Farnoosh Rahmatian - IEEE Xplore Author Profile

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The concept of synchro-waveforms has received increasing attention in recent years in the field of power system monitoring, keeping pace with the changes and the challenges in the power systems and smart grids landscape. The sensor device to record synchro-waveforms may be referred to as a waveform measurement unit (WMU). WMUs record time-synchronized waveform measurements of voltage and current a...Show More
Sensing and measurement devices are keeping pace with advancements in the distribution power system. The ability to provide time-synchronized measurements at a fast reporting rate by distribution-Phasor Measurement Units (D-PMUs), especially with increasing distributed renewable energy resources (DRERs), offers great opportunities. However, unlike the transmission systems, distribution system wave...Show More
Extreme weather conditions are placing harder requirements on grid resiliency. We have developed and deployed wideband optical electric field sensors to enable a wide-area synchrophasor and synchronized waveform measurement system on the transmission grid in Puerto Rico with up to one mega-samples-per-second (Msps) measurement resolution. This wide-area synchronized measurement system is architect...Show More
This work presents a new algorithm for detecting and classifying data anomalies in operational measurements using statistical, clustering, and outlier-based approaches. Base detectors explored in this work includes density-based spatial clustering of applications with noise, K-Means, local outlier factor, feature bagging, and robust random cut forests using real distribution system datasets. An en...Show More
Sensing and measurement devices are keeping pace with the advancement in the industrial power distribution system. The ability to provide time-synchronized measurements at a fast reporting rate by distribution-level PMUs (D-PMUs) specially with increasing distributed energy resources (DERs) offer great opportunities for monitoring and control. However, unlike the transmission systems, the distribu...Show More
Extreme weather conditions have increased the demand for greater grid resiliency both in grid hardening and in faster response to events on the grid. We have deployed wideband optical electric field sensors with one mega-samples-per-second (Msps) measurement resolution to enable wide-area synchronized waveform capture on the transmission grid in Puerto Rico, to enable a number of advanced function...Show More
With the rapid expansion of distributed energy resources in the distribution network, system operators need accurate and real-time estimations of system states in order to actively manage the distribution system. However, existing metering infrastructure does not provide adequate support for real-time monitoring in the distribution system. In this paper, we propose a real-time, data-driven approac...Show More
This article examines critical smart city infrastructure components, like electricity supply, transportation, and telecommunication, in the face of an emergency like COVID-19. The electricity infrastructure is a critical component of any smart city and significantly impacts other systems, like transportation, communication, and water delivery and treatment.Show More
Synchrophasor data quality issues have been a challenge for robust application deployment in the power grid. This paper presents the ability of a three-phase distribution linear state estimator (DLSE) to detect various types of synchrophasor bad data. The DLSE is the first application layer that pre-processes the synchrophasor data and produces state estimates for all observable nodes of the syste...Show More
Anomaly and event data analysis is necessary for enhanced situational awareness to help with decision support. Rapid growth in the deployment of synchrophasor technologies provides rich data sets to make it possible. In particular, the distribution systems with high penetrations of distributed generations, associated control, and distributed automation provide multiple components to respond to int...Show More
Microgrids enable improved community resiliency and effective integration of distributed energy resources. Microgrids traditionally have been designed with predefined, static electrical boundaries, a historical load curve, and a design peak load. With advanced metering infrastructure (AMI) deployed within a community microgrid, operators may determine projected peak (compared to design peak load) ...Show More
Although synchrophasor measurement technology (SMT) has become a somewhat mature and operational tool used in transmission-level power networks, its use in active distribution networks (ADNs) is still in very early stages. Due to distinct features (such as unbalanced operation, very low phase angle differences, greater harmonics pollution, and lower signal-to-noise ratios in distribution networks)...Show More
Design and performance of a digital signal processing platform for enhancing off-the-shelf voltage and current sensors are presented. The platform was developed for enabling advanced distribution grid applications with existing low-cost sensors. This digital sensor system leverages a variety of off-the-shelf voltage and current sensing technologies, analog-to digital conversion, and sensor correct...Show More
This paper describes the demonstration of synchrophasor-based application for real-time monitoring, analysis, and situational awareness of ComEd Bronzeville Community Microgrid (BCM). A real-time situational awareness platform described in this paper utilizes Phasor Measurement Units (PMU) for distribution three phase linear state estimation, including observability analysis, bad data detection, o...Show More
This paper presents a medium-voltage intelligent measurement platform that provides post-processing of raw measurements received from commercially-available voltage/current sensors to enhance accuracy and bandwidth of the monitoring system. Furthermore, this platform integrates into a Data Distribution Service (DDS) messaging bus for distributed control and interoperability. The authors present th...Show More
The electricity network is a very large-scale and widely distributed system that is highly interdependent with other large infrastructure systems (e.g., natural gas, telecommunication, water and wastewater, and transportation). Power grids are being stressed by severe loading conditions caused by the rising electrification of infrastructure (e.g., in creasing the use of electric vehicles) as well ...Show More
This paper proposes to incorporate goodness-of-fit (GoF) metrics as outputs-in addition to the synchronized phasor (or synchrophasor)-from a phasor measurement unit (PMU) to assess the performance quality of synchrophasor-based real-time applications, with specific focus on the accuracy of fault location along a transmission line. Typically, a PMU outputs quantities that describe the phasor-of-bes...Show More
Synchrophasor Standards have evolved since the introduction of the first one, IEEE Standard 1344, in 1995. IEEE Standard C37.118-2005 introduced measurement accuracy under steady state conditions as well as interference rejection. In 2009, the IEEE started a joint project with IEC to harmonize real time communications in IEEE Standard C37.118-2005 with the IEC 61850 communication standard. These e...Show More
This paper provides a summary of the IEEE C37.238-2011 standard, which specifies a subset of PTP parameters and options to provide global time availability, device interoperability, and failure management. This set of PTP parameters and options allows IEEE 1588-based time synchronization to be used in mission critical power system protection, control, automation, and data communication application...Show More
New system solutions need to be introduced and deployed carefully to ensure good value to the user, effective deployment of technology, and reduced risk of stranded assets. This paper presents a methodology consisting of three effective steps for successful deployment of production-grade systems designed to perform and support disaster recovery environment. The article focuses on the deployment of...Show More
This paper provides a summary of the IEEE C37.238-2011 standard, which specifies a subset of PTP parameters and options to provide global time availability, device interoperability, and failure management. This set of PTP parameters and options allows IEEE 1588-based time synchronization to be used in mission critical power system protection, control, automation, and data communication application...Show More
The evaluation of optical instrument transformers for on-site calibrations of high voltage power/energy measurement systems, including synchrophasor systems, at power system voltages up to 245 kV and currents up to 5,000 A will be presented.Show More
Various voltage and current sensing solutions including optical sensors, air-core coil based sensors, resistive-capacitive dividers, and hybrid solutions have gained increasing interest for use in the digital power grid. These sensors offer many attractive features including safe design, high accuracy and linearity, wide bandwidth, smaller size, and potentially low cost. Here, we will explore seve...Show More
Recent investments in the Synchrophasor technology have energized the industry and a significant number of Phasor Measurement Units (PMUs) are being deployed. By some estimates, just in North America, the number of PMU installations is expected to grow five-fold-from approximately 200 today to over a 1000. The first step in PMU deployment is a clear roadmap of the process for selecting the locatio...Show More
Various voltage and current sensing solutions including optical sensors, air-core coil based sensors, resistive-capacitive dividers, and hybrid solutions have gained increasing interest for use in the digital power grid. These sensors offer many attractive features including safe design, high accuracy and linearity, wide bandwidth, smaller size, and potentially low cost. Here, we will explore seve...Show More