Harmonic impedance and harmonic source determination based on field measurements

• Author / Creator

  Nino Hernandez, Edwin Enrique

• Harmonic impedance characterizes the voltage response of a power system when it is subjected to the influence of high-frequency currents. The impedance is a key parameter of a power network and must be known to diagnose power system problems caused by high-frequency disturbances and to design disturbance-mitigation measures.

  Unfortunately, determining an operating power system’s harmonic impedances is very difficult; they must be measured when the system is energized. In fact, how to measure a power system’s high-frequency impedances has been a challenging and frequent research topic in the power engineering field.

  This thesis presents a measurement methodology that can determine the harmonic impedances and sources at both sides of utility-customer interface. This methodology is applicable to single-phase three-wire systems under energized conditions. A potential application of the method is to determine the harmonic contributions of the supply system and its customers at the interface points.

• Subjects / Keywords

  • Field measurements
  • Harmonic impedance
  • Harmonic sources
  • Harmonics
  • Power Quality

• Graduation date

  Spring 2010

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3SG7G

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.