Results 231 to 240 of about 13,138 (285)
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PMUs [phasor measurement unit]
IEEE Potentials, 1994In the spring of 1993, a major new 500 kV transmission line was put in service in Northern California. Test engineers initiated a series of artificial short-circuit faults to test the line installation. As an experiment, the steady-state and transient responses of the power system were recorded.
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Micro Phasor Measurement Unit Phasor Estimation by off-Nominal Frequency
2018 IEEE International Conference on Smart Energy Grid Engineering (SEGE), 2018Due to the high sampling rate of the power signals by Micro Phasor Measurement Units (μPMUs) tight restrictions on computing time of different algorithms are imposed. Especially when dealing with Phasor estimation by off-nominal frequency. Sampling the power signal with a frequency which is a multiple of the instantaneous power frequency is used to fix
George Daoud +2 more
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Islanding detection with Phasor Measurement Units
2014 67th Annual Conference for Protective Relay Engineers, 2014This paper briefly discusses the challenges related to the Islanding operation in power systems and presents different methods to detect the islanding condition with an example of photovoltaic applications. Furthermore, it proposes a secure method of islanding detection using synchrophasors.
Jorge Cardenas +3 more
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Phasor measurement units: Functionality and applications
2009 Power Systems Conference, 2009Operating of electric power systems is becoming more and more complex and is posing more and more challenges every day as they are operated close to their stability limits. Electrical power systems are expending (renewable energy source RES, distributed generation DG, independent power producers IPPs, etc.
D. Tholomier, H Kang, B Cvorovic
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Dynamic Phasor Measurement Unit Test System
2007 IEEE Power Engineering Society General Meeting, 2007This paper presents the plans and progress towards the development of a dynamic phasor measurement unit (PMU) performance test system at NIST. We describe an algorithm for taking time-synchronized samples of single-phase voltage and current power signals and calculating their dynamic parameters, in particular the signal magnitude, phase, frequency, and
Gerard Stenbakken, Ming Zhou
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Precision measurement system for the calibration of Phasor Measurement Units
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016), 2016Phasor measurement units (PMUs) are used for monitoring, protection, and control of smart grids. Characterization of PMUs to national standards of measurement is important to assure reliability and consistency of PMUs across the industry and is required by documentary standards.
Georgakopoulos, Dimitrios +1 more
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Application of phasor & frequency estimation techniques in phasor measurement unit
2016 7th India International Conference on Power Electronics (IICPE), 2016The real time high accuracy measurement of waveform phasors is one of the many open challenges that need to be addressed for monitoring of power grids. In the paper accuracy of Discrete Fourier Transform (DFT) and Taylor Expansion Weighted Least Square (TWLS) phasor estimation techniques are compared using single phase Phasor Measurement Unit (PMU ...
Mansi Vats, Sangeeta Kamboj
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Online Verification System for Phasor Measurement Units
2020 Conference on Precision Electromagnetic Measurements (CPEM), 2020In this paper, a portable standard is proposed for allowing online PMU calibrations without service interruption. This system is connected in parallel with the under test PMU, using current and voltage sensors that do not need any disconnection of the PMU.
D. Slomovitz +5 more
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Wide-Area Measurement Systems and Phasor Measurement Units
2020Wide Area Measurement Systems (WAMS) is a collective technology to monitor power system dynamics in real time, identify system stability related weakness and helps to design and implement counter measures. It uses a global positioning system(GPS) satellite signal to time synchronize from phasor measurement units (PMUs) at important nodes in the power ...
M. Maheswari +2 more
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Implementation Techniques for Frequency Phasor Estimation in Phasor Measurement Units (PMUs)
2018 3rd International Conference On Internet of Things: Smart Innovation and Usages (IoT-SIU), 2018For declamatory scale execution of wide area measurement systems (WAMS) using synchronizedphasor measurement units (PMUs) and phasor data concentrators (PDCs),gives a new direction to the power systems in terms of protection, monitoringand controlling. PMU technology provides the both magnitude and the phase angle in real time with sure accuracy.
Alok Jain +3 more
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