The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The experiment result shows that the time-frequency method based on EMD can effectively extract the feature of unbalanced fault signal and is proper for non-frequency modulation signal procession.
研究结果表明：基于经验模式分解的时频分析方法可以很有效地提取到非平稳故障特征信号，是一种适合于非线性信号处理的方法。
In this program the voltage and current of simultaneous faults or unbalanced power system are calculated by solving the simultaneous equations of multi-port network and of the fault boundary.
本程序应用多端口网络方程和故障端口边界方程联立求解的方法，计算电力系统各种多重故障及任意不对称运行的电压和电流。
Ways of balancing the phase current of an induction motor operating with unbalanced supply and fault diagnostics of the thyristors are discussed.
提出了在异步电动机供电不平衡的情况下平衡相间电流的方法，给出了晶闸管故障检测的方法。
It is immune from the unbalanced status of network and the values of earthed resistance. To the complicated intermittent arc-earth fault, the proposed method also works well.
该方法不受电网平衡情况和接地电阻大小的影响，对复杂的间歇性电弧接地故障同样有效。
After that equaliser we took back the initiative and wanted the victory, so we poured forward and became a little unbalanced, but I cannot fault my team for anything.
比分扳平后队员们重拾进取之心想取得胜利，所以球队大举进攻有些失衡，但我不会责怪队员们。
The wind power converter must possess abilities of Low voltage Ride through (LVRT), available operation with unbalanced voltage fault and adjusting active as well as reactive power.
风电变流器在国产化的过程中也必须要具有低电压穿越、不对称故障下运行的能力和动态无功、有功功率的调节能力。
Voltage sag is a crucial power quality problem. Due to the unbalance fault present in occurrence of sags, it is more complicated to deal with the unbalanced voltage sag.
电压暂降作为一种电能质量问题，由于不对称故障的存在，使处理不对称电压暂降变得复杂。
At home we become too unbalanced if we don't go ahead, and this is a fault. We have to win more balls and risk less.
一旦我们不能很快进球，场上的局面就会失去平衡，这是个错误，我们必须赢得更多的球权，降低危险。
At home we become too unbalanced if we don't go ahead, and this is a fault. We have to win more balls and risk less.
一旦我们不能很快进球，场上的局面就会失去平衡，这是个错误，我们必须赢得更多的球权，降低危险。
应用推荐