The wide area monitoring system (WAMS) is considered a pivotal component of future electric power grids. As pilot WAMS that has been operated for more than decade, the frequency network FNET/GridEye makes use hundreds global positioning system-synchronized phasor measurement sensors to capture increasingly complicated grid behaviors across interconnected systems. In this paper, overviewed and its operation experiences in are presented. Particularly, implementation number data analytics...

With the aid of global positioning system (GPS), synchronized measurement devices (SMDs) are increasingly deployed across power systems to monitor status electric grids by providing accurate data along with unified time stamps. Unfortunately, GPS receivers tend lose signal lock when certain uncontrollable and unpredictable factors arise. In order investigate presence loss (GSL) issues on devices, analysis is performed historical from both phasor concentrators FNET/GridEye servers. Meanwhile,...

Wide-area monitoring systems (WAMS) are beincreasingly vital for enhancing power grid operators' situational awareness capabilities. As a pilot WAMS that was initially deployed in 2003, the frequency network FNET/GridEye uses GPS-time-synchronized monitors called fredisturbance recorders (FDRs) to capture dynamic behaviors. Over past ten years, large number of publications have been reported. In this paper, most recent developments sensors, data centers, and analytics applications reviewed....

The distribution-level electric network frequency (ENF) extracted from an power signal is a promising forensic tool for multimedia recording authentication. Local characteristics in ENF signals recorded different locations act as environmental signatures, which can be potentially used fingerprint location identification. In this paper, reference database established using FNET/GridEye system. An identification method that combines wavelet-based signature extraction and feedforward artificial...

This study presents a method to locate power system disturbances using wide-area synchropahsor measurements. The merits of the proposed include robustness and ease visualisation. In addition, facilitates calculation electromechanical wave propagation speed distribution. Examples locating disturbance generating distribution are demonstrated FNET/GridEye system, distribution-level measurement system. Without losing generality, can be implemented in any other

This paper focuses on a novel method for successive approximation register analog to digital converter control in synchronized phasor measurement units (PMUs). To compensate the sampling time error caused by division remainder between desirable rate and oscillator frequency, variable interval is presented interlacing two integers under proposed criterion. The frequency of onboard monitored real-time using pulse per second (PPS) timing reference from global positioning system. adaptively...

Global positioning system (GPS)-based phasor measurement units (PMUs) are increasingly deployed in the power order to monitor grid status real time. Nevertheless, GPS receivers inside PMUs tend lose signal lock when certain uncontrollable and unpredictable factors arise. To address this issue, chip-scale atomic clock is proposed be used as a backup solution for time synchronization paper. It first ever reporting utilization of CSAC electric grid. Test results show that can work reliable...

Frequency stability of power systems becomes more vulnerable with the increase solar photovoltaic (PV). Energy storage provides an option to mitigate high PV impact. Using United States Eastern Interconnection (EI) and Texas (ERCOT) grid models, this paper investigates capabilities using energy improve frequency grids. The study result helps identify potential impact factors in utilizing regulate renewable

Integration of renewable generation sets high requirements for real-time situational awareness power systems. FNET/GridEye, a synchrophasor measurement network wide-area system monitoring has been assisting realtime and helping improve reliability in many grids 14 years. To aid operators confronting challenges from growing renewables, FNET/GridEye continues increasing its accuracy enhancing functionalities. This paper provides an overview on the mostrecent application improvements that help...

This paper analyzes the theoretical accuracy limitation of synchrophasors measurements on phase angle and frequency power grid. Factors that cause measurement error are analyzed, including sources in instruments grid signal. Different scenarios these factors evaluated according to normal operation status measurement. Based evaluation simulation, errors caused by each factor calculated discussed.

Data from Phasor Measurement Units (PMUs) inform powerful diagnostic tools that can help avert catastrophic failures in the power grid. Because of this, PMU measurement errors are particularly problematic, and it is critical to understand their impact. However, there limited understanding how much affect performance various synchrophasor-based applications, thus ability these applications fulfill users' requirements effectively also unclear. This paper examines internal external factors...

Data from phasor measurement units (PMUs) inform powerful diagnostic tools that can help avert catastrophic failures in the power grid. Because of this, understanding PMU errors is particularly valuable. This paper examines internal and external factors contributing to phase angle frequency gives a reasonable explanation for each. Based on these explanations, impact those several synchrophasor applications are analyzed: event location detection, oscillation islanding dynamic line rating.

Synchrophasors provide promising enhancement to the distribution system monitoring. However, different from transmission systems, systems are usually with higher noise, phase unbalance, and distributed energy resources. All of these could impair data quality distribution-level phasor measurement units (D-PMUs) thus deteriorate performance D-PMU based applications. Therefore, should be evaluated ensure effectiveness In this paper, factors in that jeopardize evaluated. The impact on...

The frequency estimated by the Phasor Measurement Unit (PMU) is a critical index of power system status and supports many smart grid applications. future features high penetration renewables more fast-moving electronics inverters but raises challenges to reliable estimation. This article presents three methods address these challenges. First, an enhanced zero-crossing algorithm was developed track fast-changing in dynamics. Second, we propose technology that can tolerate transient suppress...

With the aid of Global Positioning System (GPS), synchronized measurement devices (SMDs) are increasingly deployed across power systems to monitor status electric grids by providing accurate data along with unified time stamps. Unfortunately, GPS receivers tend lose signal lock when certain uncontrollable and unpredictable factors arise. In order investigate presence loss (GSL) issues on devices, analysis is performed historical from both phasor concentrators (PDCs) FNET/GridEye servers....

With the growing awareness of power system stability, wide area measurement (WAMS) has been widely studied and deployed. In WAMS, a phasor data concentrator (PDC) collects persists GPS-time-synchronized from hundreds units (PMU). Due to size complexity modern systems, number deployed PMUs increasing their becomes increasingly large. The large volume challenges analysis, knowledge discovery data. This paper takes pioneering distribution level WAMS- frequency monitoring network FNET/GridEye as...

The Electric Network Frequency (ENF) analysis of a digital recording is two-step process. First, an ENF extraction algorithm applied to the and second step comparing extracted target sequence subsequences contained in grid reference database. In this paper, new comparison created that can remove effects oscillator errors from comparisons. Another study have better understanding phenomenology by which sinusoidal signals find their way onto recordings. addition, uses both frequency phase angle...

This paper focuses on a novel method for successive approximation register (SAR) analog to digital converter (ADC) control in synchronized phasor measurement units (PMUs). To compensate the sampling time error caused by division remainder between desirable rate and oscillator frequency, variable interval is presented interlacing two integers under proposed criterion. The frequency of onboard monitored real-time using PPS timing reference from GPS. adaptively adjusted each second according...

To understand the reliability of PMUs, it is important to quantify effect errors on applications that use synchrophasor data. In this paper, a model PMU estimation error, based performance Annex C Reference Signal Processing Model IEEE Std. C37.118.1-2011 amended by C37.118.1a-2014, built generate impaired data for impairment evaluation. Based standard tests under different operation states and input disturbances, generic parameterized error real conditions.

This study presents the designs and implementations of a distribution level open-universal grid analyser (Open-UGA) platform. The proposed Open-UGA platform consists distribution-level phasor measurement units (PMUs), standard signal generator, router, server. Firstly, an overall introduction for software, hardware, server architectures is given. To give detailed design, block diagrams, flowcharts, printed circuit board photo are presented in detail. Then, four different types PMU algorithms...

Global Positioning System (GPS)-based phasor measurement units (PMUs) are increasingly deployed in the power system order to monitor grid status real time. Nevertheless, GPS receivers inside PMUs tend lose signal lock when certain uncontrollable and unpredictable factors arise. To address this issue, chip scale atomic clock (CSAC) is proposed be used as a backup solution for time synchronization paper. It first ever reporting utilization of CSAC electric grid. Test results show that can work...

During unintentional islanding, the isolated system is energized solely by a distributed energy resource (DER). If there no ground source, overvoltage may appear on un-faulted phase when fault occurs. Most DERs nowadays are inverter based, characteristics of which totally different from synchronous generators; thus, impact mechanism load and neutral resistor (NGR) change. This paper conducts comparative analysis between generators Inverter-Interfaced using sequence network. The simulation...