High Speed Switch with Series-Connected Vacuum and Gas Interrupters and Its DC Fast Transfer Application
Cheng Xian1,2, Bai Qinglin1,2, Ge Guowei1,2, Chen Hongyuan1,2, Du Shuai1,2
1. School of Electrical Engineering Zhengzhou University Zhengzhou 450001 China; 2. Henan Engineering Research Center of Power Transmission & Distribution Equipment and Electrical Insulation Zhengzhou 450001 China
Abstract:The hybrid DC circuit breaker (DCCB) is the key equipment for the control, protection and isolation of DC system. Among them, the natural commutation method relying on vacuum arc voltage has a simple structure, but the commutation performance does not meet the demand of large current interruption. Forced commutation requires additional transfer devices to increase system complexity and cost. Combined with the idea of vacuum and gas medium series cooperative breaking in the previous research of the team, a series-connected vacuum and gas interrupters is proposed in this paper. The arc voltage of the mechanical switch can be increased to several hundred volts by series-connected vacuum and gas interrupters. This switch is applied to medium voltage hybrid DC circuit breaker to accelerate current transfer, giving full play to the advantages of high gas arc voltage and fast recovery of vacuum medium. Firstly, the topology of a new hybrid DC circuit breaker based on series-connected vacuum and gas interrupters (Novel-DCCB) is introduced, and the working principle of the structure is analyzed. Based on the continuous transient vacuum arc model, Mayr gas arc model, power electronic device model, buffer circuit model and arrester model, a simulation model of a novel hybrid DC circuit breaker based on vacuum and gas integrated series is built in Matlab/Simulink. The breaking waveforms of the whole machine are simulated and compared. Novel-DCCB shortens the current transfer time from 1900 μs to 300 μs by increasing the arc voltage of the mechanical switch. The TIV at both ends of HSS after IGBT shutdown is mainly borne by the vacuum gap. The advantages of high gas arc voltage in the arcing stage and fast recovery of vacuum medium in the TIV stage of HSS are fully utilized. Finally, the simulation analysis shows that the transfer limit current of Novel-DCCB can reach 100 kA, and the transfer time is basically controlled within 0.5 ms. Then, a series-connected vacuum and gas interrupters prototype (HSS) was built, and its opening principle was introduced and tested. Under the influence of the double over-range linkage operating structure, the gas gap and the vacuum gap were separated successively, and the time interval was about 200 μs. Finally, the HSS arc voltage characteristic experimental platform and HSS high frequency TIV withstand voltage experimental platform were built. The effects of contact structure, contact material, gas medium and air pressure on the arc voltage characteristics were tested. The contact material was W70Cu, the contact structure was bridge type two contact, the gas type was hydrogen nitrogen mixed gas (H2:N2=2:3), the air pressure was 0.3 MPa, the gas arc voltage could reach 96 V, and the total HSS arc voltage could be increased from 20 V to 120 V; the static voltage distribution and insulation strength of HSS high-frequency TIV were tested. The results show that the partial pressure of HSS high-voltage side vacuum interrupter accounts for 55% under high-frequency TIV, and the maximum tolerance TIV of HSS is 20 kV.
程显, 白青林, 葛国伟, 陈鸿源, 杜帅. 真空与气体一体化串联机械开关及其直流快速转移应用[J]. 电工技术学报, 2024, 39(5): 1464-1473.
Cheng Xian, Bai Qinglin, Ge Guowei, Chen Hongyuan, Du Shuai. High Speed Switch with Series-Connected Vacuum and Gas Interrupters and Its DC Fast Transfer Application. Transactions of China Electrotechnical Society, 2024, 39(5): 1464-1473.
[1] 潘垣, 陈立学, 袁召, 等. 针对直流电网故障的限流与限能技术研究[J]. 中国电机工程学报, 2020, 40(6): 2006-2016. Pan Yuan, Chen Lixue, Yuan Zhao, et al.Research on current limiting and energy limiting technology for DC power grid fault[J]. Proceedings of the CSEE, 2020, 40(6): 2006-2016. [2] 程显, 王华清, 葛国伟, 等. 城市轨道交通1800 V高速混合式直流断路器研制[J]. 电力自动化设备, 2020, 40(1): 212-218. Cheng Xian, Wang Huaqing, Ge Guowei, et al.Research and design of 1800 V high-speed hybrid DC circuit breaker for urban rail transit system[J]. Electric Power Automation Equipment, 2020, 40(1): 212-218. [3] 谭喆, 高翔, 陈锐, 等. 多端柔性直流电网中机械式直流断路器的操作过电压分析[J]. 高压电器, 2023, 59(2): 31-36. Tan Zhe, Gao Xiang, Chen Rui, et al.Operating over-voltage analysis of mechanical DC circuit breaker in multi-terminal flexible DC network[J]. High Voltage Apparatus, 2023, 59(2): 31-36. [4] 廖敏夫, 黄金强, 葛国伟, 等. 国内外混合式断路器发展与研究现状[J]. 高电压技术, 2016, 42(6): 1688-1694. Liao Minfu, Huang Jinqiang, Ge Guowei, et al.Development and research of native and foreign hybrid circuit breaker[J]. High Voltage Engineering, 2016, 42(6): 1688-1694. [5] Zhang Liyan, Dong Enyuan, Zhuang Ruida, et al.Research on influence factors and acceleration methods of current commutation[J]. IEEE Access, 2020, 8: 194719-194728. [6] Meyer J M, Rufer A.A DC hybrid circuit breaker with ultra-fast contact opening and integrated gate-commutated thyristors (IGCTs)[J]. IEEE Transactions on Power Delivery, 2006, 21(2): 646-651. [7] Novello L, Baldo F, Ferro A, et al.Development and testing of a 10-kA hybrid mechanical-static DC circuit breaker[J]. IEEE Transactions on Applied Superconductivity, 2011, 21(6): 3621-3627. [8] Polman H, Ferreira J A, Kaanders M, et al.Design of a bi-directional 600 V/6 kA ZVS hybrid DC switch using IGBTs[C]//Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248), Chicago, IL, USA, 2002: 1052-1059. [9] Wang Dequan, Liao Minfu, Wang Rufan, et al.Research on vacuum arc commutation characteristics of a natural-commutate hybrid DC circuit breaker[J]. Energies, 2020, 13(18): 4823. [10] 葛国伟, 程显, 王华清, 等. 低压混合式直流断路器中真空电弧电流转移判据[J]. 电工技术学报, 2019, 34(19): 4038-4047. Ge Guowei, Cheng Xian, Wang Huaqing, et al.Investigation on the vacuum arc current commutation criteria of the low voltage DC hybrid circuit breaker[J]. Transactions of China Electrotechnical Society, 2019, 34(19): 4038-4047. [11] Klajn A.Switching vacuum arc in a pulsed transverse magnetic field[J]. IEEE Transactions on Plasma Science, 1999, 27(4): 977-983. [12] 甘之正, 余占清, 屈鲁, 等. 复合开关自然换流型混合式直流断路器的研究及测试[J]. 中国电机工程学报, 2023, 43(24): 9763-9772. Gan Zhizheng, Yu Zhanqing, Qu Lu, et al.Natural commutation hybrid DCCB based on vacuum and gas mechanical switch[J]. Proceedings of the CSEE, 2023, 43(24): 9763-9772. [13] Hassanpoor A, Häfner J, Jacobson B.Technical assessment of load commutation switch in hybrid HVDC breaker[J]. IEEE Transactions on Power Electronics, 2015, 30(10): 5393-5400. [14] 裘鹏, 黄晓明, 王一, 等. 高压直流断路器在舟山柔直工程中的应用[J]. 高电压技术, 2018, 44(2): 403-408. Qiu Peng, Huang Xiaoming, Wang Yi, et al.Application of high voltage DC circuit breaker in Zhoushan VSC-HVDC transmission project[J]. High Voltage Engineering, 2018, 44(2): 403-408. [15] 李斌, 李鹏宇, 温伟杰, 等. 机械式直流断路器性能分析及谐振换流方法[J]. 电工技术学报, 2022, 37(9): 2139-2149. Li Bin, Li Pengyu, Wen Weijie, et al.Performance analysis and resonant commutation method of mechanical DC circuit breaker[J]. Transactions of China Electrotechnical Society, 2022, 37(9): 2139-2149. [16] 陈龙龙, 魏晓光, 焦重庆, 等. 混合式高压直流断路器分断过程电磁瞬态建模和测试[J]. 电工技术学报, 2021, 36(24): 5261-5271. Chen Longlong, Wei Xiaoguang, Jiao Chongqing, et al.Electromagnetic transient modeling and test of hybrid DC circuit breaker[J]. Transactions of China Electrotechnical Society, 2021, 36(24): 5261-5271. [17] 温伟杰, 李鹏宇, 李斌, 等. 多端口机械式直流断路器的动作策略与参数优化[J]. 电力系统自动化, 2021, 45(11): 86-94. Wen Weijie, Li Pengyu, Li Bin, et al.Operation strategy and parameter optimization of multi-port mechanical DC circuit breaker[J]. Automation of Electric Power Systems, 2021, 45(11): 86-94. [18] 张翔宇, 余占清, 黄瑜珑, 等. 500 kV耦合负压换流型混合式直流断路器原理与研制[J]. 全球能源互联网, 2018, 1(4): 413-422. Zhang Xiangyu, Yu Zhanqing, Huang Yulong, et al.Principle and development of 500 kV hybrid DC circuit breaker based on coupled negative voltage commutation[J]. Journal of Global Energy Interconnection, 2018, 1(4): 413-422. [19] 程显, 闫冬冬, 葛国伟, 等. 基于耦合电抗器的阻容型混合直流断路器拓扑结构研究[J]. 电工技术学报, 2023, 38(3): 818-827. Cheng Xian, Yan Dongdong, Ge Guowei, et al.Research on the topology of the resistance-capacitance hybrid DC circuit breaker with coupling reactors[J]. Transactions of China Electrotechnical Society, 2023, 38(3): 818-827. [20] 程显, 杨培远, 葛国伟, 等. 基于真空与SF6气体串联间隙的新型高压直流断路器介质恢复特性[J]. 高电压技术, 2019, 45(8): 2393-2402. Cheng Xian, Yang Peiyuan, Ge Guowei, et al.Dielectric recovery characteristics of serial vacuum and SF6 gaps in novel HVDC circuit breakers[J]. High Voltage Engineering, 2019, 45(8): 2393-2402. [21] Khakpour A, Franke S, Gortschakow S, et al.An improved arc model based on the arc diameter[J]. IEEE Transactions on Power Delivery, 2016, 31(3): 1335-1341. [22] 马祥琴. 接触器主触头的串联与并联使用[J]. 农村电工, 2012, 20(6): 37. [23] 贾博文, 武建文, 夏尚文, 等. 直流自然换流式接触器设计与均压开断研究[J]. 电工技术学报, 2021, 36(20): 4371-4378. Jia Bowen, Wu Jianwen, Xia Shangwen, et al.Design and uniform voltage breaking research of a DC natural current commutation contactor[J]. Transactions of China Electrotechnical Society, 2021, 36(20): 4371-4378. [24] 熊迪, 谭亲跃, 丁月明, 等. 一种高压限流混合式直流断路器拓扑及参数优化研究[J]. 高压电器, 2022, 58(9): 37-44. Xiong Di, Tan Qinyue, Ding Yueming, et al.Study on topology and parameter optimization of high voltage current limiting hybrid DC breaker[J]. High Voltage Apparatus, 2022, 58(9): 37-44. [25] 王淼, 杨晓峰, 李世翔, 等. 城市轨道交通直流自耦变压器牵引供电系统故障保护研究[J]. 电工技术学报, 2022, 37(4): 976-989. Wang Miao, Yang Xiaofeng, Li Shixiang, et al.Fault protection of DC auto-transformer traction power supply system for urban rail transit[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 976-989. [26] 孟令新. 可控磁场氢气灭弧介质下直流电弧特性研究[D]. 沈阳: 沈阳工业大学, 2019. Meng Lingxin.Study on DC arc characteristics in hydrogen arc extinguishing medium with controllable magnetic field[D]. Shenyang: Shenyang University of Technology, 2019.