Rate of Change of Active Power as a Power Swing Blocking Function of Distance Relays
Keywords:Power Swing Blocking (PSB), Distance protection relay, Power swing
Power swings may cause undesired trips of protection relays and, consequently, shutting down power utility equipment, leading to the outage of loads. This paper presents a procedure for detecting power swings based on the rate of change of active power. When a power swing occurs, the derivative of the active power can be modeled as a sinusoidal function and, therefore, it is possible to estimate the frequency oscillation. The proposal takes advantage to this theoretical concept to detect power swings on transmission systems. Simulation results show that the developed algorithm has good performance, including research scenarios against low and large power swings. The protection relay is unblocked upon the occurence of a short-circuit. The proposed technique is simple to implement and can be employed as a Power Swing Blocking (PSB) function to avoid misoperation of distance protection relays.
A. Thakallapelli, R. Mehra, and H. A. Mangalvedekar, “Differentiation of Faults from Power Swings and Detection of High Impedance Faults by Distance Relays,” 2013 IEEE 1st Int. Conf. Cond. Assess. Tech. Electr. Syst., p. 5, 2013.
A. B. Nassif, V. F. Da Costa, and L. C. P. Da Silva, “Efeitos do SVC e do STATCOM no amortecimento de oscilações eletromecânicas de baixa frequência em sistemas de potência,” IEEE Lat. Am. Trans., vol. 2, no. 2, pp. 120–125, 2004.
J. Mooney and N. Fischer, “Application Guidelines for Power Swing Detection on Transmission Systems Application Guidelines for Power Swing Detection on Transmission Systems,” 32nd Annu. West. Prot. Relay Conf., p. 10, 2005.
J. HOLBACH, “New Out of Step Blocking Algorithm for Detecting Fast Power Swing Frequencies,” 2006 Power Syst. Conf. Adv. Metering, Prot. Control. Commun. Distrib. Resour., pp. 182–199, 2006.
J. Blumschein, Y. Yelgin, and J. Quispe H., “Power Swing during fault conditions - blackout analysis and avoidance,” 2015 68th Annu. Conf. Prot. Relay Eng., pp. 241–247, 2015.
E. Sorrentino and P. Villafuerte, “Effect of the Control of Generators and Turbines on the Transient Stability of a Power System,” IEEE Lat. Am. Trans., vol. 14, no. 3, pp. 1227–1234, 2016.
H. Verdejo, D. Gonzalez, J. Delpiano, and C. Becker, “Tuning of Power System Stabilizers using Multiobjective Optimization NSGA II,” IEEE Lat. Am. Trans., vol. 13, no. 8, pp. 2653–2660, 2015.
C. Liu and J. Li, “Patterns of Cascaded Events in Blackouts,” Power Energy Soc. Gen. Meet. - Convers. Deliv. Electr. Energy 21st Century, pp. 1–2, 2008.
IEEE PSRC WG D6, “Power Swing And Out-of-Step Considerations on Transmission Lines,” 2005.
P. K. Nayak, J. Ganeswara, P. Kundu, A. K. Pradhan, and P. Bajpai, “A Comparative Assessement of Power Swing Detection Techniques,” Drives Energy Syst. 2010 Power India, 2010 Jt. Int. Conf. Power Electron., pp. 1–4, 2010.
X. Lin, Z. Li, S. Ke, and Y. Gao, “Theoretical Fundamentals and Implementation of Novel Self-Adaptive Distance Protection Resistant to Power Swings,” IEEE Trans. Power Deliv., vol. 25, no. 3, pp. 1372–1383, 2010.
H. Zadeh, “Evaluation and Performance Comparison of Power Swing Detection Algorithms,” IEEE Power Eng. Soc. Gen. Meet. 2005, vol. 2, pp. 1842–1848, 2005.
N. Fischer, G. Benmouyal, D. Hou, D. Tziouvaras, J. Byrne-finley, and B. Smyth, “Do System Impedances Really Affect Power Swings – Applying Power Swing Protection Elements Without Complex System Studies,” 2012 65th Annu. Conf. Prot. Relay Eng., pp. 108–119, 2012.
B. Mahamedi, “A Very Fast Unblocking Scheme for Distance Protection to Detect Symmetrical Faults during Power Swings,” IPEC, 2010 Conf. Proc., pp. 378–383, 2010.
S. M. Brahma, “Distance Relay With Out-of-Step Blocking Function Using Wavelet Transform,” IEEE Trans. Power Deliv., vol. 22, no. 3, pp. 1360–1366, 2007.
B. Mahamedi, “A New Power Swing Blocking Function Based on Wavelet Transform,” 2nd Int. Conf. Electr. Power Energy Convers. Syst., pp. 1–6, 2011.
L. Xiangning, Z. Qing, L. Wenjun, W. Kecheng, and W. Hanli, “A fast unblocking scheme for distance protection to identify symmetrical fault occurring during power swings,” 2006 IEEE Power Eng. Soc. Gen. Meet., p. 8 pp., 2006.
X. Lin, Y. Gao, and P. Liu, “A Novel Scheme to Identify Symmetrical Faults Occurring During Power Swings,” IEEE Trans. Power Deliv., vol. 23, no. 1, pp. 73–78, 2008.
R. Dubey and S. R. Samantaray, “Wavelet singular entropy-based
symmetrical fault-detection and out-of-step protection during power swing,” IET Generation, Transmission & Distribution, vol. 7, no. 10, pp. 1123–1134, Oct. 2013