Research for Electric Energy Systems [electronic resource].
- Gaithersburg, Md. : National Institute of Standards and Technology (U.S.), 1991. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (98 pages) : digital, PDF file
- Additional Creators:
- National Institute of Standards and Technology (U.S.), United States. Department of Energy. Office of Fissile Materials Disposition, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- This report documents the technical progress in investigations. The first investigation is concerned with the measurement of magnetic fields in support of epidemiogical and in vitro studies of biological field effects. NIST cohosted a workshop on exposure and biological parameters that should be considered during the vitro studies with extremely low frequency (ELF) magnetic and electric fields. Also, equations were developed to predict the magnetic field in a parallel plate magnetic field exposure system. The second investigation is concerned with two different activities: the detection of trace levels of S₂F₁₀ in SF₆ and the development of an improved stochastic analyzer for pulsating phenomena (SAPP). The detection of S₂F₁₀ in the presence of SF₆ using mass-spectrometric detection coupled to a gas chromatograph is difficult because of the similar mass spectra. A technique is described that enables the detection of S₂F₁₀ in gaseous SF₆ down to the ppb level using a modified gas chromatograph-mass spectrometer. The new system was applied to an investigation of the stochastic behavior of negative corona (Trichel pulses) and the effect of a dielectric barrier on these discharges. The third investigation is concerned with breakdown and prebreakdown phenomena in liquid dielectrics. The activity reported here was a study of negative steamers preceding electric breakdown in hexanes. Using the image preserving optical delay, the growth of the streamers associated with partial discharges at a point cathode are photographed at high magnification. The last investigation is concerned with the evaluation and improvement of methods for measuring fast transients in electrical power systems such as might be associated with an electromagnetic impulse. A compact resistive divider, NIST4, was designed. It is anticipated that this divider together with some Kerr electro-optical devices will be used as the reference system at NIST.
- Published through SciTech Connect., 06/01/1991., "nistir-4691", "DE92001714", Anderson, W.E., and National Inst. of Standards and Technology (NML), Gaithersburg, MD (United States). Electricity Div.
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