Damping forced oscillations in power system via interline power flow controller with additional repetitive control

Protection and Control of Modern Power Systems

Qiong Chen¹  Xi Wu¹  Zhenquan Wang²  Shirui Feng²  Tao Niu² 

[1] College of Electrical Engineering, Southeast University, Nanjing, China;Jiangsu Electric Power Design Institute Co. Ltd, China Energy Engineering Group Co. Ltd, Nanjing, China;

关键词: Forced oscillation;    Interline power flow controller (IPFC);    Additional repetitive control (ARC);    Linearized state-space method;   

DOI  :  10.1186/s41601-021-00199-7

来源: Springer

【 摘 要 】

With the continuous expansion of power systems and the application of power electronic equipment, forced oscillation has become one of the key problems in terms of system safety and stability. In this paper, an interline power flow controller (IPFC) is used as a power suppression carrier and its mechanism is analyzed using the linearized state-space method to improve the system damping ratio. It is shown that although the IPFC can suppress forced oscillation with well-designed parameters, its capability of improving the system damping ratio is limited. Thus, combined with the repetitive control method, an additional repetitive controller (ARC) is proposed to further dampen the forced power oscillation. The ARC control scheme is characterized by outstanding tracking performance to a system steady reference value, and the main IPFC controller with the ARC can provide higher damping, and further reduce the amplitude of oscillations to zero compared with a supplementary damping controller (SDC). Simulation results show that the IPFC with an ARC can not only greatly reduce the oscillation amplitude, but also actively output the compensation power according to the reference value of the ARC tracking system.

【 授权许可】

CC BY