Integrating water distribution energy flexibility in power systems operation
Integrating water distribution energy flexibility in power systems operation
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DOI：
10.1109/pesgm.2017.8274374
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
K. Oikonomou;M. Parvania;S. Burian
中科院分区：
文献类型：
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作者：
K. Oikonomou;M. Parvania;S. Burian
水分配系统（WDSs）是能源密集型基础设施，依赖于储水站和变速泵将水输送到最终用户。wds代表了通过优化柔性部件（泵和储罐）的运行来增强电力系统运行灵活性的合适候选者。然而，wds传统上被视为与电力系统运营商努力最小化供电需求的运营成本无关的基础设施。在本文中，我们提出了一个集成wds在电力系统运行中的能量灵活性的模型。更具体地说，我们认为配水系统运营商（w - dso）是一个能源精明的实体，他们预测第二天的水需求和电价，并运行建议的前一天供水系统运行模型，以优化水泵和水箱的运行，以最大限度地降低当地供水系统的运行成本，同时尊重供水系统的水力运行限制。然后，w - dso将优化后的能耗发送给电力系统运营商，运营商使用网络约束单元承诺（UC）模型将wds的能耗纳入电力系统日前运行。在6总线供电的15节点WDS上实现了该模型，并给出了优化WDS能量灵活性对电力系统运行和w - dso的影响。
Water distribution systems (WDSs) are energy intensive infrastructures that rely on water storage plants and variable speed pumps for delivering water to the end consumers. The WDSs represent suitable candidates for enhancing the flexibility of power systems operation through optimizing the operation of flexible components (pumps and tanks). However, WDSs have traditionally been treated as infrastructure uncoupled from power system operators' efforts to minimize the operation cost of supplying the electricity demand. In this paper, we propose a model for integrating the energy flexibility of WDSs in power systems operation. More specifically, we consider the water distribution system operators (W-DSOs) as an energy savvy entity, who forecast the water demand as well as the electricity prices of the next day, and run the proposed day-ahead WDS operation model to optimize the operation of pumps and tanks for minimizing the operation cost of their local WDSs, while respecting the hydraulic operating constraints of the WDSs. The W-DSOs, then, send the optimized energy consumption to the power system operator, who incorporates the energy consumption of WDSs in the day-ahead operation of the power system using the network-constrained unit commitment (UC) model. The proposed model is implemented on a 15-node WDS that is powered by a 6-bus power system and the results are presented to study the impacts of optimizing the WDS energy flexibility on power system operations as well as on the W-DSOs.