggested Citation
Hu H, Wang X, Peng Y, Xia Y, Yu M, Wei W. Stability Analysis and Stability Enhancement Based on Virtual Harmonic Resistance for Meshed DC Distributed Power Systems with Constant Power Loads. (2019). LAPSE:2019.0730
Author Affiliations
Hu H: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Wang X: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Peng Y: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [ORCID]
Xia Y: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Yu M: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China [ORCID]
Wei W: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Journal Name
Energies
Volume
10
Issue
1
Article Number
E69
Year
2017
Publication Date
2017-01-09
Published Version
ISSN
1996-1073
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PII: en10010069, Publication Type: Journal Article
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LAPSE:2019.0730
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doi:10.3390/en10010069
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Jul 26, 2019
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Jul 26, 2019
 
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Calvin Tsay
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