TRANSMISSION SYSTEM REQUIREMENTS

Transmission System Requirements

Listed below are the typical points to be considered before starting or even operating an Electrical Power System. These factors can be best categorized into three main points; Electrical Design, Mechanical Design & Structural Design.

Electrical Design of AC system involves;

power flow requirements
system stability and dynamic performance
selection of voltage level
voltage and reactive power flow control
conductor selection
losses
corona-related performance(radio, audible, and television noise)
electromagnetic field effects
insulation and over voltage design
switching arrangements
circuit-breaker duties
protective relaying

Mechanical Design includes

Sag and tension calculations
conductor composition
conductor spacing (minimum spacing to be determined under electrical design)
types of insulators
selection of conductor hardware

Structural Design

selection of the type of structures to be used
mechanical loading calculations
foundations
guys and anchors.

Miscellaneous features

line location
acquisition of right-of-way
profiling
locating structures
inductive coordination (considers line location and electrical calculations)
means of communication
seismic factors

REFERENCE : Standard Handbook for Electrical Engineers by Donald G. Fink and H.Wayne Beaty

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