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real power     
相关语句
  有功功率
     An Expert System for Real Power Corrective Control of Electric Power Systems
     电力系统有功功率校正控制专家系统
短句来源
     Sub-band RMS, real power and reactive power measurement principle and algorithm based on wavelets are introduced, and then 90°phase-shift networks used in reactive power measurement is introduced.
     介绍了小波变换有效值、有功功率分频带测量的基本原理与算法,以及90°数字相移网络及基于该网络的无功功率分频带测量的基本原理与算法。
短句来源
     We can control the wind speed by control the power and control the real power by control the phase.
     通过向电网输入功率大小的控制达到控制转速的目的,通过功率因数的控制达到向电网输入有功功率的目的。
短句来源
     Real power control of hydraulic turbine set based on improving TD and arranging transient process
     基于改进TD设置过渡过程的水轮发电机组有功功率控制
短句来源
     To solve precision problem of power when the power factor is lower,ATT7022 is used as the core to gather AC quantities to make the precision of real power meet 0.5 s and the one of reactive power meet the second-level.
     针对现行电机测试系统在功率因数低时,功率测量精度差的问题,提出了以ATT7022为核心的交流物理量采集方法,使有功功率的精度满足0.5 s,无功功率精度满足二级要求.
短句来源
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  实际电力
     The fact of that the critical boundary of practical dynamic security region (PDSR) in real power systems can be described as one or a few hyper planes in injection space provides an effective tool for optimizing security control.
     实际电力系统的实用动态安全域(practical dynamic security region,PDSR)的临界边界可表示为节点注入空间的一个或几个超平面,这为最优安全控制提供了有效的解析工具。
短句来源
     The proposed model and algorithm are applied to the RBTS system, IEEE One Area RTS96 system and a real power system for reliability computation and analysis.
     通过对RBTS系统、IEEE-RTS96区域A系统和一个实际电力系统进行的可靠性计算分析,验证了提出的算法的正确性和有效性。
短句来源
     The proposed approach is applied to IEEE-118、IEEE-RTS 96 and a real power system, and the results show that the method is correct, feasible and valid.
     通过对IEEE-118、IEEE-RTS96系统和一个实际电力系统进行的计算分析,验证了方法的正确性、可行性和有效性。
短句来源
     In this paper, the power network planning method based on the immune algorithm has also been applied in a real power network in China and a good planning result is obtained.
     本文还将基于免疫算法的电网规划方法应用于我国某实际电力网络 ,取得很好的规划结果
短句来源
     The proposed model and algorithm are applied to the RBTS system, IEEE One Area RTS96 system and a real power system for reliability computation and analysis. Results show that the new algorithm is credible and validity.
     通过对RBTS系统、IEEE-RTS96区域A系统和一个实际电力系统进行的可靠性计算分析,验证了提出的算法的正确性和有效性。
短句来源
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  实际功率
     The Fraunhofer diffraction picture of grinding wheel topography is theoretically analyzed, and its real power spectrum pattern is also described with the experimental method.
     首先从理论上分析了砂轮工作面形貌的夫琅浩费衍射图像,然后通过试验分析了其实际功率谱型。
短句来源
     In this paper, graph theory is used to calculate the contributions of individual generators and loads to line flows and the real power transfer among individual generators and loads that are significant to transmission open access.
     随着输电系统的开放 ,人们越来越要求按照线路的实际使用情况收费。 该文利用图论快速计算输电线路的功率组成和发电机与负荷间的实际功率输送关系 ,从而为输电服务收费提供合理的依据。
短句来源
     In this paper,based on the experiment of greenhouse cleaning machine,the torque of turbine,theoretical power,real power and efficiency are obtained through dealing with experimental data using Excel.
     用Excel对大棚清洗机的实验数据进行处理,得出了清洗机水轮转矩、理论功率、实际功率和效率曲线;
短句来源
  实权
     The Reform Movement of Wuxu is that for an experiment of his thought , the movement failed beacuse the emperor didn’t has real power.
     戊戌变法是康有为这种君主思想的一次实验,但由于光绪皇帝并没有实权,变法失败。
短句来源
     Their exact ident ity should be ordinary landlords in high repute but without real power.
     其确切身份是有名望但无实权的普通地主
短句来源
     After Japan was defeated,the Mikado became the symbol of the nation,which had no real power based on the new constitution.
     日本战败投降后 ,根据战后新宪法 ,天皇成为没有政治实权的国家的象征。
短句来源

 

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      real power
    The paper gives general formula (17) for coefficients of any real power ζ of a generalized power series (4).
          
    In addition, we discuss coverage-capacity curves as a function of the percentage of satisfied users, taking into account also the imperfections of the real power-control procedures.
          
    The lack of systematic experimental works makes a wide comparison with the theoretical results very difficult, so the real power of the models can not yet be fully assessed and only introductory considerations are tentatively given.
          
    This has naturally led to the speculation that by abandoning past fixity real power over the past may be possible.
          
    The model is compared with two sets of real power plants, the first one containing power plants of old design (before 1960's) and the second one being formed by modern nuclear power plants.
          
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    Let X(t) be a stationary ergodic random signal, then its power spectrum density at frequency f isWhen we find the power spectrum density by means of the power spectrum density analyzer, the time of integration T. the filter bandwidth B and the RC-time constant of the integrator are not ideal, therefore the output of the analyzer is a random variable. This paper derives the formula used to calculate the influence of the RC-time constant to the output of the analyzer. The output of the analyzer is a biased estimate...

    Let X(t) be a stationary ergodic random signal, then its power spectrum density at frequency f isWhen we find the power spectrum density by means of the power spectrum density analyzer, the time of integration T. the filter bandwidth B and the RC-time constant of the integrator are not ideal, therefore the output of the analyzer is a random variable. This paper derives the formula used to calculate the influence of the RC-time constant to the output of the analyzer. The output of the analyzer is a biased estimate of the real power spectrum density. When T≥4RC, the relative deviation may be less than 2%. The RC-time constant has no significant influence to the statistical error, but the relative deviation may be more than 20 db when the time of integration T is too short. The relative accuracy may be adjusted by the standard Sine signal. The-oretical results presented in this paper are examined to be coincident with the experimental ones.

    设x(t)是平稳的,各态历经的随机过程,则在频率f的功率谱密度W(f)为在用电子模拟设备求功率谱密度时,积分时间T、带宽B及积分器的积分常数都不是理想的,从而模拟设备一次处理的结果是一个随机变量。本文分析了积分器的时间常数的影响。分析表明:由于积分器的时间常数RC的存在,模拟设备输出的功率谱密度是真功率谱密度的有偏估计,当T≥4RC时,其相对偏差可小于2%。分析表明:RC对统计误差基本上没有影响。但积分时间如选得过短,将可能产生多达20db的相对偏差。用标定的正弦信号可判定所选的积分时间是否合适。文中附有试验的记录曲线,它说明试验与理论分析是一致的。

    A random distribution with multiparameter is presented with its numerical features discussed. Many common distributions, such as that of Chi-square, Gamma, Rayleigh, Maxwell, Exponential, Erlang and Webull, etc. are all special ones which can be developed from the distribution proposed. It is proved statistically that the positive real power of the square sum of one or more independent subsamples out of the normal distribution follows this distribution. Several important deductions are made and an example...

    A random distribution with multiparameter is presented with its numerical features discussed. Many common distributions, such as that of Chi-square, Gamma, Rayleigh, Maxwell, Exponential, Erlang and Webull, etc. are all special ones which can be developed from the distribution proposed. It is proved statistically that the positive real power of the square sum of one or more independent subsamples out of the normal distribution follows this distribution. Several important deductions are made and an example of practical interest is given.

    本文提出了一个多参数的随机分布,讨论了它的数字特征.常见的几种分布是这种分布的特殊情形.在统计学上,文中还证明了几个服从标准正态分布的独立子样的平方和的正实数幂也服从这种分布,并获得几点重要推论.

    The self-tuning technology is a new branch of the mordern control theory. In this paper we try to present the application of the self tuning prediction approach to the power system load forecasting. After a short introduction of its basic principle, a new power system load model is proposed in the paper, as it is the key-point of the forecasting problem. Simulation with a set of real power system ioad data shows that the average prediction error is about 3.24%. It also demonstrates that the approach has...

    The self-tuning technology is a new branch of the mordern control theory. In this paper we try to present the application of the self tuning prediction approach to the power system load forecasting. After a short introduction of its basic principle, a new power system load model is proposed in the paper, as it is the key-point of the forecasting problem. Simulation with a set of real power system ioad data shows that the average prediction error is about 3.24%. It also demonstrates that the approach has a number of advantages such as simple algorithm, good convergence, etc.. It is considered that the approach is applicable while further work is needed for its practical application.

    自校正技术是现代控制理论中的一个新分支。本文的目的是要将自校正预测技术应用于电力系统负荷预报。为此,首先简要地叙述了自校正预测器的基本原理,然后根据电力负荷序列的特性提出一个新的负荷模型。少量试验结果给出预报误差均值为3.24%,整个过程体现了自校正预测器算法简单,收敛性好等优点,该方法是可行的。

     
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