Betti Christian, Mingotti Alessandro, Tinarelli Roberto, Peretto Lorenzo
Department of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy.
Sensors (Basel). 2024 Mar 7;24(6):1746. doi: 10.3390/s24061746.
The need to monitor the power network is leading to a significant increase in the number of measurement points. These points consist of intelligent electronic devices and instrument transformers (or more in general sensors). However, as the number of devices increases, so does the demand for their characterization and testing. To this end, the authors formulated a new characterization procedure that offers numerous benefits for manufacturers and system operators. These benefits include: (i) reducing testing time (thus lowering costs), (ii) simplifying the existing procedures, and (iii) increasing the number of tested devices. In this study, to complete the validation of the proposed characterization procedure, the authors performed a comprehensive uncertainty evaluation. This included the identification and analysis of the uncertainty sources, the implementation of the Monte Carlo method to obtain the statistical parameters of the quantities of interest, and the final method assessment according to the obtained results. Each step is described in detail, and the results allow one to (i) replicate the uncertainty analysis on other types of instrument transformers and (ii) implement the proposed harmonic characterization procedure with the confidence that the method is accurate, flexible, and scalable.
对电网进行监测的需求导致测量点的数量大幅增加。这些测量点由智能电子设备和仪用互感器（或更一般地说是传感器）组成。然而，随着设备数量的增加，对其特性描述和测试的需求也在增加。为此，作者制定了一种新的特性描述程序，该程序为制造商和系统运营商带来了诸多益处。这些益处包括：（i）减少测试时间（从而降低成本），（ii）简化现有程序，以及（iii）增加被测设备的数量。在本研究中，为完成所提出的特性描述程序的验证，作者进行了全面的不确定度评估。这包括不确定度来源的识别与分析、实施蒙特卡洛方法以获取感兴趣量的统计参数，以及根据所得结果进行最终的方法评估。每个步骤都进行了详细描述，所得结果使人们能够（i）在其他类型的仪用互感器上重复不确定度分析，以及（ii）自信地实施所提出的谐波特性描述程序，因为该方法准确、灵活且可扩展。
