Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Frequency Scan"”.
-
Frequency Scan–Based Mitigation Approach of Subsynchronous Control Interaction in Type-3 Wind Turbines
… of SSCI. The work expands on the concept of frequency scan to be able to use it in an on-line setting with its output data used to mitigate SSCI through the modification of wind turbine parameters. Multiple frequency scans are conducted using PSCAD/EMTDC software to build a lookup table and …
-
Improved HVdc dynamic performace via phase locking to virtual Thévenin voltage
… as VSC-HVdc systems. In the LCC-HVdc system, a frequency scan of the system shows the use of the IC-PLL reduces the effective resonant impedance of the system, and therefore increases system’s immunity to the harmonic instability at low order frequencies. In the VSC-HVdc system, the robust …
-
Fully Distributed Multi-parameter Sensors Based on Acoustic Fiber Bragg Gratings
… fast interrogation method is developed to avoid frequency scan, reducing both the system response time (from 3min to <1ms) and total cost. Since acoustic wave propagates with low attenuation along varieties of solid materials (metal, silica, sapphire, etc.), AFBG can be fabricated on a number of …
-
Decision theory process for making a mitigation decision on harmonic resonance in power systems
… harmonic analysis software package is used and a frequency scan study is conducted to generate a resonance curve. Resonant points are then compared to the harmonics in the system. If there is coincidence, the technique of de-tuning is applied to overcome overlapping and to choose the capacitor …
-
Design and operation of Low Frequency AC (LFAC) transmission system for connecting offshore wind farms
… solution for distances lower than 100km;The Low Frequency AC (LFAC) technology can provide an attractive transmission solution for exporting power from vast and remote OWPPs within a distance range of 80-300km. The basic idea of the LFAC system is to use lower AC frequency to reduce the effective …