基于有限遥测数据的中压有源配电网拓扑识别  

Topology Identification of Medium Voltage Active Distribution Network Based on Limited Telemetry Data

作　　者：郝金宝 王亮 王鹏 顾家如 HAO Jin-bao;WANG Liang;WANG Peng;GU Jia-ru(Suzhou Power Supply Company of State Grid Jiangsu Electric Power Co.,Ltd,Suzhou 215004,China)

机构地区：[1]国网江苏省电力有限公司苏州供电分公司,江苏苏州215004

出　　处：《电工电气》2024年第8期42-47,共6页Electrotechnics Electric

摘　　要：分布式电源(DG)的大规模接入给中压配电网的保护及自愈等带来了严重的挑战,而解决这一问题首先需要判断分布式电源在有源配电网中的具体接入位置及容量。基于基尔霍夫电流定律,阐述了中压有源配电网中开关柜电流与中压分布式光伏及配变的电流关系,针对目前一些地区存在的配网开关柜未投入电压采集功能,从而无法对潮流方向进行遥测的问题,建立了有源配电网拓扑识别的数学模型,并提出改进的牛顿迭代法对该拓扑识别模型进行求解,实现了光伏与开闭所馈供开关之间关联关系的判别。通过算例仿真验证了所提模型和算法的有效性。The large-scale access of distributed generation(DG)has brought serious challenges to the protection and self-healing of medium-voltage distribution networks.To solve this problem,it is first necessary to determine the specific access location and capacity of distributed generation in active distribution networks.Based on Kirchhoff’s current law,this paper firstly introduces the current relation between switchgear current and medium-voltage distributed photovoltaics and distribution transformers in medium-voltage active distribution network.Aiming at the function of voltage acquisition is not put into the distribution switchgear in some areas at present,which it is not possible to telemetry the direction of the current,established a mathematical model of topology identification of active distribution network and proposed an improved Newton’s iteration method to solve the topology recognition model.Then,the identification of the correlation relationship between photovoltaics,and the on-off feed switch is realized,and the effectiveness of the proposed model and algorithm is verified by simulation examples.

关 键 词：有源配电网 遥测数据 拓扑识别 牛顿迭代法 分布式电源 开关柜 

分 类 号：TM727[电气工程—电力系统及自动化]