Transmission and distribution 5 min read
INSULATOR
Electrical Insulator must be used in electrical system to prevent unwanted flow of current to the earth from its supporting…
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Transmission and distribution 17 min read
LOCATION OF VOLTAGE CONTROL EQUIPMENT
In a modern power system, there are several elements between the generating station and the consumers. The voltage control equipment…
Transmission and distribution 19 min read
VOLTAGE CONTROL
In a modern power system, electrical energy from the generating station is delivered to the ultimate consumers through a network…
Transmission and distribution 3 min read
LONG TRANSMISSION LINES
It is well known that line constants of the transmission line are uniformly distributed over the entire length of the…
Transmission and distribution 3 min read
MEDIUM TRANSMISSION LINES
In short transmission line calculations, the effects of the line capacitance are neglected because such lines have smaller lengths and…
Transmission and distribution 3 min read
PERFORMANCE OF SINGLE PHASE SHORT TRANSMISSION LINES
As stated earlier, the effects of line capacitance are neglected for a short transmission line. Therefore, while studying the performance…
Transmission and distribution 4 min read
CLASSIFICATION OF LINES
The important considerations in the design and operation of a transmission line are thedetermination of voltage drop, line losses and…
Transmission and distribution 6 min read
CORONA
When an alternating potential difference is applied across two conductors whose spacing is large as compared to their diameters, there…
Transmission and distribution 5 min read
CONDUCTORS
Commonly used conductor materials: The most commonly used conductor materials for over head lines are copper, aluminium, steel cored aluminium,…
Transmission and distribution 3 min read
INDUCTIVE INTERFERENCE WITH NEIGHBOURING COMMUNICATION CIRCUITS
It is usual practice to run telephone lines along the same route as the power lines. The transmission lines transmit…
Transmission and distribution 2 min read
CAPACITANCE OF A SINGLE PHASE TWO-WIRE LINE
Consider a single phase overhead transmission line consisting of two parallel conductors A and B spaced d metres apart in…
Transmission and distribution 3 min read
CONCEPT OF SELF-GMD AND MUTUAL-GMD
The use of self geometrical mean distance (abbreviated as self-GMD) and mutual geometrical mean distance (mutual-GMD) simplifies the inductance calculations,…