电气系统

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

The simulation of the vector control system for rotor flux orientation is studied in this paper. The modeling and simulation of the vector control system of speed and flux closed-loop with the torque inside loop are completed by applying electrical principles and the toolbox of Simulink and Power System in the Matlab software. The paper mainly introduces the modeling of the speed adjustment system and the setting of parameters of the controller. The obtained results of the simulation are close to actual situation, which proves the correctness of the modeling.

文章对按转子磁链定向的矢量调速系统进行了计算机仿真研究，运用Matlab的Simulink和Power System工具箱及面向系统电气原理结构图的仿真方法，实现了带转矩内环的转速、磁链闭环矢量控制系统的建模与仿真；重点介绍了调速系统的建模和调节器参数的设置，给出了矢量交流调速系统的仿真模型和仿真结果，仿真结果非常接近实际情况，说明了仿真模型的正确性。

Eaton acquires westinghouse distribution and control business unit in 1994 and make the innovation in the blood of eaton.

1994年伊顿收购了西屋电气控制系统的业务使得西屋电气的创新传统流入伊顿的血液。

There aremany advanced, available and reliable systems are built to identify insulation material'saging conditions, which ensure the security service of high voltage equipments.

运用这些系统对电气设备进行在线监测，识别电气设备绝缘的老化程度，预测设备寿命，对于确保安全生产有着重要的意义。

This design is carries on the design and the research to this vehicleimportant constituent ---- hydraulic system and the electricitycontrol system, its hydraulic system by boards the hydraulic systemand alights the hydraulic system to be composed.

本设计是对该车的重要组成部分----液压系统和电气控制系统进行设计和研究，其液压系统由上车液压系统和下车液压系统组成。

For Haiphong, Emerson's comprehensive PlantWeb solution includes deployment of the Ovation control system for data acquisition, as well as for monitoring and control of the sequence control system, furnace safeguard supervisory system, and electrical control system for all major plant components, including the boiler, turbine, flue gas desulphurization system and balance of plant processes.

对于Haiphong，艾默生全面的PlantWeb解决方案包括：Ovation控制系统的部署、为监测和控制的程序控制系统、熔炉保护监督系统和控制所有电厂设备的电气控制系统。这些设备包括锅炉、涡轮、废气脱硫系统和工厂平衡过程。

For Haiphong, Emerson's comprehensive PlantWeb solution includes deployment of the Ovation control system for data acquisition, as well as for monitoring and control of the sequence control system, furnace safeguard supervisory system, and electrical control system for all major plant components, including the boiler, turbine, flue gas desulphurization system and balance of plant processes.

艾默生为海防提供的综合PlantWeb解决方案包括用于数据采集、监测和控制次序控制系统、煤炉安全监测系统的Ovation控制系统，以及所有工厂主要部件的电气控制系统，包括汽锅、涡轮、废气脱硫系统以及工厂流程的平衡。

3 Lay down the periodic electric control devices and lighting system maintenance plan for electric and production equipment.

制订电力电气设备、生产设备电气控制装置和照明系统的周期维修计划。

Aiming at the condition that the power of air conditioning in locomotive is especial, the cooling medium is mostly chemicals and the systems are complex, in this paper, a wholly fresh air scheme is brought up for air conditioning system in locomotive drive-cab on the basis of the intermittent working of the air compressor, taking high-pressure air as power source and combining compressed-air refrigeration technique and gas injection technique, without supplying external electric apparatus.

针对现有机车空调系统电源特殊、冷媒多为化学制剂、系统复杂的状况，利用机车制动系统空气压缩机间歇工作的特点，以高压空气为动力源，有机地结合压缩空气制冷技术和气体喷射技术，提出了一套无需外加电气设备、全新风的机车司机室空调系统方案，并介绍了该系统的设计方法和气体喷射器的设计过程，为进一步深入研究奠定了基础。

At present, our company mainly produces various types of access equipment specifications, the ship hatch cover, deck machinery, electrical equipment and marine vessels automated control system and landing high-Low-voltage electrical substation, such as box-type series.

目前，我们公司主要生产各种规格型号的通道设备、船舶舱口盖、甲板机械、船用电气设备与船舶自动化控制系统及陆用高低压成套电气系列箱式变电站等。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。