power systems/ PSCAD/EMTDC/MATLAB/POWER LAB

ECE 43200/53201 Power Systems Fall 2020

1

Design Project1: Power Flow Problem

You are asked to contact your instructor to determine all the transmission line data needed

for the project completion.

Transmission Lines System Data

Consider the length of transmission lines as follows:

L23=_______km long, L24= L23 km long, L35=_______km long, L47 = L35 km long, L56 =_______km long,

and L67= L56 km long.

Fig.1 shows a sample of a transmission line, having flat towers and conductors of ACSR type in each

phase, an two ground conductors.

Fig. 1 Sample of a transmission system tower and conductor’s configuration

Tower data:

Tower type: __________________

Height of all conductors: _______[m]

Horizontal spacing between phases: _______[m]

Shunt conductance: 0 [S/m]

The lines of the transmission system are transposed.

Conductor Data: Ground Wires Data: Conductor name: ______________; Ground wires name: 7/16"Utility Grade Steel; Ground wire radius: 0.01106 [m];

Conductor radius: _______[m]; Ground wire DC resistance: 2.865 [Ω /km]; Assume sag of all ground wires: 4.5 [m];

Cond. DC resistance: ________[Ω/km]; Spacing between ground wires: 10.12 [m]; Height of ground wires above conductors: 9.63 [m].

Assume sag of all conductors: 10 [m];

Bundle: ______conductor(s)/phase.