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Inicio  /  Energies  /  Vol: 7 Núm: 11Pages Par: Novembe (2014)  /  Artículo
ARTÍCULO
TITULO

A Grid Voltage Measurement Method for Wind Power Systems during Grid Fault Conditions

Cheol-Hee Yoo    
Il-Yop Chung    
Hyun-Jae Yoo and Sung-Soo Hong    

Resumen

Grid codes in many countries require low-voltage ride-through (LVRT) capability to maintain power system stability and reliability during grid fault conditions. To meet the LVRT requirement, wind power systems must stay connected to the grid and also supply reactive currents to the grid to support the recovery from fault voltages. This paper presents a new fault detection method and inverter control scheme to improve the LVRT capability for full-scale permanent magnet synchronous generator (PMSG) wind power systems. Fast fault detection can help the wind power systems maintain the DC-link voltage in a safe region. The proposed fault detection method is based on on-line adaptive parameter estimation. The performance of the proposed method is verified in comparison to the conventional voltage measurement method defined in the IEC 61400-21 standard.

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