Evaluation and Analysis of Available Transfer Capability in Deregulated Power System Environment


  • M Dhana Sai Sri
  • P Srinivasa Varma






Available Transfer Capability, FACTS Technology, Network Capability, Optimal Power Flow, Transmission.


Reliability of network is need of the hour in the present power system market and is constrained by capability of the network. The network calculations are performed using accurate and high efficient strategies. In order to perform power transactions in the system, the computation of available transfer capability is essential which a metric of capability of the system. Generally, effect wattless power is not taken into account in the methodologies for computation of linear available transfer capability. In this paper, a methodology which considers the reactive power flows for enhancement of linear ATC is presented. In order to perform analysis theoretically, a standard IEEE 3 bus system is considered. Another case study i.e., 14 bus system available in IEEE test systems is used for simulation analysis. FACTS technology is incorporated in the existing system in order to enhance capability of the network. To facilitate transfer maximum power in the system, an optimal power-flow-based ATC enhancement model is formulated and presented along with simulation results. Studies based on the IEEE 3-bus system and 14-bus systems with TCSC demonstrate the effectiveness of FACTS control on ATC enhancement.




[1] Mark Gravener, H., & Chika Nwankpa (1999). Available Transfer Capability and First Order Sensitivity. IEEE Trans. on Power Systems, Vol. 14(2), pp. 512-518.

[2] Gabriel Ejebe, C., James Waight, G., Manuel SantosNieto, & William Tinney, F (2000). Fast Calculation of Linear Available Transfer Capability. IEEE Trans. on Power Systems, Vol. 15(3), pp. 1112-1116.

[3] Santiago Grijalva, Peter W., Sauer, & James D., Weber (2003). Enhancement of Linear ATC Calculations by the Incorporation of Reactive Power Flows. IEEE Trans. on Power Systems, Vol. 18(2), pp. 619-624.

[4] Azhar B., Khairuddin, S., Shahnawaz Ahmed, M., Wazir Mustafa, Abdullah, A., Mohd., Zin & Hussein Ahmad (2004). A Novel Method for ATC Computations in a LargeScale Power System. IEEE Trans. on Power Systems, Vol. 19(2), pp. 1150-1158.

[5] A., Rajabi-Ghahnavieh, M., Fotuhi-Firuzabad, Mohammad Shahidehpour & R., Feuillet (2009). Optimal Allocation of Available Transfer Capability in Operating Horizon. IEEE Trans. on Power Systems, Vol. 24(2), pp. 967- 975.

[6] R., Srinu Naik, Prof. K., Vaisakh & K. (2010), Anand. Determination of ATC with PTDF using Linear Methods in Presence of TCSC. IEEE Conf., Vol. 5, pp. 146-151.

[7] Yajing Gao, Zhi Wang & Haifeng Liang (2012). Available Transfer Capability Calculation with Large Offshore Wind Farms Connected by VSC-HVDC. IEEE, PESISGT, pp. 1-6.

[8] S., Nagalakshmi, S., Kalyani, V., Alamelu Shobana, R., Naga Ranjeni & P., Deepamangai (2012). Estimation of Available Transfer Capability under normal and contingency conditions in Deregulated Electricity Market. IEEE- International Conference on Advances in Engineering, Science and Management, pp. 453-459.

[9] Luo Gang, Chen Jinfu, Cai Defu, Shi Dongyuan & Duan Xianzhong (2013). Probabilistic assessment of available transfer capability considering spatial correlation in wind power integrated system. IET Generation, Transmission & Distribution, pp. 1527-1535.

[10] Nur Ashida Salim, Muhammad Murtadha Othman, Mohd Salleh Serwan & Mahmud Fotuhi-Firuzabad (2013). Determination of available transfer capability with implication of cascading collapse uncertainty. IET Generation, Transmission & Distribution, pp. 705-715.

[11] Xin Fang, Fangxing Li and Ningchao Gao (2014). Probabilistic Available Transfer Capability Evaluation for Power Systems Including High Penetration of Wind Power. PMAPS, IEEE Conference, pp. 1-6.

[12] James A., Momoh and S., Surender Reddy (2014). Optimal Location of FACTS for ATC Enhancement. IEEE Conference, pp. 1-5.

View Full Article: