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Search Publications by: Thomas L. Nelson (Fed)

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Displaying 1 - 25 of 29

A NIST Testbed for Examining the Accuracy of Smart Meters under High Harmonic Waveform Loads

May 7, 2019
Author(s)
Richard L. Steiner, Michael P. Farrell, Shannon Edwards, Thomas L. Nelson, Joni Ford, Sumaiyah Sarwat
Household and industrial electrical energy measurements are advancing into a Smart Grid stage, using solid-state watthour meters with communication capability, called Smart meters. As electrical products become heavily based on solid-state designs, such as

Simultaneous Double Waveform Synthesis with a Single Programmable Josephson Voltage Standard

July 9, 2016
Author(s)
Alain Rufenacht, Anna Fox, Paul Dresselhaus, Charles J. Burroughs, Samuel P. Benz, Bryan C. Waltrip, Thomas L. Nelson
We have recently demonstrated new 2 V PJVS devices configured with two voltage outputs and two sets of least significant bits in order to simultaneously generate two independent stepwise output waveforms. This development improves upon our previous

NIST Framework and Roadmap for Smart Grid Interoperability Standards, Release 3.0

October 1, 2014
Author(s)
Chris Greer, David A. Wollman, Dean Prochaska, Paul A. Boynton, Jeffrey A. Mazer, Cuong Nguyen, Gerald FitzPatrick, Thomas L. Nelson, Galen H. Koepke, Allen R. Hefner Jr., Victoria Yan Pillitteri, Tanya L. Brewer, Nada T. Golmie, David H. Su, Allan C. Eustis, David Holmberg, Steven T. Bushby
Section 1305 of the Energy Independence and Security Act (EISA) of 2007 (Pub. L. 110-140) directs NIST ‘‘to coordinate the development of a framework that includes protocols and model standards for information management to achieve interoperability of

Towards Timely Intelligence in the Power Grid

February 25, 2013
Author(s)
YaShian Li-Baboud, Julien M. Amelot, Dhananjay Anand, Gerard N. Stenbakken, Thomas L. Nelson, James Moyne
One of the key lessons learned from the 2003 Northeast Blackout in the United States was the need for improved timing. The problem began as an isolated issue, but cascaded through the Northeastern grid. Timely situational awareness would likely have

NIST Framework and Roadmap for Smart Grid Interoperability Standards, Release 2.0

February 16, 2012
Author(s)
George W. Arnold, Gerald FitzPatrick, David A. Wollman, Thomas L. Nelson, Paul A. Boynton, Galen H. Koepke, Allen R. Hefner Jr., Cuong Nguyen, Jeffrey A. Mazer, Dean Prochaska, Marianne M. Swanson, Tanya L. Brewer, Victoria Yan Pillitteri, David H. Su, Nada T. Golmie, Eric D. Simmon, Allan C. Eustis, David Holmberg, Steven T. Bushby, Michael D. Janezic, Ajitkumar Jillavenkatesa
The Energy Independence and Security Act (EISA) of 2007 requires that NIST develop a framework of standards for the Smart Grid. This document is the second release of the framework first published in January, 2010. It covers the activities and outputs of

NIST COORDINATION OF SMART GRID INTEROPERABILITY STANDARDS

August 9, 2010
Author(s)
David A. Wollman, Gerald FitzPatrick, Paul A. Boynton, Thomas L. Nelson
The National Institute of Standards and Technology has efforts underway to accelerate the development of interoperability standards to support the future modernized "Smart Grid" electric grid or energy delivery network characterized by a two-way flow of

Regarding Electric Energy Savings, Power Factors, and Carbon Footprints: A Primer

October 31, 2009
Author(s)
Martin Misakian, Thomas L. Nelson, William E. Feero
A short primer is presented which describes the underlying physical theory of certain devices that reduce the current drawn from power distribution lines by improving the power factor of residential electric circuits. A brief discussion is provided of the

AC Power Standard Using a Programmable Josephson Voltage Standard

April 1, 2009
Author(s)
Bryan C. Waltrip, Bo Gong, Thomas L. Nelson, Yicheng Wang, Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus
This paper describes the implementation of a new quantum-based system for the generation of 120 V rms, 5 A rms, sinusoidal, active and reactive power over the 50 Hz to 400 Hz frequency range. The system accurately relates the spectral amplitudes and phases

Precision Differential Sampling Measurements of Low-Frequency Synthesized Sine Waves with an AC Programmable Josephson Voltage Standard

April 1, 2009
Author(s)
Alain Rufenacht, Charles J. Burroughs, Samuel P. Benz, Paul D. Dresselhaus, Bryan C. Waltrip, Thomas L. Nelson
We have developed a precision technique to measure sine wave sources with the use of a quantum-accurate ac programmable Josephson voltage standard. This paper describes a differential method that uses an integrating sampling voltmeter to precisely

Precision Differential Sampling Measurements of Low-Frequency Voltages Synthesized with an AC Programmable Josephson Voltage Standard

June 9, 2008
Author(s)
Alain Rufenacht, Charles J. Burroughs, Samuel P. Benz, Paul D. Dresselhaus, Bryan C. Waltrip, Thomas L. Nelson
Sampling is a promising technique to compare the stepwise-approximated sine waves synthesized by an AC Programmable Josephson Voltage Standard to the sinusoidal voltages of a secondary source at low frequencies (a few hundred Hz or less). This paper

Development of a 60 Hz Power Standard using SNS Programmable Josephson Voltage Standards

April 7, 2008
Author(s)
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Bryan C. Waltrip, Thomas L. Nelson, J. Williams, D. Henderson, P. Patel, Luis Palafox, Ralf Behr
We are implementing a new standard for 60 Hz power based on precision sinusoidal reference voltages from two independent Programmable Josephson Voltage Standards (PJVS) (one for voltage and one for current). The NIST PJVS systems use series arrays of

Reference Values for Dynamic Calibration of PMUs

January 7, 2008
Author(s)
Gerard N. Stenbakken, Thomas L. Nelson, Ming Zhou, Virgilio A. Centeno
This paper discusses measurements of the dynamic performance of electric power Phasor Measurement Units, PMUs, and their relation to the requirements of the IEEE Synchrophasor Standard C37.118-2005. In particular, it proposes a new method for monitoring

Static Calibration and Dynamic Characterization of PMUs at NIST

June 1, 2007
Author(s)
Gerard N. Stenbakken, Thomas L. Nelson
This paper describes the development of two test systems at NIST aimed at improving the calibration and characterization of Coordinated Universal Time (UTC) synchronized electric power instrumentation. Reference to UTC is used to meet the need for precise

Development of a 60 Hz Power Standard using SNS Programmable Josephson Voltage Standards

July 14, 2006
Author(s)
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Bryan C. Waltrip, Thomas L. Nelson, J. Williams
We are implementing a new standard for 60 Hz mains power based on precision sinusoidal reference voltages from two independent Programmable Josephson Voltage Standards (PJVS) (one for voltage and one for current). Our NIST PJVS systems are based on

An International Comparison of 50/60 Hz Power (1996-1999)

April 1, 2001
Author(s)
Nile M. Oldham, Thomas L. Nelson, R. Bergeest, G. Ramm, R. Carranza, A. C. Corney, M. Gibbes, Gregory Kyriazis, H. Laiz, L. X. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright
An international comparison of 50/60 Hz power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen

International Comparison of 50/60 Hz Power (1996-1999)

May 1, 2000
Author(s)
Nile M. Oldham, Thomas L. Nelson, R. Bergeest, R. Carranza, M. Gibbes, K Jones, Gregory Kyriazis, H. Laiz, L. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright
An International Comparison of 50/60 Hz Power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen

Early Streamer Emission Lightning Protection Systems: An Overview

January 1, 2000
Author(s)
Richard J. Van Brunt, Thomas L. Nelson, Ken L. Stricklett
Early streamer emission (ESE) lightning protection systems are a relatively new approach to the perennial problem of lightining damage, and these systems may hold promise for a more effective protection against lighting. However, the scientific and

Extension of Voltage Range for Power and Energy Calibrations

April 1, 1999
Author(s)
O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick
A special purpose ac voltage divider system with ratios of 600, 480, 360, 277, and 240 V to 120 V has been developed to extend the range of primary electric power calibrations from 120-600 V at 50 and 60 Hz. The developmental goal has been to realize ac

A System to Measure Current Transducer Performance

July 1, 1998
Author(s)
Bryan C. Waltrip, Thomas L. Nelson
A special purpose ac current transducer measurement system capable of intercomparing transducers with ac output voltage ratios from 1:1 to 50:1 has been developed to extend the range and accuracy of current transformer, current shunt, and mutual inductor