Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30067
Available Transmission Transfer Efficiency (ATTE) as an Index Measurement for Power Transmission Grid Performance

Authors: Ahmad Abubakar Sadiq, Mark N. Nwohu, Jacob Tsado, Ahmad A. Ashraf, Agbachi E. Okenna, Enesi E. Yahaya, Ambafi James Garba


Transmission system performance analysis is vital to proper planning and operations of power systems in the presence of deregulation. Key performance indicators (KPIs) are often used as measure of degree of performance. This paper gives a novel method to determine the transmission efficiency by evaluating the ratio of real power losses incurred from a specified transfer direction. Available Transmission Transfer Efficiency (ATTE) expresses the percentage of real power received resulting from inter-area available power transfer. The Tie line (Rated system path) performance is seen to differ from system wide (Network response) performance and ATTE values obtained are transfer direction specific. The required sending end quantities with specified receiving end ATC and the receiving end power circle diagram are obtained for the tie line analysis. The amount of real power loss load relative to the available transfer capability gives a measure of the transmission grid efficiency.

Keywords: Available transfer capability, efficiency performance, real power, transmission system.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF


[1] Marannino, P., Bresesti, P., Garavaglia, A., Zanellini, F., &Vailati, R. (2002). Assessing the Transmission Transfer Capability Sensitivity to Power System Parameters. 14th PSCC, (pp. 1-7). Sevilla.
[2] NERC. (1996). Available Transfer Capability Definitions and Determination. NewYork: North American Electric Reliability Council.
[3] Omar, H. A., Masoud, A.-T., Mohammed, A.-w., Khalfan, A.-Q., Saqar, A.-F., Ibrahim, A.-B., et al. (2009). Key Performance Indicatorsof a Transmission System. Sultanate of Oman: Oman Electricity Transmission Company.
[4] Arthit, S.-Y. (2009). System and Network Performance Indicators for the Electricity Generating Authority of Thailand:Current and Future ones. Journal of Practical Electrical Engineering, 1 (1), 8-20.
[5] Abu Dhabi Transmission and Dispatch Company TRANSCO. (2011). Electricity Networks Annual Technical Report. Abu Dhabi.
[6] Labo, H. S. (2010). Investors Forum forthePrivatisationof PHCN Successor Companies. Abuja: Transmission Company of Nigeria.
[7] Onahaebe, O., &Apeh, S. (2007). Voltage Instability in Electrical Network: A case study of Nigerian 330kV Transmission Grid. Research Journal of Applied Sciences 2 (8), 865 - 874.
[8] Sadiq, A., &Nwohu, M. (2013). Evaluation of Inter- Area Transfer Capability of Nigerian 330kV Network. International Journal Engineering and Technology Vol. 3 No. 2, 148-158.
[9] Hamoud, G. (2000). Feasibility Assessment of simultaneous bilateral transaction in a deregulated environment. IEEE Transaction on power system, 15 (1):22-6.
[10] Liu, C.-C., & Li, G. (2004). Available Transfer Capability Determination. Abuja: Third NSF Workshop on US-Africa Research and Education Collaboration.
[11] Yan, O., &Chanan, S. (2002). Assessment of Available Transfer Capability and Margins. IEEE Transaction on Power systems, vol. 17, no. 2, 463-468.
[12] Mark, H. G., & Chika, N. (1999). Available Transfer Capability and First order Sensitivity. IEEE Transaction on Power System, 512-518.
[13] Babulal, C., &Kannan, P. (2006). A Novel Approach for ATC Computation in Deregulated Environment. J. Electrical Systems 2-3, 146-161.
[14] Venkataramana, A., & Colin, C. (1992). The Continuation Power Flow: A Tool for Steady State Voltage Stability Analysis. IEEE Transactions Power System, 416-423.
[15] Ejebe, G., Tong, J., Waight, J., Frame, J., Wang, X., &Tinney, W. (1998). Available Transfer Capability Calculations. IEEE Transaction on Power Systems, Vol.13, No.4, 1521-1527.
[16] Hsiao-Dong, C., Alexander, J. F., Kirit, S. S., & Neal, B. (1995). CPFLOW: A Practical Tool for Tracing Power System Steady-State Stationary Behavior Due to Load and Generation Variations. IEEE Transaction on Power Systems, Vol.10, No. 2, 623-633.
[17] Liang, M., & Ali, A. (2006). Total Transfer Capability Computation for Multi - Area Power Systems. IEEE Transactions on Power Systems, vol. 21, no. 3, 1141-1147.
[18] Yuan-Kang, W. (2007). A novel algorithm for ATC calculations and applications in deregulated electricity markets. Electrical Power and Energy Systems, 810-821.
[19] Saadat, H. (1999). Power System Analysis. In H. Saadat, Line Model and Performance New Delhi: Tata McGraw-Hill. pp. 142-16
[20] Ahmad, S. A., Mark, N. N., &Okenna, E. A. (2014). Available Transfer Capability as index for Transmission Network Performance-A case study of Nigerian 330kV Transmission Grid. International Journal on Electrical Engineering and Informatics, 6 (3), pp 479-496