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Energies 2014, 7(11), 7732-7745; doi:10.3390/en7117732

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

1
School of Electrical Engineering, Kookmin University, 861-1, Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Korea
2
Samsung Heavy Industries, 493 Banweol-dong, Hwasung, Gyoenggi-do 445-330, Korea
*
Author to whom correspondence should be addressed.
Received: 18 August 2014 / Revised: 11 November 2014 / Accepted: 12 November 2014 / Published: 20 November 2014
(This article belongs to the Collection Wind Turbines)
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Abstract

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. View Full-Text
Keywords: LVRT; voltage measurement; wind power system; grid codes LVRT; voltage measurement; wind power system; grid codes
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yoo, C.-H.; Chung, I.-Y.; Yoo, H.-J.; Hong, S.-S. A Grid Voltage Measurement Method for Wind Power Systems during Grid Fault Conditions. Energies 2014, 7, 7732-7745.

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