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Showing 1 to 20 of 82 for “"Phasor Measurement Units"”.
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Enhancing Grid Reliability With Phasor Measurement Units
… smart grids". One example is the widely deployed phasor measurement units (PMUs), which enable generating time-synchronized measurements with high sampling frequency, and pave a new path to realize real-time monitoring and control in power grids. However,the massive data generated by PMUs raises …
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Spoofing GPS receiver clock offset of phasor measurement units
… of a spoofing attack on the GPS receiver of a phasor measurement unit (PMU). We formulate the attack as an optimization problem where the objective is to maximize the difference between the time offset of the PMU's receiver clock before and after the attack. Since the PMU uses this clock offset …
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Synchronized Phasor Measurement Units Applications in Three-phase Power System
Phasor Measurement Units (PMUs) are widely acknowledged as one of the most significant developments in the field of real-time monitoring of power system. By aligning time stamps of voltage and current phasor measurements, which are consistent with Coordinated Universal Time (UTC), a coherent …
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Open-Source Testbed to Evaluate the Cybersecurity of Phasor Measurement Units
The Phasor Measurement Unit provides clear data for ease of grid visibility. A major component of the device is the Global Positioning System (GPS) for time synchronization across the board. However, this device has become more susceptible to cyber-attacks such as spoofing. This paper constructs an …
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Phasor Measurement Units Applications Prioritization Based on Wide-Area Disturbance Events
Synchrophasor Measurement Units (PMUs) are devices that can not only measure but also time stamp voltage, current, frequency, among others. PMUs take these synchronized measurements as fast as 60 times per second; compared with the traditional 2-4 second SCADA measurements, PMUs bring a much clear …
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Optimal placement of phasor measurement units using the Advanced Matrix Manipulation algorithm
… the problem of the Optimal Placement scheme of Phasor Measurement Units in electrical power systems for State Estimation to facilitate improved monitoring and control of the system parameters. The research work done for this thesis begins with review of Supervisory Control and Data Acquisition …
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Event Detection and Visualization Based on Phasor Measurement Units for Improved Situational Awareness
… A new technique based on graphical processing units (GPUs), developed to allow rendering speeds to match the relatively fast data rate of PMUs, is presented, along with results demonstrating the marked increase in visualization speed. Some of the benefits of speeding up contouring are …
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The optimal placement of phasor measurement units and their effects on state estimation
Phasor measurement units (PMUs) are a key new technology for use in electric power systems as a backbone for sensing and measurement and to improve interface and decision support using instantaneous PMU data which will drive faster simulations and advanced visualisation tools that will help system …
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State and parameter estimation of power systems using phasor measurement units as bilinear system model
… have to be advanced to next level. Including of Phasor Measurement Units (PMUs) along with current SCADA (Supervisory Control and Data Acquisition) system is an essential step towards realization of smart grids. PMUs can give synchronized measurements of voltage and current phasors from the grid, …
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Attack resilient GPS based timing for phasor measurement units using multi-receiver direct time estimation
… power distribution systems are incorporating Phasor Measurement Units (PMUs) to measure the instantaneous voltage and current phasors at different nodes in the power grid. These PMUs depend on Global Positioning Systems (GPS) for precise time and synchronization. However, GPS civil signals are …
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Robust GPS-based timing for phasor measurement units based on single-receiver and multi-receiver position-information-aided vector tracking
… a major push by the power industry to utilize phasor measurement units (PMUs) for wide area monitoring and control. PMUs are considered to be one of the most critical technologies for the future and modernization of the power grid. This technology produces time-stamped voltage and current …
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Practical Implementation of a Security-Dependability Adaptive Voting Scheme Using Decision Trees
… this scheme can be implemented with a select few Phasor Measurement Units (PMUs) reporting positive sequence currents to a Phasor Data Concentrator (PDC). At the PDC, the state of the power system is defined as Stressed or Safe and a set of relays either vote or perform normal operation, …
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Inference, estimation, and prediction for stable operation of modern electric power systems
… from IEEE benchmark systems. Newly deployed Phasor Measurement Units (PMUs) are observing the presence of detrimental low frequency forced oscillations (FOs) in transmission grid networks. To begin this thesis, we address the problem of locating the unknown sources of these FOs.
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New Methods for Synchrophasor Measurement
… technology have spawned interest in the use of phasor measurement units to help create a reliable power system transmission and distribution infrastructure. Wide-area monitoring systems (WAMSs) utilizing synchrophasor measurements can help with understanding, forecasting, or even controlling the …
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A Practical Comprehensive Approach to PMU Placement for Full Observability
In recent years, the placement of phasor measurement units (PMUs) in electric transmission systems has gained much attention. Engineers and mathematicians have developed a variety of algorithms to determine the best locations for PMU installation. But often these placement algorithms are not …
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A Method for PMU-Based Reconfigurable Monitoring
… monitored in order to ensure stability. Phasor Measurement Units (PMUs) provide very good observation of a small area of a network, but their relatively high cost prevents them from being deployed at every point. Therefore, to monitor an entire network, State Estimation is still required. …
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Hardware implementation of an automatic adaptive centralized under frequency load shedding
… algorithm using industry grade hardware such as Phasor Measurement Units (PMUs), Synchrophasor Vector Processor (SVP) that resembles real time system operation. The study examines disturbance effects on the frequency at different disturbance locations. Each time the algorithm decisions are able …
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Quickest change detection with applications to line outage detection
… detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line …
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Big data in power systems: a statistical approach on synchrophasor application
Phasor Measurement Units (PMUs) are regarded as one of the most valuable device on the power system. PMUs, being devices that are found on buses of the power system, are capable of supplying both detailed and broad situational information. The data produced by PMUs, which are synchronized by GPS …
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Online Voltage Stability Monitoring and Control Using Limited Synchrophasor Measurements
… of voltage instability. With the application of Phasor Measurement Units (PMUs), dispatchers are able to monitor long term voltage stability in a real time operational environment. This research addresses the critical issues by proposing three different methods. Voltage Stability Assessment Index …
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