具有不确定EV连接的聚合V2G充电器的频率响应
Frequency Response from Aggregated V2G Chargers With Uncertain EV Connections
摘要：
在低惯性系统中，快速频率响应（FR）在确保发电机停机后的频率动态方面非常有效。配备有车辆到电网（V2G）充电器的电动车辆（EV）可以在未来提供丰富的FR来源。然而，与V2G聚合相关的不确定性（由停电时连接的EV数量不确定所驱动）尚未得到充分理解，并阻止其参与现有的服务提供框架。为了解决这一限制，本文，第一次，将这种不确定性纳入系统频率动态，从概率最低点和稳态频率的要求，通过派生的基于矩的分布鲁棒的机会约束。分析了来自25，000多个充电器的现场数据，以提供现实的参数和连接预测，以检查GB 2030系统年度运行中V2G充电器的FR值。该案例研究表明，电动汽车连接的不确定性可以通过拟议的调度框架进行有效管理，这将导致每个充电器每年节省6，300英镑或37.4吨二氧化碳。该值对可再生能源容量和FR延迟的敏感性进行了探讨，V2G容量显示为相同电网电池容量的三分之一。
英文摘要：
Fast frequency response (FR) is highly effective at securing frequency dynamics after a generator outage in low inertia systems. Electric vehicles (EVs) equipped with vehicle to grid (V2G) chargers could offer an abundant source of FR in future. However, the uncertainty associated with V2G aggregation, driven by the uncertain number of connected EVs at the time of an outage, has not been fully understood and prevents its participation in the existing service provision framework. To tackle this limitation, this paper, for the first time, incorporates such uncertainty into system frequency dynamics, from which probabilistic nadir and steady state frequency requirements are enforced via a derived momeent-based distributionally-robust chance constraint. Field data from over 25,000 chargers is analysed to provide realistic parameters and connection forecasts to examine the value of FR from V2G chargers in annual operation of the the GB 2030 system. The case study demonstrates that uncertainty of EV connections can be effectively managed through the proposed scheduling framework, which results in annual savings of £6,300 or 37.4 tCO2 per charger. The sensitivity of this value to renewable capacity and FR delays is explored, with V2G capacity shown to be a third as valuable as the same grid battery capacity.
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。
