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Which distribution system is energized by two or more generating stations or substations?
Radial systems
Interconnected systems
Ring main systems
All of these
Interconnected systems
An interconnected distribution system is a configuration where the distribution network is fed by two or more independent generating stations or substations. This arrangement significantly improves supply reliability and voltage regulation compared to single-source radial or simple ring systems.
An interconnected distribution system is a configuration where the distribution network is fed by two or more independent generating stations or substations. This arrangement significantly improves supply reliability and voltage regulation compared to single-source radial or simple ring systems.
VdropтАЛ=тИСIтЛЕZ
Reliability=1тИТP(failure)
In an interconnected system, multiple feeders are linked to form a mesh or grid. If one generating station or a primary feeder experiences a fault or maintenance shutdown, the load is automatically shared or transferred through alternate paths from other connected sources, ensuring uninterrupted power delivery to consumers.
Used in large urban areas to ensure high continuity of supply.
Provides parallel paths, reducing the effect of localized faults.
Requires complex protective relaying schemes compared to radial systems.
Allows for economic load sharing between different substations.
Highest level of reliability and continuity of supply.
Improved voltage regulation due to multiple supply points.
High capital cost due to complex network architecture.
Complexity in protection coordination and fault location.
Large industrial complexes.
Metropolitan city power distribution grids.
| Feature | Radial System | Interconnected System |
|---|---|---|
Feeding Sources | Single Source | Multiple Sources |
Radial systems are the simplest and cheapest but have the lowest reliability.
Ring main systems act as a loop fed by a single substation, offering better reliability than radial but less than interconnected grids.
B is correct тАФ Interconnected systems utilize multiple power sources to provide redundant paths and ensure maximum reliability.
Always remember that 'Interconnected' implies 'Multiple Sources', while 'Ring' implies a 'Single Source' looped back to the same point.