Research on Combination Anti-Galloping Method between Interphase Spacer and Rotary Clamp Spacer for Transmission Lines

Abstract:

The efficacy of single anti-galloping equipments is limited due to shortage of relevant galloping mechanisms or more complex wind and ice conditions. In this paper, a combination anti-galloping method between interphase spacers and rotary clamp spacers is proposed to avoid or reduce the “whole galloping” and “subspan” galloping phenomenon which occur notwithstanding installing interphase spacers. The combination method is designed using multi-mechanisms anti-galloping design, controlling phase-to phase clearance, affecting structural whole properties, and changing iced shape. The galloping critical conditions of wind and ice to excite “whole galloping” and “subspan” galloping are increased by using rotary clamp spacers than by using only interphase spacers. The anti-galloping effect can be improved greatly by using the combination method.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 1284-1287
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.1284
• Online since: December 2012
• Authors: Bin Liu, Kuan Jun Zhu, Hai Jun Niu, Xue Ping Zhan, Xin Min Li, Yu Xian Di
• Keywords: Combination Anti-Galloping Method, Conductor Galloping, Interphase Spacer, Rotary Clamp Spacer

References

[1] CIGRE Study Committee B2 WG11. State of the art of conductor galloping, Electra No.322, (2007).

[2] K. J. Zhu, C. Q. Liu, X. C. Ren,at al. Research on anti-galloping of UHV transmission line．High Voltage Engineering.33(2007): 61-65(in Chinese)．

[3] K. J. Zhu, B. Liu, C. Q. Liu, et al. Research on Anti-galloping for UHV Transmission Line. Proceeding of the CSEE. 28(2008):12-20 (in Chinese)

[4] CIGRE Study Committee 22, WG 11, TF04. Galloping review of galloping control methods. Electra No.191, (2000).

[5] A. J. Carreira. Controlling conductor motion with interphase spacers in regions of contamination. IEEE Electrical Insulation Magazine. 24(2008):35-42.

DOI: 10.1109/mei.2008.4665349

[6] J.P. Den Hartog. Transmission Line Vibration due to Sleet. AIEE Transactions. 51(1932), 1074-1076.

[7] O. Nigol, P.G. Buchan.. Conductor Galloping, Part 1: Den Hartog Mechanism; Part II: Torsional Mechanism. IEEE Trans. PAS,100-699(1981).

DOI: 10.1109/tpas.1981.316921

[8] A. Otsuki. O. Kojima. Research on galloping and development of anti-galloping device. CEA International Symposium on Overhead Conductor Dynamics, Toronto,1981.