Abstract Properly scheduling flexible regulation resources plays a critical role in reliable operation of the power systems with high penetration of wind power. However, it remains an open question as to how to decide an operation guideline for this system to avoid the security violation and shortage of flexible ramping capacities (FRC). Amongst, it is crucial to determine the wind power injections that the system can accommodate by carefully considering FRC requirement from the whole scheduling interval. In this paper, the concept of accommodated domain of wind power (ADWP) is proposed as a metric for quantifying flexibility and an operational guideline. On this basis, two approaches for flexible look-ahead unit commitment (LAUC) are presented: Three-stage interval optimization approach, by which the largest ADWP is obtained and its corresponding operating cost is also optimized; and scenario-based stochastic optimization approach is used to minimize the overall cost, so as to obtain the most economical ADWP. Test results of IEEE 30-bus and IEEE 118-bus systems show that the proposed approaches for LAUC can effectively handle the ramping requirements and reduce the overall cost.

中文翻译：

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量化风电适应域以实现灵活的前瞻机组承诺

摘要 合理调度灵活的调节资源对于风电高渗透率电力系统的可靠运行至关重要。然而，如何确定该系统的操作指南以避免安全违规和灵活爬坡能力（FRC）不足仍然是一个悬而未决的问题。其中，通过仔细考虑整个调度间隔的 FRC 要求来确定系统可以容纳的风电注入是至关重要的。在本文中，风电适应域（ADWP）的概念被提出作为量化灵活性的度量和操作指南。在此基础上，提出了两种灵活的前瞻单元承诺（LAUC）方法：三阶段间隔优化方法，从而获得最大的ADWP，并优化其相应的运行成本；并使用基于场景的随机优化方法来最小化总体成本，从而获得最经济的ADWP。IEEE 30 总线和 IEEE 118 总线系统的测试结果表明，所提出的 LAUC 方法可以有效地处理斜坡需求并降低总体成本。