Paper Info
Title
Design and Field Application of Flexible Excitation System Damping Controllers
Abstract
Nowadays a strong ability of stability control is required in the increasingly complex power system. The flexible excitation system of the synchronous generator is a novel structure with full-controlled devices, which has two damping channels to provide more stable and flexible control potential compared with the conventional excitation system with silicon-controlled rectifier. It is necessary to coordinate the two damping channel controllers, i.e., power system stabilizer (PSS) and reactive power damping controller (RPDC), to effectively improve the power system stability. A novel coordinated optimization method of PSS and RPDC is proposed in this article: the phase compensation method based on the derived electromagnetic torque is employed to design the time constants of PSS and RPDC; and an optimization method considering the interactions of the oscillation modes is proposed to design the proportional gains of PSS and RPDC. The simulations and the field tests with a 55-MW hydropower generator are carried out to compare the flexible excitation system with the conventional excitation system. The comparisons of the damping ratio, steady time and peak-to-peak value of the active power demonstrate that the flexible excitation system based on the proposed method can provide more ability of stability control with satisfactory dynamic performance.
Year
DOI
Venue
2021
10.1109/TIE.2020.2967699
IEEE Transactions on Industrial Electronics
Keywords
DocType
Volume
Coordinated optimization method,field tests,flexible excitation system,reactive power damping controller (RPDC)
Journal
68
Issue
ISSN
Citations 
2
0278-0046
0
PageRank 
References 
Authors
0.34
0
9
Name
Order
Citations
PageRank
Tiantian Zhang100.34
Chengxiong Mao21911.90
Jiancheng Zhang300.34
Jie Tian411.36
Minghao Yu500.34
Kuayu Wu610.72
Hongtao Xiong700.34
Long Wu800.34
Hongfei Yu9103.35