Distributed, Bounded and Finite-Time Convergence Secondary Frequency Control in an Autonomous Microgrid

作者：Deng, Zicong; Xu, Yinliang^*; Sun, Hongbin; Shen, Xinwei

来源：IEEE Transactions on Smart Grid, 2019, 10(3): 2776-2788.

DOI：10.1109/TSG.2018.2810287

• Finite-time convergence
• bounded control
• microgrid
• distributed secondary control
• multi-agent system

To accommodate the intermittent renewable generations and constantly changing load demands, a proper control approach with flexible convergence time is desirable for an autonomous microgrid. This paper proposes a distributed, bounded, and finite-time convergence secondary control for frequency restoration and accurate active power sharing in an autonomous microgrid. The control input is designed to be distributed and bounded. The finite-time convergence proof and convergence time upper bound are guaranteed by rigorous analysis. Moreover, an approximation method is proposed to achieve a less conservative convergence time upper-bound compared with that of the traditional method. The effectiveness of the proposed control algorithm is validated through simulations with a modified IEEE 5-bus system and extended to a modified IEEE 39-bus system for scalability analysis.

• 出版日期2019-5
• 单位中山大学; 清华大学