| 一种新型风电电压跌落检测方法的研究 |
| |
| 引用本文： | 吴雷,夏楠,周怡.一种新型风电电压跌落检测方法的研究[J].电力电子技术,2012,46(8):32-33. |
| |
| 作者姓名： | 吴雷 夏楠 周怡 |
| |
| 作者单位： | 江南大学,电气自动化研究所,江苏无锡214122 |
| |
| 摘 要： | 随着风电并网的发展,电网对电能质量的要求越来越严格,这就要求风力发电机组具有低电压穿越(LVRT)能力,首先就突出了如何应对电压跌落的重要性.根据矢量检测原理,设计了一种锁相环(PLL)来检测电压跌落.由于产生的负序分量危害很大,所以在滤波环节利用陷波器分离正负序分量,为了弥补响应稍慢的不足,在控制中引入谐振环节控制负序分量.仿真和实验表明,该方法检测响应快,能快速检测出电压跌落,并且消除了负序影响,减少了系统延时,同时具有一定的LVRT能力.
|
| 关 键 词： | 锁相环 电压跌落 低电压穿越 正负序分量 |
A New Detection Method of Wind Farm Voltage Sag |
| |
| WU Lei
,
XIA Nan
,
ZHOU Yi.A New Detection Method of Wind Farm Voltage Sag[J].Power Electronics,2012,46(8):32-33. |
| |
| Authors: | WU Lei XIA Nan ZHOU Yi |
| |
| Affiliation: | (Jiangnan University,Wuxi 214122,China) |
| |
| Abstract: | With the development of the grid-connected wind farm,the requirement is more and more strict.The generator system must have some ability of low voltage ride through,therefore,it is important to control voltage sag.According to the vector,voltage sag is tested.The harm of negative sequence is great.A notch filter is used to separate the positive and negative sequence.In order to response more quickly,the resonance is pulled in to control the negative sequence. Matlab/Simulation and experimental results prove that system responses quickly,the negative sequence is removed. |
| |
| Keywords: | phase locked loop voltage sag low voltage ride through positive and negative sequence |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
