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首页> 外文期刊>Automatic Control, IEEE Transactions on >Optimal Load-Side Control for Frequency Regulation in Smart Grids
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Optimal Load-Side Control for Frequency Regulation in Smart Grids

机译：智能电网频率调节的最优负载侧控制

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摘要

Frequency control rebalances supply and demand while maintaining the network state within operational margins. It is implemented using fast ramping reserves that are expensive and wasteful, and which are expected to become increasingly necessary with the current acceleration of renewable penetration. The most promising solution to this problem is the use of demand response, i.e., load participation in frequency control. Yet it is still unclear how to efficiently integrate load participation without introducing instabilities and violating operational constraints. In this paper, we present a comprehensive load-side frequency control mechanism that can maintain the grid within operational constraints. In particular, our controllers can rebalance supply and demand after disturbances, restore the frequency to its nominal value, and preserve interarea power flows. Furthermore, our controllers are distributed (unlike the currently implemented frequency control), can allocate load updates optimally, and can maintain line flows within thermal limits. We prove that such a distributed load-side control is globally asymptotically stable and robust to unknown load parameters. We illustrate its effectiveness through simulations.
机译：频率控制重新平衡供需，同时将网络状态保持在可操作范围内。它使用昂贵且浪费的快速增加的储备来实现，并且随着当前可再生能源渗透的加速，预计储备将变得越来越必要。解决该问题的最有希望的解决方案是使用需求响应，即，负载参与频率控制。但是，如何在不引入不稳定和违反操作约束的前提下有效地整合负载参与仍然是未知的。在本文中，我们提出了一种综合的负载侧频率控制机制，可以将电网保持在运行限制内。特别是，我们的控制器可以在发生干扰后重新平衡供需，将频率恢复到其标称值，并保留区域间的潮流。此外，我们的控制器是分布式的（与当前实施的频率控制不同），可以最佳地分配负载更新，并且可以将线路流量保持在热限制内。我们证明了这种分布式负载侧控制全局渐近稳定，并且对未知负载参数具有鲁棒性。我们通过仿真来说明其有效性。

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