发电机振荡对其本身及用电系统极为不利。
Generator oscillation is extremely adverse for itself and power system.
发电机振荡问题是很复杂的，这里只针对同步发电机稳态小振荡进行分析。
Generator oscillation problem is very complex. Here, we only analyze steady-state small oscillation of synchronous generators.
直流联网对发电机速度信号具有迅速作出响应的能力并按需要提高和降低潮流以阻尼暂态振荡。
The DC interconnection has the ability to respond rapidly to generator speed signals and increase or decrease the power flow as needed to dampen the transient oscillations.
双绕组电抗器分流励磁发电机并列运行时会出现严重的振荡问题。
As parallel running of shunt-excited generators with double-wound reactor, a serious oscillation problem is faced.
同步发电机整流带反电动势负载时，当系统参数不匹配，在一定工况下，可能出现低频振荡。
For some operating conditions, a synchronous generator with a rectifier and back-EMF load maybe exhibit low-frequency oscillations when the system parameters do not match.
针对近年来电力系统低频振荡中出现的非线性奇异现象，阐述了发生这种现象的机理，并在文献1的基础上，把发电机的模型扩展到四阶。
For the nonlinear singularity phenomenon of power system, it is stated the mechanism of phenomenon. On the basis of references 1, the generator model is expanded to four dimensions.
恰当处理发电机失步振荡，是机网协调的重要问题。
Appropriately control of generator out-of-step oscillation is an important issue of generator-network harmonization.
认为发电机转速达到两倍临界转速附近，轴系发生了油膜振荡。
Thought that the generator rotational speed had achieved nearby two time of critical rotation speeds, the shafting has had the oil film vibration.
传统的PSS使用本地可测量的发电机电磁功率、转速等作为输入信号以抑制低频振荡。
The traditional PSS use the local signal such as the generator electromagnetism power or shaft speed as its input to restrain low frequency oscillation.
在同步发电机组调速器侧装设电力系统稳定器是抑制电力系统低频振荡的有效措施。
Fixing power system stabilizer on the governor of synchronous generator is an effective method to restrain low frequency oscillation.
采用测试信号法，通过计算发电机组的次同步电气阻尼特性，分析所设计的SEDC对发电机组次同步振荡的抑制效果。
By using test signal method, the sub-synchronous electrical damping characteristics of a generator and the impacts of the designed SEDC on the generators electrical damping are analyzed.
负荷越靠近发电机，系统电压将越不易发生振荡失稳，但鞍结分岔对应的最大功率传输极限将减小。
When the load is near to generators, the possibility of voltage collapse caused by system voltage oscillate and the power limit corresponding to saddle-node bifurcation will decrease.
根据同步发电机的振荡机制及影响励磁控制的各要素设计了可消除负阻尼的新型励磁控制方法。
Excitation adjustor which can eliminate negative-damping is designed according to the oscillation mechanism of the synchronous machine and the factors which affect the excitation control.
文中研究了发电机励磁顶值和PSS回路对电力系统的振荡失稳和混沌现象的影响。
In this paper, effects of hard lim it of the excitation and the loop of power system stabilizer PSS to the system oscillatory instability and chaos are studied.
文中给出了该方法在汽轮发电机轴承油膜振荡故障和静子线圈过热故障诊断中的应用实例。
Some practical examples for bearing oil whip fault diagnosis and the stator coil's overheating fault diagnosis of turbogenerators are given.
汽轮发电机组轴系失稳是关系到设备安全运行的重要振动故障。介绍了一台汽轮发电机组典型油膜振荡振动故障的分析处理过程。
This paper presents the whole process of vibration analysis and troubleshooting of a steam turbine generator, which exhibited oil-excited instability during load up.
汽轮发电机组轴系失稳是关系到设备安全运行的重要振动故障。介绍了一台汽轮发电机组典型油膜振荡振动故障的分析处理过程。
This paper presents the whole process of vibration analysis and troubleshooting of a steam turbine generator, which exhibited oil-excited instability during load up.
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