A radial system is one power source system. In this system, separate feeders radiate from a single substation and feed the distributors at one end only. Radial power distribution is cheapest to build. The figure below displays a radial power distribution system. A feeder originates from substation and feeds the distributor at one end only.
Advantages of Radial System
- It is simplest distribution system
- The initial cost is lower
Disadvantages of Radial System
- Customers rely on single feeder and single distributor, any fault on feeder of distributor cuts off supply from consumers who are located on side of fault away from substation
- Distributor end closer to feeding point is heavily loaded
- Consumers located away from distribution have voltage fluctuations with load change
- System is not reliable
- In case of fault on feeder there will be complete blackout