The role of energy storage in mitigating ramping inefficiencies caused by variable renewable generation
The role of energy storage in mitigating ramping inefficiencies caused by variable renewable generation
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DOI：
10.1016/j.enconman.2017.12.054
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发表时间：
2018-04
影响因子：
10.4
通讯作者：
A. Shahmohammadi;R. Sioshansi;A. Conejo;S. Afsharnia
中科院分区：
文献类型：
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作者：
A. Shahmohammadi;R. Sioshansi;A. Conejo;S. Afsharnia
可变可再生能源发电在电力系统中的渗透率不断上升，可能会带来运营挑战。其中之一是，可再生能源可能会增加对具有快速增长能力的可调度发电的需求。这可能是昂贵的，因为在许多情况下，灵活的发电机可能比具有较慢斜坡能力的基本负载单元更昂贵。如果没有坡道能力可用，可能需要可再生的削减。解决这一需求的替代方案是使用能源储备。这带来的一个问题是，可再生能源和传统发电机以及能源储存将如何在市场环境中相互作用，以及某些资产所有权结构是否会导致更有效的协调。为此，本文提出了不同类型市场主体之间相互作用的多阶段市场均衡模型。通过一个算例研究了具有有限斜坡能力的常规发电机对可再生能源并网的影响。我们还考察了参与市场储能的各种结构。我们发现，从缓解市场非效率的角度来看，可再生能源发电和储能的共同拥有和合作带来了最好的结果。由市场经营者直接控制储能或作为一个独立的利润最大化公司参与是效率较低的。
Rising penetrations of variable renewable generation in electric power systems can raise operational challenges. One is that renewables can increase the need for dispatchable generation with fast-ramping capabilities. This can be costly, because in many instances flexible generators can be more expensive than baseload units that have slower ramping capabilities. If ramping capacity is not available, renewable curtailment may be needed. An alternate solution to this need for ramping is to use energy storage.A question that this raises is how renewable and conventional generators and energy storage would interact in a market environment, and whether certain asset-ownership structures would result in more efficient coordination. To this end, this paper presents a multi-period market-equilibrium model of interactions between these different types of market agents. The impacts on renewable integration of conventional generators having limited ramping capabilities are studied through an illustrative case study. We also examine a variety of structures for the participation of energy storage in the market. We find that co-ownership and co-operation of renewable generators and energy storage brings about the best results from the perspective of alleviating market inefficiencies. Having energy storage directly controlled by the market operator or participating as an independent profit-maximizing firm is less efficient.