关于具有点可数WCS—网的空间

借助一些序列复盖映射，给出了具有点可数WCS网的空间的一些特征。     

关于局部紧度量空间的cs—映象

分别建立了局部紧度量空间在cs-映射和紧复盖cs－映射下的象空间的特征。     

关于具有局部可数基的空间

为建立具有局部可数基的空间和度量空间之间的关系，证明了：（１）空间Ｘ是具有局部可数的空间当且仅当Ｘ是某一局部可分度量空间的紧复盖、开、ＳＳ－映象，当且仅当Ｘ是某一度量空间的开、ｓｓ－映象；（２）空间Ｘ是具有局部可数基的ｋＲ－空间当且仅当Ｘ是某一局部可分度量空间的紧复盖、Ｒ－商、开、ｓｓ－映象当且仅当Ｘ是某一度量空间的Ｒ－商、开、ｓｓ－映象；（３）空间Ｘ是具有可数基ｋＲ－空间当且仅当Ｘ是某二可分度量空间的Ｒ－商、开映象．     

关于赋拟范线性空间中的连续线性算子

本文给出一类广义的赋拟范空间,并在该空间内建立连续逆算子定理,闭图象定理及一致有界性定理。此外又得出有界线性算子的延拓及商空间的完备性等。     

关于CS-映射

分别建立了度量空间在CS 映射和紧复盖CS 映射下的象空间的特征 .     

关于Katuta—Junnila问题的注记

设空间X是σ－ortho-紧的且X的每一定向开复盖有σ－垫状加细，则X是次亚紧的，部分地回答了Katuta-Junnila问题。     

向量值加权Sobolev空间

数值Sobolev空间已有较完善的理论,本文的目的在于推广其到向量值加权情形。首先通过讨论拟微分算子在向量值加权L~p空间L~p(l~q,w)的有界性,引入了向量值加权Sobolev空间,讨论了该空间的基本性质,得到了其加权嵌入定理等结论。     

2—距离空间上的扩张映射

本文指出把Banach空间中的扩张映射平行地引入到2－距离空间，尽管在形式上可以得到相同的结论，但实际上满足这些结论条件的空间有时只能为一单点集或映射只能为一恒等映射，从而说明这种平行引入是不理想的。     

齐型加权Block空间上的广义Calderon－Zygmund算子

对建立在齐型空间上的加权Ｂｌｏｃｋ空间中的广义Ｃａｌｄｅｒｏｎ－Ｚｙｇｍｕｎｄ算子，证明了其加权Ｂｌｏｃｋ有界性．     

关于K－映射

给出了度量空间的Ｋ－映象的几个特征，证明了Ｋ－映射保持具有点可数Ｋ－网的空间     

多直线遮挡器原理失步保护的整定算例及测试方案

介绍多直线遮挡器失步保护的原理,并以某电厂为例,介绍了对失步保护的整定算例的计算过程,并提供了一种实用的失步保护静态模拟测试方案（包括测试接线图、失步保护边界电阻定值和变压器电栓定值的测试,以及失步保护的滑极次数的测试）。     

Comparison and Ranking of Steam-Turbine Installations of Thermal Power-Stations’ Power-Generating Units by Working Efficiency

Increasing the objectivity of comparison and ranking of working efficiency of steam-turbine installations of thermal power-stations' power-generating units under conditions when the accuracy of technical and economic indices (TEI) to be calculated by energy characteristics leaves much to be desired; in other words, the results of TEI analysis are far from objective, and the improvement of analysis techniques of TEI is not only actual but also necessary. Traditionally, the analysis consists of comparison of actual and normal values of TIEs. The discrepancies of these values define the reserve of thermal economy and recommendations ensuring the enhancement of working efficiency of thermal power stations (TPS). Systematic improvement of recommendations' reliability is ensured by experimental clarification of energy characteristics 4 years on average after the major repair of a power-generating unit (PGU). In time, wear leads to increasing the calculation error of rated values of techno-economic indices and amendments taking into account aging. Finally, there comes a point when a manual clarification of rated TEIs becomes economically unsuitable. In accordance with the Rules for Technical Operation, the analysis results of TEIs are needed to ensure the most economical operation of powergenerating units, the development of schedules of repair and adjustment and alignment of power-generating units, the estimation of quality of operational personnel work, and drawing up of accounts on the thermal efficiency. Personnel should solve all these problems, as well as many others, depending on the difference of the actual average monthly and approximate rated values of dozens of TEI. It is proposed, along with the methods of analysis, to apply the methods of synthesis of TEI. The methods of synthesis require overcoming the influence of difference in dimensions, the influence of interrelation of TEI, and the operating conditions of powergenerating units. The possibility for synthesis of TEI manually is practically excluded, since their bulkiness and multiplicity cause a high risk of erroneous decisions. An automated analysis and synthesis system of TEI of thermal power stations' power-generating units was developed. It provides, along with the information support of personnel, methodological support in the form of recommendations for enhancement of working effectiveness of both individual power-generating units and thermal power stations as a whole. The objectivity of these recommendations is undoubted within the framework of initial data.     

智能电器监控单元静电放电敏感性的实验研究

为研究智能电器监控单元的静电放电敏感性,利用静电放电发生器对设备机壳放电进行了实验研究。根据静电放电干扰的耦合途径以及智能电器监控单元的实际工作情况,选取电源模块直流侧电压作为研究智能电器监控单元的静电放电敏感性的对象,通过频谱分析得出直流侧对地电压和静电放电电压间的关系。装置采取屏蔽、接地和滤波等抗干扰措施时其静电放电敏感性降低,分析直流侧电压发生的相应变化得出结论:静电放电时,智能电器监控单元直流侧对地电压与装置的静电放电敏感性有一定的相关性。     

Using the sensors of shaft position for simulation of misalignments of shafting supports of turbounits

Examples of using the method developed for the earlier proposed concept of the monitoring system of the technical condition of a turbounit are presented. The solution methods of the inverse problem—the calculation of misalignments of supports based on the measurement results of positions of rotor pins in the borings of bearings during the operation of a turbounit—are demonstrated. The results of determination of static responses of supports at operation misalignments are presented. The examples of simulation and calculation of misalignments of supports are made for the three-bearing “high-pressure rotor–middle-pressure rotor” (HPR–MPR) system of a turbounit with 250 MW capacity and for 14-supporting shafting of a turbounit with 1000 MW capacity. The calculation results of coefficients of the stiffness matrix of shaftings and testing of methods for solving the inverse problem by modeling are presented. The high accuracy of the solution of the inverse problem at the inversion of the stiffness matrix of shafting used for determining the correcting centerings of rotors of multisupporting shafting is revealed. The stiffness matrix can be recommended to analyze the influence of displacements of one or several supports on changing the support responses of shafting of the turbounit during adjustment after assembling or repair. It is proposed to use the considered methods of evaluation of misalignments in the monitoring systems of changing the mutual position of supports and centerings of rotors by half-couplings of turbounits, especially for seismically dangerous regions and regions with increased sagging of foundations due to watering of soils.     

自动化检定流水线环境下射频信号对智能电能表误差的影响分析

随着智能电网的不断发展和完善,智能电能表作为计量电能的终端产品被广泛应用,而对其检定的自动化程度也越来越高,因此,智能电能表自动化检定流水线得到快速发展。与此同时,智能电能表自动化检定流水线的环境中,移动通信射频信号对电能表计量准确度的电磁辐射影响也逐渐引起了关注。为了研究射频信号对电能表计量的影响,文中分析了射频信号对电能表计量影响的干扰途径,分析了射频信号影响电能表计量的机理。测试了自动化检定流水线的环境中射频干扰信号的强度,基于干扰信号的调制方式建立了干扰信号数学模型,根据干扰信号数学模型和实测射频信号的功率谱,通过仿真分析确定了干扰信号对电能表的影响属于一种均匀性分布的噪声。建立了射频信号对电能表计量误差影响的数学模型,通过仿真分析电能表误差,给出智能电能表大规模自动化检定流水线射频信号的影响结果。     

直流输电系统共用接地极的暂态接地性能分析

针对直流输电系统共用接地极的几种故障类型,对入地电流的暂态过程进行频谱分析,总结出共用接地极入地电流暂态过程频谱低于200 Hz的特点。基于此特点进一步分析共用接地极在入地电流暂态过程中的响应,得出如下结论：暂态响应的波形近似等同于入地电流的波形,暂态响应峰值与稳态响应的比值,即为暂态电流峰值相对于系统额定电流的比值。结合接地极设计的重要指标--跨步电压的标准,可得出如下结论：对共用接地极的设计可不必考虑故障时入地电流的暂态过程对周围环境的影响。     

FTGS-放大滤波板故障的测试与研究

通过遥供音频无绝缘轨道电路(FTGS)对故障数据的提取分析,以及轨电位分布理论及对信号设备影响的理论研究,确定放大滤波板故障与轨电位异常相关.经过现场测试验证,轨电位升高是放大滤波板故障的原因之一,轨电位升高导致放大滤波板输出电压下降,放大滤波板的输出电容温度升高,最终导致放大滤波板的输出电容疲劳损坏.     

Assessing the Parameters of Elementary Components of an Electrical Quantity with a Small Number of Counts

Two problems of structural analysis of electrical quantities are considered: the suppression of spectral components and selection of orthogonal harmonic components of unknown frequency. Each procedure starts with a minimum possible number of counts of the electrical variable to be processed and, as a consequence, with a minimum number of operations. The tools of structural analysis include a multilink adaptive filter, each link of which tuned to suppress one component of the observed electrical value. Structural analysis is completed with a separate procedure of selection of orthogonal components of the fundamental frequency component, the value of which is to be determined. The tuning of the real-time multilink filter done in the form of an iteration process. At each iteration step, only one link of the filter is to be tuned.     

直接空冷系统轴流风机群运行特性分析

掌握直接空冷系统轴流风机群运行特性,对于电站空冷系统的优化设计和高效运行有重要意义。该文在2台风机并联运行的基础上,绘制并联风机的性能曲线,获得叶片安装角对并联风机运行特性的影响。通过引入集群因子,得到轴流风机群的性能曲线、空冷管束的阻力特性及空冷系统的工作点。结果表明,空冷系统风机群每台风机的流量介于风机并联运行和单台风机独立运行之间。风机群性能不仅取决于每台风机的性能,还与风机群的数量和布置方式有关。随空冷系统容量增加,风机群非线性效应增加。在一定程度上揭示出空冷系统传热面积随机组容量非线性放大效应的机理,为空冷系统设计提供了理论依据。     

Quantized thermal depolarization of solid dielectrics

Contrary to the Debye's theory of a distribution of relaxation times, the logarithm of the relaxation current plotted as function of time has several nearly straight sections of decreasing slopes. The slopes formed short series having common geometrical ratios of ~2, 1.5, and 1.2. The ratios represent stepped changes of the probability of charge carrier excitation, generally caused by the stepped decrements of the displacement potential of the polarized charges. As energetic polarization waves deliver activation energies, large groups of charge carriers display mean decrements of energy in steps of single phonons. The model provides new methods of estimating Planck's constant and of the atomic heat capacity. The experiments and the model suggest that all solids obeying the Dulong-Petit law display one value of mean infrared frequency of vibrations. Based on this frequency a novel solid state constant kTln 2 is proposed representing quantum energy steps displayed in most solid state thermal relaxations. The measurements of ratios of time constants creates a new field of spectroscopic studies of the phonon vibration interactions displaying energies of the order of 10^-2 eV. The present results may support the hypothesis that the eigenfunctions of Maxwell's equations are represented by a pulse instead of a monochromatic wave