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Distributed State Estimator Advances and Demonstration

A.P. Sakis Meliopoulos, George J. Cokkinides, Floyd Galvan, and Bruce Fardanesh
2008 Proceedings of the 41st Annual Hawaii International Conference on System Sciences (HICSS 2008)  
The approach has been implemented to two subsystems of two substations each. This paper describes the overall approach and provides results from the two pilot implementations.  ...  The reasons for this performance have been investigated and have been reported in earlier papers.  ...  This is a superior performance when compared to the traditional state estimator. Conclusions This paper presented recent work and advances in the SuperCalibrator concept.  ... 
doi:10.1109/hicss.2008.127 dblp:conf/hicss/MeliopoulosCGF08 fatcat:fig7azzhu5g33oh3rwxiiuj4dm

Visualization and Characterization of Stability Swings via GPS-Synchronized Data

George Cokkinides, A. Sakis Meliopoulos, George Stefopoulos, Ramiz Alaileh, Apurva Mohan
2007 2007 40th Annual Hawaii International Conference on System Sciences (HICSS'07)  
Presently, PMU data precision from substation installed devices is practically unknown. On the other hand, specific applications of PMU data require specific accuracy of data.  ...  GPS-synchronized equipment (PMUs) is in general higher precision equipment as compared to typical SCADA systems.  ...  Acknowledgments The work reported in this paper has been partially supported by the NSF Grant No. 000812, PSERC project S-25 and by the CTC project. This support is gratefully acknowledged.  ... 
doi:10.1109/hicss.2007.607 dblp:conf/hicss/CokkinidesMSAM07 fatcat:fhbao4iqxbazte6ben647flgwe

A vision of smart transmission grids

Zhenhua Jiang, Fangxing Li, Wei Qiao, Hongbin Sun, Hui Wan, Jianhui Wang, Yan Xia, Zhao Xu, Pei Zhang
2009 2009 IEEE Power & Energy Society General Meeting  
The features and functions of each of the three functional components as well as the enabling technologies to achieve these features and functions are discussed in detail in the paper.  ...  (S'05-M'08) received the Ph.D. degree in electrical engineering from Georgia Institute of Technology, Atlanta in 2008.  ...  grids; on the other hand, the existing girds lack enough compatibility to accommodate the implementation of spear-point technologies in the practical networks.  ... 
doi:10.1109/pes.2009.5275431 fatcat:jyyy6jteyncizbxptn5guo362e

Colloquium: Search for a drifting proton-electron mass ratio fromH2

W. Ubachs, J. Bagdonaite, E. J. Salumbides, M. T. Murphy, L. Kaper
2016 Reviews of Modern Physics  
Attempts to interpret the results from these 10 H_2 absorbers in terms of a spatial variation of μ are currently hampered by the small sample size and their coincidental distribution in a relatively narrow  ...  The methods and results of the laboratory molecular spectroscopy of H_2, in particular the laser-based metrology studies for the determination of rest wavelengths of the Lyman and Werner band absorption  ...  to implement the aforementioned methods in extragalactic studies at high precision.  ... 
doi:10.1103/revmodphys.88.021003 fatcat:phxtyvbh6naivm2tvzwrspzgnm

Fundamental physics with Espresso: Towards an accurate wavelength calibration for a precision test of the fine-structure constant

T. Schmidt, P. Molaro, M. Murphy, C. Lovis, G. Cupani, S. Cristiani, F. Pepe, R. Rebolo, N. Santos, M. Abreu, V. Adibekyan, Y. Alibert (+8 others)
2020 Astronomy and Astrophysics  
A substantial advance in the field is therefore expected from the new ultra-stable highresolution spectrograph Espresso, which was recently installed at the VLT.  ...  different steps involved in the wavelength calibration process.  ...  The authors thank the anonymous referee for helpful comments. TMS would like to thank Rafael Probst and Tilo Steinmetz for their support regarding the Espresso LFC system.  ... 
doi:10.1051/0004-6361/202039345 fatcat:4agsqwqnxngbbeh6bchfl3uih4

Size and Shape of (11351) Leucus from Five Occultations

Marc W. Buie, Brian A. Keeney, Ryder H. Strauss, Ted E. Blank, John G. Moore, Simon B. Porter, Lawrence H. Wasserman, Robert J. Weryk, Harold F. Levison, Catherine B. Olkin, Rodrigo Leiva, Jerry E. Bardecker (+67 others)
2021 The Planetary Science Journal  
For this work we developed a method to correct for differential refraction, accounting for the difference in color between the target object and the reference stars for astrometry derived from ground-based  ...  The actual shape of the object is only roughly elliptical in profile at each epoch. Significant topography is seen with horizontal scales up to 30 km and vertical scales up to 5 km.  ...  This level of sophistication has not yet been implemented in the processing pipeline. Instead, we had to implement a post-processing approximation.  ... 
doi:10.3847/psj/ac1f9b fatcat:nzf3qrq4ozbdraj4mxawqfnnnq