The Influence of Voltage Flicker for the Wind Generator upon Distribution System

One of the most important power quality issues is voltage flicker. Nowadays this issue also impacts the power system all over the world. The fact of the matter is that the more and the larger capacity of wind generator has been installed. Under unstable wind power situation, the variation of output current and voltage have caused trouble to voltage flicker. Hence, the major purpose of this study is to analyze the impact of wind generator on voltage flicker of power system. First of all, digital simulation and analysis are carried out based on wind generator operating under various system short circuit capacity, impedance angle, loading, and power factor of load. The simulation results have been confirmed by field measurements.

• Jin-Lung Guan
• Jyh-Cherng Gu
• Ming-Ta Yang
• Hsin-Hung Chang
• Chun-Wei Huang
• Shao-Yu Huang

• Wind Generator
• Voltage Flicker

<p>[1] G. Manchur and C. C. Erven, Development of A Model for Predicting Flicker from Electric Arc Furnaces&rdquo;, IEEE Trans. on Power Delivery, Vol. 7, No. 1, pp. 416-426, 1992. [2] G. C. Montanari, M. Loggini, A. Cavallini, L. Pitti, and D. Zaninelli, &ldquo;Arc-Furnace Model for Study of Flicekr Compensation in Electrical Networks&rdquo;, IEEE Trans. on Power Delivery, Vol. 9, No. 4, pp. 2026-2036, 1994. [3] J. C. Gu, C. J. Wu, and J. C. chiang, &quot;Effects of High Voltage Side Voltage Flicker Sources on Low Voltage Side Customers,&quot; Power Research Institute, Taiwan Power Company, 1994. [4] IEC 61400-21, 2001, Wind turbine generator systems-part 21: measurement and assessment of power quality characteristics of grid connected wind turbines. [5] IEEE Std 1547, Standard for Interconnecting Distributed Resources with Electric Power System, IEEE SCC21, 2003.</p>