• Detecting instant of multiple faults on the transmission line and its types using time-frequency analysis 

      Na, Shweta; Kishor, Nand; Uhlen, Kjetil; Mohanty, Soumya R (Journal article; Peer reviewed, 2019)
      In a complex interconnected network, due to dynamic interaction between the AC networks, at the time of multiple occurrences of faults, the successful relay operation is threatened. For security and reliability of power ...
    • Event Detection and its Signal Characterization in PMU Data Stream 

      Negi, Sanjay Singh; Kishor, Nand; Uhlen, Kjetil; Negi, Richa (Journal article; Peer reviewed, 2017)
      The potential application of signal processing techniques is not only to detect the event but also to characterize them according to physical disturbance. In this paper, event detection and its characterization algorithm ...
    • Event signal characterization for disturbance interpretation in power grid 

      Negi, Sanjay S.; Kishor, Nand; Negi, Richa; Uhlen, Kjetil (Peer reviewed, 2018)
      This paper presents the signal processing approach to detect and characterize the physical events that occur in power system using PMUs signals. A small window is applied so that the extracted spectral features belong to ...
    • Identification of coherency and critical generators set in real-time signal 

      Schweta, NN; Kishor, Nand; Uhlen, Kjetil; Soumya, Mohanty (Journal article; Peer reviewed, 2017)
      For a reliable and stable operation of a power system network, it is important to monitor the dynamics of the system. For this purpose, in real system phasor measurement units (PMUs) have been installed to give information ...
    • Post-processing algorithmfor damped and step-change events detection in PMU signals 

      Negi, Sanjay Singh; Kishor, Nand; Uhlen, Kjetil; Negi, Richa (Chapter, 2017)
      The study presents an algorithm using signal processing techniques to screen PMUs data for events. The algorithm can be applied on multiple PMUs data for possible events detection and their display. The algorithm analyze ...
    • Signal processing for time-frequency representation of synchro-phasor data 

      Negi, Sanjay Singh; Kishor, Nand; Kumar, Avinash; Uhlen, Kjetil (Journal article; Peer reviewed, 2017)
      With increased number of phasor measurement units (PMUs) deployment in the power system, there is growing interest in real-time event detection. The study in this paper presents post-processing approach to map the event ...
    • Time-varying coherency study using TFC 

      Shweta, NN; Kishor, Nand; Uhlen, Kjetil; Mohanty, S. (Chapter, 2017)
      An assessment of the dynamic interactions between generators will provide valuable information which could improve control action and hence maintain stability in the interconnected system. The paper presents the study on ...