保护设备

In respect of the mechanical equipment in the planting industry, we should emphatically develop wheeled tractors of 100 horsepower or more and the auxiliary operation machine for less or exempted cultivation or deep loosing, straw and stubble smashing and field returning machine, joint operation machines for precise fertilization and seeding, complete equipment for cultivating sprouts of and for planting rice, maize, cotton and oil crops in factories, plant protection machinery, joint reapers, cotton pickers and complete agricultural equipment, etc..

种植业机械设备领域，重点发展100马力以上轮式拖拉机及为其配套的少耕、免耕、深松作业机，秸杆及根茬粉碎还田机，精量施肥播种联合作业机，水稻、玉米、棉花、油料作物工厂化育秧及栽培成套设备，植物保护机械，联合收割机，采棉机及设施农业成套设备等。

Controller appliance has air conditioners, refrigerators, water heaters, ice machines, drinking fountains and many other micro-computer controller; Li-ion battery miner's lamp controller has large batteries, LED lights constant current discharge protection, LED lights have the main, two-way switch function deputy brightness high, condenser, and product technology in the leading domestic level; industrial control equipment have for wave soldering, reflow, such as electronic sensing equipment such as thermometer, high-precision and stable performance for your products and equipment escort; direct digital controller to follow the LonTalk protocol LonWorks node.

家电控制器有空调，冰箱，热水器，制冰机，饮水机等多种微电脑控制器；矿灯控制器具有锂电池大电池充电，LED灯恒流放电保护， LED灯有主，副两路切换功能，亮度高，聚光好，产品技术处于国内领先水平；工控配套设备有用于波峰焊、回流焊等设备的电子传感测温仪器等，高精度及稳定的性能将为您的产品和设备保驾护航；直接数字控制器为遵循LonTalk协议的LonWorks节点。

With the technology development of computer and microcomputer protection,protection equipment update continuously, and its function enhance uninterruptedly.

计算机、微机保护技术的不断发展，使微机保护装置不断更新换代，功能不断完善，与此相比，继电保护教学实验设备的种类少、功能单一，难以满足教学和科研的需要。

Aailable eidence-based blood conseration techniques include (1) drugs that increase preoperatie blood olume or decrease postoperatie bleeding,(2) deices that consere blood (eg, intraoperatie blood salage and blood sparing interentions),(3) interentions that protect the patient's own blood from the stress of operation (eg, autologous predonation and normoolemic hemodilution),(4) consensus, institution-specific blood transfusion algorithms supplemented with point-of-care testing, and most importantly,(5) a multimodality approach to blood conseration combining all of the aboe.

现有的有关血液保护的技术包括：（1）增加术前血容量的药物或减少术后出血的药物，（2）保全血液的设备（如术中血液回收利用和血液节约措施），（3）保护病人自身血液不受术中压力影响的措施（如自体输血和等容性血液稀释），（4）达成医疗机构特有的输血算法的共识，并附以点式医疗测试，5）最重要的是上述血液保护措施的综合应用。

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。

Green maintenance is burgeoning theory and technology of modern equipment management and maintenance. Through the discussion for the concept of green maintenance, its feasibility is analyzed. Some key technologies of coalmine machine green maintenance are studied stressfully. The result demonstrates that green maintenance has a broad application prospect.

绿色维修目前还没有统一的定义，一般认为是机电设备在维修过程中，符合特定的环境保护要求，对生态环境无害或危害性较小，资源利用率最高，能源消耗最低的现代维修管理与维修方式，概括地说，绿色维修是以环境保护为核心的机电设备维修。

Because of this special geographical condition, the economic development is resisted in many areas of Gansu province and it is obvious that the electrical framework is from weak to strong. construction cycle of the electrical network is long and there are many terminal transformer substations, moreover, there is uncertainty in electric power source construction and the demand of dynamic reactive power compensation in supercentral electic network is changing.All of these have provided a large development space for the application of RSVC in Gansu electric grid.

IEC61850实现变电站内不同厂家二次设备间的信息共享和互操作，为数字化变电站提供了极好的通信平台电子式互感器可以用数字信号的输出替代传统的模拟量输出，将使保护、测量、计度量更加准确，抗干扰能力大加强，减少了二次电缆；在线监测技术和智能化开关的出现使一次设备性能得到较大扩充，提高了设备的可靠性，降低了维修成本，减少了二次电缆。

In order to meet various type of vehicle service needs, the corporate invests nearly 2,000,000 Yuan purchased some domestic first-class engine malfunction diagnosis equipment such as Launch X431TOOL series decoder, Launch KES-200 engine comprehensive analyzer, the exhaust analyzer, the automobile multimeter and so on and the international top malfunction diagnosis equipment such as BOSCH KTS540 decoder, BOSCH FSA740 engine comprehensive analyzer; also purchased some chassis test and service equipment such as lifting machine, four wheel aligner, the detection line, the wheel dynamic balancer, the tire sufficient nitrogen machine and so on; as well as purchased the automobile body adjuster ,the outline repair machine, the carbon dioxide protection welding machine, the roasts tand japanning room and so on; also purchased various oil route exempt opening type cleaner and ultrasonic wave dirt clearer; The company has also purchased various vehicle necessary special-purpose removal and installation tools.

为满足各类型轿车维修需要，公司投资近200万元购置了元征X431TOOL系列解码器、元征KES-200发动机综合分析仪、尾气分析仪、汽车万用表等国内一流的发动机故障诊断设备和国际顶级发动机故障诊断设备博世KTS540解码器、博世FSA740发动机综合分析仪；购置了举升机、四轮定位仪、检测线、轮胎平衡机、轮胎充氮机等底盘检测维修设备；购置了车身矫正仪、外形修复机、二氧化碳保护焊机、烤漆房等钣金喷涂设备；购置了各类油路免拆清洗机及超声波污垢清洗机等清洗设备；公司还购置了与各车型配套的专用拆装工具。

According to the learning of the Power l Supplying Projet, the primary design is about the 10kv switch-substation, according to the load and demand of the supply electric system of factory, the design of the gather reduction voltage substation and distribution system, and the checking of the main electric apparatus, the protection and adjusting and the lightning protection of the main voltage changer and line.

开闭所继电保护设计*。本文通过对供电工程的学习，主要是针对10kV 开闭所进行初步设计。根据所提供的负荷及对供配电系统的要求，对主要设备进行选型校验，对主变压器、线路进行保护整定计算，对主、变线路进行防雷保护等。

Substation automation is the secondary substation equipment (including measuring instruments, signal systems, relay protection, automatic devices and remote devices, etc.) through a combination of functions and optimize the design, use of advanced computer technology, modern electronic technology, communication technology and signal processing technology, on all major substation equipment and transmission and distribution lines of automatic monitoring, measurement, automatic control and computer protection, and integrated communications and scheduling automation features.

变电站综合自动化是将变电站的二次设备（包括测量仪表、信号系统、继电保护、自动装置和远动装置等）经过功能的组合和优化设计，利用先进的计算机技术、现代电子技术、通信技术和信号处理技术，实现对全变电站的主要设备和输、配电线路的自动监视、测量、自动控制和微机保护，以及与调度通信等综合性的自动化功能。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。