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相量测量

相量测量的相关文献在1991年到2022年内共计283篇,主要集中在电工技术、自动化技术、计算机技术、测绘学 等领域,其中期刊论文77篇、会议论文8篇、专利文献489011篇;相关期刊55种,包括产业与科技论坛、城市建设理论研究(电子版)、苏州市职业大学学报等; 相关会议8种,包括中国高等学校电力系统及其自动化专业第二十六届学术年会暨中国电机工程学会电力系统专业委员会2010年年会、2010年全国输变电设备状态检修技术交流研讨会、中国高等学校电力系统及其自动化专业第二十三届学术年会等;相量测量的相关文献由1018位作者贡献,包括李鹏、于力、徐全等。

相量测量—发文量

期刊论文>

论文:77 占比:0.02%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:489011 占比:99.98%

总计:489096篇

相量测量—发文趋势图

相量测量

-研究学者

  • 李鹏
  • 于力
  • 徐全
  • 毕天姝
  • 刘灏
  • 张恒旭
  • 劳永钊
  • 方陈
  • 刘玉田
  • 刘舒
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 赵大凯; 赵庆生; 梁定康; 王旭平
    • 摘要: 提出一种考虑假数据攻击的动态相量估计方法。首先,通过对包含谐波、噪声等条件的电气信号进行泰勒级数展开,建立了适用于动态条件下的电气信号模型;然后,使用双次优渐消因子强跟踪卡尔曼算法(DSTKF)与基于欧几里得距离的假数据攻击检测方法对相量进行检测、跟踪和估计;最后,用所提的估计方法对含有噪声和假数据攻击的电气信号以及IEEE39节点故障信号进行仿真验证。结果表明该方法不仅可以检测出电气信号中的假数据攻击与突变,而且对动态相量具有较高的估计精度与跟踪能力。
    • 马嘉; 陈欣
    • 摘要: 为了解决因一次设备不带负荷、负荷相量无法测量带来的电流互感器极性接线正确性无法检验的问题,文章对继电保护无负荷相量测量方法进行研究。设定双向测量目标,划定互感无负荷相量测量波域,以此为基础构建暂态相控测量模型,采用同步相位处理实现无负荷相量测量。最终的测试结果表明,与传统的无线发射相量测量方法、传统磁阻相量测量方法相比,文章设计的暂态相控相量测量方法得出的测量差值较小,表明在实际应用中可靠性更强,具有实际的应用价值。
    • 赵震宇; 邓高峰; 朱亮; 李赫; 钟巨华; 唐璐
    • 摘要: 相量的准确测量可为电力部门提供电网准确动态数据,通过分析电网中不同地点、不同时刻的相量,可以发现窃电行为.提出双谱线对称插值FFT相量测量算法,给出了用于反窃电的实时相量测量装置硬件设计方案.论文详细介绍了信号调理与采集模块、数据处理模块、通信模块的设计原理,最后给出了仿真和测量结果.
    • 谭鑫; 李晓卉; 刘振兴; 丁月民; 赵敏; 王琦
    • 摘要: 针对智能电网相量测量设备竞争使用有限的网络通信资源时,会因资源分配不均而导致数据包延时或丢失,进而影响电力系统状态估计的精度这一问题,提出了一种采样感知加权循环(SAWRR)调度算法.首先根据电网相量测量单元(PMU)采样频率和数据包大小的特性,提出了基于PMU业务流均方差的权重定义方法;然后设计了相应的PMU采样感知迭代循环调度算法;最后将该算法运用到PMU采样传输模型中.该算法能自适应地感知PMU的采样变化,及时调整数据包的传输.仿真结果表明,与原始的加权循环调度算法相比,SAWRR算法减少了95%的PMU采样数据包的调度时延,降低了一半的丢包率,增加了两倍的吞吐量.将SAWRR算法运用到PMU数据传输中有利于保证智能电网的稳定性.
    • 于华楠; 杜瑶; 郭树旭
    • 摘要: 为了消除或减小采用GPS定时的同步相量测量中非精确同步采样所造成的测量误差,提出一种基于压缩传感理论修正离散傅里叶变换估计结果的高精度同步相量测量算法.该算法利用离散傅里叶变换对测量信号进行稀疏化,并采用狄利克雷矩阵为观测矩阵,通过压缩传感重构算法重构测量信号.仿真结果表明:与传统离散傅里叶变换方法相比,该算法在不需要延长测量时间的条件下能够有效消除或减小频谱泄露等误差,并在很大程度上提高了信号的相量测量精度.%GPS timing synchronization phasor measurement provides important basis for online analysis of wide-area power signal.Currently discrete Fourier transform method is widely used in synchronization phasor measurement.To eliminate or weaken the measurement error caused by the imprecise synchronous sampling,a high precision synchronous phasor measurement algorithm is proposed.It is based on Compressed Sensing (CS) theory,which modifies discrete Fourier transform to estimate the results.The reconstruction algorithm uses the discrete Fourier transform to rarefy the measuring signal,and takes the Dirichlet matrix as the observation matrix.It also refacors measurement signal with CS refactor algorithm.The simulation results show that,compared with the traditional discrete Fourier transform method,without extending the measurement time,the proposed algorithm can effectively eliminate or weaken the spectrum leakage error and greatly improve the phasor measurement precision of signal.
    • 黄纯; 刘洁波; 江亚群; 汤涛; 谢兴
    • 摘要: 故障电流信号的频率变化以及包含的衰减直流分量会严重影响基于傅里叶变换的相量测量算法的精度和动态响应速度.文中提出了一种利用强跟踪滤波器滤除衰减直流分量的动态相量测量算法.首先,将衰减直流分量用其二阶泰勒展开多项式来表示,在状态变量中添加衰减直流分量及其一阶导数和二阶导数,建立含有基波角频率、幅值等参数和衰减直流分量参数的故障电流的非线性状态空间模型,减小信号估计的模型误差.其次,为了提高扩展卡尔曼滤波器在系统达到稳定时对系统参数突变的跟踪能力,利用强跟踪滤波器递推估计各状态变量.所提方法能够有效抑制衰减直流分量对相量测量精度的影响,对时变故障电流信号具有良好的动态响应能力.采用所提算法对加噪声的数值信号以及ATP-EMTP故障仿真信号进行相量测量,结果验证了算法的正确性与有效性.%The frequency change of the fault current signal and the decaying DC component contained in the signal will seriously decrease the accuracy and dynamic response speed of the phasor measurement algorithm based on Fourier transform algorithm. This paper proposes a strong tracking filter algorithm for dynamic phasor measurement considering the decaying DC component.Firstly,the decaying DC component is expressed by its second-order Taylor polynomial,and the decaying DC component and its first and second derivative are all added to the state variable vector.Then this paper establishes a nonlinear state space model of fault current including angular frequency and amplitude of the fundamental component and the decaying DC component,to reduce the estimation model error.In order to improve the ability of extended Kalman filter to fast track the system parameter mutation when the system reaches a steady state,the strong tracking filter is used to recursively estimate each state variable.The proposed method can effectively decrease the impacts of the decaying DC component on phasor estimation and has good dynamic response to time-varying fault current signals.Finally,the proposed algorithm is used to measure the numerical signal with noise and the fault simulation signal generated by ATP-EMTP.The test results verify the correctness and validity of the proposed algorithm.
    • 刘洁波; 黄纯; 江亚群; 汤涛; 谢兴
    • 摘要: The synchronized phasor estimation algorithm is the core of the synchronized phasor measurement technology. So it is very important to improve the measurement accuracy and the dynamic performance of the algorithm in the power system dynamic condition. A dynamic phasor estimation algorithm is proposed in this paper based on strong tracking Taylor-Kalman filter (STKF). First, taken into account the impacts of harmonics and measurement as well as the time-varying characteristics of amplitude or phase, a state space model of dynamic electrical signals is established. Since the Taylor- Kalman filter (TKF) fails to fast track the system parameters mutation when estimating the state variables, the idea of strong tracking filter was introduced, where the estimation covariance matrix can be adjusted adaptively according to the mismatch degree between the theoretical and the actual residual. This change improved the ability of the traditional Kalman filter to track mutation signal. Test results of both numerical signal with noise and fault voltage signal generated by Matlab/Simulink show that the STKF algorithm has better step response performance, measurement accuracy and stability than the TKF algorithm.%同步相量估计算法是同步相量测量技术的核心,在电力系统动态条件下如何提高算法的测量精度和改善算法的动态性能至关重要.提出基于强跟踪泰勒-卡尔曼滤波器(STKF)的动态相量估计算法.首先在考虑谐波和噪声影响以及电气信号幅值、相位时变特性的基础上,基于动态相量的泰勒级数展开项建立动态电气信号的状态空间模型;然后考虑到基于泰勒-卡尔曼滤波器(TKF)的相量估计算法在递推估计各状态变量时无法快速跟踪系统参数突变的缺陷,引入强跟踪滤波器的思想,根据理论残差和实际残差的失配程度及时自适应性地调整估计协方差矩阵,增强了算法对时变电气信号的跟踪能力.分析含噪声的数值信号及Matlab/Simulink的仿真故障电压信号,结果表明,STKF算法比泰勒-卡尔曼滤波器(TKF)算法具有更好的动态响应性能和更高的测量精度,且稳定性更好.
    • 曹磊; 赵庆生; 王旭平; 郭尊
    • 摘要: 大部分相量测量算法将信号相量作为一个静态模型,因此对电网中经常发生的电压幅值和相角波动特别敏感.基于标准频率下动态相量模型的泰勒加权最小二乘法(Taylor Weighted Least Squares,TWLS)不仅提供了相量值,还提供了相量导数值,可以提高对电网动态状况的监测.在此基础上,提出了一种基于基波频率值的改进泰勒加权最小二乘法.首先用非线性最小二乘法得到基波频率值.然后介绍了基于测量基波频率值的改进泰勒加权最小二乘法推导过程,并对该算法所涉及的窗函数、数据窗长度和泰勒多项式阶数进行分析选择.最后采用不同的信号模型和实际数据来检验算法的性能.仿真结果表明:提出的改进泰勒加权最小二乘法的测量精度满足要求.%Most phasor measurement algorithms consider signal phasors as a steady-state model,so they are very sensitive to voltage amplitude and angle fluctuations that often occur in modem power grids.Taylor Weighted Least Squares (TWLS) algorithm relies on a dynamic phasor model at nominal frequency.The algorithm not only provide the phasor values but also give its derivatives to improve the dynamic monitoring of the power grid.On this basis,an improved TWLS method based on fundamental frequency is proposed.First,the fundamental frequency is obtained by nonlinear least squares method.Then,the derivation process of the TWLS algorithm based on the calculated fundamental frequency is introduced,and the window function,the length of the data window and Taylor polynomial order involved in the algorithm are analyzed and selected.Finally,different signal models and actual data are used to test the performance of the algorithm.The simulation results show that the accuracy of the improved TWLS algorithm meets the requirements of synchronized phasor measurement.
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