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arXiv 2306.04464eess.SYcs.SY
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学习稳定局部电压/无功控制器对 OPF 代理模型的约束

Constraints on OPF Surrogates for Learning Stable Local Volt/Var Controllers

Zhenyi Yuan, Guido Cavraro, Jorge Cortés

AI总结:

针对配电网局部 Volt/Var 控制,提出增量控制算法并给出两类 OPF 代理斜率约束,以保证渐近稳定且揭示可调性与发电利用之间的权衡。

摘要:

我们研究配电网(DGs)中学习局部电压/无功(Volt/Var)控制器的问题。该方法首先学习可分离代理模型,其以局部电压和无功功率作为输入,并预测逼近最优潮流(OPF)解的无功功率设定点。我们提出一种增量控制算法,并在局部代理模型上识别出两组不同的斜率条件,使网络整体能够渐近趋向期望配置。结果揭示了两组条件之间的权衡:耦合的电压-功率斜率约束允许代理函数具有任意形状,但可能限制发电能力的利用;无功功率斜率约束可充分利用发电能力,但会限制代理函数的形状。在 IEEE 37 节点馈线上进行的交流潮流仿真展示了它们在两个 DG 场景中的稳定性保证及各自优势。

英文摘要:

We consider the problem of learning local Volt/Var controllers in distribution grids (DGs). Our approach starts from learning separable surrogates that take both local voltages and reactive powers as arguments and predict the reactive power setpoints that approximate optimal power flow (OPF) solutions. We propose an incremental control algorithm and identify two different sets of slope conditions on the local surrogates such that the network is collectively steered toward desired configurations asymptotically. Our results reveal the trade-offs between each set of conditions, with coupled voltage-power slope constraints allowing an arbitrary shape of surrogate functions but risking limitations on exploiting generation capabilities, and reactive power slope constraints taking full advantage of generation capabilities but constraining the shape of surrogate functions. AC power flow simulations on the IEEE 37-bus feeder illustrate their guaranteed stability properties and respective advantages in two DG scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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