Investigation and optimization of voltage deterioration in Khartoum ring

Abstract

The objective of this thesis is to investigate and study problems and voltage congestion facing the engineers involved into the operation of a network of the National Authority for electricity in Khartoum region. The thesis looked into the effects that advanced control techniques have on electric compensation of power generation and transmission system. The thesis explained first the power system components of National Electricity Corporation such as the generation quantity and types, substation, transmission line and voltage control procedures which are used. It then proceeded to give a brief introduction to the location of Khartoum ring and purpose of its establishment. A load flow studies is made for the network of the National electricity corporation by using actual value of networks (busbars voltage, loads at peak load, line parameter, capacitors and reactors rates and types, rates of generation and its MVAr limitations). A load flow program (HADI SADAT load flow program) is applied for improving of voltage deterioration in Khartoum ring in two cases, first one is operating the costly units in minimum load and the second case is totally shutdown of costly units. Some results are obtained appear that problem which is expected, and some solutions are discussed for this problem. The thesis studied the dependence on Marawi dam for generating electricity and possibility of shutting down the costly unit (thermal power station in KHN and GARI complex), the contribution of costly unit in reactive power compensation in Khartoum region and possibility of constructing compensation units for reactive power management.