Network topology analyzing method for electrical power system

Abstract

The invention discloses a network topology analysis method for a power system. The method carries out the network topology analysis by solving an equation AX=B which takes an adjacency matrix A as a coefficient matrix; subsequently, element elimination is carried out to the adjacency matrix A; according to the element elimination result, the right vector B is evaluated and the solution X of the equation is obtained by back substitution. When the bus analysis is carried out, the value of element x of a solution vector X is the bus number of the node i; and when the electrical island analysis is carried out, the value of the element x of the solution vector X is the electrical island number of the bus i. The method has small calculation amount as the coefficient matrix A is Boolean quantity, the right vector B is natural number and the back substitution process only contains simple logic judgment and evaluation. The method has the advantages of clear concept of the existing matrix method and simple programming, quicker running speed than the existing matrix method, less calculation amount than the matrix method which solves the full turnon matrix with the square of the matrix by 1 / (3n), and less memory space occupied in the computer.

Description

technical field [0001] The invention relates to a network topology analysis method of a power system, in particular to a network topology analysis method of a power system based on a matrix method. Background technique [0002] The network topology analysis of the power system is a very important module in the energy management system and distribution management system of the power company. Its function is to transform the physical model of the power system into the mathematical model required for network analysis. The physical model of the power system describes the connection relationship of all primary equipment in the power system through nodes, including generators, loads, lines, transformers, capacitors, reactors, circuit breakers, disconnectors, etc. 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 t...

AI Technical Summary

Problems solved by technology

The search method is to analyze the topology of the network by searching the connection relationship between nodes and adjacent nodes. The principle of the search method is simple and easy to understand, but the programming is cumbersome; The correlation matrix of the road relationship is a method of performing topology analysis through matrix operations. The programming of the matrix method is relatively simple, but the memory requirement and the amount of calculation are large.

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