针对分布式资源（DER）响应存在不确定性,导致其响应不可靠,从而无法发挥其灵活性支撑潜力的问题,提出计及响应不确定性的DER集群可靠调控方法,首先根据历史响应数据统计各DER响应偏差的矩信息,由此根据中心极限定理构建集群响应可靠性量化指标,并在成本可控的前提下以此为优化目标建立模型,然后将依赖精确概率分布的非凸模型等效转换为不依赖精确概率分布的二次规划模型,最后经算例验证所提方法的有效性,表明其适用于大规模DER调控场景。
Abstract
To address the problem that uncertainty in distributed energy resource （DER） responses undermines their reliability and thus prevents them from fully realizing their flexibility potential, this paper proposes a reliability‐based control method for DER clusters that explicitly accounts for response uncertainty. First, the statistical moments of each DER’s response deviation are derived from historical response data. Based on the central limit theorem, a reliability quantification index for the cluster’s response is constructed. Under the premise of controllable costs, this index is then used as the optimization objective to establish a model. The initiall non-convex model, which relies on precise probability distributions, is equivalently transformed into a quadratic programming model that does not depend on exact probability distributions. Finally, the effectiveness of the proposed method is validated through case studies, demonstrating its suitability for large-scale DER control scenarios.
关键词
需求侧响应 /
分布式资源 /
电力系统 /
响应不确定性 /
可靠调控
Key words
demand response /
distributed energy resources /
power system /
response uncertainty /
reliable control
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基金
国网湖南省电力有限公司重大科学技术项目（5216A1240008）; 国家重点研发计划（2023YFB2407601）
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