Method for gaining node impedance matrix of power system based on LR triangular decomposition of symmetric sparse matrix technology

Method for gaining node impedance matrix of power system based on LR triangular decomposition of symmetric sparse matrix technology

  • CN 104,408,026 A
  • Filed: 11/27/2014
  • Published: 03/11/2015
  • Est. Priority Date: 11/27/2014
  • Status: Active Application
First Claim
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1. ask for a method for electric system nodal impedance matrix based on the LR triangle decomposition of symmetrical and sparse technology, its feature comprises the following steps:

  • Step 1;

    read in each circuit branch data of n node system;

    Step 2;

    form bus admittance matrix Y;

    Step 3;

    carry out A=LR triangle decomposition according to Y array element element and the openness and symmetrical structure in triangle decomposition process thereof;

    Step 4;

    according to LRZ k=E kz is asked in back substitution kbattle array diagonal element Z kkand above off-diagonal element;

    Step 5;

    ask for diagonal element Z according to symmetry kkwith the off-diagonal element on a left side;

    Step 6;

    by Z battle array write data file.

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