An experimental field study of the grounding system response of tall wind turbines to impulse surges

作者：Gazzana Daniel S^*; Smorgonskiy Alexander; Mora Nicolas; Sunjerga Antonio; Rubinstein Marcos; Rachidi Farhad

来源：Electric Power Systems Research, 2018, 160: 219-225.

DOI：10.1016/j.epsr.2018.02.020

• Grounding impedance
• In situ measurements
• Numerical simulation
• Wind turbine

In this work, an experimental investigation of the grounding system behavior of tall wind turbines in both time and frequency domains is presented. Two scenarios were considered: in the first one, measurements were carried out on the grounding system embedded in the wind turbine foundation, before assembly of the wind turbine itself; in the second one, the complete wind turbine (tower, nacelle and blades) was included. The study also presents an enhanced signal processing technique for noise cancelation in a harsh electromagnetic environment. In the analysis, the frequency dependence of the grounding impedance was evaluated and a numerical simulation in steady state was performed. The simulation model leads to a satisfactory representation of the studied system. Preliminary results show that the evaluated grounding impedance is not significantly affected by the presence of the complete wind turbine at the evaluated frequencies.

• 出版日期2018-7