BUS ADMITTANCE MATRIX - PART - 01
FORMATION OF Y-BUS - ADVANTAGES
I-bus = Y-bus x V-bus ----- 01
I-bus is the vector of the injected bus current (i.e. external current sources)
Y-bus is the bus admittance matrix
The diagonal element of each node is the sum of the admittances connected to it. It is known a self-admittance matrix or driving point admittance.
The off-diagonal element is equal to the negative of the admittance between the nodes.
SPARSE MATRIX - The Y-bus is a sparse matrix. For a large power system, more than 90 % of off-diagonal elements are zero. This is due to the fact that in power system network networks each node (bus) is connected to not more than three nodes.
The voltages are measured with respect to ground. The equation 01 is called nodal current equation.
It is a vector equation consisting of n scalar equations.
Негізгі бет BUS ADMITTANCE MATRIX - PART - 01 - FORMATION OF Y-BUS - ADVANTAGES
Пікірлер: 43