Current Volume 4
Deregulation of electricity industry throughout the world is aimed at creating a competitive market to trade electricity and Nigeria had just taken a queue. This generates a host of new technical challenges to market participants and power system researchers especially in the generation and distribution value chain. The transmission corridor remains the same for evacuation of electrical energy. Every player in the industry wants to maximize profit, as such the number of transaction increases. This may lead to congestion in transmission network when generation companies compete to sell electricity to the distributors or wholesale purchasers. To avoid congestion every operator should know the value of available transfer capability (ATC) remaining in the physical transmission network before every transaction. Determination of available transfer capability (ATC) is a complex task which has to be done at periodic intervals for each source and sink pairs. This requires real – time pre-determination of an index termed available transfer capability, between every possible pair of source (selling or injection point) and sinks (purchase or extraction point) buses. This becomes very important especially now that there is paucity of fund due to the present economic recession the country is facing as well as environmental concern which may not favor expansion of the grid. ATC between a given pair of source and sink buses is quantified by the allowable highest magnitude of active power (mw) that than be transferred from the source to the sink over and above already committed uses (base case) without violating the network limits. Though many methods abound to determine ATC, the most accurate method is repeated power flow using Newton Raphson (RPFN-R). Therefore the RPFN-R approach was used in this research work on a 3-bus system. The same system was simulated using power world simulator and the difference between ATC obtained from both procedures was negligible justifying its accuracy. A 52-bus system was further modeled determining the available transfer capability between nodes and areas. The solutions obtained are quite encouraging and useful in the present restructuring environment.
ATC, RPFN-R, 52-bus
Engr. Edeh Uchenna Emmanuel , Prof. Innocent Ifeanyichukwu Eneh , Engr. Uzowulu Ifeanyi Nnanedu "DETERMINATION OF AVAILABLE TRANSFER CAPABILITY (ATC) OF THE 330kV NIGERIA GRID IN A DEREGULATED ELECTRICITY MARKET" Iconic Research And Engineering Journals Volume 4 Issue 2 2020 Page 21-28
Engr. Edeh Uchenna Emmanuel , Prof. Innocent Ifeanyichukwu Eneh , Engr. Uzowulu Ifeanyi Nnanedu "DETERMINATION OF AVAILABLE TRANSFER CAPABILITY (ATC) OF THE 330kV NIGERIA GRID IN A DEREGULATED ELECTRICITY MARKET" Iconic Research And Engineering Journals, 4(2)