Steady State Stability

As an introduction, we need to know about power state stability. It is really the capability of the system to return to its steady state condition after subjected to certain disturbances. We can now consider a synchronous generator to understand the power system stability. The generator is in synchronism with the other system connected to … Read more

Transmission Line in Power System

What is Transmission Line? Transmission line is the long conductor with special design (bundled) to carry bulk amount of generated power at very high voltage from one station to another as per variation of the voltage level. Type of Transmission Line In transmission line determination of voltage drop, transmission efficiency, line loss etc. are important … Read more

Medium Transmission Line

The transmission line having its effective length more than 80 km but less than 250 km is generally referred to as a medium transmission line. Due to the line length being considerably high, admittance Y of the network does play a role in calculating the effective circuit parameters, unlike in the case of short transmission … Read more

Long Transmission Line

A power transmission line with its effective length of around 250 Kms or above is referred to as a long transmission line. The line constants are uniformly distributed over the entire length of line. Calculations related to circuit parameters (ABCD parameters) of such a power transmission is not that simple, as was the case for … Read more

What is Power Factor: Improvement, Formula & Definition

In general power is the capacity to do work. In electrical domain, electrical power is the amount of electrical energy that can be transferred to some other form (heat, light etc) per unit time. Mathematically it is the product of voltage drop across the element and current flowing through it. Considering first the DC circuits, … Read more

Short Transmission Line

The transmission lines which have length less than 50 km are generally referred as short transmission lines. For short length, the shunt capacitance of this type of line is neglected and other parameters like electrical resistance and inductor of these short lines are lumped, hence the equivalent circuit is represented as given below. Let’s draw … Read more

Ferranti Effect in Power System

In general practice we know, that for all electrical systems current flows from the region of higher potential to the region of lower potential, to compensate for the electrical potential difference that exists in the system. In all practical cases, the sending end voltage is higher than the receiving end due to line losses, so … Read more

Transient Stability in Power System

The ability of a synchronous power system to return to stable condition and maintain its synchronism following a relatively large disturbance arising from very general situations like switching ON and OFF of circuit elements, or clearing of faults, etc. is referred to as the transient stability in power system. More often than not, the power … Read more

Electrical Power Transmission System and Network

Electrical Power Transmission System Various generating stations generate electrical power. These generating stations are not necessarily situated at the load center. During construction of generating station number of factors are to be considered from the economic point of view. These all factors may not be easily available at load center; hence generating stations are not … Read more

Power System Stability

Power system engineering forms a vast and major portion of electrical engineering studies. It is mainly concerned with the production of electrical power and its transmission from the sending end to receiving end as per requirements, incurring a minimum amount of losses. The power often changes due to the variation of load or due to … Read more