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首页> 外文期刊>Systems, Man, and Cybernetics, Part B: Cybernetics, IEEE Transactions on >A Decentralized Mechanism for Improving the Functional Robustness of Distribution Networks
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A Decentralized Mechanism for Improving the Functional Robustness of Distribution Networks

机译：一种提高配电网功能鲁棒性的分散机制

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摘要

Most real-world distribution systems can be modeled as distribution networks, where a commodity can flow from source nodes to sink nodes through junction nodes. One of the fundamental characteristics of distribution networks is the functional robustness, which reflects the ability of maintaining its function in the face of internal or external disruptions. In view of the fact that most distribution networks do not have any centralized control mechanisms, we consider the problem of how to improve the functional robustness in a decentralized way. To achieve this goal, we study two important problems: 1) how to formally measure the functional robustness, and 2) how to improve the functional robustness of a network based on the local interaction of its nodes. First, we derive a utility function in terms of network entropy to characterize the functional robustness of a distribution network. Second, we propose a decentralized network pricing mechanism, where each node need only communicate with its distribution neighbors by sending a “price” signal to its upstream neighbors and receiving “price” signals from its downstream neighbors. By doing so, each node can determine its outflows by maximizing its own payoff function. Our mathematical analysis shows that the decentralized pricing mechanism can produce results equivalent to those of an ideal centralized maximization with complete information. Finally, to demonstrate the properties of our mechanism, we carry out a case study on the U.S. natural gas distribution network. The results validate the convergence and effectiveness of our mechanism when comparing it with an existing algorithm.
机译：多数现实世界中的分销系统都可以建模为分销网络，其中商品可以从源节点通过结点流到下沉节点。配电网络的基本特征之一是功能的鲁棒性，它反映了面对内部或外部中断而维持其功能的能力。鉴于大多数配电网络没有任何集中控制机制，我们考虑了如何以分散方式提高功能健壮性的问题。为了实现这个目标，我们研究了两个重要的问题：1）如何正式测量功能的健壮性，以及2）如何基于节点的本地交互来提高网络的功能健壮性。首先，我们根据网络熵导出效用函数，以表征配电网络的功能鲁棒性。其次，我们提出一种分散式网络定价机制，其中每个节点仅需通过向其上游邻居发送“价格”信号并从其下游邻居接收“价格”信号来与其分布邻居进行通信。这样，每个节点都可以通过最大化其收益函数来确定其流出量。我们的数学分析表明，分散定价机制可以产生与具有完整信息的理想集中式最大化等同的结果。最后，为证明我们机制的特性，我们对美国天然气分销网络进行了案例研究。与现有算法进行比较时，结果验证了我们机制的收敛性和有效性。

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