共查询到20条相似文献,搜索用时 140 毫秒
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提高山东电网调峰能力的实践与探讨(续)DiscussiontheWaytoImprovetheShandongElectricUnits'LoadRegulationAbility(250021)山东电力科学研究院徐麟3.3200MW燃油机组两班制调... 相似文献
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05配电系统中基于分支电流的状态估计方法=Branchcurrentbasedstateestimationmethodfordistributionsys-tems[刊,英]/BaranME,kelleyAW(IEEETransonPowersys... 相似文献
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丰电首台300MW机组提前移交生产的启示InspirationfromAheadTransfertoProductionoftheFirst300MWUnitinFengchengPowerPlant徐建国(江西省火电建设公司,江西省丰城市,3311... 相似文献
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巨大的成就 辉煌的前景 总被引:1,自引:0,他引:1
巨大的成就 辉煌的前景电力工业部史大桢TremendousAchievementsBrilliantProspects¥//中国电力装机在1987年跨上100GW的台阶后,经过7年的努力,在1995年3月份突破200GW,又跨上了一个新的台阶,这是中... 相似文献
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国产300MW分缸凝汽式汽轮机汽缸变形的预防与处理PreventionandTeatmentonCasingDeformationofDomestic300MWSeparatedCasingCondensateTurbine尉守成(山西省电建一公司,... 相似文献
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邹县发电厂5号(600MW)机组调试—给水泵汽机TSI及保护系统TheCommissioningofNo.5UnitinZouxianPowerPlant—TSI&ProtectionSystemofBFPT(250021)山东电力建设调整试验所林存... 相似文献
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渭河发电厂5号机组热化学试验ThermochemistryTestingofNo.5GeneratingUnitinWeihePowerPlant(710054)西北电力试验研究院李海燕1引言渭河发电厂三期5号机组为300MW,锅炉为东方锅炉厂生产的... 相似文献
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1994年照明电器新进展(电光源部分)王建群编译一、白炽灯和卤钨灯利特·特朗尼克斯国际照明公司(LiteTronics InternationaL Inc.)推出了长寿命的新型卤钨灯系列,其中55和190W卤钨灯的额定使用寿命长达5000小时;100... 相似文献
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在61届IEC年会期间,TC31H粉尘防爆电气设备分技术委员会会议也于1997年10月15日至19日在印度新德里举行。TC31H分委会主席W.W.Povall(英国),秘书R.E.Licht-ner(美国),中央办公室Erofisky出席会议,共有1... 相似文献
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Verderber R.R. Morse O.C. Rubinstein F.M. 《Industry Applications, IEEE Transactions on》1989,25(6):1049-1059
The electric and photometric characteristics of 40-W, cool white (CW) and 34 W, so-called lite white (LW) F40 T-12 fluorescent lamps were compared by operating them with electronic ballasts, static controls, and dynamic controls of different designs. The energy-saving krypton-filled 34 W lamp-ballast system is, at best, slightly more efficacious than the standard 40 W argon-filled lamp-ballast system by virtue of the use of lite white phosphor. The 34 W system is shown to have limitations that include higher starting voltages, reduced temperature range of operation, smaller dimming range, and poorer color rendering than the standard cool white 40 W lamp system 相似文献
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溅射功率对Sn薄膜负极材料循环性能的影响 总被引:2,自引:1,他引:1
采用磁控溅射法分别在150、250、400 W功率下制备了3种锂离子电池用Sn薄膜负极材料.通过X射线衍射光谱法(XRD)、扫描电子显微镜法(SEM)、恒电流充放电对3种薄膜材料的结构、形貌及循环性能进行了表征.实验结果表明,随着溅射功率增加,薄膜的非晶成分减少,晶化加剧,颗粒粗化.在相同溅射时间20 min的情况下.当溅射功率为250 W时,获得的Sn薄膜电极具有最好的循环性能,首次嵌锂容量为653.8 mAh/g,30次循环后容量维持在515mAh/g.容量保持率达79%. 相似文献
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Minassian A. Thompson B.A. Smith G. Damzen M.J. 《IEEE journal of selected topics in quantum electronics》2005,11(3):621-625
We present results of an investigation to scale a diode-pumped A Nd:GdVO/sub 4/ laser system to high powers (>100 W) using a bounce amplifier configuration. A Nd:GdVO/sub 4/ laser oscillator with a bounce amplifier geometry, pumped by a single 40-W diode bar, gave 24 W of multimode output power (60% optical efficiency), and 20 W of TEM/sub 00/ output with M/sup 2/<1.05. Power scaling of the oscillator system with pumping by multiplexing two (nominally) 40-W diode bars gave 50.1 W of multimode output at 83-W diode pumping, 40 W of predominantly TEM/sub 00/ output from 81-W of diode pumping, and 34 W TEM/sub 00/ output (M/sup 2//sub x/=1.05,M/sup 2//sub y/=1.1) with an external slit spatial filter. Higher power scaling is achieved by using a master-oscillator power-amplifier (MOPA) configuration with the double-diode-pumped oscillator and a bounce amplifier pumped by a 3-bar diode stack. A multimode MOPA output of 100 W is achieved by single pass amplification with 145-W amplifier diode pumping and 104-W TEM/sub 00/ mode using a double bounce amplifier configuration with 180-W amplifier diode pumping. 相似文献
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邵晖 《国外电子测量技术》2017,36(1):12-14
Directional response is one of the most important parameters of pyranometer, which is crucial to evaluate the performance of the pyranometer by determining the responsivity and the corresponding radiation for solar beam radiation from different directions of the pyranometer. In the paper, the method for testing directional error is present, four pyranometers are tested, after data processing, the directional errors of a secondary standard CMP22 and a first class CMP11 are 4.5 W/m2 and 8.3 W/m2 respectively, which are within the nominal specification given by the manufacturer. Meanwhile, the directional error of a first class pyranometer FS-S6 is 11.0 W/m2, while the value of a second class pyranometer TBQ-2-B is 15.2 W/m2, which both meet the specification for classification. The results show that these four pyranometers can reach the levels recommended by WMO and ISO, which validates that the method is feasible and the China made pyranometers are reliable. 相似文献
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高压交联聚乙烯电缆高频损耗对局放脉冲识别的影响 总被引:1,自引:1,他引:0
等效带宽W-等效时间长度T分离技术一般通过W-T的2维笛卡尔坐标系的簇脉冲来识别局部放电(partial discharge,PD)脉冲。局部放电信号沿交联聚乙烯(cross Linked polyethylene,XLPE)电缆传播的高频损耗影响W-T簇分类。为此,提出1个近似传播分析模型,避开传播参数测量法对于长电缆的局限性和分析解方法难以测量半导电层复合介电常数的问题,将其用于分析局放脉冲的W和T与传播距离的关系;同时计算了高斯型PD脉冲的W和T,以及W、T与传播距离的数学关系模型;最后采用近似传播分析模型和数学关系模型针对实际电缆进行了仿真与测量。结果表明高频损耗对W分离影响较小,而对T分离在远距离时影响较大。可见,W-T簇分类对离测量点500m内的PD信号具有良好效果,而对远距离的PD信号主要依靠W来分离。 相似文献
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综合仪器和新一代自动化测试系统 总被引:2,自引:1,他引:1
李华 《国外电子测量技术》2005,24(12):1-4
综合仪器是关国国防部支持的,作为新一代自动测试系统计划的,模块式硬件和软件测试解决方案。综合仪器的概念是采用少量特定用途的硬件和软件测试模块,以便集成新型、紧凑、占用面积小的测试系统。为仪器供应商提供一种开放式通用系统结构平台,构建可缩放的、灵活的、可再用的、可互操作的自动化测试系统。 相似文献