This paper mainly investigates the characteristics of Jacobian matrix: △f=J△x, which is called Jacobian matrix. Jacobian matrix is sparse: but it is not symmetric. Because the node voltage is expressed in polar coordinates and rectangular coordinates, and Newton-Equation has two forms, there are two errors. Option c in the specific method of power flow calculation. Jacobian matrix is nonsingular matrix.
Forever awe
Awe is a kind of respect attitude towards things in the world. It regulates and guides one's behavior with the lowest moral bottom line, which makes one's min