Journal
IEEE SYSTEMS JOURNAL
Volume 14, Issue 1, Pages 1024-1033Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2019.2920018
Keywords
Autonomousmicrogrid; droop control; power system stabilizer (PSS); stability improvement
Categories
Funding
- Science and Energy Research Board (SERB), Department of Science & Technology (DST), Government of India [DIA/2018/000032]
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This paper presents the design of a power system stabilizer (PSS) for stability improvement of a droop-controlled inverter-based microgrid systems. For faster power sharing, high droop gains are required, but increasing the droop gains degrades the system stability. Hence, there is a tradeoff between the faster load sharing and system stability. An answer to the given problem is presented in this paper by developing a PSS for inverter-based microgrid. The proposed stabilizer provides sufficient damping to the low-frequency oscillation even at higher value of droop gains which are usually unstable otherwise. The PSS designed in this paper is a generalized one and a step-by-stepmethod to select the PSS parameters is also presented. Time domain simulation, experimental results, and eigenvalue analysis are presented for verification of the proposed controller.
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