Algorithm for Calculating the B-Spline Coefficients used in Interpolations for Harmonics Assessment in Power Systems Applications

Pocola, Adrian Augustin; Dogaru, Elvis Alexandru; Crisovan, Florian Iulian; Frigura-Iliasa, Mihaela; Frigura-Iliasa, Flaviu Mihai; Vatau, Doru

doi:10.1109/ciem52821.2021.9614702

Cited by 1 publication

(1 citation statement)

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“…This approach integrates two time-domain-based resampling techniques: Real-Time B-Spline Interpolation (RT-BSI) and Modified Akima Piecewise Cubic Hermite Interpolation (MA-PCHI). These methods recalibrate the sampling points by assessing the signal's local properties and applying interpolation techniques, effectively mitigating Sampling Time Error (STE) (Yang et al, 2018), (Pocola et al, 2021), (Wang et al, 2012). However, it is crucial to note that time-domain manipulations may potentially alter the signal's frequency domain properties, leading to distortions or added noise, necessitating further research to fully understand the implications of these resampling techniques on synchronized sampling.…”

Section: Introductionmentioning

confidence: 99%

Synchronized measurement method for urban distribution networks based on proportional-integral control

Yin,

Yu,

Liang

et al. 2024

Front. Energy Res.

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In the context of the rising prevalence of renewable energy, the need for precise and synchronized measurements in urban distribution networks has become increasingly critical. Conventional synchronization techniques, which predominantly depend on Global Navigation Satellite System (GNSS) timing signals, are often plagued by significant sampling time errors. Addressing this challenge, this study introduces an innovative automatic synchronization measurement method employing proportional-integral (PI) control. This method is composed of three integral components: the monitoring of local clock phases via pulses per second (PPS) signals, modulation of the clock phase through a PI controller, and the estimation of grid phasors from the synchronized sampled data. The test results of this method on a hardware platform demonstrate its capability to significantly reduce the sampling error from 2 × 10−3 V to an impressive 1 × 10−5 V, while also meeting the requirements of the synchronized phasor measurement standards outlined in C37.118.1. These advancements underscore the significant potential of PI-controlled simultaneous sampling in enhancing the operational efficiency and reliability of urban distribution networks, particularly in environments with a high integration of renewable energy sources.

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Section: Introductionmentioning

confidence: 99%