An Advance Distributed Control Design for Wide-Area Power System Stability
An Advance Distributed Control Design for Wide-Area Power System Stability
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用于广域电力系统稳定性的先进分布式控制设计
DOI：
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发表时间：
2013
期刊：
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通讯作者：
I. Atawi
中科院分区：
文献类型：
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作者：
I. Atawi
电力系统控制的发展是世界上主要关注的问题。一些趋势已经导致电力系统被夸大，包括电力需求的快速增长，可再生能源对系统的渗透率越来越高，以及电力调度和传输的不确定性。为了应对这些挑战，功率控制必须克服几个结构性障碍，其中一个主要障碍是处理系统的高维性。
控制器结构的非线性降低产生了有效的控制信号，减少了计算负荷。在大多数现有的研究中，控制和通信结构的拓扑结构是已知的合成之前，和分布式控制的设计进行服从这个特定的结构。然而，在这篇论文中，我们提出了一个先进的分布式控制设计模型，其中控制系统和它们的通信结构是同时设计的。在这种情况下，解决了结构优化问题，涉及通信约束的结合，这将惩罚互连中的任何通信复杂性，因此将是拓扑相关的。这个结构优化问题可以在线性矩阵不等式和l1-最小化的背景下制定。
互联电力系统通常表现出多个主导的区域间低频振荡，导致大面积停电。在这篇论文中，稳定控制的具体目标就是抑制这些区域间的振荡。大规模电力系统的仿真结果表明，如何将分布式控制的最佳结构的设计。然后，将该结构与固定控制结构、完全分散控制结构和集中控制结构进行了比较。
The development of control of a power system that supply electricity is a major concern in the world. Some trends have led to power systems becoming overstated including the rapid growth in the demand for electrical power, the increasing penetration of the system from renewable energy, and uncertainties in power schedules and transfers. To deal with these challenges, power control has to overcome several structural hurdles, a major one of which is dealing with the high dimensionality of the system.
Dimensionality reduction of the controller structure produces effective control signals with reduced computational load. In most of the existing studies, the topology of the control and communication structure is known prior to synthesis, and the design of distributed control is performed subject to this particular structure. However, in this thesis we present an advanced model of design for distributed control in which the control systems and their communication structure are designed simultaneously. In such cases, a structure optimization problem is solved involving the incorporation of communication constraints that will punish any communication complexity in the interconnection and thus will be topology dependent. This structure optimization problem can be formulated in the context of Linear Matrix Inequalities and l1-minimization.
Interconnected power systems typically show multiple dominant inter-area low-frequency oscillations which lead to widespread blackouts. In this thesis, the specific goal of stability control is to suppress these inter-area oscillations. Simulation results on large-scale power system are presented to show how an optimal structure of distributed control would be designed. Then, this structure is compared with fixed control structures, a completely decentralized control structure and a centralized control structure.