Enhancement of Power System Stability Using a Novel Power System Stabilizer with Large Critical Gain
AbstractPower system stabilizers (PSSs) are widely used for suppressing low frequency oscillations in practical power systems. However, according to the requirement of the “guide for setting test of power system stabilizer” of China, PSS gain is limited to no more than 1/3 of its critical gain. As a result, PSSs may not provide enough damping to the inter-area mode oscillations. Through analyzing the Heffron-Phillips (H-P) model of the generator with PSS, it is found that exciter mode will become unstable when PSS exceeds its critical gain. This exciter mode is formed by the natural characteristic of the exciter-PSS loop. To address this problem, a novel PSS with a parallel component added to the conventional PSS is proposed to improve its critical gain. Therefore, large gain can be chosen for the proposed PSS to meet the critical gain requirements of the guide and provide enough damping to the inter-area modes simultaneously. Simulation results on the Ximeng coal power station of China verify the effectiveness of the proposed PSS. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Liu, Z.; Yao, W.; Wen, J. Enhancement of Power System Stability Using a Novel Power System Stabilizer with Large Critical Gain. Energies 2017, 10, 449.
Liu Z, Yao W, Wen J. Enhancement of Power System Stability Using a Novel Power System Stabilizer with Large Critical Gain. Energies. 2017; 10(4):449.Chicago/Turabian Style
Liu, Ziquan; Yao, Wei; Wen, Jinyu. 2017. "Enhancement of Power System Stability Using a Novel Power System Stabilizer with Large Critical Gain." Energies 10, no. 4: 449.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.