Calculation Method of Coefficient Matrix of Fast Decomposition Method Based on Matlab Matrix Operation

Abstract

The present invention discloses an Matlab matrix operation based fast decoupled method coefficient matrix calculation method. The method completely employs matrix operation to calculate a correction equation coefficient matrix B'. The method comprises the following steps of: reading a first node number array I, an end node number array J and a reactance array X of a branch; calculating a branch electrical susceptance array BB by employing the branch reactance; forming a matrix B1 formed by off-diagonal elements of part of the coefficient matrix B'; forming an off-diagonal matrix of the coefficient matrix B'; forming an n-dimensional column vector BD formed by diagonal elements of the coefficient matrix B'; generating a diagonal matrix of the coefficient matrix B'; and calculating the coefficient matrix B'. The Matlab matrix operation based fast decoupled method coefficient matrix calculation method is implemented at a Matlab platform to allow scientific research personnel to conveniently use various tools and functions provided by the Matlab to perform test and analysis of a calculation result. The method provided by the invention reduces the program codes, simplifies programming,allows the program to be clearer, and completely employs matrix operation to calculate the correction equation coefficient matrix B' to greatly improve the calculation speed.

Description

technical field [0001] The invention relates to a method for calculating a correction equation coefficient matrix for power system fast decomposition method power flow calculation, in particular to a Matlab-based fast decomposition method power flow calculation method for correction equation coefficient matrix calculation method 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. Due to the advantages of reliable convergence, fast calculation speed, and less memory requirements, the fast decomposition method has become one of the mainstream methods for ...

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Problems solved by technology

For this reason, the Chinese patent CN201710942196.X proposes a method of calculating the coefficient matrix B' of the correction equation by using the correlation matrix and matrix operations, which improves the calculation speed of the power flow calculation, but the correlation matrix used to calculate the coefficient matrix B' still adopts a cyclic structure. Computing speed still needs to be further improved

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