Contingency Analysis of Ethiopia’s 230 kV Transmission Network

Öz

Transmission line congestion is any one of the failure that leads the overall transmission network to be either in over loaded or under loaded condition. Loading effects of the entire network may lead the system to cascaded outage or total blackout. The study concentrated on the contingency analysis of Ethiopia’s 230KV transmission network a case of Sebeta to Kaliti transmission line. The outage of this line cause overloading on Gefersa to Kaliti transmission line and makes the system not to be secure and reliable; further cascaded outage will lead the system to the total blackout. The analysis of such problems has been investigated by considering four scenarios like normal state, single line outage, cascaded line outage and inserting Distributed Static Series Compensator (DSSC) in to the over- loaded line. As a result, the system became reliable and secure by inserting the device in the most sensitive line of the network.

Kaynakça

1. http://ewh.ieee.org/cmte/pes/etcc/D_Divan_R_Harley_Smart_Control.pdf, accessed on April 23, 2014.
2. L. Gyugyi, C.D. Schauder, and K.K. Sen, “SSSC: A solid-state approach to the series compensation of transmission lines,” IEEE Transactions on Power Delivery, vol. 12, no. 1, pp. 406-417, Jan. 1997.
3. www.krishisanskriti.org, accessed on Sept. 2015.
4. H. Johal. “Design Considerations for Series-Connected Distributed FACTS Converters”, IEEE Transactions on Industry Applications, 2007.
5. http://www.scribd.com/doc/216543970/A-Distributed-Static-Series-Compensator-System-2007-2, accessed on May 22, 2014.
6. D. Divan, W. Brumsickle, R. Schneider, B. Kranz, R. Gascoigne, D. Bradshaw, M. Ingram and I. Grant, “A distributed static series compensator system for realizing active power flow control on existing power lines,” IEEE Transactions on Power Delivery, vol. 22, no. 1, pp. 642–649, Jan. 2007.
7. http://www.irnetexplore.ac.in/, accessed on Sept. 2015.
8. http://www.Power-world.com/simulator-v17-manual, accessed on March 21, 2014.

9. A.A. Afzalian, S.A.N. Niaki, M.R. Iravani and W.M. Wonham, “Discrete-Event Systems, Supervisory Control for a Dynamic Flow Controller” IEEE Transactions on Power Delivery, Vol. 24, No.1, Jan. 2009.
10. A. Bergen, ‘Power System Analysis’, Prentice Hall, 1986.
11. www.electronicstutorials.ws/transformer/transformer-basics.html, accessed on May 25, 2014
12. www.alibaba.com/showroom/pwm-inverter.html, accessed on May 25, 2014
13. http://uk.farnell.com/labfacility/z2-k-1m-iec/sensor-thermocouple-k-1m-ptfe/dp/7076150
14. www.parts-express.com/harrison-labs-fmod-inline-crossover-pair-50-hz, accessed on May 25, 2014
15. www.alibaba.com/showroom/ac-to-dc-rectifier.html, accessed on May 25, 2014