Abstract

This graduation project is designed for the high-voltage , low-voltage system protective

relay system of transformer substation for the building of Sudan GNPOC oil headquarters, In the

whole design, the design materials that I offered according to country's relevant design

specification and standard and relevant specialities, design the transformer substation. The main

content designed includes high-pressure distribution system , low-voltage distribution system ,

distribution room system, protective relay system, namely confirm the quantity , capacity , type

of the voltage transformer and assign according to relevant design standards; Confirm the main

wiring way, confirm the quantity , type of the high , low-voltage cupboard and assign; Confirm

that controls and protects the type , specification of the electric apparatus, carry on checking

computations; Confirm the type , specification of cable , bus bar and other main lines, carry on

checking computations; Confirm distribution equipment of such equipment as lighting , power ,

Confirm the components of relay protection devices and design secondary wiring program,etc.

Keywords: high-pressure distribution system low-voltage distribution system protective relay system,