This paper analyses zero sequence DC selective leakage-protection principle and the idiosyncrasies of the protection criterion in the two-branches power grid; 本文以两分支电网为例,分析了零序直流选择性漏电保护原理及其保护判据特性。
Realizing generalized registration of medical sequence image using mutual information criterion 利用互信息量准则实现医学序列图像的广义配准
In the paper, the theory of sequence component fault phase selection and the criterion for the asymmetry fault during the power swing are presented in detail, which are used in EHV microprocessor based transmission line protection. 对超高压输电线路微机保护所用序分量选相原理和防止振荡时误选相所用的不对称故障开放判据进行了较详细的介绍。
The relation between synthesis increment and the zero sequence voltage percent at the time before arc suppression coil current changes and the change quantity is found. The criterion based on the principle of synthesis increment for detecting grounded feeder is established. 建立了综合增量与补偿电流变化前零序电压百分数和补偿电流变化量之间的关系,构建了零序电流综合增量法接地选线判据。
Secondly, a double stochastic interchange minimization algorithm is used to whiten the Gaussian sequence under the criterion of minimum mean-square error. 然后,在均方误差最小的准则下,应用双随机交换最小化方法对高斯分布的随机序列进行白色化处理。
The result of test indicates this design accord with sequence request of PCI criterion. 测试结果表明设计符合PCI规范的时序要求。
B_h Sequence and The Construction of m-ary Error Correcting Codes with Magnitude Error Criterion Bh序列和Magnitude错误标准下m元纠错码构造
Top window coverage criterion, user input coverage criterion and length n user input sequence coverage criterion were proposed based on the graph. Algorithms were presented to compute the coverage rate on every coverage criterion. 基于窗口导航有向图,提出了顶层窗口覆盖、用户输入覆盖和n长度用户输入序列覆盖准则,并设计了相应的覆盖率算法。
729A was bring forward, In which, the sequence of codebook search is reordered according to the criterion of mean squared weighted error between target vector and filtered adaptive codebook vector, and the algebraic codebook is searched until a predetermined threshold is satisfied. 929A的固定码本进行快速搜索的一种方法:码本搜索的顺序根据目标矢量和滤波后的自适应码本矢量间的加权均方误差重新排序,码本搜索直至达到预定的门限。
Some manufacturers claim that the zero sequence current is removed in the line current differential criterion and the sensitivity of the protection in the event of the earth fault is lowered. 有观点认为,线电流差动消去了零序电流,造成接地故障时的灵敏度降低。
In the paper, we utilize wavelet transform to analyze the transient zero sequence current and put forward a new criterion to select the fault line through many simulation experiments. 在理论研究和比较分析的基础上,利用小波包对故障暂态电流信号进行变换,提出了一个新的选线方法。
Based on the least-autocorrelation of the residual sequence, the LAC testing criterion of model fitting and its recursive algorithm are proposed to identify and estimate the structure and parameters of ARMA ( p, q) models. Many successful results were obtained in practice. 基于残差序列最小自相关原理,提出了模型适用性LAC检验准则及其递推算法,用于辩识和估计ARMA(p,q)模型的结构和参数,在实际应用中取得了较满意的结果。
On the basis of uniform distribution of good lattice point sequence, we give an actual algorithm and its stop criterion. 本文利用数论中的一致分布佳点集列,较为简便的得出了多目标最优化的积分总极值的实现算法和算法终止准则。
Words segmentation is a process that successive character sequence is once again combined to word sequence according to definite criterion. 分词就是将连续的字序列按照一定的规范重新组合成词序列的过程。
In this paper, the conventional pseudo-random sequence linear complexity is discussed, and a new criterion is proposed, based on the approximate entropy. 分析了已有的序列线性复杂度分析方法,提出了用近似熵算法计算混沌运动的测度熵,作为衡量混沌伪随机序列复杂度的标准。
Subjective tests are simulated with three sets of sequence pictures of the sampling frequency 10 MHz. Masking functions are measured to design non-linear quantizers with a minimum number of levels criterion. 用三组序列图象(抽样频率10MHz),通过计算机模拟作主观实验,测定了掩盖函数,并用最小量化分层数目的准则,设计非线性量化器。
Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank. 针对单纯采用相电流判据的不足之处,本文提出增加零序电流、负序电流及电流变化量判据,以有效地避免保护误动或者拒动。
The whiteness of the innovation sequence for an optimal filter was explored to be the criterion for the correction of the wavelength positioning errors which may occur in spectral scans. 以新息序列的平均平方和为评价函数优化扫描光谱的峰位,消除扫描过程中可能产生的波长定位误差,从而保证滤波结果的准确性,并使实际检出限显著改善。
Multi-target positioning method using hopping-frequency signal based on COSTAS array and the signal based on the OFDM combined with GOLD sequence is also studied in this dissertation. The author proposes a position and attitude solution algorithm and suggests an interfacing criterion. 本文研究了基于COSTAS阵列的跳频信号和基于OFDM调制与GOLD序列相结合的多目标定位技术,在此基础上提出了一种位姿解算算法,并导出了对接的准则。
The relationship between the SNR of the channel equalizer and the training sequences power is analyzed. The optimal power allocation of the training sequence is derived based on the criterion of maximizing SNR of the equalizer. 给出了信道均衡器的信噪比与信息序列、训练序列以及噪声功率的关系,并根据此关系推导了ST系统基于均衡器信噪比最大的训练序列和信息序列最优功率的表达式。
Initial criterion was made up of zero and negative sequence voltage, together with positive voltage, which was used for narrowing the fault area down, decreasing the information upload to primary substation. Fault recognition criterion can reinforce the reliability of wide area back-up protection. 基于零序和负序电压以及正序低电压结合的启动判据可以缩小故障范围搜索和减少所需上传信息量,故障确认判据可以进一步加强广域后备保护的动作可靠性。
From the sequence correlation requiring of Turbo codes coding and decoding, correlation of sequence is proposed as a criterion to design interleaver. a good interleave scheme called clinodiagonal interleaver is obtained. 通过Turbo码编译码对分量码输入序列相关的要求,提出了以序列交织前后相关性作为交织器设计性能是否优异的判据,并得到一种斜对角交织方案。
The registration sequence is a very important criterion judging the priority of the real right. 登记顺位是判断不动产物权之间优先力的重要标准。