Vibration is the main fault which affects the regular run and endangers the life-span of hydropower unit.
振动是影响水力机组正常运行和危害机组寿命的主要故障。
In this paper, a DP with successive approximation method is designed for solving the hydropower unit commitment problem.
文章设计了一种逐次逼近动态规划法，可用于求解水电机组的组合问题。
The vibration of the hydropower unit caused by the relief pipes of the turbine has attracted scholars and station staffs attention.
水轮机中的减压管对于水力发电机组稳定性的影响，已经引起了研究人员和运行人员的普遍关注。
Zeng S Q. Based on intelligent fusion algorithm of hydropower unit identification and control strategy research[D]. Wuhan:Hubei University of Technology, 2013.
曾仕琦。基于智能融合算法的水电机组辨识与控制策略研究[D]。武汉：湖北工业大学，2013。
At last, a set of online monitoring of hydropower unit vibration and analyzing system is developed, including IPC, A/D cards, vibration sensors and correlative modules.
最后研制了一套由工控机、A／D卡、振动、摆度传感器及相关模块组成的振动在线监测与分析系统。
That the temperature of thrust bearing pad exceeds the alarm temperature designed for unit No. 1 at Yele Hydropower Plant impedes the normal operation of the unit.
冶勒水电站1号机组在试运行过程中推力轴承瓦温超过设计的报警温度，无法继续运行。
According to two units with hydraulic coupling in hydropower plants, the effect of expanded unit connection to low frequency oscillations damping was studied in detail.
研究机组之间存在水力联系的水电站中，两台机组采用扩大单元接线对系统低频振荡阻尼的影响。
Through the stress - strain adjustment of unit 2, Shiquan Hydropower Station, the thrust bearing pad of unit 2 has been stressed uniformly, and the safe operation of unit 2 is ensured.
通过对石泉电厂2号机组推力轴系的应力—应变调整，使2号机组的推力轴瓦受力均匀，保证了机组的安全稳定运行。
The axis track is an important characteristic to be used to diagnose the unit condition in the condition-based maintenance system of hydropower generating sets.
在水电机组状态检修系统中，轴心轨迹是诊断机组状态的一个重要特征。
This article presents the repairing work of leaky elastic oil tanks occurred on unit No. 14 of Gezhouba Hydropower Station.
叙述了葛洲坝水电厂14号机组弹性油箱泄漏及处理过程，提出了相应的对策。
Turbine governor, which ensures the stable function of hydropower generator unit, is important control equipment in hydropower plant.
水轮机调速器是保证水电厂发电机组稳定运行的重要控制设备，直接关系到机组的安全稳定运行。
Unit foundation of powerhouse of large scale hydropower station need bear very heavy dynamic load, generally used cylinder form, the foundation with non cylinder form has not been applied in home.
大型水电站厂房的机墩结构要承受巨大的动力荷载，通常采用圆筒式机墩，非圆筒型机墩在国内尚无应用。
The hydraulic turbine unit frequently operates under the low water head, exists the questions of unstable operation and cavitation in Mania hydropower station.
满拉水电站水比机组经常处在低负荷下运行，存在着局部空蚀破坏和运行不稳定两大问题。
After unit shaft sealing was reformed into spiral dynamic pump sealing in Nanyaheand Gengda hydropower stations, operation defect which existed for many years is disappeared.
南桠河和耿达水电站机组主轴密封改造为螺旋动力泵式主轴密封后，解决了多年存在的运行缺陷。
At present, in order to dispatch load, lots of hydropower stations need to use the unit efficiency curve, which more or less has some errors because it is obtained by model test.
目前许多电站负荷分配需要使用机组效率曲线，但是由于机组效率曲线是通过模型机得来，在实际运行中难免会有误差。
To the reliability of multi synchronization points of circuitry type and unit type, this paper studies a new technique about quasi-synchronization selector control based on PLC in hydropower station.
针对多个线路型和机组型同期点并列的可靠性问题，提出并研究了一种基于PLC的水电站准同期选线控制方式。
With the development of large scale hydropower station and the increase of installed capacity of generating unit, the evaporation cooling has been applied widely.
随着大型水电站的开发建设和单机容量的增大，蒸发冷却将得到广泛的应用。
This design has established project application foundation to realize the fault detection of the unit of hydropower generator.
该设计为实现水轮发电机机组的故障检测奠定了工程应用基础。
The results have shown that this method will benefit the security and economy of hydropower plant operation and help the study of the dynamic process of the unit.
仿真实验结果表明，新方法更准确地反映了水击极值点及整个动态过程，对保证水电站运行的安全性和经济性以及研究机组动态过程具有很高的理论和实际应用价值。
With the single unit capacity of small and medium hydropower growing increasingly and the complex of unit structure, so it put forward a higher demand about unit maintenance.
随着中小型水电机组的单机容量不断增加，机组结构日趋复杂，对机组的检修提出了更高的要求。
This paper investigates the influencing factors of speed rise of power unit in the over-speed test of hydropower station.
研究了水电站过速试验中机组转速升高的影响因素，着重从模型机组飞逸特性曲线及机组转动惯量两方面分析。
When we reconstruct the microcomputer monitoring unit in a small hydropower station, only little error may cause severe influence. So we should pay more attention on it.
在小型水电站微机监控改造工程中同期系统安装和调试稍有不慎可能引起严重后果，必须引起高度重视。
In general, the head pressure of power station in river channel is lower comparatively, but the unit discharge is always greater, in this way, the dimension of the hydropower house is usually larger.
河床式水电站水头比较低，而单机流量通常较大，这样水电站厂房的进水口、蜗壳和尾水管等尺寸较大。
After unit shaft sealing was reformed into spiral dynamic pump sealing in Nanyaheand Gengda hydropower stations, operation defect which existed for many y...
南桠河和耿达水电站机组主轴密封改造为螺旋动力泵式主轴密封后，解决了多年存在的运行缺陷。
This algorithm is applied to fault diagnosis for unit no. 2 of the Daxia hydropower station. Results show that this method can help accurately identifying the faults and their categories.
该算法应用到大峡水电站二号机组的故障诊断中，结果表明，该方法能够对故障做出准确判别，分离各种故障类型。
In chapter 1, the existed problem and current research on vibration of hydropower house with large-sized Francis turbine generator unit are introduced.
第一章介绍了大型混流机组厂房的振动问题及研究现状。
The paper sets up the PSS model of NO. 3 unit in Xihe Hydropower Station. The model parameters are tested and compared with the simulation results. It proves the accuracy of parameters.
建立了喜河水电站3号水轮机组的PSS模型，通过模型参数测试结果与仿真结果的比较，验证了参数的准确性，并进行了现场试验研究。
The paper sets up the PSS model of NO. 3 unit in Xihe Hydropower Station. The model parameters are tested and compared with the simulation results. It proves the accuracy of parameters.
建立了喜河水电站3号水轮机组的PSS模型，通过模型参数测试结果与仿真结果的比较，验证了参数的准确性，并进行了现场试验研究。
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