基于AMI数据及电能表计量点误差远程诊断的低压电网线损模型  

Low-Voltage Loss Model Based on AMI Data and Remote Error Detection for Smart Meter Measurements

作　　者：王伟福 刘欢 李先志 刘川川 吕几凡 WANG Weifu;LIU Huan;LI Xianzhi;LIU Chuanchuan;LüJifan(State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou Zhejiang 310007,China;Beijing Zhixiang Technology Co.,Ltd.,Beijing 100083,China)

机构地区：[1]国网浙江省电力有限公司,浙江杭州310007 [2]北京志翔科技股份有限公司,北京100083

出　　处：《电子器件》2024年第5期1375-1381,共7页Chinese Journal of Electron Devices

基　　金：国网浙江省电力有限公司科技项目(5211YF200053)。

摘　　要：小超差电能表的运行误差诊断对线损计算的精度提出了更高要求。在典型台区拓扑结构上建立台区功率域线损方程,并根据电荷与能量守恒律建立了通用的台区能量域线损模型。基于AMI设备所采集的计量数据,求解模型即可对电能表的相对误差、线阻系数及固定损耗实现远程估计。通过对用户负荷变化、时钟差异、总表计量扰动等因素的分析,在实验室仿真数据和现场真实数据上盲测共同验证了模型的可靠性。模型对小超差电能表的检出及命中都能达到较高的比率,具有工程实用性和较高的经济价值。Remote error detection small over-tolerance smart meters relies upon line loss estimation with higher accuracy.Line loss equation in power domain area is derived in a typical station area,and an energetic form in energy domain is established according to charge conservation law and energy conservation law.Based on AMI data,relative error,line resistance coefficient and fixed loss of smart meters can be remotely calculated.The reliability of the model is verified by the blind tests on both simulation data and real-world data,and key factors affecting the model effect including user load variation,clock shift and measurement disturbance are simulated and analyzed.The model can achieve a high rate of detection and hit for small over-tolerance smart meters,indicating high practicability and economic value.

关 键 词：智能电能表 电力大数据 线损模型 低压电网 

分 类 号：TM743[电气工程—电力系统及自动化]