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QUESTION: 1

If for a plant i with output P_{1 }and loss in the system being P_{L} increases, the penalty factor of the system

Solution:

Penalty factor of the system is

QUESTION: 2

The incremental fuel costs of two plants are given by

For economic schedule of a load of 180 MW

Solution:

For economic scheduling of plants, we have:

QUESTION: 3

A generator is supplying a load. An incremental change in load of 4 MW requires generation to be increased by 6 MW. The cost at plant bus is ₹ 30/MWhr. The incremental cost at the receiving end is

Solution:

QUESTION: 4

The current distribution factors for the power system network shown below are given by

Solution:

Since the load is at plant 2 therefore,

Na_{2} = 0 and Na_{1} = 1

QUESTION: 5

The incremental transmission loss of a plant can’t be a

Solution:

The incremental transmission loss of a plant can be positive, a non-zero value but, can’t be zero.

QUESTION: 6

When generating units are loaded to equal incremental costs, it results in

Solution:

To minimize the total fuel cost, the generating units must operate at equal incremental cost of production.

QUESTION: 7

Unit of heat rate curve is

Solution:

QUESTION: 8

Unit of λ is

Solution:

QUESTION: 9

Cost curves are expressed as:

Solution:

QUESTION: 10

The optimization problem is

Solution:

### Optimal Power Flow

Doc | 2 Pages

### AC Power Supply System, Power Systems, Electrical Engineering, GATE

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