Description: 电力系统潮流程序，用matlab编程的的。潮流计算是电力系统运行分析和规划设计中最常用的工具，电力系统潮流计算问题在数学上是求解一组多元非线性方程，迭代的收敛性是实用者关心的技术焦点。-Power Flow procedures, with the matlab programming. Flow calculation is the electric power system operation analysis and planning and designing the most commonly used tools, electric power system power flow calculation problem solving in mathematics is a set of multiple non-linear equations, iterative convergence is a practical technology were the focus of concern. Platform: |
Size: 3072 |
Author:陈雨 |
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Description: Article_herra Distorted voltage and current waveforms is one of
the problems associated to electric power quality. Continuous
use of non-linear loads provokes the existence of voltage
waveforms with a high distortion. Thus, it is necessary to know
the responsible of this problem by means of the commonly
named distortion sources identification. In this paper, the
problem is analyzed through the harmonic power sign, with the
objective of knowing the sense of harmonic power flow
between source and one load in distorted systems. Nowadays, it
has already been established in the Literature that an analysis of
this kind does not solve the problem. Recently, new indices
have been introduced to evaluate a specific consumer distortion
level. In this paper, a comparative analysis of these indices is
carried out, having as reference a practical case. The results
obtained show that, in fact, these indices can help to valuate the
harmonic distortion, although none of them solve the question
definitively Platform: |
Size: 68608 |
Author:imedp |
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Description: Power flow studies, commonly known as load flow, form an important part of power system
analysis. They are necessary for planning, economic scheduling and control of an existing system as
well as planning its future expansion. The problem consists of determining the magnitudes and phase
angle of voltages at each bus and active and reactive power flow in each line.
In solving power flow problem, the system is assumed to be operating under balanced
conditions and a single-phase model is used. Four quantities are assumed at each bus. These are voltage magnitude v, phase angle , real power P, and reactive power Q.The Newton Raphson method of load flow analysis is an iterative method which approximates the set of non-linear simultaneous equations to a set of linear simultaneous equations using Taylor’s series expansion and the terms are limited to first order approximation. Platform: |
Size: 32768 |
Author:bindiya kokila |
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Description: Power flow in a low voltage direct current grid (LVDC) is a non-linear problem just as its counterpart ac. This script
studies convergence and uniqueness of the solution Platform: |
Size: 2048 |
Author:md adil |
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Description: 电力系统潮流计算体现在数学就上是多元非线性方程组的求解问题，求解的方法有很多种。牛顿—拉夫逊法是数学上解非线性方程式的有效方法，收敛性好、迭代次数少。将牛顿—拉夫逊法用于潮流计算是以导纳矩阵为基础的，由于利用了导纳矩阵的对称性、稀疏性及节点编号顺序优化等技巧，使牛顿—拉夫逊法解题规模和计算速度进一步提高，此算法至今仍是潮流计算中广泛采用的优秀算法。(Power flow calculation in power system is a problem of solving multivariate non-linear equations in mathematics. There are many methods to solve it. Newton-Raphson method is an effective method for solving nonlinear equations in mathematics. It has good convergence and fewer iterations. The application of Newton-Raphson method to power flow calculation is based on admittance matrix. Because of the use of symmetry, sparsity and optimization of node number sequence of admittance matrix, the scale and speed of Newton-Raphson method are further improved. So far, this algorithm is still an excellent one widely used in power flow calculation.) Platform: |
Size: 2048 |
Author:WHYW |
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Search - non linear power flow