Distributed plug-and-play optimal generator and load control for power system frequency regulation
Distributed plug-and-play optimal generator and load control for power system frequency regulation
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DOI：
10.1016/j.ijepes.2018.03.014
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发表时间：
2018-10
影响因子：
5.2
通讯作者：
Changhong Zhao;Enrique Mallada;S. Low;J. Bialek
中科院分区：
文献类型：
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作者：
Changhong Zhao;Enrique Mallada;S. Low;J. Bialek
提出了一种可在发电机和可控负荷上以即插即用方式实现的分布式电力系统频率调节控制方案。所提出的方案是基于本地测量，本地计算，并通过通信网络与任意（但连接）拓扑结构的邻域信息交换。在发电或负荷突然变化的情况下，所提出的方案可以恢复标称频率和参考区域间潮流，同时最小化参与发电机和负荷的总控制成本。电力网络的稳定性下提出的控制证明了一个相对现实的模型，其中包括非线性潮流和通用（潜在的非线性或高阶）的涡轮机调速器模型，并进一步与一阶和二阶涡轮机调速器模型作为特例。在仿真中，所提出的控制方案显示出相当的性能，现有的自动发电控制（AGC）时，只在发电机侧实施，并表现出更好的动态特性比AGC时，每个计划都实施发电机和可控负载。仿真结果也表明了该方案的通信链路故障的鲁棒性。
A distributed control scheme, which can be implemented on generators and controllable loads in a plug-and-play manner, is proposed for power system frequency regulation. The proposed scheme is based on local measurements, local computation, and neighborhood information exchanges over a communication network with an arbitrary (but connected) topology. In the event of a sudden change in generation or load, the proposed scheme can restore the nominal frequency and the reference inter-area power flows, while minimizing the total cost of control for participating generators and loads. Power network stability under the proposed control is proved with a relatively realistic model which includes nonlinear power flow and a generic (potentially nonlinear or high-order) turbine-governor model, and further with first- and second-order turbine-governor models as special cases. In simulations, the proposed control scheme shows a comparable performance to the existing automatic generation control (AGC) when implemented only on the generator side, and demonstrates better dynamic characteristics than AGC when each scheme is implemented on both generators and controllable loads. Simulation results also show robustness of the proposed scheme to communication link failure.