# Power System Operation & Control Imp Qusts – PSOC Important Questions

## Power System Operation & Control Imp Qusts Pdf file – PSOC Important Questions

Please find the attached pdf file of Power System Operation & Control Important Questions Bank – PSOC Imp Qusts

Link – PSOC Question Bank

UNIT-I
Economic Operation of Power Systems-1

1. Define in detail the following:
i.Control variables
ii.Disturbance variables
iii.State variables.
2. Draw incremental fuel cost curve.
3. Explain the significance of equality and inequality constraints in the economic al- location of generation among different plants in a system.

UNIT-II
Economic Operation of Power Systems-2

1. Draw flow chart for economic scheduling without considering line losses.
2. Explain optimal load flow solution without inequality constraints.
3. Derive transmission loss formula in terms of B- coefficients.

UNIT-III
Hydrothermal Scheduling

1. Discuss the combined hydro- electric and steam station operation.
2. Describe different methods for solving hydro thermal scheduling.
3. What are the requirements of control strategy in integral control? Explain the role played by the controller’s gain setting in the frequency control.

UNIT-1V
Modeling of Turbines

1. Describe the mathematical model of Speed – Governing System.
2. Explain D.C excitation system and A.C excitation system.
3. Derive the model of a speed governing system and represent it by a block diagram.

UNIT-V
Single Area Load Frequency Control

1. Explain the necessity of keeping the frequency constant in a power system.
2. Explain what is meant by control area. Obtain the transfer function model and explain ALFC of a single area of an isolated power system.
3. Write notes on:
i)Control area concept.ii)Area control error.