基于分形理论的汽轮发电机组故障诊断。
Fault diagnosis of the generator set based on fractal theory.
基于人工神经网络LM算法，建立了风力发电机组故障预警诊断模型。
Based on LM algorithm of an artificial neural network, a model for fault warning diagnosis of wind power units has been established.
提出了一种新的汽轮发电机组故障诊断模型-并行关联诊断模型(PRDM)。
This paper presents a new parallel relative diagnosis model (PRDM) for turbo generator sets.
为了减少这种影响，提出一种综合分析的反映发电机组故障恶化程度的趋势曲线。
So, the results of fault trend analysis are easier to be influenced. To avoid this effect, a new synthetic analysis curve to reflect the fault deterioration trend is presented.
本文以振动特征频谱为依据，提出了一种基于粗糙集理论的燃气轮发电机组故障诊断新方法。
According to vibration characteristic spectrum, a gas turbogenerator fault diagnosis approach based on rough set theory is proposed.
在汽轮发电机组的各种故障中，振动故障是一类对生产和运行产生很大影响的故障。
In the turbine various fault, the vibration fault is a kind of production and operation of a great influence on the fault.
由此可见，开展大型汽轮发电机组的故障诊断技术研究是非常必要的。
This shows, and carry out large turbine generator fault diagnosis technology research is very necessary.
实际应用表明该方法可以有效诊断汽轮发电机组振动类多重并发故障，诊断结果全面、准确。
Actual applications show that the proposed method can effectively diagnose the multi-concurrent vibrant faults of turbogenerator sets and the diagnosis result is correct.
分析了发电机组中频加载掉电压故障发生的原因，提出了电缆压降补偿装置调整方法。
Analyzed failing cause of mode-frequency to load voltage drop for generating set, provided regulated method of cable voltage-drop compensation device.
发电机组的故障趋势分析经常受到负荷变化的影响。
The trend analysis of faults in generator sets is often influenced by load variation.
燃气轮发电机组的故障诊断，实质上是一个模式分类问题。
Gas turbogenerator fault diagnosis can be treated as a pattern classification task.
系统研究了汽轮发电机组的主要故障机理和特征。
The main fault mechanism and characteristics of steam turbine generator unit was researched.
提出了自适应学习率及动量因子的BP神经网络算法和误差逼近度渐近收缩学习的BP神经网络算法，并将其应用于汽轮发电机组振动故障诊断与识别。
The improved BP algorithms based on adaptive parameters adjustment and error contracting gradually are presented, which are applied successfully to fault diagnosis of steam- turbine generator unit.
若备用发电机组不能启动，应急发电机应在故障发生30秒后自动启动。
If the stand-by generator engine fails to start, the emergency generator is to be automatically started 30 seconds after the trouble happens.
针对一类水力发电机组设计了一套状态监测和故障诊断系统，并通过实例验证了系统的可行性和适用性。
A system for state inspection and fault diagnosis has been designed, and the system feasibility and practicability have been validated by example.
针对300MW火力发电机组原锅炉吹灰控制系统存在的联锁回路复杂、故障频繁等问题，阐述了对该系统进行改进的必要性。
Aiming at the problems of interlock circuit complex and faults frequent of the origin boiler soot blowing control system for 300mw generation unit, elaborates the necessity of improvement.
随着同步发电机组容量的增加，为防止发电机内部故障扩大，对发电机的灭磁系统提出了更高的要求。
Along with the synchronization power set capacity increasing, for prevent the generator interior breakdown from expanding, the generator has a higher request to the de-excitation system.
在相复励旋硅式无刷同步励磁电机中，如果在正常运行过程中出现硅整流管开路或短路的故障，必将危及到发电机组的运行。
In the rotating-diode phase compound excitation Brushless synchronous machine, if one diode appears fault, such as opening or shorting during the normal operating, it will do harm to the generator.
为了分析发电机组振动信号在能量和波形方面的细小变化，从而反映发电机组的早期故障趋势，提出了基于数学形态谱的故障特征量。
Fault features based on pattern spectrum were presented for analyzing tiny changes of energy and waveform of generator sets vibration and reflecting the trend of early faults.
实验结果表明，它比传统的振动通频值能更好的反映发电机组的故障发展趋势。
The results of experiments proved that it can show the fault trend better than the traditional analysis of vibration amplitude.
根据水轮发电机组的振动特点，探讨了适合于水轮发电机组的振动故障诊断方法，即模糊诊断法。
According to the vibration features of hydraulic generator set, the paper discusses a method that is suitable for vibration fault diagnosis, namely fuzzy diagnosis method.
依据该简化算法，实现了故障分类器的参数优化，并应用于汽轮发电机组的故障分类。
Then a simplified algorithm was proposed in order to achieve parameter optimization of fault classifier for turbo-generator sets.
本文提出一个基于知识库和专家系统技术的水轮发电机组振动故障诊断与咨询的专家系统。
A vibration diagnosis and consultation expert system for hydroelectric generating set based on knowledge base and the technique of the expert system is proposed.
振动信号的预处理，对于水力发电机组振动故障诊断系统而言是至关重要的。
Vibration signal pretreatment is much important to the vibrant fault diagnosiss ystem of waterpower set.
为分析处理汽轮发电机组运行中因叶片振动引起的故障，需调整叶片的固有频率和振型。
The modification for the natural frequency and the mode of vibration of blade are needed to treat the fault of steam turbogenerator caused by it's blades.
励磁系统故障仍是发电机组电气故障的主要原因。
Excitation system faults are main causes of generator electrical emergency.
负载需求控制的目的是降低燃料的消耗量，减少往复式柴油发电机组因低负荷造成的故障。
The purpose of load demand controls is to reduce fuel consumption and limit problems caused by light load operation of reciprocating diesel generator sets.
高压给水泵组是发电机组的重要辅机设备，振动引起故障的发生率高，严重影响机组的安全运行。
High-pressure feedwater pump is one of the important auxiliary equipment of power unit. Its vibration problem happened frequently has seriously influenced the safety running of power unit.
高压给水泵组是发电机组的重要辅机设备，振动引起故障的发生率高，严重影响机组的安全运行。
High-pressure feedwater pump is one of the important auxiliary equipment of power unit. Its vibration problem happened frequently has seriously influenced the safety running of power unit.
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