Voltage Stability Assessment by Using Local Bus Parameters

Year 2020, Volume: 8 Issue: 4, 757 - 770, 01.12.2020

Enes Talha Gümüş , Selim Meriç , Mustafa Turan , Mehmet Ali Yalçın

https://doi.org/10.36306/konjes.712634

Abstract

In this study, in order to determine critical values of a load bus with respect to voltage stability, two different estimation approaches using local measurements of voltage (V), current (I) and phase angle (φ) on the relevant bus are investigated. First, Thevenin equivalent circuit parameters of the power system is estimated from local bus measurements; then, the critical voltage and voltage stability margin values required for evaluation of the voltage stability are calculated. The proposed approach has been tested on the IEEE 30 bus test system. In IEEE 30 standard test system, the data of the buses to be analyzed was acquired by setting up a power flow with MATPOWER software. The simulation results show that both approaches have successfully determined the voltage stability limits on the load buses and they can be used to evaluate the loading levels of the buses in terms of voltage stability, to determine the critical buses and to prioritize the load shedding operations.

Keywords

Voltage stability, Thevenin equivalent, Voltage stability margin

YÜK BARASI ÖLÇÜMLERİNE DAYALI GERİLİM KARARLILIĞI DEĞERLENDİRMESİ

Abstract

Bu çalışmada, gerilim kararlılığı açısından bir yük barasındaki kritik değerlerin belirlenmesi için, ilgili baraya ait gerilim (V), yük akımı (I) ve güç açışı (φ) yerel ölçümlerini kullanarak kestirim yapan iki farklı yaklaşım irdelenmiştir. İlk olarak, yerel bara ölçümlerinden güç sisteminin Thevenin eşdeğer devre parametreleri kestirilmiş, ardından gerilim kararlılığının değerlendirilmesi için gerekli kritik gerilim ve gerilim kararlılık marjini değerleri hesaplanmıştır. Sunulan yaklaşım IEEE 30 baralı test sistemi üzerinde denenmiştir. IEEE 30 baralı standart test sisteminde MATPOWER yazılımı ile güç akışı yapılarak incelenecek baralara ait veriler elde edilmiş ve her iki yöntem ile gerilim kararlılığı değerlendirmesi gerçeklenmiştir. Benzetim sonuçları, iki yaklaşımında yük baralarındaki gerilim kararlılık sınırlarını başarı ile belirlediği ve baraların gerilim kararlılığı açısından yüklenme düzeylerinin değerlendirilmesinde, kritik baraların tespitinde ve yük atma işlemlerinin önceliklenmesinde kullanılabileceğini göstermiştir.

Keywords

Gerilim kararlılığı, Thevenin eşdeğeri, Gerilim kararlılığı marjini

References

• Van Cutsem, T., Vournas, C.,1998, ‘’Voltage Stability of Electric Power Systems’’, Kluwer Academic Publishers.
• Van Cutsem, T., Vournas, C.,1996, ‘’Voltage Stability Analysis in Transient and Mid-term Time Scales,”
• IEEE Transactions in Power Systems, Cilt 11, Sayı 1, ss. 146-154.
• Glover, J.D., Sarma, M.S.,2001, ‘’Power System Analysis and Design’’, Brooks/Cole, 3. Baskı, Crow, M., 2002, ‘’Computational Methods for Electric Power Systems’’, CRC Yayınları.
• Canizares, C.A., De Souza, A.Z., Quintana, V.H., 1996, ‘’Comparison of Performance Indices for Detection of Proximity to Voltage Collapse,” IEEE Transactions on Power Apparatus and Systems, Cilt 11, Sayı 3, ss. 1441-1450.
• Chiang, H.D., Jean-Jumeau, R.,1993, ‘’Toward a Practical Performance Index for Predicting Voltage Collapse in Electric Power Systems’’, Proceeding of the 1993 IEEE/PES Summer Meeting.
• Kessel, P., Glavitsch, H.,1986,’’ Estimating The Voltage Stability of A Power System, IEEE Transactions on Power Systems’’, Cilt 1, Sayı 3, ss. 346-354.
• Tuan, T.Q., Fandino, J., Hadjsaid, N.J., Sabonnadiere, C., VU., H.,1994,‘’Emergency Load Shedding to Avoid Risks of Voltage Instability Using Indicators’’, IEEE Transactions on Power Systems, Cilt 9, Sayı 1, ss. 341-351.
• Vu, K., Begovic, M., Novosel, D., Saha, M.,1999,’’Use of Local Measurements to Estimate Voltage-Stability Margin’’, IEEE Transactions on Power Systems, Cilt 14, Sayı 3, ss. 1029-1035.
• Milosevic, B. , Begovic, M.,2003,’’Voltage-Stability Protection and Control Using a Wide-Area Network of Phasor Measurement’’, IEEE Transactions on Power Systems, Cilt 18, Sayı 1, ss. 121-127.
• Haque, M.H. ,2003,’’ On-line Monitoring of Maximum Permissible Loading of A Power Within The Voltage Stability Limits’’, IEEE Proceedings of Generation Transmission and Distribution, London, UK.
• Turan, M; Demircioğlu, S.B. ; Yalçın, M. A. ,2006,’’ Voltage Stability Evaluation by Using Maximum Power Transfer Phasor Diagram’’, Journal of Applied Sciences, Cilt 6,Sayı 13,ss. 2809-2812, Asian Network for Scientific Information
• Demircioğlu, S. B. ,2006, ‘’Enerji Sistemlerinde Gerilim Kararlılığı Sınırlarının Yerel Bara Parametreleri Kullanılarak Gerçek Zamanlı Değerlendirilmesi’’, Doktora Tezi, Sakarya Üniversitesi, Fen Bilimleri Enstitüsü, Elektrik-Elektronik Mühendisliği Bölümü.
• Cardet, C.E.D, Analysis on Voltage Stability Indices, AACHEN University, Master Thesis, 2010.
• Ghaghishpour A., Koochaki A.,2020,’’ An intelligent method for online voltage stability margin assessment using optimized ANFIS and associated rules technique’’ ISA Transactions.
• Rodriguez-Garcia L.,Perez-Londono S., Mora-Florez J.,2019,’’ An optimization-based approach for load modelling dependent voltage stability analysis,’’, Electric Power Systems Research,, Cilt 177, ss. 105960.
• Glavic, M., Van Cutsem T.,2009,’’ Wide-Area Detection of Voltage Instability from Synchronized Phasor Measurements’’, Part I: Principle, IEEE Transactions on Power Systems, Cilt 24, Sayı 3, ss. 1408-1416.
• Glavic, M., Van Cutsem T.,2009,’’Wide-Area Detection of Voltage Instability from Synchronized Phasor Measurements’’, Part II: Simulation Results, IEEE Transactions on Power Systems, Cilt 24, Sayı 3, ss. 1417-1425.
• Glavic, M., Van Cutsem T.,2008,’’ Detecting with PMUs The Onset of Voltage Instability Caused by A Large Disturbance’’, Proceedings 2008, IEEE Power Engineering Society General Meeting, Pittsburgh, PA.
• Burchett, Stephen M.,Douglas, Daniel,Ghiocel, Scott G.,2018,’’ An Optimal Thévenin Equivalent Estimation Method and its Application to the Voltage Stability Analysis of a Wind Hub’’, IEEE Transactions on Power Systems ,Cilt 33, Sayı 4, ss. 3644-3652.
• A. Mahari, H. Seyedi, 2016,’’ A wide area synchrophasor-based load shedding scheme to prevent voltage collapse’’, International Journal of Electrical Power and Energy Systems, Cilt 33, ss. 248-257.
• IEEE/CIGRE Joint Task Force on Stability Terms and Definitions,2004, ‘’Definition and Classification of Power System Stability’’, IEEE Transactions on Power Systems, Cilt 19, Sayı 2, ss.1387-1401.
• Mandoulidis P., Vournas C.,2020,’’ A PMU-based real-time estimation of voltage stability and margin’’, Electric Power Systems Research, Cilt 178, ss. 106008.
• IEEE 30 Bus Standart Test System, https://www.al-roomi.org/power-flow/30-bus-system, (10.05.2019).