Due to complexity of hydroelectric units vibration reasons, vibration fault is distinguished mainly by means of rotate speed experiment, load experiment and excitation experiment et al at present.
引起水电机组振动的原因复杂，目前主要是通过转速试验、负荷试验和励磁试验等试验手段来判别机组的振动故障。
I think the fault is probably electric (al) current.
我想故障可能与电流有关。
The result of simulation indicates that fault componentdifferential protection with capacitive current compensation has high sensitivity and good selectivity on al…
仿真结果表明，对于两端供电超高压长线，带电容补偿的故障分量相量差动保护具有明显地高灵敏度和选择性；
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