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Accession Number DE14-1119610
Title Smart Grid Monitoring and Control Concepts.
Publication Date Nov 2011
Media Count 17p
Personal Author S. N. Backhaus
Abstract Many electrical grid transients can be described by the propagation of electromechanical (EM) waves that couple oscilations of power flows over transmission lines and the inertia of synchronous generators. These EM waves can take several forms: large-scale standing waves forming inter-area modes, localized oscillations of single or multi-machine modes, or traveling waves that spread quasicircularly from major grid disturbances. The propagation speed and damping of these EM waves are potentially a powerful tool for assessing grid stability, e.g. small signal or rotor angle stability, however, EM wave properties have been mostly extracted from post-event analysis of major grid disturbances. Using a small set of data from the FNET sensor network, we show how the spatially resolved Green's function for EM wave propagation can be extracted from ambient frequency noise wi,thout the need for a major disturbance. If applied to an entire interconnection, an EM-wave Green's function map will enable a model-independent method of predicting the propagation of grid disturbances and assessing stability.
Keywords Electric power lines
Electromechanical waves
Green functions
Wave propagation

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 49 - Electrotechnology
Corporate Author Los Alamos National Lab., NM.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1416
Contract Number DE-AC52-06NA25396

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