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Matlab matrix operation-based admittance matrix calculation method for power flow calculation

A technology of power flow calculation and admittance matrix, which is applied in the field of admittance matrix calculation of power flow calculation, which can solve the problems such as the unrealized matrix operation of the correlation matrix and the slow calculation speed of the admittance matrix, so as to achieve the effect of convenient testing and analysis.

Inactive Publication Date: 2018-04-20
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

However, the correlation matrix used in the Chinese patent CN201710942153.1 method to calculate the admittance matrix has not realized the matrix operation, and the calculation speed of the admittance matrix is ​​relatively slow, and the calculation speed still needs to be further improved

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  • Matlab matrix operation-based admittance matrix calculation method for power flow calculation
  • Matlab matrix operation-based admittance matrix calculation method for power flow calculation
  • Matlab matrix operation-based admittance matrix calculation method for power flow calculation

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[0113] Below in conjunction with accompanying drawing, the present invention is further described, according to figure 1 with Image 6 The flow shown is calculated for a 10428-node actual system example, which has 10428 nodes and 10436 branches.

[0114] The method of the present invention and two existing patented methods are used to calculate the actual system example of 10428 nodes. The power flow calculation adopts the polar coordinate Newton method. The three power flow calculation methods are:

[0115] Method 1: Chinese patent CN201710557623.2 method, the admittance matrix calculation adopts cyclic structure and complex number operation;

[0116] Method 2: Chinese patent CN201710942153.1 method, the admittance matrix calculation adopts complex number operation and matrix operation, and the correlation matrix adopts a cyclic structure;

[0117] Method 3: The method of the present invention completely adopts matrix operation and complex number operation to calculate th...

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Abstract

The invention discloses a Matlab matrix operation-based admittance matrix calculation method for power flow calculation. An admittance matrix is calculated by completely adopting matrix operation. Themethod comprises the following steps of reading original data arrays of branches; forming head and tail node number arrays I0 and J0 of the directed branch; calculating a series branch admittance array YB of a branch pi-shaped equivalent circuit; forming a partial mutual admittance matrix; calculating self-admittance increment arrays of head and tail nodes of the directed branch; forming a self-admittance diagonal matrix Y0D; forming a node admittance matrix Y; and adding a reactive compensation admittance value to self admittance of the node admittance matrix Y. The method is realized in a Matlab platform, so that scientific and research personnel can conveniently perform testing and analysis on a calculation result by using various tools and functions provided by Matlab. The admittancematrix is calculated by completely adopting the matrix operation and complex operation, so that program codes are reduced, programming is simplified, and a program is clearer; and due to use of the matrix operation, the calculation speed is greatly increased.

Description

technical field [0001] The invention relates to an admittance matrix calculation method for power system power flow calculation, in particular to a Matlab-based admittance matrix calculation method for power flow calculation suitable for research purposes. Background technique [0002] Power system power flow calculation is a basic calculation for studying the steady-state operation of the power system. It determines the operating state of the entire network according to the given operating conditions and network structure. The power flow calculation is also the basis of other analysis of the power system, such as safety analysis, transient stability analysis, etc., all use power flow calculation. Power flow calculation is a basic analysis tool for power system analysis, and researchers often conduct further research on the basis of power flow calculation. Practical commercial software is written in high-level programming languages ​​such as C and uses advanced techniques s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/16
CPCG06F17/16G06Q10/0631G06Q50/06
Inventor 姚玉斌赵伟吴志良
Owner DALIAN MARITIME UNIVERSITY
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