Design of secondary frequency/voltage controller with feedback linearization and distributed implemention in microgrids [微电网二次频率/电压控制器的反馈线性化设计及分布式实现]

作者：Wu L.; Liu Q.; Tang C.; Liu M.

来源：Power System Protection and Control, 2019, 47(14): 79-86.

DOI：10.19783/j.cnki.pspc.181040

• Distributed control
• Feedback linearization
• Islanded microgrids
• Secondary frequency/voltage control

Aiming at the island microgird with micro-synchronous generator as the main sources of sencondary controls, a distributed secondary frequency/voltage control scheme is proposed. First, a feedback linearization method is used to design a frequency/voltage controller suitable for micro-synchronous generators, which can eliminate the frequency and voltage deviation caused by the primary control of micro-synchronous generators. Then, a distributed control scheme is proposed based on multi-agent system theory. The proposed frequency/voltage controller only needs to exchange the frequency/voltage and active power information with its neighbors, which is independent of the centralized controller and complex communication networks and improves the reliability of the microgrid. Meanwhile, the active power outputs of micro-synchronous generators can be allocated according to their rated ratios. Finally, the effectiveness of the proposed secondaty control scheme is verified on a real microgrid.

• 单位
  华南理工大学