In restructured Power systems, the bidding strength for Generation Companies increases and there will be rise in generation. The Transmission is the middle man between generation and distribution which is expected to be robust enough to evacuate these increase in generation. The duty of the transmission network increases in a deregulated power system environment as a result of the different market players trying to maximize profit and increasing pressure on the existing transmission network. The resultant of these pressures is the congestion of the transmission network. Transmission congestion management will alleviate such congestion problems in the network. In this work, Generator Rescheduling was used to manage the congestion problem seen in the Nigerian transmission network. Load flow analysis carried out on the active 41-bus Nigerian Power system shows that there are congestions in 10 transmission lines affecting the major lines connecting the South East of the country and the Lagos environs. There were violations in operating voltages of 16 buses. When the active power of the generators were rescheduled, the result shows that the operating voltages of theses buses; Mando, Akangba, Lokoja, Aiyede, Ikeja-West were restored to the acceptable range while 6 of the 10 violated lines were relieved. Generator rescheduling could not solve all the problems of Transmission line Congestion because load centres were not considered before citing of generating stations.
Generator rescheduling, congestion, transmission, operating voltage, generation
Ndubisi M. A , Ezechukwu O. A , Okozi S. O "Transmission Congestion Management Of The Restructured Nigerian Power System Using Generator Rescheduling" Iconic Research And Engineering Journals Volume 3 Issue 5 2019 Page 18-24
Ndubisi M. A , Ezechukwu O. A , Okozi S. O "Transmission Congestion Management Of The Restructured Nigerian Power System Using Generator Rescheduling" Iconic Research And Engineering Journals, 3(5)