Question

The bus-impedance equivalent circuit can be represented in the form of a “rake” with the diagonal elements, which are _____, and the non-diagonal (off-diagonal) elements, which are _____.

Short answer

The bus-impedance equivalent circuit can be represented in the form of a “rake” with the diagonal elements, which are Self-impedances and the non-diagonal (off-diagonal) elements, which aremutual impedances.

Step-by-step solution

Definition of bus-impedance equivalent circuit.

The transposition of the bus admittance matrix is called a bus-impedance equivalent matrix. It determines that the bus admittance or Y-matrix plays an important role in the complex calculations of the power system, so it is also called a sparse matrix.

Determine bus-impedance equivalent circuit.

The bus-impedance equivalent circuit is represented in matrix formation with all diagonal elements connected with all adjacent nodes and is called the driving point of impedance buses.

Consider a representation of diagonal elements as$Z_{11}$,$Z_{22}$, ….$Z_n$and these impedances are called the self impedances.

Consider the Off-diagonal elements represent$Z_n$, where $a\cancel{=}b$ for any bus impedance$ab$. Therefore they are known as mutual impedances.