Lecture 2b.
Distribution System
,Structure of Power System
• Generation: 1kV-30 kV
• EHV Transmission: 500kV-1000kV
• HV Transmission: 230kV-345kV
• Subtransmission system: 69kV-169kV
• Distribution system: 120V-35kV
,Distribution system
The distribution system may be divided into three distinct subsystem
• Distribution substation
• Primary distribution system
• Secondary distribution system
, Radial System
Typical radial distribution system