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What is the main type of distribution system in India?
Radial
Parallel
Network
Both (b) and (c)
Radial
In India, the radial distribution system is the most widely adopted configuration for primary and secondary distribution networks. This system is characterized by a single path of power flow from the substation to the consumer, making it the most cost-effective solution for low-density or standard residential areas.
In India, the radial distribution system is the most widely adopted configuration for primary and secondary distribution networks. This system is characterized by a single path of power flow from the substation to the consumer, making it the most cost-effective solution for low-density or standard residential areas.
VdropтАЛ=IтЛЕ(RтЛЕcos╧Х+XтЛЕsin╧Х) тАФ representing the voltage drop in a radial feeder where R is resistance and X is reactance.
The radial system operates by feeding power from a single source (distribution substation) through a main feeder, which then branches out into sub-feeders and distributors. Since the circuit branches outward like the spokes of a wheel, it is termed 'radial'. Power flows only in one direction, and the voltage drop at the load end is directly proportional to the distance from the source.
Most economical distribution system due to minimal conductor usage.
Simple design and easy fault location compared to mesh or network systems.
Reliability is low because a single feeder fault interrupts supply to all downstream loads.
Widely used in rural and suburban areas in India.
Lower initial capital expenditure.
Simple protection and relaying requirements.
Easy to design and implement.
Poor reliability as there is no backup supply for consumers.
Voltage fluctuations increase as the load distance from the source increases.
The end of the line receives the lowest voltage.
Rural and suburban electrification.
Low-voltage domestic distribution lines.
Areas where load density is not excessively high.
In highly dense urban areas, India occasionally employs ring main or interconnected networks to improve reliability.
Option B (Parallel) refers to redundant feeder paths, while Option C (Network) refers to a meshed grid structure.
A is correct тАФ Radial distribution is the standard, cost-effective topology used for most power distribution in India.
When asked about distribution systems, always link 'Radial' to 'Cost' and 'Network/Ring' to 'Reliability'.