MHD-EMP analysis and protection. Technical report. [MHD-EMP (magnetohydrodynamic-electromagnetic pulse)]
A large nuclear detonation at altitudes of several hundred kilometers above the earth distorts the earth's magnetic field and produces a strong magnetohydrodynamic-electromagnetic pulse (MHD-EMP). MHD-EMP is similar to solar geomagnetic storms in its global and low frequency (less than 1 Hz) nature except that it can be more intense with a shorter duration. It will induce quasi-dc currents in long lines. The MHD-EMP induced currents may cause large voltage fluctuations and severe harmonic distortion in commercial electric power systems. Several MHD-EMP coupling models for predicting the induced current on a wide variety of conducting structures are described, various simulation concepts are summarized, and the results from several MHD-EMP tests are presented. To mitigate the effects of MHD-EMP on a facility, long conductors must be isolated from the building, and the commercial power harmonics and voltage swings must be addressed. It is found that facilities can be protected against MHD-EMP by using methods which are consistent with standard engineering practices. MHD-EMP Interaction Analysis, Power Line Model, MHD-EMP Protection Guidelines, Transformer Test.
- Research Organization:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- OSTI ID:
- 5545496
- Report Number(s):
- AD-A-269647/4/XAB; CNN: DE-AC05-840R21400
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERIC EXPLOSIONS
CURRENTS
DATA
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRODYNAMICS
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
ENERGY SYSTEMS
EXPERIMENTAL DATA
EXPLOSIONS
FLUID MECHANICS
FORECASTING
GEOMAGNETIC FIELD
HARMONICS
HYDRODYNAMICS
INFORMATION
IONOSPHERIC EFFECTS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MECHANICS
MITIGATION
NUCLEAR EXPLOSIONS
NUMERICAL DATA
OSCILLATIONS
POWER SYSTEMS
PULSES
RADIATIONS
SAFETY
SIMULATION