David Macii
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View article: Clustering and Fusion of Distributed Multitone Frequency Measurement Data for Enhanced Grid-Level Power Quality Monitoring
Clustering and Fusion of Distributed Multitone Frequency Measurement Data for Enhanced Grid-Level Power Quality Monitoring Open
The increasing diffusion of both nonlinear loads and renewable-based distributed energy resources (DERs) may cause serious power quality (PQ) problems due to the injection of significant harmonics and interharmonics. To mitigate some of th…
View article: A multi-target detection and position tracking algorithm based on mmWave-FMCW radar data
A multi-target detection and position tracking algorithm based on mmWave-FMCW radar data Open
Detecting and tracking the position of multiple targets indoors is a challenging measurement problem due to the inherent difficulty to cluster correctly the sensor data associated to a given target and to track the position of each cluster…
View article: Single-cycle P Class phasor estimation based on harmonics whitening and off-nominal frequency offset adjustment
Single-cycle P Class phasor estimation based on harmonics whitening and off-nominal frequency offset adjustment Open
Phasor Measurement Units (PMUs) are essential for real-time power system monitoring and control. In this paper, a novel algorithm for protection (i.e., P Class) PMUs is presented. The proposed algorithm consists of four steps: preliminary …
View article: Narrowband Interferers Cancellation Versus Estimation: Impact on Synchrophasor Measurement
Narrowband Interferers Cancellation Versus Estimation: Impact on Synchrophasor Measurement Open
One of the open issues in Phasor Measurement Units (PMU) design is how to suppress the influence of harmonics and Out-of-Band Interharmonics (OOBIs) on synchrophasor measurement over short observation intervals. In most PMUs, such narrowba…
View article: Basics of Industrial Metrology
Basics of Industrial Metrology Open
As known, cyber-physical systems and ICT technologies in general are the backbone of the fourth industrial revolution (also known as Industry 4.0 in Europe). However, flexibility, efficiency, resilience and, above all, high-quality smart m…
View article: Enhanced IpD2FT-Based Synchrophasor Estimation for M Class PMUs Through Adaptive Narrowband Interferers Detection and Compensation
Enhanced IpD2FT-Based Synchrophasor Estimation for M Class PMUs Through Adaptive Narrowband Interferers Detection and Compensation Open
One of the most challenging problems in the design of next-generation phasor measurement units (PMUs) is related to the need to minimize the impact of multiple harmonics and out-of-band interferers (OOBIs) on the measurement of synchrophas…
View article: Gaussian Filters for P Class PMUs: a Performance Comparison of Alternative FIR Design Procedures
Gaussian Filters for P Class PMUs: a Performance Comparison of Alternative FIR Design Procedures Open
Protection-oriented (P Class) Phasor Measurement Units (PMUs) are required to estimate the synchrophasor, the frequency and the Rate of Change of Frequency (ROCOF) of ac voltage or current waveforms with high accuracy and low latency to de…
View article: Time Synchronization for Smart Grids Applications: Requirements and Uncertainty Issues
Time Synchronization for Smart Grids Applications: Requirements and Uncertainty Issues Open
Smart grid implementation requires that multiple distributed systems are synchronized within and between substations.This is needed to coordinate the Intelligent Electronic Devices (IEDs) as well as to align in time the measurement data as…
View article: Algorithms for Enhanced Indoor Positioning and Tracking based on a 60-GHz Radar Platform
Algorithms for Enhanced Indoor Positioning and Tracking based on a 60-GHz Radar Platform Open
Wireless technologies are increasingly adopted for indoor localisation and tracking. Among them, radars based on 60 GHz phased-array transceivers are becoming a viable and low-cost solution, which delivers high accuracy with a low computat…
View article: Indoor Localization Uncertainty Control Based on Wireless Ranging for Robots Path Planning
Indoor Localization Uncertainty Control Based on Wireless Ranging for Robots Path Planning Open
The accurate localization of robots in indoor environments is a well-known measurement problem, which becomes particularly critical in crowded scenarios, where collision with obstacles, objects, and human operators is very high. In this ar…
View article: A Tuned Whitening-Based Taylor-Kalman Filter for P Class Phasor Measurement Units
A Tuned Whitening-Based Taylor-Kalman Filter for P Class Phasor Measurement Units Open
Protection-oriented (P Class) phasor measurement units (PMUs) are required to reconcile high measurement accuracy and low latency in order to promptly detect possible anomalous operating conditions in power systems. Most of the existing es…
View article: A Flexible Top-Down Data-Driven Stochastic Model for Synthetic Load Profiles Generation
A Flexible Top-Down Data-Driven Stochastic Model for Synthetic Load Profiles Generation Open
The study of the behavior of smart distribution systems under increasingly dynamic operating conditions requires realistic and time-varying load profiles to run comprehensive and accurate simulations of power flow analysis, system state es…
View article: Kalman Filtering with Harmonics Whitening for P Class Phasor Measurement Units
Kalman Filtering with Harmonics Whitening for P Class Phasor Measurement Units Open
The need for increasingly accurate and fast Phasor Measurement Units (PMUs), especially for active distribution systems monitoring, requires to achieve challenging trade-offs between measurement uncertainty and responsiveness. This is part…
View article: Ruling uncertainties in Range-only Robot Localisation
Ruling uncertainties in Range-only Robot Localisation Open
We consider a mobile robot localising itself through a set of UWB wireless anchors. We show how the use of an appropriate localisation algorithm allows for an analytical estimate of the localisation uncertainty. This information is used to…
View article: IpDFT-Tuned Estimation Algorithms for PMUs: Overview and Performance Comparison
IpDFT-Tuned Estimation Algorithms for PMUs: Overview and Performance Comparison Open
The Interpolated Discrete Fourier Transform (IpDFT) is one of the most popular algorithms for Phasor Measurement Units (PMUs), due to its quite low computational complexity and its good accuracy in various operating conditions. However, th…
View article: Tri-Objective Optimal PMU Placement Including Accurate State Estimation: The Case of Distribution Systems
Tri-Objective Optimal PMU Placement Including Accurate State Estimation: The Case of Distribution Systems Open
This paper presents a tri-objective Optimal Phasor Measurement Units (PMUs) Placement (OPP) strategy that is focused on the minimization of i) the total number of PMU channels, ii) the maximum state estimation uncertainty based only on hig…
View article: An Uncertainty-Driven and Observability-Based State Estimator for Nonholonomic Robots
An Uncertainty-Driven and Observability-Based State Estimator for Nonholonomic Robots Open
The problem addressed in this article is the localization of a mobile robot using a combination of onboard sensors and ultrawideband (UWB) beacons. By using a discrete-time formulation of the system's kinematics, we identify the geometric …
View article: A Distribution System State Estimator Based on an Extended Kalman Filter Enhanced with a Prior Evaluation of Power Injections at Unmonitored Buses
A Distribution System State Estimator Based on an Extended Kalman Filter Enhanced with a Prior Evaluation of Power Injections at Unmonitored Buses Open
In the context of smart grids, Distribution Systems State Estimation (DSSE) is notoriously problematic because of the scarcity of available measurement points and the lack of real-time information on loads. The scarcity of measurement data…
View article: Robot-Based Indoor Positioning of UHF-RFID Tags: The SAR Method With Multiple Trajectories
Robot-Based Indoor Positioning of UHF-RFID Tags: The SAR Method With Multiple Trajectories Open
This paper presents the application of the Synthetic Aperture Radar (SAR) localization method for indoor positioning of UHF-RFIDtags when the robot-mounted reader antenna moves along multiple trajectories. By properly combining the phase d…
View article: Performance Comparison of FIR Low-Pass Digital Differentiators for Measurement Applications
Performance Comparison of FIR Low-Pass Digital Differentiators for Measurement Applications Open
Low-pass Digital Differentiators (LPDs) are adopted in a variety of measurement and testing applications. However, a clear performance analysis of different solutions is seldom reported in the scientific literature. Maybe this is due to th…
View article: Ranging-Free UHF-RFID Robot Positioning Through Phase Measurements of Passive Tags
Ranging-Free UHF-RFID Robot Positioning Through Phase Measurements of Passive Tags Open
The phase of the signals backscattered by the ultrahigh frequency radio-frequency identification (UHF-RFID) tags is generally more insensitive to multipath propagation than the received signal strength indicator (RSSI). However, signal pha…
View article: A Simple Time-Domain Algorithm for Synchrophasor, Frequency and ROCOF Estimation
A Simple Time-Domain Algorithm for Synchrophasor, Frequency and ROCOF Estimation Open
The proliferation of distributed energy resources and lug-in electric vehicles is expected to change present distribution systems, thus stressing the role of measurement instrumentation enabling safe and flexible smart grid operation. In t…
View article: Rapid Voltage Change Detection: Limits of the IEC Standard Approach and Possible Solutions
Rapid Voltage Change Detection: Limits of the IEC Standard Approach and Possible Solutions Open
Rapid voltage changes (RVCs) are power quality (PQ) events characterized by small and fast transitions between two steady-state root-mean-square (rms) voltage levels. RVCs occur quite often at the distribution level and are expected to be …
View article: Effective Landmark Placement for Robot Indoor Localization With Position Uncertainty Constraints
Effective Landmark Placement for Robot Indoor Localization With Position Uncertainty Constraints Open
A well-known, crucial problem for indoor positioning of mobile agents (e.g., robots) equipped with exteroceptive sensors is related to the need to deploy reference landmarks in a given environment. Normally, anytime a landmark is detected,…