Why is the load on a power system variable?

The consumers require their small or large block of power in accordance with the demands of their activities. Thus the load demand of one consumer at any time may be different from that of the other consumer. The result is that load on the power station varies from time to time.

What is load variation?

The daily load variation is modeled by multiplication of two parameters. The first one is the base load ( P i , b a s e D , Q i , b a s e D ). Each hour of a day is defined as a demand level. Therefore, there will be 24 hours or demand levels which will be shown by .

What causes frequency variation in power system?

A frequency variation occurs if a generator becomes un-synchronous with the power system, causing an inconsistency that is manifested in the form of a variation. The specified frequency variation should be within the limits +- 2.5\% Hz at all times for grid network.

Why the system load variations occur write the effect of variable load?

Also, a higher value of load factor reduces the variable loading problems. This is because, a higher value of load factor implies less variation in demands at various times. Due to this, the effects of variable loading are minimised. Hence Load factor should be as high as possible.

Why is the load on a power station variable What are the effects of variable load on the operation of the power station?

The Variable Load on Power Station on the plant increases the cost of the production of electrical energy. An alternator operates at maximum efficiency near its rated capacity. If a single alternator is used, it will have poor efficiency during periods of light loads on the plant.

What is load variable?

A variable load is a load that is applied over an area; that is, a surface. A variable load can be applied in any direction specified by a vector or can be applied normal to the surface. A function can be defined to control the magnitude of the load at different locations on the surface.

Why is the load on a power system variable What are the effects of variable load on the operation of the power system?

The load on a power station varies from time to time due to uncertain demands of the consumers and is known as the variable load on the station. Thus the load demand of one consumer at any time may be different from that of the other consumer. The result is that load on the power station varies from time to time.

Why do Generators fluctuate?

Various problems or damage that may occur on the generator, such as: The generator has no output voltage and the voltage generated by the generator is fluctuating or unstable. If the generator give Unstable Voltage (Over or Under Voltage), it can cause damage to electrical equipment or Electrical Appliances at home.

What are the effect of variable load?

The variable load on the plant increases the cost of the production of electrical energy. An alternator operates at maximum efficiency near its rated capacity. If a single alternator is used, it will have poor efficiency during periods of light loads on the plant.

What is load variable in process control?

9AEI 406.5 to 6 53 Load variable • Load variables are those variables that cause disturbances in the process. • They are also called as load disturbance. • The load variable may change either.