Investigation of small signal stability with automatic voltage regulation-secondary voltage control in power systems

Öz

It is an important issue to correct the disturbances that occur in the system during transient stability in power systems in a short time. For this, both the generator and the buses must be controlled in a coordinated manner. In this study, small signal stability analysis in a multi-machine power system was examined using automatic voltage regulator and secondary voltage control. While automatic voltage regulator is used to control the generator, secondary voltage control is used to control the pilot bus determined depending on the fault. Various results have been examined for the small signal stability as well as the angular speed change of the system. Comparisons are made according to the situations in which automatic voltage regulator-secondary voltage control is used and not used. According to the results obtained, it has been determined that the system gives better results by using the automatic voltage regulator-secondary voltage control in a coordinated manner.

Anahtar Kelimeler

• Power systems
• Secondary voltage control
• Automatic voltage regulator
• PSAT

Güç sistemlerinde otomatik gerilim regülatörü-sekonder gerilim kontrolü ile küçük sinyal kararlılığının incelenmesi

Öz

Güç sistemlerinde geçici kararlılık esnasında sistemde oluşan bozunumların kısa sürede düzeltilmesi önemli bir konudur. Bunun için hem generatör hem de baraların koordineli bir şekilde kontrol edilmesi gerekmektedir. Bu çalışmada, otomatik gerilim regülatörü ve sekonder gerilim kontrolü kullanılarak çok makineli bir güç sisteminde küçük sinyal kararlılığı analizi incelenmiştir. Generatörün denetlenmesinde otomatik gerilim regülatörü kullanılırken, arızaya bağlı olarak belirlenen pilot baranın denetiminde sekonder gerilim kontrolü kullanılmaktadır. Sistemin açısal hız değişiminin yanı sıra küçük sinyal kararlılığı için de çeşitli sonuçlar irdelenmiştir. Karşılaştırmalar, otomatik gerilim regülatörü-sekonder gerilim kontrolünün kullanıldığı ve kullanılmadığı durumlara göre yapılmıştır. Elde edilen sonuçlara göre otomatik gerilim regülatörü-sekonder gerilim kontrolünün koordineli bir şekilde kullanılması ile sistemin daha iyi sonuçlar verdiği tespit edilmiştir.

Anahtar Kelimeler

• Güç sistemleri
• Otomatik gerilim regülatörü
• Sekonder gerilim kontrolü
• PSAT

Kaynakça

1. Kumar, A. (2020). Nonlinear AVR for power system stabilisers robust phase compensation design. IET Generation, Transmission & Distribution, 14(21), 4927-4935.
2. Dudgeon, G. J., Leithead, W. E., Dysko, A., o'Reilly, J., & McDonald, J. R. (2007). The effective role of AVR and PSS in power systems: Frequency response analysis. IEEE Transactions on Power Systems, 22(4), 1986-1994.
3. Rommes, J., Martins, N., & Freitas, F. D. (2009). Computing rightmost eigenvalues for small-signal stability assessment of large-scale power systems. IEEE transactions on power systems, 25(2), 929-938.
4. Salim, R. H., & Ramos, R. A. (2012). A model-based approach for small-signal stability assessment of unbalanced power systems. IEEE transactions on power systems, 27(4), 2006-2014.
5. Keskes, S., Bouchiba, N., Sallem, S., Chrifi-Alaoui, L., & Kammoun, M. B. A. (2017, May). Transient stability enhancement and voltage regulation in SMIB power system using SVC with PI controller. In 2017 6th International Conference on Systems and Control (ICSC) (pp. 115-120). IEEE.
6. Morsali, J., Kazemzadeh, R., Azizian, M. R., & Morsali, H. (2012, May). Novel coordination of dual-channel PSS, AVR and TCSC damping controller to enhance power system overall stability. In 20th Iranian Conference on Electrical Engineering (ICEE2012) (pp. 552-557). IEEE.
7. Abdalla, O. H., Ghany, A. A., & Fayek, H. H. (2016, December). Coordinated PID secondary voltage control of a power system based on genetic algorithm. In 2016 Eighteenth International Middle East Power Systems Conference (MEPCON) (pp. 214-219). IEEE.
8. Florez, J., Tapia, A., Criado, R., & Griajalba, J. M. (1994). Secondary voltage control based on a robust multivariable PI controller. International Journal of Electrical Power & Energy Systems, 16(3), 167-173.

9. Tapia, R., Aguilar, O., Minor, H., & Santiago, C. (2012). Power system stabilizer and secondary voltage regulator tuning for multi-machine power systems. Electric Power Components and Systems, 40(16), 1751-1767.
10. Döşoğlu M. K., & Kaymaz E. (2023). Güç sistemlerinde farklı güç sistemi kararlı kılıcısı modellerin sekonder gerilim kontrolü üzerindeki etkileri. Uluslararası Teknolojik Bilimler Dergisi, 15(2), 49-58.
11. Su, H. Y., & Liu, C. W. (2013). An adaptive PMU-based secondary voltage control scheme. IEEE Transactions on Smart Grid, 4(3), 1514-1522.
12. Mohammadi-Ivatloo, B., & Hosseini, S. H. (2008, May). Optimal PMU placement for power system observability considering secondary voltage control. In 2008 Canadian Conference on Electrical and Computer Engineering (pp. 000365-000368). IEEE.
13. S. Essallah, A. Buallegue, ve A. Khedher, “Integration of Automatic Voltage Regulator and Power System Stabilizer: Small-Signal Stability in DFIG-Based Wind Farms,” J. Mod. Power Syst. Clean Energy, c. 7, sayı 5, ss. 1115–1128, 2019.
14. Pillai, A. G., Thomas, P. C., Sreerenjini, K., Baby, S., Joseph, T., & Srecdharan, S. (2013, June). Transient stability analysis of wind integrated power systems with storage using central area controller. In 2013 Annual International Conference on Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy (pp. 1-5). IEEE.
15. Kundur P (1994) Power system stability and control. McGraw Hill, New York.
16. Essallah S., Buallegue A., Khedher A., “Integration of Automatic Voltage Regulator and Power System Stabilizer: Small-Signal Stability in DFIG-Based Wind Farms,” J. Mod. Power Syst. Clean Energy, c. 7, sayı 5, ss. 1115–1128, 2019.
17. Milano, F. (2005). An open source power system analysis toolbox. IEEE Transactions on Power systems, 20(3), 1199-1206.