摘要
针对基于电气距离聚类的台区拓扑识别准确性不高的问题,提出了基于导线阻抗特征改进聚类鲁棒性的台区线-相-户拓扑识别方法。首先,机理上分析了台区首端电表的电压时间变化特性,采用相关性聚类会存在相线聚类错误的问题,在此基础上提出了基于导线阻抗恒定分析的拓扑识别方法改进模型,通过计算下户点电压来推导下户点与电表之间的导线阻抗,根据阻抗恒定性评价指标校验修正电压聚类结果;然后,对修正后的聚类电表建立电流优化的拓扑识别模型;最后,在仿真台区和实际台区的算例分析中验证了所提方法的可行性和有效性。
Aiming at the problem of low accuracy of topological identification of substation area based on electrical distance clustering,a line-phase-house topology identification method based on the characteristics of wire impedance is proposed to improve the robustness of clustering.Firstly,the voltage time variation characteristics of the head-end electricity meter in the substation area are analyzed in mechanism.Using correlation clustering will have the problem of phase line clustering errors.On this basis,an improved model of topology identification method based on constant analysis of wire impedance is proposed.The method derives the wire impedance between the down-consumer point and the meter by calculating the down-consumer point voltage,checks and corrects the voltage clustering results according to the evaluation index of impedance constancy.Then,a topology identification model for current optimization is established for the corrected clustered meters.Finally,the feasibility and effectiveness of the proposed method are verified by the analysis of the simulation substation area and the actual substation area.
作者
余盛达
王玉中
张祖伟
王禹迪
杨银
张勇军
YU Shengda;WANG Yuzhong;ZHANG Zuwei;WANG Yudi;YANG Yin;ZHANG Yongjun(Wenchang Power Supply Bureau,Hainan Power Grid Co.,Ltd.,Wenchang,Hainan 571300,China;Guangzhou Power Electrical Technology Co.,Ltd.,Guangzhou 510700,China;School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China)
出处
《南方电网技术》
CSCD
北大核心
2023年第7期55-64,共10页
Southern Power System Technology
基金
海南电网有限责任公司科技项目(070500KK52200002(HNKJXM20200240))
国家自然科学基金资助项目(52177085)。
关键词
导线阻抗
鲁棒性
聚类
拓扑识别
配电网
台区
wire impedance
robustness
clustering
topology identification
distributiaon network
substation area
