After the Depletion of Resources——Inspiration from transit of Fuxin from ＂city of coal power＂ to ＂city of wind power＂

Fuxin, Liaoning Province, the former ＂city of coal power＂ is depleted of resources because of over-exploitation. It did not, however, become devastated as some energy-depleted cities, but is making efforts in transition to a ＂city of wind power＂, a new type of energy base.     

Identification of Power ＂Knee Point＂——-A summary of the Forum on the Situation of Power Supply and Demand in 2006

Explanation of "knee point" ● Has a "knee point" emerged in the power supply and demand? ●How to identify the "knee point"? There are two explanations about "knee point." A knee point in terms of mathematics and statistics refers to a clear knee point b…     

Five ＂Mainstays＂ of Power Grid Innovation

It is an important reason for Microsoft, Bell and General Electric etc dominating always on forward position in world's science and technologies to bring full play to auton- omous innovative capability of enterprises' research and development center. In the Power Grid Science and Technology Working Conference 2006, Mr. Lu Qizhou, the vice president of the State Grid Corporation(SG) pointed out that during the 11th Five-Year Plan period, the SG will emphatically push forward optimal conformity on scientific and technological resources among its affiliated research institutes, tap their back bone and leading effects in technical innovation system.     

The evaluation of the safety of shaft system of large turbine generator set

1.IntroductionWith the increase of the capacity of the turbine generator set,the safety of the shaft system of the set(including the exciter)isthreatened for the following three reasons:1.The length of the shaft system increases.The length of theshaft system is 15 m for a 50 MW set,32-40 m for a 300 MW set and90 m for a 900 MW nuclear power set.The increased number of theconcentrated masses leads to the increase of both the number of the     

The Study of the Effects of Reading Factors on Incidental Vocabulary Acquisition

To figure out the most robust factors influencing incidental vocabulary acquisition （IVA） performance, in this paper three reader variables are identified based on literature review, i.e., reading proficiency, sight vocabulary and content schema; and an investigation is conducted to search for their different impacts. After the analysis of the collected data by SPSS 10.0, the results suggested that individual difference in IVA is largely caused by the difference in reading ability and previous vocabulary knowledge. Therefore, to foster learners＇ IVA ability, EFL teachers need to help students develop independent reading strategies for IVA, provide material suitable to students＇ level and enrich their background knowledge.     

＂Artificial sun＂ chalked up record of maximum temperature

The commencement of Hainan power grid interconnection project was held in Haikou City on 10 February. It is the first EHV long-distance, sea-crossing interconnection project in China. Hainan will conclude the history of ＂isolated island＂ upon completion of the project.     

Beijing ＂0811＂ power project ushering in the Olympic Games

Beijing Power Company held the symposium on ＂0811＂ power project ushering in the Olympic Games 2008 in July.     

Project of ＂digitalized power plant＂ checked and accepted

Guangdong Yafang Science and Technology Co., Ltd. and Huaneng Yimin Power Plant have jointly taken five years to develop the key technology of ＂digitalized power plant.＂ The project has gone into operation at present.     

Tasks and methods of drawing up “The Program of Modernization of the Power Industry of Russia for the Period through the Year 2020”

The structure of tasks, stages, and methods of drawing up “The Program of Modernization of the Power Industry for the Period through the Year 2020” as part of the state program “Energy Efficiency and Development of the Energy Industry” have been determined.     

The"most"items of the Three Gorges Project

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母线充电时投入母差保护的必要性分析

变电站的母线是电力系统最重要的电力元件之一,起着传输电能的作用。当母线发生故障时,如果母线差动保护不能瞬时可靠动作,将直接影响电力系统的安全稳定运行,造成严重后果。变电站母线检修作业完成后,利用母联开关给检修母线充电时,运行人员往往将母线差动保护完全退出,只投入母联充电保护。文中根据母线差动保护、母联充电保护及母联死区保护原理,对各类型故障进行分析,以此证明在对空母线充电时,投入母差保护的必要性。     

KINCO总线型触摸屏在电动大巴行业的应用

本文主要介绍KINCO总线型触摸屏在电动大巴电池管理系统中的应用。在这个控制系统中,触摸屏和微控制器通过CAN总线通信并完成电池组相关信息的数据采集。触摸屏监控到的主要参数：系统电压、系统电流、电池容量、电池温度、报警故障等。     

一种CAN/LIN混合网络的实现

提出了一种基于CAN总线和LIN总线的混合网络体系.设计了CAN/LIN网关,给出了网关的硬件结构和软件流程.该混合网络体系兼备CAN总线高速数据传送和LIN总线结构简单的特点,成本低、可靠性高、适用范围广.     

数字式母线保护的性能分析

在对丰满发电厂常规母线保护运行情况总结的基础上，结合微机技术的发展，提出了引进REB500型数字式母线保护及其配置，并着重对数字式母线保护的特点和性能进行了阐述。     

PXI总线在雷达ATS中的应用

PXI作为模块化仪器标准总线技术在许多领域得到了广泛应用.在分析PXI总线性能和技术特点的基础上,详细介绍了基于PXI总线某系列雷达自动合测试系统的硬件组成和软件设计方法.该系统采用模块化设计,集成度高,具有扩充性好,可靠性高等特点.     

PCM在提高保护装置正确动作率方面的新思路

继电保护装置的正确动作率是徇安全生产的重要指标,如何提高继电保护装置的正确动作率,一直是调度通信系统的重点技术难题之一。基于光纤通道和微波通道的大量普及（即ＰＣＭ设备的应用）和这两种通道能克服电力载波高频通道中的主要缺陷出发,提出一种 逻辑校验关系来提高高频保护装置的正确动作率。     

工业现场CAN总线技术在航天领域的应用

CAN在民用、工业等领域已经应用广泛，在航天领域也逐渐成为星上总线之一。本文结合CAN总线在国内外航天小卫星领域中的实践应用，描述了CAN总线的特点和CAN总线的工作原理，从协议上分析了CAN总线航天应用的可行性，从苍片选用、原理设计、接口实现、通信软件设计等方面阐述了CAN总线在我国航天领域的应用。     

基于CAN总线的探针定位系统

根据某吹风试验台对测试环境和测试精度的要求,介绍了一种基于CAN总线的探针定位系统。设计了CAN总线与PC机、下位微处理器间数据转换电路,利用CAN总线处理PC机与多个下位微处理器间的数据通讯,实现了试验台的远距离实时控制和多探针协调动作。介绍电流环、速度环和位置环相结合的位置伺服控制模块,提高了探针的定位精度,保证吹风实验中数据的准确性。试验结果表明该系统有效地解决了对空气流场的分布式高精度测量问题。