Using Smart Meter measurements to manage accuracy of current calculations in LV feeders

H. Schwefel, J. Rasmussen, R. Olsen, Henrik Ringgaard, N. Silva
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引用次数: 8

Abstract

Knowledge of currents in individual Low Voltage feeders of a secondary substation is interesting for distribution system operators for a variety of purposes. Deploying measurement devices at each feeder in each substation, however, can be costly. Due to the increasing deployment of Smart Meters, the knowledge about currents at each connected customer is in principle available. This paper proposes and evaluates an approach to determine the feeder currents taking into account the impact of measurement errors of Smart Meter measurements. The developed approach makes a rigorous derivation of confidence intervals for the calculated voltage and current values utilizing a subset of measured voltages and currents as input. The approach is applied to two realistic low voltage grids and the impact of measurement errors and missing smart meter measurements is quantitatively analyzed.
使用智能电表测量来管理低压馈线电流计算的准确性
对于各种目的的配电系统操作员来说,二级变电站各个低压馈线的电流知识是有趣的。然而,在每个变电站的每个馈线上部署测量设备可能成本高昂。由于智能电表的部署越来越多,原则上每个连接客户的电流信息都是可用的。本文提出并评价了一种考虑智能电表测量误差影响的馈线电流确定方法。所开发的方法利用测量电压和电流的子集作为输入,对计算电压和电流值的置信区间进行严格的推导。将该方法应用于两个实际的低压电网,定量分析了测量误差和智能电表漏测的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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