Optimal Design of Gas Insulated Substation Bus Bar Based on Breakdown Criteria of SF6 Gas

被引：0
|
作者：
Wu X. [1 ]
Zhang K. [1 ]
Yu G. [1 ]
Fang L. [1 ]
Wu S. [2 ]
Zhang J. [2 ]
机构：
[1] College of Automation, Wuhan University of Technology, Wuhan
[2] China Electric Power Research Institute, Wuhan
来源：
Wu, Xixiu (wuxixiu@163.com) | 1950年 / Science Press卷 / 43期
关键词：
Breakdown margin; Gas insulated substation bus bar; Multi-field coupling; Optimization design; SF[!sub]6[!/sub] gas;
D O I：
10.13336/j.1003-6520.hve.20170527028
中图分类号：
学科分类号：
摘要：
In view of the existing standard gas insulated substation (GIS) bus bar design which only considers the temperature rise of main conductor and neglects the interior insulation level of GIS chamber, a new method based on SF6 breakdown criteria is presented to design GIS bus bar. Compared with traditional design methods, the new method could consider the GIS running reliability more comprehensively. Firstly, we proposed a criteria of SF6 gas and then a concept analyzing the margin of SF6 breakdown electric field Em. Then, we set up an electromagnetic-thermal-fluent multi-filed coupling model to calculate the Em. Moreover, factors influencing Em were discussed. Thereby, a new method to optimize dimension of the GIS bus bar is developed. The optimization principle is that making the value of SF6 breakdown margin Em to be the largest as much as possible. This optimization principle is that not only the temperature rise can meet the design requirements, but also the reliability and security of GIS equipment should be ensured from the insulation perspective. Finally, we investigated the insulation state of GIS when the very fast transient electromagnetic phenomena (VFT) occurring. The result shows that the GIS chamber is still in dangerous condition to some degree although the GIS dimension has been already optimized according to the rated working condition. This conclusion is very important for GIS bus bar design. It is indicated that the VFT condition which is always ignored in previous study should be taken into account when we design the GIS bus bar in the future. © 2017, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：1950 / 1957
页数：7
相关论文
共 14 条
  • [1] Liu Z., DL/T728-2013 Guide for Selection of Gas Insulated Metal Enclosed Switchgear, (2015)
  • [2] Fan Z., Zhang D., Chen X., Et al., Electromagnetic field and fluid field calculation and analysis about the loss and heat of GIS bus bar, Proceedings of the CSEE, 29, pp. 241-244, (2009)
  • [3] Labridis D.H.V., Finite element computation of field, forces and inductances in underground SF<sub>6</sub> insulated cables using a coupled magneto-thermal formulation, IEEE Transactions on Magnetics, 30, 4, pp. 1407-1415, (1994)
  • [4] Jin X., Xie Z., Liu X., Et al., Thermal analysis of three-phase enclosed GIS bus bar based on finite-element method, Engineering Journal of Wuhan University, 46, 5, pp. 654-658, (2015)
  • [5] Qiu C., Li J., Pan G., The thermal field analysis of GIS bus bar and its application in the temperature on-line monitoring, 2012 China International Conference on Electricity Distribution (CICED), pp. 1-6, (2012)
  • [6] Kim J.K., Hahn S.C., Park K.Y., Et al., Temperature rise prediction of EHV GIS bus bar by coupled magneto thermal finite element method, IEEE Transactions on Magnetics, 41, 5, pp. 1636-1639, (2005)
  • [7] Wu X.W., Shu N.Q., Li H.T., Et al., Contact temperature prediction in three-phase gas-insulated bus bars with the finite-element method, IEEE Transactions on Magnetics, 50, 2, pp. 277-280, (2014)
  • [8] Kim H.K., Oh Y.H., Lee S.H., Predict of temperature-rise in the gas insulated switchgear bus bar using magnetic-thermal multi-physics analysis, Transmission and Distribution Conference Exposition: Asia and Pacific, pp. 1-4, (2009)
  • [9] Wang L., Lin X., Numerical simulation analysis of the small current media critical breakdown voltage on SF<sub>6</sub> circuit breaker, Proceedings of Power Transmission Annual Meeting 2012, (2012)
  • [10] Zeng L., Guo J., Yuan C., Et al., Temperature field distribution of three-phase box GIS bus based on finite element, Water Resources and Power, 33, 9, pp. 196-199, (2015)
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