Simulation Investigation for the Regulating Characteristics of Real and Reactive Power of Asynchronized Turbogenerators

This paper discuas the controlling principle of asynchronized turbogenerators,deduces their mathematical model,and studies their regulating characteristics of real and reactive power(or voltage)by means of simulation calculation of operating characteristics for a 200MW asychronlzed turbogenerator.The conclusion is that the asychronlzed tubogenerators not only can regulate real and reactive power independently but also has an excellent dynamic performance.     

The Control Strategy for the Excitation System of Asynchronized Turbogenerators

In this paper, the excitation principle and operating characteristics ofasynchronized turbogenerators are analyzed,and adaptive tracing iterative control strategy based on state identification is proposed. In order to apply this control scheme to practice engineering, some primary elements are analyzed and presented for constituting dual-channel automatic excitation control system of asynchronized turbogenerators. Finally, the paper presents the principle structure charts about excitation control system of asynchroized turbogenerators.     

Parsimonious Covering Probability Model for Turbogenerator Vibration Faulty Diagnosis

The turbogenerator vibration faults have the character of variety. Many faults often occur synchronously. This paper introduces a diagnosing model based on parsimonious covering theory and probability. A model for turtogenerator's fault diagnosis is proposed. The availability of this method is proved by two fault diagnosis examples of turbogenerator. The results show that the model proposed can be used for multi_fault diagnosis together. It may make up shortage for some of expert systems and neural networks in some aspect. From the practice,this model has higher reliability and practicability.     

汽轮发电机稳态负序工况仿真模型及其对负序损耗计算结果的影响

稳态负序能力是大型汽轮发电机安全可靠运行的重要技术指标之一,而稳态负序损耗的准确计算是确定稳态负序能力的关键和基础。介绍了模拟发电机稳态负序运行工况的传统模型,针对其不足提出了一种新的不对称负载模型,并对2种模型所反映的物理机理和优缺点进行了对比分析。在此基础上,以一台1 550 MW的大型4极核能汽轮发电机为例,采用场路耦合的二维非线性时步有限元方法,结合2种仿真模型对其稳态负序损耗分别进行了计算,并对计算结果进行了详细分析。结果表明：相对于传统的负序模型,笔者提出的不对称负载模型充分考虑了磁饱和与转子附加损耗的影响,计算出的稳态负序损耗更接近实际情况,为准确考核大型汽轮发电机的稳态负序能力奠定了基础。     

Construction of the Turbogenerator Elastic Platform for CPR1000 Nuclear Power Station

Combined with the construction process of turbogenerator elastic platform for Ningde Nuclear Power Station, elaborated the technical difficulties and control measures during high formwork construction, spring vibration isolator installation, high precisi     

Dual-pasSage Excitation Control of Asynchronized Turbogenerator

n this paper,the principle structure and basic model of dual-passage excitationcontroller of asynchronized turbogenerator are presented.The control effect of each feedback termare analyzed.Two improved control schemes are proposed and testified by simulation in vestigation.     

Applications of SOM Neural Network in Multiple-faults Diagnosis of Turbogenerator Set

The turbogenerator vibration faults have the character of variety. Many faults often occur synchronously. The traditional BP neural network can diagnose the single fault effectively. If we diagnose the multiple faults by using the BP neural network, we must train all samples of multiple faults, which is will increase the number of training samples and the burden of learning greatly. So the diagnosis can not be performed easily. This paper introduces a method based on SOM neural network, which is studied by using the single sample and diagnosing the multiple faults according to the position of output nerve cell. By analyzing the examples, the method is proved to be available for diagnosing the multiple faults of Turbogenerator set.     

边远无电区的CCVT电源系统

ＣＣＶＴ为蜜闭循环蒸汽发电机或称奥密封能源转换器，它具有设计独特，质量优良、可靠性程度高、维护工作量少、寿命长、无人值守、燃料来源广、安装方便等优点，是边远无电地区优选的主要电设备之一，主要应用领域有通信、遥感、导航、铁路信号、阴极保护、ＳＣＡＤＡ系统及远控阀等，是当今世界应用最广的电源之一。通过对其结构、工作原理、影响设计的因素及应用诸方面的分析，进一步了ＣＣＶＴ是加快边远无电地区管道建设的一种     

Control Strategy for Asychronized Turbogenerators

Asynchronized Generator can better solve the excessive reactive and stability problem in power system.In order to improve the dynamic and transient performances of an asynchronized turbogenerator(ASTG),excitation control equation of it in the dynamic synchronous reference frame is presented.Control results are simulated in the synchronous and dynamic synchronous reference frames for ASTG.It is shown that the dynamic and transient performances in the dynamic synchronous reference frame are better than those in the synchronous reference frame.Consequently,the control strategy of dynamic synchronous reference frame can shorten more time on the dynamic process of ASTG.