On the Structure of System Matrix of the Multimachine Systems with Constant Impedance Loads and Calculating Algorithm

다수발전기계통의 계통행렬의 구조 및 계산알고리듬에 관한 연구

A systematic procedure for the elements of system matrix is suggested for the multimachine systems with constant impedance loads. Synchronous machines are represented by either a two-axis model or a classical model. The interrelationship of submatrices of system matrix has been investigated. Once elements of one submatrix are determined, they can be used to calculate the elements of the other submatrix. This algorithm is more effective as the number of generators modeled by a two-axis model increases. It is illustrated for 9-Bus multimachine system.