采样值
- 网络Sample Value;Sampled Values
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IEC61850-9-2标准规定了间隔层和过程层之间通信的特定通信服务映射,规范了采样值的网络传输方式。
Specific communication service mapping between the bay level and the process level is defined in IEC61850-9-2 , which is the standard of the network transmission for the sample value .
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采样值电流差动保护一种新动作判据的研究分析
Analysis of a new action criterion for current sample value differential protection
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矢量控制中电流采样值的定点Q格式处理
Fixed-point DSP 's Q Format Process to Current Sampling Data in Motor Vector Control System
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变电站Web发布系统实现了变电站远程监视功能,其中还包括保护定值、采样值和录波波形等信息的查看。
The substation Web distribution system realizes the remote supervision functions , including examining the setting of protective relayings , sampling values and recorded waveforms , etc.
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然后计算N个搜索频率的输出采样值的平方就得到了N功率值。
The magnitude of the square of each of the output samples is calculated to produce N power quantities , corresponding to N search frequencies .
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可视度函数是空间频域的采样值,在做Fourier逆变换之前需要将样本点插到一个均匀的网格上。
Visibility function is the sampled value in space frequency field which should be inserted in a symmetrical grid before making Fourier inverse-transformation .
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系统中速度或扭矩设定值与采样值之间的差值作为典型模糊控制器的输入偏差e,e的变化率为e。
The velocity or force error between preconcerted value and sample is e ' and it is taken as the input error of the typical Fuzzy controller .
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基于线性Lagrange插值法的变电站IED采样值接口方法
A Sampled Values Interface Method for Substation IED Based on the Linear Lagrange Interpolation Algorithm
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着重讨论了采样值差动与瞬时值差动的区别,采样值差动的两个关键参数R和S在不同应用对象时的选择方法。
The differences between the sampling value differential protection and transient value differential protection , the methods for selecting the main parameter R and S in different applications are discussed .
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该装置采用了双CPU结构,其中主保护CPU采用了带以太网接口的32位RISC微处理器MCF5272,它负责完成接收采样值及保护计算的任务。
This set applies double CPU configuration , one is 32 bits RISC MCU with Ethernet interface .
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提出了结合分布式母线保护的采样值传输和GOOSE传输实现方案,并进行了分析。
Bring forward a transfer scheme of transmission of samples values and GOOSE which combine with distributed bus protection , and then analyzed .
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证明了定点采样值的分段量化处理的可行性,发现了一种具有特殊性质的模拟余量A2。
Feasibility of piecewise quantization on a sampling data was proved , and the characteristic remainder A2 of an analogue quantity was introduced and presented .
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基于IEC61850标准的采样值传输模型构建及映射实现
Modeling and mapping implementation of a sampled value model based on IEC 61850
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基于IEC61850标准的过程层采样值传输
Research on the transmission of sampled values of process layer based on IEC 61850
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介绍了对等通信的概念和特点,对数字化变电站中基于对等通信模式的采样值信息传输和GOOSE信息传输进行了详细分析。
With the introduction to the concept and characteristics of peer-to-peer communication , the sampling transmission and GOOSE information transmission which both employ peer-to-peer communication mode are researched thoroughly .
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文章叙述数字语音信号的基于FFT的非均匀重采样值重构的技术实现问题,并对实际的WAV格式的数字语音文件的重采样值用VC++6.0编写的程序实现了基于FFT的重构;
Implementation of recovery of nonuniform resampling for speech signal stored in WAV format is described based on Discrete fast Fourier transform ( FFT ) in the paper .
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分析了相应闭环系统的稳定性;比较了基于状态采样值的采样LQ控制和基于状态全过程的常规LQ控制下的最优指标值;
In addition to stability analysis of the closed-loop systems , the index difference between sampled-data-based LQ control and conventional LQ control is investigated .
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分析了采样值传输(SVC)和通用变电站事件(GSE)2类重要的通信服务。
· The two most important communication services , Sampled Value Class ( SVC ) and General Substation Event ( GSE ) , are analyzed systematically .
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为了适用于任意的震源子波,用Z变换获取在第一层顶部处上行波的地层冲激响应函数,并导出其采样值序列的时域递归算法;
In order to suit to any source wavelets , Z-transform is used to obtain impact response function of upgoing wave at top of the first layer , and the time-domain recurrence algorithm for sampling datum series is developed ;
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然后将粗糙集的分类结果与故障信息中的输出电压Ud采样值作为神经网络的输入,实现故障元的定位。
Then the sampled-data of Ud is input to the BP neural network together with the outcome of rough set to locate the fault part .
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这种算法能够如GMM一样准确地估计像素点上采样值的概率分布,同时能够像Codebook算法一样有较少的经验参数和实时高效的计算性能。
This algorithm can estimate the probability distribution of its pixel by the sample value as accurately as GMM , while having no experience parameters and computing in real-time as the Codebook .
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以矢量控制中的电流采样值的处理为例,分析了其标幺值的Q12格式表示方案。
An example of process to current sampling data was presented to analyze the Q12 format of per unit .
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利用天线阵列分布及其相应的阵列方向图与离散傅里叶变换对之间在数学上的同构,对不同空间角度上阵列方向图的采样值进行离散傅里叶变换(DFT)来重新确定天线阵列的激励分布。
Base on the mathematical conformation between antenna array distribution to its far field and DFT to IDFT , we discuss how to obtain the array distribution by sampling far field pattern in some space angles based on DFT .
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遵循IEC61850-9-2实现变电站采样值传输
Implementation of Sampled Value Transmission Complying With IEC 61850-9-2
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同时根据采样值系统计算了频率、有效值、谐波、功率因数等电量,并通过RS-485通信口与二级子站微机相配合,达到智能控制的作用。
In such way , the frequency , the virtual value , the harmonic and power factor are acquired . It can achieve the intelligent control by way of cooperating with master station automatic apparatus system through adopting RS-485 communication standard .
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为了不改变传统保护、测控装置算法,分析了采用线性Lagrange插值原理对合并单元输入的采样值进行数据抽取的方法,进行了误差分析,并分析了谐波信号对插值算法的影响。
In order to apply the traditional algorithms in IED in the substation automation system , the linear Lagrange interpolation algorithm for sampled values from the merging unit is studied . The error and the effect of the harmonic signal on the interpolation algorithm are analyzed .
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首先,建模了两个逻辑设备&向间隔层IED传输采样值和状态量的合并单元和向断路器、隔离开关传输控制命令的开关控制单元。
Firstly , two logic devices are modeled & the merging unit which transmits the sampling value and state variable to IED of bay level and the switch control unit which transmit control command to breakers and disconnected switches .
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针对IEC61850所定义的过程总线上采样值高精度同步要求,提出了一种基于IEEE1588的合并单元同步实现的新方案。
According to the requirement for highly accurate synchronization of the sampled values on the process bus defined in IEC 61850 , a novel scheme based on the merging unit synchronization of IEEE 1588 is proposed .
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实现方法、实现程序及结论不仅对WAV格式的数字语音文件有效,而且也适用于其它格式的数字语音文件和非语音信号的非均匀采样值重构的实现。
The implementation methods and software programs are not only effective to digital speech signals of WAV format , it can be extended to other formats also . Moreover , it is helpful to recovery of digital non-speech signals or sequences .
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试验数据分析表明,OLF-1在线铁谱仪对大磨粒有很强的敏感性,其采样值的大小和变化反映了齿面状态的变化。
The analysis of experiment data shows that OLF 1 on line ferrography is very sensitive to large wear debris , and the size and variety of sample values reflect the variety and tendency of gear surface condition .