1. Load pattern‐based voltage stability analysis in unbalanced distribution networks considering maximum penetration level of distributed generation
- Author
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Mahdi Banejad, Udaya Annakkage, Nasser Hosseinzadeh, and M. Kazeminejad
- Subjects
Distribution networks ,Renewable Energy, Sustainability and the Environment ,business.industry ,Computer science ,020209 energy ,020208 electrical & electronic engineering ,02 engineering and technology ,Penetration (firestop) ,AC power ,Distribution system ,Electric power system ,Voltage stability ,Control theory ,Distributed generation ,0202 electrical engineering, electronic engineering, information engineering ,business ,Voltage - Abstract
Stability analysis in the power system is becoming more important than ever as more distributed energy resources penetrate in the system. This study presents a novel load pattern voltage stability index (LPVSI) applicable to transmission and distribution systems. By considering the nominal value of voltages, the power network is converted into a two-bus equivalent system. Then, LPVSI is derived by only the real-time measurement of the voltage and deviation of active and reactive power loads. Also, the assessment of distributed generation's penetration level on unbalanced systems, with maximum loadability and power loss reduction constraints, is performed with regard to daily load variations. The accuracy and efficiency of the proposed indicator are tested on an unbalanced 34-node radial distribution system. Obtained results in comparison with some other papers in the literature demonstrate that the proposed voltage stability index is fast and effective in identifying non-trivial instabilities in the power system networks.
- Published
- 2020