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电厂主要电气设备的调试方法探析 总被引:1,自引:1,他引:0
吴政国 《中国新技术新产品》2010,(14):143-144
本文首先简单介绍了电厂电气主设备(包括一次及二次设备)及其原理,一次设备比较深入的介绍发电机、变压器及电力互感器等设备的原理,其次介绍了电厂电气分系统调试及整套启动电气调试的主要内容,让大家对整个电厂的电气系统调试有比较深的及特点,最后介绍了电厂主要电气设备的调试方法。 相似文献
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本文介绍了泰国最大的TPI PL水泥厂余热发电工程的概况,介绍了相关设备主要参数及技术特点和项目的经济性分析。并介绍了水泥窑余热回收原理及前景。 相似文献
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综述了家庭影院计算机(HTPC)目前的发展现状豢功能。具体介绍了自己DIYHTPC时最重要的软硬件及其指标,硬件着重介绍了声卡的编解码能力及接口,软件着重介绍了解码器、播放器及媒体中心。 相似文献
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本文简单介绍了重型板式给料机的工作原理及主要结构,详细介绍了浮动式传动装置的性能优势及驱动链轮的结构优化。 相似文献
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A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling. 相似文献
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An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a
rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate
agreement is demonstrated between the derived relations and experimental data. 相似文献
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水三相点是开尔文热力学温度的唯一基准点,也是ITS-90国际温标重要的定义固定点。因此,水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来,中国计量科学研究院研制出一系列高质量的水三相点容器,加强了水三相点的研究,为不确定度的分析提供了更为可靠的实验依据。同时,不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此,根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明,其扩展不确定度为0.16mK(k=2.69,P=0.99)。 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue. 相似文献
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