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

Energies

Cheol-Hee Yoo¹  Il-Yop Chung¹  Hyun-Jae Yoo²  Sung-Soo Hong¹ 

[1] School of Electrical Engineering, Kookmin University, 861-1, Jeongneung-dong, Seongbuk-gu, Seoul 136-702, Korea; E-Mails:;Samsung Heavy Industries, 493 Banweol-dong, Hwasung, Gyoenggi-do 445-330, Korea; E-Mail:

关键词: LVRT;    voltage measurement;    wind power system;    grid codes;   

DOI  :  10.3390/en7117732

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.