Mingotti Alessandro, Betti Christian, Peretto Lorenzo, Tinarelli Roberto
Department of Electrical, Electronic and Information Engineering, Guglielmo Marconi Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy.
Sensors (Basel). 2022 Mar 15;22(6):2274. doi: 10.3390/s22062274.
The distribution network is experiencing a massive deployment of intelligent electronic devices (IEDs) such as energy meters, protective devices, and phasor measurement units (PMUs). This phenomenon resulted, on the one hand, in (i) the availability of distributed measurement systems capable of monitoring and collecting measurements from the distribution network, and (ii) increasing awareness of the system operator about the status of the network. On the other hand, such a significant number of devices require to be characterized, over the years, and assessed in both sinusoidal and distorted conditions. However, the characterization process may require a huge investment of money and time considering the low availability of reference instruments and accredited laboratories. To this purpose, this paper presents a simple and fast test procedure, performed with cheap and low-voltage instrumentation, to characterize two off-the-shelf low-power medium-voltage sensors in the power quality frequency range. In detail, the paper describes the measurement setup developed for the characterization and the performed tests. In addition, the method was also reproduced with reference equipment for validation purposes. Lastly, for both tests, an uncertainty evaluation was performed to quantify the goodness of the proposed method. From the results, it is possible to appreciate that the designed cheap and simple test can achieve as accurate results as those of a sophisticated and expensive equipment.
配电网络正在经历智能电子设备（IED）的大规模部署，如电表、保护装置和相量测量单元（PMU）。一方面，这种现象带来了：（i）能够监测和收集配电网络测量数据的分布式测量系统的可用性；（ii）系统运营商对网络状态的认识不断提高。另一方面，多年来需要对如此大量的设备在正弦和畸变条件下进行特性描述和评估。然而，考虑到参考仪器和认可实验室的可用性较低，特性描述过程可能需要大量的资金和时间投入。为此，本文提出了一种简单快速的测试程序，使用廉价的低压仪器对电能质量频率范围内的两款现成的低功率中压传感器进行特性描述。详细地说，本文描述了为特性描述而开发的测量装置和所进行的测试。此外，为了验证目的，还用参考设备重现了该方法。最后，对这两个测试都进行了不确定度评估，以量化所提方法的优良程度。从结果可以看出，所设计的廉价且简单的测试能够获得与复杂且昂贵的设备一样准确的结果。
