IGCT Series Voltage-sharing Technology for DC Breaking

被引：0
|
作者：
Qu L. [1 ]
Zhang X. [1 ]
Chen Z. [1 ]
Yu Z. [1 ]
Zeng R. [1 ]
机构：
[1] State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing
来源：
Zeng, Rong (zengrong@tsinghua.edu.cn) | 2018年 / Science Press卷 / 44期
基金：
中国博士后科学基金;
关键词：
DC circuit breaker; Dynamic voltage-sharing; IGCT; Integrated gate commutated thyristors; Series valve; Static voltage-sharing;
D O I：
10.13336/j.1003-6520.hve.20180131010
中图分类号：
学科分类号：
摘要：
The series and parallel connection of power electronic devices is the main combination way of solving and realizing high voltage, high power direct current (DC) circuit breakers, and power electronic converters. We researched the static and dynamic voltage-sharing technology of the power electronic devices for high voltage DC breaking. Firstly, the causes of the uneven voltage-sharing of IGCT in series and the voltage-sharing technology of IGCT in series were analyzed to give the voltage-sharing scheme of IGCT in series for DC breaking. Then, the influence of the difference between the buffer capacitance, the buffer resistance and the turn-off trigger time on the voltage-sharing characteristic were analyzed. Finally, a power electronic valve was set up with four IGCTs in series for experimental verification. Research results indicate that, ① the static voltage-sharing can adopt the static voltage-sharing resistance in parallel, and the dynamic voltage-sharing in load side can adopt the passive buffer method with buffer circuit in parallel; ② the larger the buffer capacitance is, the smaller the buffer resistance is, then the smaller the over-voltage is, and the greater the time difference between the trigger signal is, the greater the degree of non voltage-sharing will be; ③ the uneven voltage-sharing coefficient of the breaking tests of 10.5 kV/1.5 kA is 5.71%, and the voltage-sharing is effective; ④ Based on the modular power electronic series valve, the integrated experiments of the hybrid DC circuit breaker are completed, the short circuit current 3.6 kA and the over-voltage 21 kV are turned off within 3 ms. The feasibility of the voltage-sharing scheme of IGCT in series for high voltage DC breaking is verified by experiments, which provides the technical basis for the application of modular power electronic series valve in DC breaking. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：409 / 416
页数：7
相关论文
共 24 条
  • [1] Chatroux D., Lafore D., Schanen J., Series and Parallel Connections of MOS and IGBT, pp. 133-183, (2010)
  • [2] Yu H., Lu T., Ji S., Et al., Active clamping circuit threshold voltage design for series-connected HV IGBTs, Proceedings of the CSEE, 36, 5, pp. 1357-1365, (2016)
  • [3] Dai Y., Zhang M., Fan K., Et al., Investigation of series-connected IGBTs in fast high-voltage circuit breaker, Journal of Fusion Energy, 34, 6, pp. 1406-1410, (2015)
  • [4] Zhang F., Yang X., Ren Y., Et al., Voltage balancing circuit for series-connected IGBTs in solid-state breaker, Proceedings of the CSEE, 36, 3, pp. 656-663, (2016)
  • [5] Zha S., Zheng J., Study on technology of voltage sharing in series for IGBT-based hybrid crcuit breaker, Power System Technology, 34, 4, pp. 177-182, (2010)
  • [6] Meyer J., Rufer A., A DC hybrid circuit breaker with ultra-fast contact opening and integrated gate-commutated thyristors (IGCTs), IEEE Transactions on Power Delivery, 21, 2, pp. 646-651, (2006)
  • [7] Jurgen H., Bjorn J., Proactive hybrid HVDC breakers: a key innovation for reliable HVDC grids, Electric Power System of the Future-integrating Supergrids and Microgrids on the International Symposium, pp. 13-15, (2011)
  • [8] Wei X., Luo X., Cao J., Et al., A DC circuit breaker and its breaking method
  • [9] Zhang C., High voltage DC circuit breaker and its key technology, (2014)
  • [10] Yao T., Wen J., Li J., Et al., A hybrid high voltage DC circuit breaker design plan with series-connected IGBTs, Power System Technology, 39, 9, pp. 2484-2489, (2015)
123