考虑随机性的主动配电网有功无功可行域计算方法  

A Method for Calculating the Feasible Operation Region of Active and Reactive Power in Active Distribution Networks Considering Stochasticity

作　　者：王宣元 张玮 李长宇 谢欢 郭庆来[3] 王彬[3] 张宇谦 WANG Xuanyuan;ZHANG Wei;LI Changyu;XIE Huan;GUO Qinglai;WANG Bin;ZHANG Yuqian(State Grid Jibei Electric Power Co.,Ltd.,Beijing 100052,China;State Grid Jibei Electric Co.,Ltd.Research Institution,Beijing 100052,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]国网冀北电力有限公司,北京100052 [2]国网冀北电力有限公司电力科学研究院,北京100045 [3]清华大学电机工程与应用电子技术系,北京100084

出　　处：《中国电力》2025年第4期182-192,共11页Electric Power

基　　金：国网冀北电力有限公司科技项目(新能源集群主动支撑的“双高”送端电力系统无功电压调控关键技术及架构研究,B3018K23000Z)。

摘　　要：随着可再生能源的大规模接入,电力系统面临灵活性资源短缺的挑战,而配电网中的分布式电源和电力电子设备具备提供灵活性的潜力。为此,综合了多种灵活性提供单元、网络运行约束及分布式电源和负荷的不确定性,提出一种考虑不确定性的配网灵活性提供潜力评估方法。首先,建立一种改进的确定性可行域计算方法;然后,通过基于抽样的方法建模负荷和分布式电源的不确定性;最后,通过算例结果验证该方法的准确性与有效性。算例结果表明,该方法能够提供可行域的概率分布及不同置信水平下的可行域,且在相同计算成本下具有更高的精度,避免了过于乐观的结果。The large-scale integration of renewable energy poses challenges to the power systems,such as the shortage of flexibility resources.However,renewable energy and power electronics connected to the distribution networks can provide flexibilities.This paper proposes a novel method to determine the stochastic feasible operation region of distribution networks,considering flexibilityproviding units,network operational constraints,and uncertainties in renewable energy generation and loads.Firstly,an improved method for calculating the deterministic flexibility operation region is introduced.And then,a scenario-based approach is used to model the uncertainties of loads and distributed generations.Finally,a case study demonstrates the accuracy and effectiveness of the proposed method.The case study results show that the proposed method can provide both the probability distribution of the feasible operation region and the operation regions at different confidence levels,and achieves higher accuracy with the same computational cost and avoids overly optimistic results.

关 键 词：可行域 可再生能源 灵活性资源 输配协同 随机性 

分 类 号：TM73[电气工程—电力系统及自动化]