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Search Publications by: Gerald J. FitzPatrick (Assoc)

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Displaying 26 - 50 of 76

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

NIST Framework and Roadmap for Smart Grid Interoperability Standards, Release 1.0

January 10, 2010
Author(s)
George W. Arnold, David A. Wollman, Gerald FitzPatrick, Dean Prochaska, David Holmberg, David H. Su, Allen R. Hefner Jr., Nada T. Golmie, Tanya L. Brewer, Mark Bello, Paul A. Boynton
Under the Energy Independence and Security Act (EISA) of 2007, the National Institute of Standards and Technology (NIST) is assigned "primary responsibility to coordinate development of a framework that includes protocols and model standards for

Dissipation Factors of Fused-Silica Capacitors in the Audio Frequency Range

April 1, 2007
Author(s)
Yicheng Wang, Andrew D. Koffman, Gerald FitzPatrick
We describe dissipation factor measurements of 10 pF fused-silica capacitance standards from 50 Hz to 20 kHz, using a toroidal cross capacitor and a 10 pF nitrogen-filled capacitor as the references. The relative combined standard uncertainties are 0.56x10

Electron Drift in C4F6 and C4F6/Ar Mixtures

September 1, 2002
Author(s)
Amanda N. Goyettes, Yicheng Wang, Gerald FitzPatrick
We report measurements of electron drift velocities as a function of density-reduced electric field, w(E/N), for hexafluorobutadiene (C4F6) and mixtures of C4F6 with Ar. The w(E/N) for the mixtures of C4F6 with Ar can aid Boltzmann transport equation

Users' Guide to the NIST-High-Voltage Capacitance Ratio Bridge

March 28, 2001
Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
This TechNote has been written as a guide to the operation of and applications for the NIST Capacitor Ratio Bridge (CRB). The theory, design, and operating principles of the CRB, sources of measurement error, and principal applications are discussed in

Calibration of Dissipation Factor Standards

April 1, 1999
Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
Working standards for dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded precision resistor have been developed for calibration purposes. Precision conductance boxes have been built for use

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

Calibration of Dissipation Factor Standards

July 1, 1998
Author(s)
Eric D. Simmon, Gerald FitzPatrick, O. Petersons
Dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded resistor have been developed for calibration purposes. An analysis of these DF Standards, including precautions in their construction and

Extension of Voltage Range for Power and Energy Calibrations

July 1, 1998
Author(s)
O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick
A special purpose ac voltage divider system having voltage ratios of 600 V, 480 V, 360 V, and 240 V to 120 V has been developed to extend the voltage range of primary electric power calibrations from 120 volts to 600 volts at power frequencies of 50 and 60

Evaluation of High-Voltage Impulse Waveforms Using Model-Based Deconvolution

June 1, 1998
Author(s)
Gerald FitzPatrick, Eric D. Simmon, J. Lagnese
Accurate measurement of high voltage (hv) impulse waveforms is of critical importance in the testing of hv apparatus and for fundamental insulation studies. Quantifying the measurement system errors can be performed by following procedures recommended by