基于PMU的智能配电网动态特性在线评估方法  

PMU Based Online Dynamic Characteristic Assessment Method of Smart Distribution Network

作　　者：郑雪筠 何维国 王少荣[1] 柳劲松 李成靖 方陈 周昀[1] 朱郁馨 李妍[1] ZHENG Xuejun;HE Weiguo;WANG Shaorong;LIU Jinsong;LI Chengjing;FANG Chen;ZHOU Yun;ZHU Yuxin;LI Yan(State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China;State Grid Shanghai Municipal Electric Power Company,Pudong New District,Shanghai 200122,China)

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074 [2]国网上海市电力公司,上海市浦东新区200122

出　　处：《电网技术》2019年第9期3210-3217,共8页Power System Technology

基　　金：国家重点研发计划项目(2017YFB0902800)~~

摘　　要：提出一种基于相量测量单元(phasor measurement unit,PMU)同步测量数据的智能配电网动态特性在线评估方法。遵循科学性、完备性、实用性和可比性原则,构建了多维度的、且能够充分表征智能配电网动态特性的动态指标体系,所提动态指标包括9项节点动态指标、6项支路动态指标和30项全网动态综合指标。针对智能配电网动态特性的在线评估应用,给出了详细的在线评估流程。该文所提评估方法仅基于PMU同步测量数据,不依赖于被评估配电网的当前拓扑结构和元件参数,因此能够较好适应于智能配电网运行方式乃至拓扑经常变动的情况。应用所提出的在线评估方法,通过比较同一配电网在采用改善动态特性的控制手段前后的评估结果即可判断控制效果。以MATLAB对改进的IEEE 33节点配电网进行仿真,生成模拟PMU同步采集数据,并以此进行动态特性评估。结果表明了所提在线评估方法的有效性。An online assessment method based on the synchronous measurement data of phasor measurement units(PMUs)is proposed for the dynamic characteristics of smart distribution network(SDN).Following the principles of scientificity,integrity,practicability,and comparability,a multi-dimensional dynamic index system,able to fully represent SDN dynamic characteristics,is constructed.The index system consists of 9 node dynamic indicators,6 branch dynamic indicators,and 30 comprehensive dynamic indicators.The online evaluation process is stated in detail for applying the proposed method.The proposed method does not need the topology information and parameters of the evaluated SDN,but only based on PMU data.Thus,the proposed method is suitable for evaluating SDN operation mode and topology changing with time.Also,applying the proposed method,the control effectiveness can be judged by comparing the evaluated results of the dynamic characteristics before and after use of control measures exerting over SDN.In order to verify effectiveness of the proposed method,a modified IEEE 33-node distribution network is simulated in MATLAB to generate the simulation data of PMU synchronous measurement data,and the dynamic characteristics of the network is analyzed.Results show that the proposed method is suitable to evaluate online SDN dynamic characteristics.

关 键 词：智能配电网 动态指标 动态特性评估 相量测量单元 

分 类 号：TM721[电气工程—电力系统及自动化]