Market mechanism to enable grid-aware dispatch of Aggregators in radial distribution networks
Market mechanism to enable grid-aware dispatch of Aggregators in radial distribution networks
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发表时间：
2022-07
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通讯作者：
Nawaf Nazir;M. Almassalkhi
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作者：
Nawaf Nazir;M. Almassalkhi
-本文提出了一种基于市场的优化框架，其中聚合器可以竞争整个配电支线的节点容量，并保证分配的fl可扩展容量不会导致过载或拥塞。因此，这种机制允许拥有分配能力的聚合器在批发市场水平上追求一些服务，以最大化fl可配置资源的收入。基于聚合容量(MW)和网络接入价格(美元/MW)，配电系统运营商(DSO)制定了一个优化问题，该优化问题在隐式考虑AC网络限制的同时，将容量优先分配给整个网络中的不同聚合器。这种网格感知分配是通过将凸内近似合并到优化框架中来获得的，该优化框架将主机容量优先分配给不同的聚合器。通过将节点电压和变压器约束纳入优化框架，我们将传输级容量市场清算、公用事业需求收费和类似互联网的带宽分配规则的概念应用于配电系统运营。基于IEEE配电网的仿真结果表明了该方法的有效性。
—This paper presents a market-based optimization framework wherein Aggregators can compete for nodal capacity across a distribution feeder and guarantee that allocated flexible capacity cannot cause overloads or congestion. This mechanism, thus, allows Aggregators with allocated capacity to pursue a number of services at the whole-sale market level to maximize revenue of flexible resources. Based on Aggregator bids of capacity (MW) and network access price ($/MW), the distribution system operator (DSO) formulates an optimization problem that prioritizes capacity to the different Aggregators across the network while implicitly considering AC network constraints. This grid-aware allocation is obtained by incorporating a convex inner approximation into the optimization framework that prioritizes hosting capacity to different Aggregators. We adapt concepts from transmission-level capacity market clearing, utility demand charges, and Internet-like bandwidth allocation rules to distribution system operations by incorporating nodal voltage and transformer constraints into the optimization framework. Simulation based results on IEEE distribution networks showcase the effectiveness of the approach.