分析设备

This thesis makes harmonics analysis and simulation to the main electric devices of φ 76 Unit in order to seek solution to harmonics pollution of them. Field harmonics data of operating devices is recorded and compared to simulation results. The two are in good agreement. Then, power filter is designed and added to original circuit.

为了针对这些设备进行有目的、有根据的谐波治理方案设计，本论文对现有的Φ76机组的部分主要电气设备进行了谐波分析和仿真，并且用谐波检测仪器进行了设备处于工作状态之下的现场谐波测试，然后把仿真结果与现场谐波检测结果进行了对比，对比证明了仿真的正确性。

On base of the analyses of the management system of Chinese Railway ambulant equipment, the article discuss advantages of leasing style of railway traveling equipment, proposes the path of practicing lease financing mode for China railway traveling equipment, and suppose three schemes.

分析铁路移动设备租赁的优势，探讨利用租赁方式进行中国铁路移动设备融资的路径选择，提出一步到位式、逐步渐进式和分类推进式三种方案，建议组建中国铁路租赁公司运作铁路移动设备的租赁。

Be directed against the equipment management features in Shijiazhuang Refinery,this article systematically analyze the target,boundary and requirement of equipment management information system in...

针对石家庄炼油厂设备管理的特点，对石家庄炼油厂设备管理信息系统的目标、边界、需求进行了系统分析，提出了设备管理信息系统的信息模型，基于信息模型对有关过程进行系统组成要素聚类，进行了过程——数据类辩识。

Based on the analyses of the co-relationship between additional requirements of bilge pumping arrangements and requirements of subdivision and damage stability for passenger ship s,the authors found the irrationality of bilge pump number being as the margin for additional requirements of bilge pumping arrangements and proposed amendments to the new regulation 35-1 on bilge pump.

简要介绍了修改后的SOLAS第Ⅱ-1章第35-1条有关舱底排水设备的修改内容；通过对客船舱底排水设备附加要求与分舱、破损稳性要求之间相关性的分析，认为以舱底泵特征数作为设置舱底排水设备附加要求的临界条件是不合理的，从而对该部分内容提出了修改建议。

It is emphasized and introduced in detail that the analysis designation effectuation and function of the device management information system from three the aspects, including automatic on-line monitor, network optimum of equipment maintenance and appendage controlling.

重点从设备在线动态监测、设备检修网络优化和备件库存资金控制三个方面进行论述设备管理信息系统的分析、设计、构成、实施和作用。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

Synthetically considering these characteristics, the method of freeway management and control are presented according to four aspects: system objective orientation and concept design, system demand and requirement analysis, system data management and network structure, traffic control and accident detecting theory as well as its application. Function and structure of system are delimitated from the point view of integration. Construction and function demand of subsystem are analyzed and basic implement projects are presented. In this thesis, system data flow and management method and target which based on system network topology structure and equipment demand are described. Traffic modeling ideology and the process of making dynamic model as well as accident detecting program are presented with centralized and distributed traffic control theory in detail, then freeway ramp control theory which based on predictive model and its theoretic pattern are explored. Finally, based on the object oriented programming, program of accident detecting and checking on freeway is developed by using visual C++ as tool.

论文综合考虑高速公路交通管理系统的上述特征，分别从系统目标定位及概念设计、系统需求分析、系统数据管理及网络结构分析、交通控制与交通事件检测理论与应用四个层面，对高速公路交通管理与控制问题进行了系统阐述，界定了系统的功能及各功能的实现要求，并从系统集成角度划分了系统的结构；分析了各子系统的信息、功能、建设等方面的需求，给出了基本实施方案要求；对系统数据流程进行了描述和梳理，提出了数据管理的方法、目标及措施，分析、设计了系统网络拓扑结构及设备需求；阐述了交通模型的建模思想和动态交通模型的建立过程，对集中式和分散式全局交通控制理论进行了详细的分析，提出了基于预测的高速公路匝道控制理论，并对理论模式及相关的问题进行了研究，分析了高速公路事件检测系统，并采用面向对象的编程思想，以Visual C++为编写工具，开发了高速公路事件检测系统分析软件。

According to the standard and request of mechanical structures for electronic equipment tests, the finite element model of the electronic equipment cabinet was built by using the software of finite element analysis-ANSYS and simulated the tests of random vibrations by loading and calculating. The 3-D isopleths graph of deformation and stress of the cabinet was obtained. It could confirm the maximum of deformation and stress of the cabinet and probability of occurrence. Through more analysis of the frequency response curve reflected directly and clearly the deformation of the cabinet within the particular seismic frequency.

根据电子设备机械结构随机振动试验的标准和要求，采用有限元分析软件ANSYS建立电子设备机柜结构的有限元模型，通过加载求解对其进行随机振动试验的数值模拟，得到机柜有限元模型的三维变形和应力等值线图，进而确定机柜承受应力和变形的最大值及发生概率；通过对频率响应曲线的进一步分析，可以直观明了地反映出机柜承受一定频率范围地震下的变形情况。

The paper has mainly introduced the fuses equipment and their function of the electric equipment 6502. Analysis and discussion on selecting the protective fuses for each grade in the three have been performed. The theoretical analysis and field surveying have concluded that the capacity of the fuses of the first grade should be selected by the capacity of the power screen, the mid-value method should be adopted in capacity selecting of the fuses in the 2nd grade and the 3rd grade fuses should be ensured by the maximum loads current.

详细介绍了6502电气集中设备熔断器的设备和作用，并对三级防护的各级防护熔断器的选择进行了逐级分析和探讨，理论分析和现场实测认为：第一级熔断器的容量按电源屏容量要求选择；第二级熔断器的容量选择采用中值法；第三级熔断器则根据最大负载电流来确定。

Introduced principles and characters of the horizontal belt vacuum filter in alumina production, analyzed working characters of the equipment, discussed the effect and economic efficiency on energy saving and consumption reducing of this equipment.

介绍了新型固定室水平带式真空过滤机在氢氧化铝生产过程的应用，分析了新设备的工作特性，重点对新设备在节能降耗方面的效果进行探讨，并进行简要的经济技术分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。