Wavelet-based signal processing for disturbance classification and measurement

A mobile crane for use on an offshore oil well platform, comprising parallel base beams adapted to span the capping beams of the platform, and a pedestal and a rotating upper works movably mounted on the base beams. A method is described for erecting a workover rig on the offshore platform by means of the crane, and for expeditiously erecting workover rigs on a plurality of platforms in succession.

[1]  M. Waclawiak,et al.  Indices for assessing utility distribution system RMS variation performance , 1998 .

[2]  D. D. Sabin,et al.  Quality enhances reliability [power supplies] , 1996 .

[3]  Shyh-Jier Huang,et al.  Application of Morlet wavelets to supervise power system disturbances , 1999 .

[4]  Pasquale Daponte,et al.  A measurement method based on the wavelet transform for power quality analysis , 1998 .

[5]  S. Santoso,et al.  Power quality disturbance data compression using wavelet transform methods , 1997 .

[6]  P. Pillay,et al.  Application of wavelets to model short-term power system disturbances , 1996 .

[7]  H. Wayne Beaty,et al.  Electrical Power Systems Quality , 1995 .

[8]  A. Y. Chikhani,et al.  Power quality detection and classification using wavelet-multiresolution signal decomposition , 1999 .

[9]  Thomas S. Key,et al.  Diagnosing Power Quality-Related Computer Problems , 1979, IEEE Transactions on Industry Applications.

[10]  Magdy M. A. Salama,et al.  Automated recognition system for classifying and quantifying the electric power quality , 1998, 8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227).

[11]  Edward J. Powers,et al.  Characterization of distribution power quality events with Fourier and wavelet transforms , 2000 .

[12]  M. D. Cox,et al.  Discrete wavelet analysis of power system transients , 1996 .

[13]  J. S. Mayer,et al.  Wavelets and electromagnetic power system transients , 1996 .

[14]  Tim Littler,et al.  Wavelets for the analysis and compression of power system disturbances , 1999 .

[15]  Gerald T. Heydt,et al.  Transient power quality problems analyzed using wavelets , 1997 .

[16]  F. Brouaye,et al.  Wavelets: a new tool for the resonant grounded power distribution systems relaying , 1996 .

[17]  S. Santoso,et al.  Power quality assessment via wavelet transform analysis , 1996 .

[18]  Weon-Ki Yoon,et al.  Power measurement using the wavelet transform , 1998, IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222).

[19]  John Douglas.  Solving problems of power quality , 1993 .

[20]  Ward Jewell,et al.  Pitfalls of electric power quality indices , 1998 .

[21]  Gene A. Tagliarini,et al.  Signal classification using wavelets and neural networks , 1996, Defense + Commercial Sensing.