Description: DC load flow is a method to estimate power flows through lines on AC power systems. It uses a modified version of AC load flow using a linearized version of it. Programming is done in Matlab. Platform: |
Size: 1024 |
Author:mmbaskr |
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Description: 求系统单位给定阶跃响应的性能指标（超调量，峰值时间，调整时间 .....），其中，
y，t表示系统节约相应的函数值与其对应时间,函数返回的是阶跃响应的第一(正向)波峰值b1、 阶跃响应的第二(正向)波峰值b2,阶跃响应的超调量sigma,阶跃响应的衰减比n,阶跃响应的衰减率pusi
阶跃响应的衰减震荡周期T,阶跃响应的振荡频率f.-Demand system units for a given step response performance (overshoot, peak time, adjust the time .....), which, y, t that the system saves the corresponding function value and its corresponding time, the function returns the order Jump to respond to the first (positive) wave peak b1, step response of the second (positive) wave peak b2, step response overshoot sigma, step response of the attenuation ratio of n, the step response of the attenuation rate pusi step response of the decay vibration cycle T, the step response of the oscillation frequency f. Platform: |
Size: 1024 |
Author:hua gong |
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Description: An implementation of Unscented Kalman Filter for nonlinear state estimation.-Nonlinear state estimation is a challenge problem. The well-known Kalman Filter is only suitable for linear systems. The Extended Kalman Filter (EKF) has become a standarded formulation for nonlinear state estimation. However, it may cause significant error for highly nonlinear systems because of the propagation of uncertainty through the nonlinear system.
The Unscented Kalman Filter (UKF) is a novel development in the field. The idea is to produce several sampling points (Sigma points) around the current state estimate based on its covariance. Then, propagating these points through the nonlinear map to get more accurate estimation of the mean and covariance of the mapping results. In this way, it avoids the need to calculate the Jacobian, hence incurs only the similar computation load as the EKF.
For tutorial purpose, this code implements a simplified version of UKF formulation, where we assume both the process and measurement noises are additive to avoid augment of state and a Platform: |
Size: 2048 |
Author:DT丿灬雪狼 |
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Description: 采用MATLAB软件运用本方法，对IEEE14节点配电系统进行了状态估计。给出了其节点负荷数据和支路信息，经状态估计后最终得到了与传统最小二乘法状态估计的相应的电压幅值对比结果和相角对比结果-Using MATLAB software using this method, the IEEE14 node distribution system state estimation. Gives its branch nodes and load data information via the state after the final estimate obtained with the conventional method of least squares estimation of the state of the respective comparison results of the voltage amplitude and phase comparison results Platform: |
Size: 6144 |
Author: |
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