Mitigation of voltage dips and swells in grid-connected wind energy conversion systems
Mitigation of voltage dips and swells in grid-connected wind energy conversion systems
复制标题
DOI：
10.4103/0377-2063.92267
复制
发表时间：
2009-11
期刊：
影响因子：
--
通讯作者：
M. Eskander;S. Amer
中科院分区：
文献类型：
--
作者：
M. Eskander;S. Amer
本文研究了风能转换系统(WECS)接入电网时抑制电压暂降和电压隆起的两种方法。两种抑制方法是动态电压调节器(DVR)和静态补偿器(STATCOM)。风能系统采用永磁同步发电机。众所周知，电压跌落会对PMSG产生不利影响，导致其速度无限提高。因此，需要快速降低电压跌落。研究和比较了DVR和STATCOM对电压下降和电压上升的响应。研究了故障恢复过程中和故障恢复后各系统的有功和无功行为。对电压跌落和电压波动的仿真结果表明，采用DVR的系统的谐波含量较少。然而，这两个系统对故障的反应是相当的。
This paper investigates two methods for mitigation of voltage dips and voltage swells in a grid to which a wind energy conversion system (WECS) is connected. The two mitigation methods are the dynamic voltage regulator (DVR), and the static compensator (STATCOM). The wind energy system employs permanent magnet synchronous generator (PMSG). It is well known that the voltage dips affect the PMSG adversely, leading to unlimited increase in its speed. Hence, quick voltage dip mitigation is required. The responses of both DVR and STATCOM to voltage dips as well as voltage swells are investigated and compared. Also the active and reactive power behaviors in each system during and after fault recovery are investigated. The simulation results compared for voltage dips and voltage swells show less harmonic contents for the system employing the DVR. However, the response of the two systems to faults are comparable.