ISRO Electrical Engineering (EE) 2018 - Question 49

All ISRO Electrical Engineering (EE) papers | ISRO Electrical Engineering (EE) 2018

What is the size of a Jacobian matrix for a 100 bus power system with 29 nos. of voltage controlled buses?

  • A. 29 × 29
  • B. 170 × 170
  • C. 169 × 169
  • D. 30 × 30

Answer: C. 169 × 169

Explanation: For 100 buses with 1 slack and 29 PV buses, number of PQ buses = 100 − 1 − 29 = 70. Jacobian dimension = (2N − 2 − N_pv) = (200 − 2 − 29) = 169 × 169.

| | All questions of ISRO Electrical Engineering (EE) 2018