Wind Farm Operation and Grid Integration

Increasing wind power development in Alberta will lead to significant challenges to the Alberta electrical grid in terms of frequency control, short circuit level, interactions with surrounding systems such as High Voltage Direct Current systems (HVDCs), which is a relatively isolated grid that is without strong ties to other systems. In addition, from wind farm’s perspective, it is important that the Wind Turbine Generators (WTG) are working properly without early failure (on blades, gearboxes, generator bearings, power converters, etc.). For a large wind farm with hundreds of WTGs, the Operation and Maintenance (O&M) costs account for about 25% of the cost of wind power, while maintenance costs plus revenue loss due to downtime represents roughly 15% of the total cost of energy, and there is great cost reduction potential by enhancing the reliability of wind power generation system.

This project will deal with both the grid operation and wind farm operation issues. Research objective in this project include:

1) Study the grid impact of 30% wind power in Alberta

2) Investigate the interaction of wind farm and the surrounding system with HVDC and STATCOM (Static Synchronous Compensator) and develop coordinated control scheme.

3) Study the WTG interactions within a wind farm particularly under grid disturbance and develop damping approach.

4) Study the failure mechanism of key WTG components.

5) Development of WTG state monitoring and prognostics methods, and optimize wind farm operation and maintenance.

Publications, Activities, and Awards

  • A method for the fault diagnosis of power transformers based on support vector machine
  • A new support vector machine based intelligent method for power transformer fault diagnosis
  • A Novel Seven-Level Hybrid-Clamped (HC) Topology for Medium Voltage Motor Drives
  • Adaptive Mode Decomposition Methods and Their Applications in Signal Analysis for Machinery Fault Diagnosis: A Review with Examples
  • An enhanced morphology gradient product filter for bearing fault detection
  • An integrated approach for wind turbine gearbox fatigue life prediction considering instantaneously varying load conditions
  • Analysis and stability investigations of a dc power grid with dynamic loads
  • Copula-based time-frequency distribution analysis for planetary gearbox fault detection
  • Dynamic modeling of gearbox faults: A review
  • Dynamics Based Vibration Signal Modeling for Tooth Fault Diagnosis of Planetary Gearboxes
  • Effect of sliding friction on transient characteristics of a gear transmission under random loading
  • Effects of friction and stochastic load on transient characteristics of a spur gear pair
  • Prognostics of rolling element bearings with the combination of Paris law and reliability method
  • Series: Lecture Notes in Mechanical Engineering
  • Seven Level Hybrid Clamped (7L-HC) Converter in Medium Voltage Wind Energy Conversion Systems
  • Spectral negentropy based sidebands and demodulation analysis for planet bearing fault diagnosis
  • Three new models for evaluation of standard involute spur gear mesh stiffness