Question

A power system consists of 300 buses out of which 20 buses are generator bus, 25 buses are ones with reactive power support and 15 buses are the ones with fixed shunt capacitors. All the other buses are load buses.It is proposed to perform a load flow analysis in the system using Newton- Raphson method. The size of the Newton Raphson Jacobian matrix is

• A. $553\times 553$
• B. $540\times 540$
• C. $555\times 555$
  
• D. $554\times 554$

Answer 1

The correct option is D $554\times 554$

Total buses=300
Size of jacobian matrix
=No.of unknown bus voltage
=$2\times 300-2-19-25$
=$554$