2/3匝线圈式纵磁触头大开距真空断路器分闸速度设计

doi:10.19595/j.cnki.1000-6753.tces.230608

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摘要

纵磁触头真空断路器分闸速度特性的合理设计,可有效地避免大电流开断过程中真空电弧阳极斑点的形成或缩短阳极斑点持续时间,显著地提升断路器短路电流开断性能。然而,现阶段仍然缺乏线圈式纵磁触头真空断路器全行程分闸速度特性的量化设计方法。该文试验研究了电弧电流、分闸速度对2/3匝线圈式纵磁触头大电流真空电弧阳极放电模式演变的影响规律,获得了不同分闸速度下线圈式纵磁触头阳极放电模式图,据此提出了线圈式纵磁触头初始分闸速度v₁的设计值,应不小于其强电弧演变为扩散态电弧的临界触头开距峰值所对应的分闸速度;对于平均分闸速度v₂的设计值,应不大于大开距活跃阳极放电模式形成的临界触头开距。同时,采用实际开断过程触头间隙磁场强度与阳极放电模式演变的临界纵向磁场强度对比,可校验上述分闸速度特性设计的合理性。应用上述方法,确定了126 kV单断口真空断路器的分闸速度特性设计值为v₁=3.5 m/s、v₂=3.0 m/s,并通过型式试验验证了断路器在上述分闸速度特性下的短路电流开断性能。

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关键词 ：纵向磁场, 大开距, 真空断路器, 阳极放电模式, 分闸速度

Abstract：

The development of vacuum circuit breakers (VCBs) towards transmission voltage is an effective alternative of SF₆ CBs on background of carbon dioxide emission and carbon neutrality nowadays. In the VCBs, the axial magnetic field (AMF) contacts have been widely mounted tends to promote the breaking capability of circuit breakers. The vacuum arc plasma can be constrained by the axial magnetic field lines to counteract the pinch force of conducting current, which always concentrate the arc plasma at local anode surface to generate an anode spot in high current interruption process. In this case, a rational design of opening velocities for the VCBs with coil-type AMF contacts could effectively regulate the flux density of the axial magnetic field imposed on the electrode space. However, there is still a lack of quantitative design method for a full stroke opening velocities of the VCB with coil-type AMF contacts.
This paper experimentally investigates the influence of arcing current and opening velocities on evolution of vacuum arc anode discharging modes. Couples of coil-type AMF contacts, tending to be applied in a 126 kV single-break vacuum circuit breaker, were mounted in a demountable vacuum chamber to investigate the influence of opening velocities on transitions of vacuum arc anode discharging mode. A high charge coupled device (CCD) was used to photograph these transitions. Two kinds of opening velocities, v₁ and v₂, were used to define an opening travel-curve: v₁ is an initial opening velocity, which defines as an average velocity over 1/3 contact stroke, d, of 60 mm; while, v₂ is an average velocity over 2d/3. In the experiment, v₁ varied from 1.8 m/s to 2.4 m/s and 2.7 m/s, respectively. Correspondingly, v₂ varied from 2.4 m/s to 2.7 m/s and 3.0 m/s. The arcing current was set to rise from 4 kA to 40 kA, stepped by 4 kA. Test result shows that v₁ has significant impact on the transition of intense arc mode into diffuse arc mode in the first arcing current loop, while v₂ significantly influences the formation of both footpoint mode and anode spot mode in the rest arcing current loop.
The design of v₁ should higher than the threshold velocity, v_{1_th} of 3.5 m/s, which corresponds to a peak critical contact gap d_{I_th} for the transitions of intense arc mode into diffuse arc mode. While, v₂ should not exceed the threshold velocity, v_{2_th} of 3.0 m/s, which corresponds to a maximum critical contact gap for the formation of footpoint mode and anode spot mode. In this case, the high current vacuum arc could quickly transit from the intense arc mode into diffuse arc mode in short arcing time high current interruption. Meanwhile, the formation of anode spot could be effectively avoided in long arcing time high current interruption. In addition, the transition of anode discharging mode for the test AMF contact could be predicted by comparing the actual axial magnetic flux density, B_axial, with the critical quantities, B_{cri_intense}and B_{cri_anode}. These critical axial magnetic flux densities were experimentally determined for the transitions of intense arc mode to diffuse arc mode, and diffuse arc mode to footpoint mode and anode spot mode, respectively. The above v₁ and v₂ were applied on a 126 kV single-break VCB, and proved to be effectiveness by passing series of short-circuit current breaking type test. The result could provide reference and foundation for VCBs developing towards transmission voltage level.

Key words： Axial magnetic field large-gap vacuum circuit breakers anode discharge mode opening velocity

收稿日期: 2023-05-04

PACS:

TM561.2

基金资助:

宁夏回族自治区重点研发计划项目（2022BDE93011）和国网宁夏电力有限公司科技项目（5229DK22000B）专项资金（xzy012019022）资助

通讯作者: 姚晓飞男,1985年生,博士,副研究员,研究方向为高压开关真空电弧理论与技术,。E-mail：yaoxf85@mail.xjtu.edu.cn

作者简介: 马飞越男,1986年生,硕士,高级工程师,研究方向高电压技术及高压开关技术。E-mail：fyma.1986@163.com

引用本文:

马飞越, 姚晓飞, 刘志远, 孙尚鹏, 白涛. 2/3匝线圈式纵磁触头大开距真空断路器分闸速度设计[J]. 电工技术学报, 0, (): 239626-239626. Ma Feiyue, Yao Xiaofei, Liu Zhiyuan, Sun Shangpeng, Bai Tao. Design of Opening Velocities for Large-Gap Vacuum Circuit Breakers with 2/3 Coil-Type Axial Magnetic Field Contacts. Transactions of China Electrotechnical Society, 0, (): 239626-239626.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.230608 https://dgjsxb.ces-transaction.com/CN/Y0/V/I/239626

[1] 王季梅. 真空开关技术与应用[M]. 北京: 机械工业出版社, 2008.
[2] 刘志远, 耿英三, 王季梅. 高电压真空断路器的技术进展[J]. 电气时代, 2008(1): 80-84.
[3] 王季梅, 苑舜. 大容量真空开关理论及其产品开发[M]. 西安: 西安交通大学出版社, 2001.
[4] Slade P G.The application of vacuum interrupters in HVDC circuit breakers[J]. IEEE Transactions on Plasma Science, 2022, 50(11): 4675-4682.
[5] 段雄英, 廖敏夫, 丁富华, 等. 基于真空断路器的并联电容器组相控投切装置[J]. 电工技术学报, 2007, 22(10): 78-84.
Duan Xiongying, Liao Minfu, Ding Fuhua, et al.Controlled vacuum circuit breaker for shunt capacitor banks[J]. Transactions of China Electrotechnical Society, 2007, 22(10): 78-84.
[6] 刘路辉, 庄劲武, 江壮贤, 等. 整流发电机出口断路器分析与设计[J]. 电工技术学报, 2014, 29(11): 147-153.
Liu Luhui, Zhuang Jinwu, Jiang Zhuangxian, et al.Analysis and design of a rectifier generator circuit breaker[J]. Transactions of China Electrotechnical Society, 2014, 29(11): 147-153.
[7] 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.
[8] 程显, 徐鹏飞, 葛国伟, 等. 机械式真空直流断路器弧后电流测量研究[J]. 电工技术学报, 2021, 36(16): 3516-3524.
Cheng Xian, Xu Pengfei, Ge Guowei, et al.Research on measurement of post-arc current of mechanical vacuum DC circuit breaker[J]. Transactions of China Electrotechnical Society, 2021, 36(16): 3516-3524.
[9] 修士新, 王季梅. 发展高电压等级真空断路器的技术问题探讨[J]. 真空电子技术, 1997(3): 1-7.
Xiu Shixin, Wang Jimei.A study on developing high voltage vacuum circuit breakers[J]. Vacuum Electronics, 1997(3): 1-7.
[10] Yao Xiaofei, Wang Jianhua, Ai Shaogui, et al.Vacuum switching technology for future of power systems[J]. Engineering, 2022, 13: 164-177.
[11] 董华军, 温超阳, 孙鹏, 等. 基于正交实验新型真空灭弧室触头磁场仿真与参数优化设计[J]. 电工技术学报, 2022, 37(21): 5598-5606.
Dong Huajun, Wen Chaoyang, Sun Peng, et al.Simulation and optimization of the contact magnetic field of a new type of vacuum interrupter based on orthogonal experiment[J]. Transactions of China Electrotechnical Society, 2022, 37(21): 5598-5606.
[12] 丁璨, 李江, 袁召, 等. 基于NSGA-Ⅱ和BP神经网络的杯状纵磁触头结构优化设计[J]. 电工技术学报, 2022, 37(23): 6074-6082.
Ding Can, Li Jiang, Yuan Zhao, et al.Structural optimization design of cup-shaped longitudinal magnetic contact based on NSGA-Ⅱ and BP neural network[J]. Transactions of China Electrotechnical Society, 2022, 37(23): 6074-6082.
[13] 王季梅, 程少勇, 刘志远. 论真空断路器向高电压等级发展需要研究的问题[J]. 电气技术, 2005(11): 43-46.
[14] Renz R.High voltage vacuum interrupters; technical and physical feasibility versus economical efficiency[C]//2006 International Symposium on Discharges and Electrical Insulation in Vacuum, Matsue, Japan, 2007: 257-262.
[15] Liu Zhiyuan, Wang Jimei, Xiu Shixin, et al.Development of high-voltage vacuum circuit breakers in China[J]. IEEE Transactions on Plasma Science, 2007, 35(4): 856-865.
[16] Zhang Yingyao, Yao Xiaofei, Liu Zhiyuan, et al.Axial magnetic field strength needed for a 126-kV single-break vacuum circuit breaker during asymmetrical current switching[J]. IEEE Transactions on Plasma Science, 2013, 41(8): 2034-2042.
[17] Miller H C.A review of anode phenomena in vacuum arcs[J]. Contributions to Plasma Physics, 1989, 29(3): 223-249.
[18] Miller H C.Discharge modes at the anode of a vacuum arc[J]. IEEE Transactions on Plasma Science, 1983, 11(3): 122-127.
[19] Miller H C.A review of anode phenomena in vacuum arcs[J]. IEEE Transactions on Plasma Science, 1985, 13(5): 242-252.
[20] 孔国威. 真空灭弧室阳极斑点临界电流与触头立体角和纵向磁感应强度的关系研究[D]. 西安: 西安交通大学, 2013.
[21] Schulman M B, Schellekens H.Visualization and characterization of high-current diffuse vacuum arcs on axial magnetic field contacts[J]. IEEE Transactions on Plasma Science, 2000, 28(2): 443-451.
[22] Sun Liqiong, Yu Li, Liu Zhiyuan, et al.An opening displacement curve characteristic determined by high-current anode phenomena of a vacuum interrupter[J]. IEEE Transactions on Power Delivery, 2013, 28(4): 2585-2593.
[23] 余砾. 高压等级真空断路器机械特性的优化设计[D]. 西安: 西安交通大学, 2011.
[24] Kusserow J, Renz R. Method for opening the contact gap of a vacuum interrupter: US7334319B2[P].2008-02-26.
[25] 艾绍贵, 姚晓飞, 史雯, 等. 快速真空断路器分闸速度对短路电流开断燃弧时间窗口的影响[J]. 高压电器, 2020, 56(5): 8-12.
Ai Shaogui, Yao Xiaofei, Shi Wen, et al.Influence of opening velocity on short-circuit current interruption arcing time windows of a fast vacuum circuit breaker[J]. High Voltage Apparatus, 2020, 56(5): 8-12.
[26] Yao Xiaofei, Guan Chen, Ding Jian'gang, et al. Controlled fast vacuum breaking of an AC short-circuit current in a short-arcing time[J]. IEEE Transactions on Applied Superconductivity, 2021, 31(8): 1-5.
[27] Zhang Bojian, Ren Li, Ding Jian'gang, et al. A relationship between minimum arcing interrupting capability and opening velocity of vacuum interrupters in short-circuit current interruption[J]. IEEE Transactions on Power Delivery, 2018, 33(6): 2822-2828.
[28] Guan Chen, Yao Xiaofei, Chen Xinggui, et al.Design and short-circuit current breaking test verification of a 72.5 kV single-break fast vacuum circuit breaker[J]. IET Generation, Transmission & Distribution, 2022, 16(11): 2276-2286.
[29] Guan Chen, Ding Jiangang, Yao Xiaofei, et al.Study on short-circuit current interruption characteristics of Double-break fast vacuum circuit breaker within the minimum arcing time[J]. International Journal of Electrical Power & Energy Systems, 2023, 147: 108865.
[30] Yao Xiaofei, Guan Chen, Wang Jianhua, et al.Optimizing the opening velocity for a vacuum circuit breaker with cup-type axial magnetic field contacts[J]. IEEE Transactions on Plasma Science, 2021, 49(5): 1636-1647.