Picture of smart phone in human hand

World leading smartphone and mobile technology research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers from the Department of Computer & Information Sciences involved in researching exciting new applications for mobile and smartphone technology. But the transformative application of mobile technologies is also the focus of research within disciplines as diverse as Electronic & Electrical Engineering, Marketing, Human Resource Management and Biomedical Enginering, among others.

Explore Strathclyde's Open Access research on smartphone technology now...

Exploring the relative performance of frequency-tracking and fixed-filter phasor measurement unit algorithms under C37.118 test procedures, the effects of interharmonics, and initial attempts at merging P-class response with M-class filtering

Roscoe, Andrew (2013) Exploring the relative performance of frequency-tracking and fixed-filter phasor measurement unit algorithms under C37.118 test procedures, the effects of interharmonics, and initial attempts at merging P-class response with M-class filtering. IEEE Transactions on Instrumentation and Measurement, 62 (8). pp. 2140-2153. ISSN 0018-9456

[img]
Preview
PDF
J_2013_IEEE_TIM_Roscoe_DynamicPMU_And_OOB_PostPrint.pdf - Accepted Author Manuscript

Download (1MB) | Preview

Abstract

This paper presents improvements to frequency-tracking P-class and M-class Phasor Measurement Unit (PMU) algorithms. The performance of these algorithms is tested in simulation against the reference (Basic) algorithms from the C37.118 standard, using the formal test procedures specified in that standard. The measurements of Total Vector Error (TVE), frequency and rate-of-change-of-frequency (ROCOF) are all investigated for compliance. Generally, Total Vector Error (TVE) is found to be compliant for all algorithms. By contrast there are significant excursions for frequency and rate-of-change-of-frequency (ROCOF) measurements. More extreme non-standard tests are also applied, involving multiple simultaneous interferences. The proposed algorithms exhibit improvements in frequency and ROCOF accuracy, with errors reduced by factors of up to 150 compared to the Basic algorithms. A Hybrid P/M class PMU is proposed and demonstrated, offering P-class response to dynamic steps but M-class steady-state accuracy. However, setting usable trigger thresholds for this device requires a thorough investigation of interharmonic effects on P-class PMUs. This investigation poses more questions than it answers, leading to a questioning of the validity of any frequency or ROCOF measurement from any P-class PMU