DIPLOMA IN ELECTRICAL AND ELECTRONIC ENGINEERING(POWER OPTION)
MODULE III
ELECTRICAL POWER SYSTEMS
INSTRUCTIONS
You should have the following for this examination
Mathematical table
Non – programmable scientific calculator
Drawing instruments
This paper consists of 5 questions
Answer any THREE questions
All questions carry equal marks
Answer all questions in English
1a) State the methods of reducing the system transfer reactance for improvement of steady state
stability (3mks)
b) Derive the swing equation of a synchronous generator (6mks)
c) The ABCD constants of a nominal П network representing a three phase transmission line are:
A = D = 0.940.8 , B = 6672 , C = 0.00291siemens.
Given that both sending and receiving end voltages are kept constant at 132KV, determine the steady
state stability limit with:
i) The ABCD constants as indicated;
ii) Both series resistance and shunt admittance neglected (11mks)
