风电机组低电压穿越测试相关技术研究

Research on Related Technologies of Wind Turbine LVRT Test

风电机组具备低电压穿越能力是风电大规模接入系统的前提保证之一,目前我国已经开展低电压穿越测试工作。介绍风电机组低电压穿越能力测试的内容及原理,并根据已有的风电机组低电压穿越测试经验对短路容量的选择、抽检测试中电压跌落深度的选择、机组励磁与并网装置(变流器)的低压穿越电路原理以及标准中有功恢复速度进行了分析。最后,对风电场风电机组的低电压穿越能力管理提出了一些建议。

Wind turbine with LVRT capability is one premise guarantee of the large-scale wind power access electric system, and the LVRT test work has been carried out currently. This article describes the wind turbine low voltage ride through capability test content and principle, and analyses the selection of the short circuit capacity, sampling test voltage dip depth selection, unit excitation and network device （converter） low pressure across the circuit schematic, active power recovery speed standard through the LVRT testing experience of the wind turbine. Finally, this article propounds some recommendations for wind turbine low voltage ride through capa- bility management.