A Simple Calibration Procedure for an LPIT plus PMU System Under Off-Nominal Conditions

被引：13

作者：

Mingotti, Alessandro ^{[1
]}

Peretto, Lorenzo ^{[1
]}

Tinarelli, Roberto ^{[1
]}

Angioni, Andrea ^{[2
]}

Monti, Antonello ^{[2
]}

Ponci, Ferdinanda ^{[2
]}

机构：

[1] Univ Bologna, Dept Elect Elect & Informat Engn, Alma Mater Studiorum, Viale Risorgimento 2, I-40136 Bologna, Italy

[2] RWTH Univ, Inst Automat Complex Power Syst, EON Energy Res Ctr, Mathieustr 10, D-52074 Aachen, Germany

来源：

ENERGIES | 2019年 / 12卷 / 24期

基金：

欧盟地平线“2020”;

关键词：

phasor measurement unit; low-power instrument transformer; nonconventional instrument transformer; metrological characterization; power quality; harmonics; non-sinusoidal; calibration procedure; UNCERTAINTY; PROPAGATION;

D O I：

10.3390/en12244645

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This work deals with two paramount devices when Smart Grids are concerned: phasor measurement units (PMUs) and low-power instrument transformers (LPITs). In particular, a simple calibration procedure to test the measurement chain PMU + LPIT has been developed. The procedure involves steady-state conditions of the grid and off-nominal input signals for testing current, voltage, frequency, and rate of change of frequency (ROCOF). In addition, the procedure includes a preliminary testing of the PMU without the LPIT to understand the influence of the latter. The procedure is then applied to a specific case study: a low-cost PMU developed by the authors and one of the most common LPITs adopted in Italian medium voltage networks. The obtained results are promising for two reasons. First, the low-cost PMU works correctly even in off-nominal conditions of the grid; second, the presented calibration procedure demonstrated to be effective and applicable to very common equipment, using a rather simple test setup.

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页数：20

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