a. Mention the two basic control channels of synchronous
generators
b. Which of the two has a much faster response?
c. Explain why are the two control loops are
non-interacting?
d. Write down four voltage control equipment used in power
system
a)Differences between asynchronous and synchronous generators?
Which one applies in the plants and why?
b)Where do gas and steam turbines apply, not to mention in power
plants?
c) What are the main components of the wind generator system or
solar-batteries-substation?
d) What is the difference between using the star or triangle
connection at the start of an engine?
e) In equipment tests, what is the difference between type, routine
and special tests?
f) Why are insulated cables not used in...
Generators R Us (GRU) is a leading manufacturer of partible
electric generators used for emergency power supply in both civil
and private disaster situations. Each year it produces 16,000 of
its model HI-360 units. This model used two bearings, which the
company purchases from an outside vendor. A review of accounting
and usage records reveals the following information:
labour for installing the bearings = $8 per generator;
• per-unit cost of bearings = $25;
• delivery charges per order =...
Several generators pollute the environment by emitting carbon
dioxide. Generators have different costs of reducing carbon
emissions. The government wants to put a cap on total emissions.
Putting a cap on each generator is more efficient compared to
issuing tradeable emissions permits to each generator. Is this true
or false? Explain your answer.
Several generators pollute the environment by emitting carbon
dioxide. Generators have different costs of reducing carbon
emissions. The government wants to put a cap on total emissions.
Putting a cap on each generator is more efficient compared to
issuing tradeable emissions permits to each generator. Is this true
or false?
Explain your answer elaborately.
Several generators pollute the environment by emitting carbon
dioxide. Generators have different costs of reducing carbon
emissions. The government wants to put a cap on total emissions.
Putting a cap on each generator is more efficient compared to
issuing tradeable emissions permits to each generator. Is this true
or false?
Diesel generators are common in off-grid power systems. Typical
diesel generators consist of a diesel prime mover coupled to the
shaft of a synchronous generator. Describe the role of an AVR in a
diesel generator system, its components and how it may be modelled
in a dynamic simulation.
A 45-MVA, 13.8 kV synchronous machine is operating as a
synchronous
condenser, as discussed in Appendix D (section D.4.1). It’s
short-circuit ratio
is 1.68 and the field current at rated voltage, no load is 490 A.
Assume the
generator to be connected directly to an 13.8 kV source
a. What is the saturated synchronous reactance of the generator
in per unit
and in ohms per phase?
The generator field current is adjusted to 260 A.
b. Draw a phasor diagram,...
USE MATLAB. PROVIDE MATLAB CODE FOR CALCULATIONS AND
GRAPHS!
A salient-pole synchronous generator with saturated synchronous
reactances Xd = 0.78 per unit and Xq = 0.63 per unit is connected
to a rated-voltage infinite bus through an external impedance Xbus
= 0.09 per unit.
a) Assuming the generator to be supplying 0.25
per unit rated real power, add a plot of the per-unit armature
current as a function of field excitation as the field current is
varied in the range...