哈尔滨大电机研究所 关键词] 双馈感应发电机；转子侧变换器；不对称跌落；负序电流 [gap=807]Key words: DFIG; rotor side converter; asymmetic dips; negative sequence of current
基于1个网页-相关网页
Harmonics, reactive power, voltage flicker and negative-sequence current of power grids can affect the power quality and harm the power equipment badly.
电网中存在谐波、无功、电压闪变及负序电流等问题，严重影响电能质量，危害电力设备。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.
针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。
应用推荐