Network topology analysis method of power system based on quasi-square of adjacency matrix

Abstract

The invention provides a network topology analysis method of a power system based on the quasi-square of an adjacency matrix, which has the characteristic that the programming by using a matrix method is relatively simple, and can save computer memory and calculating time. The invention is characterized in that a step of generating connection matrix modules and a step of analyzing connection matrixes by using an inverted-sequence row scanning method are the main characteristics of the invention; in the invention, connection matrixes for analyzing the network topology can be obtained only by one matrix multiplication, which improves the speed of matrix analysis, and the calculated amount is less than that in the existing matrix method, the more the vertices, the more obvious the efficiency; nodes are performed with optimized numbering in descending order of the numbers of closed switches connected with the nodes, and buses are performed with optimized numbering in descending order of the numbers of sub-circuits connected with the buses, thereby reducing the quantity of matrix multiplication. In the invention, the value of the connection matrix is kept directly by the adjacency matrix without a special intermediate matrix, which can save half of memory space on a computer, and also reduce the assignment operation of matrix.

Description

technical field [0001] The invention relates to a network topology analysis method of a power system, in particular to a power system network topology analysis method based on a matrix method. Background technique [0002] Power system network topology analysis is a very important module in the power automation system. Its function is to convert the physical model of the power system into the mathematical model required for network analysis. In order to analyze the power system, it is necessary to form a circuit model reflecting the relationship between the busbar and the branch through network topology analysis. [0003] Network topology analysis includes two parts: busbar analysis and electrical island analysis. Busbar analysis is to gather nodes connected together through closed switches to form a busbar, and electrical island analysis is to gather busbars connected together through branches to form an electrical island. Although the analysis objects of these two parts a...

AI Technical Summary

Problems solved by technology

In the patent application with the application number of 201010235958.0, the applicant disclosed a matrix method network topology method that can obtain a fully connected matrix by only two matrix multiplication operations. The analysis speed has been greatly improved, but there is still room for further improvement

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