论文标题
考虑模型线性化误差的微电网的强大轨迹受限的频率控制
Robust Trajectory-Constrained Frequency Control for Microgrids Considering Model Linearization Error
论文作者
论文摘要
在网格连接和岛屿模式之间切换的能力促进了采用微电网技术来为远程位置供电。然而，在岛屿事件期间的稳定频率是一项具有挑战性的控制任务，尤其是在转换器互换源的高渗透率下。在本文中，提出了基于数值的最佳控制（NOC）对照合成方法，以制备微电网岛化，以确保保证的性能。拟议的范式的主要功能是接近实时集中安排，以实时分散实施。对于可拖动的计算，线性化模型用于问题公式。为了适应线性化误差，将间隔分析用于计算线性化引起的不确定性作为数值间隔，以便可以将NOC问题提出为强大的混合构成线性程序。在Simulink中的完整非线性模型上验证了所提出的控件。仿真结果表明，提出的控制范式的有效性以及考虑线性化引起的不确定性的必要性。
The capability to switch between grid-connected and islanded modes has promoted adoption of microgrid technology for powering remote locations. Stabilizing frequency during the islanding event, however, is a challenging control task, particularly under high penetration of converter-interfaced sources. In this paper, a numerical optimal control (NOC)-based control synthesis methodology is proposed for preparedness of microgrid islanding that ensure guaranteed performance. The key feature of the proposed paradigm is near real-time centralized scheduling for real-time decentralized executing. For tractable computation, linearized models are used in the problem formulation. To accommodate the linearization errors, interval analysis is employed to compute linearization-induced uncertainty as numerical intervals so that the NOC problem can be formulated into a robust mixed-integer linear program. The proposed control is verified on the full nonlinear model in Simulink. The simulation results shown effectiveness of the proposed control paradigm and the necessity of considering linearization-induced uncertainty.
