Warning: Matrix is singular to working precision. i got this warning when i try to find the invers for the following matrix

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Ybus=[-80i 0 0 0 0
0 -71.429i 0 0 0
0 0 -9.524i 2.857i 6.667i
0 0 2.857i -16.187i 13.33i
0 0 6.667i 13.33i -19.997i]
Zbus=inv(Ybus)

Respuestas (1)

Walter Roberson
Walter Roberson el 25 de Mzo. de 2018
Ybus(3,:) + Ybus(4,:) equals Ybus(5,:) so rank(Ybus) is only 4 not 5. The equation is singular and has no inverse.

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