发电机

The fault mode and f ault tree analysis for large turbogenerators are carried out by ways of su bsystems, subcomponent s and fault trees, which can be used to supply enough diag nostic rule sources and theoretical base for the study of fault diagnostic exper t system of large turbogenerators.

按照分系统、分部件的方式，并引入故障树的方法，对大型汽轮发电机展开了有关故障模式和故障树的分析，从而最终为大型汽轮发电机故障诊断专家系统的研究提供足够的诊断规则来源和理论基础。

After the trip of the tie line breaker caused by syntony,a series of faults ocurred in a power plant under the operating condition of single generator with heavy plant loads,such as auxiliary transformer tripping, standby transformer short-circuit and generator burnout and so on.

阐述了某电厂由于谐振造成联络线路断路器跳闸后，发电机单机带厂用电重负荷运行情况下。出现厂用变压器跳闸、备用变压器短路及发电机被烧毁等一系列故障。

In the practical power system operation,the powers of generators and loads are changing constantly,and the state variables e.

实际电力系统运行中，发电机和负荷的功率随时都在变化，发电机中各状态变量和代数变量(交轴、直轴的电压和电流等)分布在一定范围内。

The paper discusses present methods of electric test s for generators in China, a new multifunctional supervision test system for parameter measurement of generators, electric start-up test and failure records is introduced, and the advantage, practicality and special characteristics of the system are presented.

讨论了我国现有的发电机电气试验方法与试验手段，介绍了一种新型的、集发电机参数监测、电气总启动试验和故障记录为一体的综合监测试验系统，并指出其先进性、实用性和独有的特

After the characteristics and development of excitation system of synchronous generators are analyzed, micro-computer regulating theory of excitation system is discussed, this dissertation presents a scheme of designing excitation system with Programmable Computer Controller and IGBT, and PCC IGBT excitation system of turbine generator is also developed according to the above mentioned.

本文在全面分析同步发电机微机励磁装置特点及发展现状的基础上，论述了微机励磁调节的原理，提出基于可编程计算机控制器控制的绝缘栅双极晶体管励磁系统的设计方法，并在此基础上开发了基于PCC控制的水轮发电机IGBT励磁系统。

Unlike the conventional indirect method, it can directly implement the generator field and armature current limits accurately, thereby assuring power flow convergence and voltage collapse point identification during tracing the PV curve when generator limits constraints are considered. The critical limit constraint equation is introduced in the corrective stage of the continuation method as the additional equation to solve the limit induced bifurcation point accurately.

给出新的发电机电流极限约束的直接处理算法，解决了计及发电机电流约束时，潮流难于收敛和不易精确求出电压崩溃点的问题；对不易精确求得的极限诱导分岔点，通过在连续潮流法的校正步骤中将关键的极限约束方程作为附加方程来快速而精确地求解。

In order to satisfy parallel units application and real-time requirement,according to the communication protocol with a 16-bit Cyclic Redundancy Checkalgorithm,monitoring software based on Windows platform with CSerialPort class,a universal multithread serial port class,is developed to realize reliable maintenance and control of micro-turbine.

涡轮发电机实际上是由安装在同一轴上燃气涡轮和发电机组成，系统结构框图见图1。采用DSP芯片为核心的数字功率控制器包括功率电路和控制电路两部

Static electricity was the first form discovered and investigated, and the electrostatic generator is still used even in modern devices such as the Van de Graaff generator or MHD generators.

静电是发现和研究的第一种形式，静电发生器即使在现代的设备中仍在使用，如范得格拉夫发电机或磁流体发电机。

Basing on the analysis of Park model and the vector diagram of hydro generator and taking its actual wiring in the power system into account,this paper develop an accurate method—Newton analytical method,to calculate the static stability boundary condition.

本文通过对水轮发电机派克方程和矢量图的分析，并考虑其在电力系统中的实际联结情况，建立一种精确的水轮发电机静态稳定边界计算方法———牛顿解析法，用此方法对多台机组静态稳定边界点所有参数的计算结果与试验实测值进行比较，误差很小，达到了足够的准确度。

In order to widen the frequency bandwidth of piezoelectric vibration based generator, the structure with multi-beams and single mass is designed.

本文针对压电式振动发电机频带宽度过窄的问题，设计了多悬臂梁-单质量块结构的微型压电式振动发电机。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。