查询词典 turbine

The responses properties of coupled vibrations for 120° and 180°asynchronous juxtaposition of 200MW turbine-generator set were analyzed. The results show that the responses properties of flexural and torsional vibrations caused by 120° asynchronous juxtaposition are similar to that of 180° asynchronous juxtaposition. When the fault happened, Former two steps inherence frequencies and whirl speed frequency of torsion are excited. And the first step inherence frequencies of flexural vibration are also excited besides whirl speed frequency. Transient electromagnetism moment peak, torsional and torsional moment responses caused by 180° asynchronous juxtaposition are lower than that of 120° asynchronous juxtaposition.

利用该方法，针对某200MW汽轮发电机组的120°和180°两种非同期并列情况，进行了机组弯扭耦合振动响应特性研究，分析表明：汽轮发电机组的120°和180°两种非同期并列情况下的弯振和扭振响应特性基本相似；非同期并列主要激发出工频和前两阶固有频率扭振，弯振除工频主分量外，第一阶固有频率也被激发出来；180°非同期并列时的暂态电磁力矩峰值比120°非同期并列时低，相应的扭振和扭矩响应也小于后者。

In the paper a new method of measuring torsional oscillation of the turbine-generator shaft was proposed on the basis of high speed CCD photography.

CCD扭振测量法是一种基于图像技术的方法，利用CCD相机对轴进行拍照，得到含有扭振信息的图像信号。

With the development of the electric power industry, the capacitance of a turbo-generator has increasingly become larger, which risk the torsional oscillation in the flexible shaft system of large turbine-generators. The problem of shaft torsional oscillation has become the key technology need to be solved urgently in the development of large power system and unit.

随着电力工业的发展，汽轮发电机组的单机容量正日益大型化，导致机组轴系扭转振动的危害性日益突出，轴系扭振问题已成为发展大电网和大机组所急需解决的关键技术问题。

Based on the shaft partial energy function of the turbine\|generator shaft torsional oscillation.

利用表征重合闸操作影响发电机轴系扭振幅度的等值能量函数，导出了瞬时性故障与永久性故障下重合闸操作对轴系冲击最小的理想重合时刻。

A torsional oscillation observer based on the general observer was discussed to estimate the speed of the turbine generator. The dynamic characteristics of standard Luenberger observer with quantization effects were studied by Lyapunov stability criterion. It is concluded that the state estimate error can not asymptotically converge to zero in-the-large in presence of quantization effects.

讨论了基于状态观测器的汽轮机轴系扭振测量方法，采用李亚普诺夫稳定性判据分析存在量化效应的条件下标准龙贝格观测器的动态特性，指出由于数字系统中的有限字长效应会使观测器的跟踪性能恶化，估计误差不能在大范围内渐进收敛。

The character of the torque control mode to trace optimum work point automatically was proved with wind turbine aerodynamics.

对风速，电机转速和吸收的功率之间的对应关系做了推导，从而证明了力矩控制方式可以自动跟踪最优工作点的特性。

It's very useful for the design of a 1000 MW class turbine generator.

该分析计算方法对大容量汽轮发电机的设计是实用有效的。

This position will be responsible for Turbine and Generator shop Quality Surveillance.

该职位将负责汽轮机和发电机的制造质量监督。

Also, the safety of the turbine generator foundation is analysed.

对汽轮机基座的安全性作了分析。

The control systems for wind turbine generator s are compared and analyzed.

摘要对目前流行的风力发电机组控制系统进行对比分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。