Research on Parameters of DC Switch Oscillation Circuit Based on Arc Model
Yu Lei1, Li Jinbin2, Yuan Jiaxin3, Wang Yifan3, Jiang Ziwei3, Li Jiawei1
1. State Grid Hubei Direct Current Company Yichang 443000 China; 2. State Grid Hubei Electric Power Research Institute Wuhan 430077 China; 3. School of Electrical Engineering and Automation Wuhan University Wuhan 430072 China
Abstract The DC transfer switch is an essential piece of equipment in ultra-high voltage DC transmission projects. It is mainly used to increase the flexibility of transmission operations and to protect and remove faults. The DC transfer switch is composed of three parts: the breaking circuit, energy absorption circuit, and oscillation circuit. The oscillation circuit creates a “zero-crossing point” by providing oscillation current during the DC switch breaking process. The oscillation process plays a decisive role in the successful breaking or not. Therefore, it is urgent to study the influence of oscillation circuit parameters on the breaking. The parameters of capacitors in the oscillation circuit are affected by manufacturing, transportation, use, and other processes, which may result in initial type faults, occasional faults, overload operation faults, and aging operation faults. A fault can cause a change in the capacitance value, which may cause the DC switch to fail to open. The existing research has not yet considered the parasitic parameters of the oscillation circuit based on the arc characteristics of the breaking circuit, which has limitations such as parameter mismatch and low accuracy. Moreover, there is limited research on various arc models applicable to DC conversion switches. This article first analyzes in detail the principles and characteristics of various arc models. Then, based on the parameters of a certain ultra-high voltage DC transmission system, an improved model with equivalent multi-capacitor combination and parasitic parameters is constructed to improve the accuracy of the oscillating circuit model. Next, simulation research on the improved oscillating circuit model is carried out based on the Simulink simulation platform, and the characteristics of the oscillating circuit itself are also experimentally studied on site. The theoretical calculation results, simulation results and experimental results are compared and analyzed to verify the correctness of the model. Subsequently, the equivalent arc model of the breaking circuit is theoretically studied, and the working results of the DC switch under different arc models are compared by simulation. Finally, in order to simulate possible situations on site, the influence mechanism of oscillating circuit parameters on the breaking process is further studied in depth under normal and fault conditions. and the following conclusions were drawn: (1) The error between theoretical calculation values, transient simulation results, and oscillation characteristics experimental results is relatively small, which verifies the effectiveness of the improved model of equivalent multi capacitor combination with parasitic parameters. (2) The modeling of DC switches cannot ignore the arc model, and the application of the Mayr arc model can accurately and efficiently simulate the changes in arc characteristics during the breaking process of DC switches. (3) The parameters of the oscillation circuit have a significant impact on the breaking process, and excessive oscillation circuit resistance will prolong the arcing time, which is not conducive to breaking; Although some small capacitor faults can shorten the arcing time, they will accelerate the current change rate and increase the current amplitude several times. It is recommended to regularly inspect the oscillation circuit to ensure that the oscillation parameters are at a reasonable value.
Yu Lei,Li Jinbin,Yuan Jiaxin等. Research on Parameters of DC Switch Oscillation Circuit Based on Arc Model[J]. Transactions of China Electrotechnical Society, 2023, 38(zk1): 187-195.
[1] 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. [2] 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. [3] Wen Weijie, Huang Yulong, Sun Yinshan, et al.Research on current commutation measures for hybrid DC circuit breakers[J]. IEEE Transactions on Power Delivery, 2016, 31(4): 1456-1463. [4] 彭畅, 温家良, 马国华, 等. 特高压直流输电系统中直流转换开关的电流转换分析与仿真[J]. 中国电机工程学报, 2011, 31(36): 1-7, 236. Peng Chang, Wen Jialiang, Ma Guohua, et al.Analysis and simulation on current commutation of the DC transfer switches in UHVDC transmission systems[J]. Proceedings of the CSEE, 2011, 31(36): 1-7, 236. [5] 李兴文, 郭泽, 傅明利, 等. 高压直流转换开关电流转换特性及其影响因素[J]. 高电压技术, 2018, 44(9): 2856-2864. Li Xingwen, Guo Ze, Fu Mingli, et al.Current commutation characteristics and its influential factors for high-voltage direct current transfer switches[J]. High Voltage Engineering, 2018, 44(9): 2856-2864. [6] 吴宇. 三相变流器中直流母线电容的状态监测技术研究[D]. 重庆: 重庆大学, 2016. [7] 李劲彬, 童歆, 张致, 等. 基于改进电容模型的直流开关振荡回路参数计算方法[J]. 智慧电力, 2019, 47(4): 87-92, 117. Li Jinbin, Tong Xin, Zhang Zhi, et al.Calculation method of DC switch oscillation loop parameters based on improved capacitance model[J]. Smart Power, 2019, 47(4): 87-92, 117. [8] 刘俊峰, 高鹏举, 廖武兵, 等. 基于储能电容复用的超级电容阵列自均衡拓扑结构的分析[J]. 电工技术学报, 2021, 36(增刊1): 372-380. Liu Junfeng, Gao Pengju, Liao Wubing, et al.Analysis of voltage self-balancing topology of super-capacitor array based on reutilization of super-capacitors[J]. Transactions of China Electrotechnical Society, 2021, 36(S1): 372-380. [9] 苑长富. 超级电容器串并联变换技术研究[D]. 大连: 大连理工大学, 2016. [10] Amaral A M R, Marques C A J. A simple offline technique for evaluating the condition of aluminum-electrolytic-capacitors[J]. IEEE Transactions on Industrial Electronics, 2009, 56(8): 3230-3237. [11] 刘艳丽, 郭凤仪, 李磊, 等. 一种串联型故障电弧数学模型[J]. 电工技术学报, 2019, 34(14): 2901-2912. Liu Yanli, Guo Fengyi, Li Lei, et al.A kind of series fault arc mathematical model[J]. Transactions of China Electrotechnical Society, 2019, 34(14): 2901-2912. [12] 钟逸涵, 邓丰, 史鸿飞, 等. 基于动态电阻串联的高阻接地故障精确建模[J/OL].电工技术学报, 2023,DOI:10.19595/j.cnki.1000-6753.tces.230065. Zhong Yihan, Feng Deng, Shi Hongfei, et al.Accurate modeling of high impedance fault based on dynamic impedance series connection[J/OL]. Transactions of China Electrotechnical Society, 2023, DOI:10.19595/ j.cnki.1000-6753.tces.230065. [13] 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. [14] Andrea J, Bournat M, Landfried R,et al.Model of an electric arc for circuit analysis[C]//28th International Conference on Electric Contacts (ICEC), Edinburgh, 2016: 361-366. [15] 许晔, 郭谋发, 陈彬, 等. 配电网单相接地电弧建模及仿真分析研究[J]. 电力系统保护与控制, 2015, 43(7): 57-64. Xu Ye, Guo Moufa, Chen Bin, et al.Modeling and simulation analysis of arc in distribution network[J]. Power System Protection and Control, 2015, 43(7): 57-64. [16] 姜斌峰, 王莉. 低压交流电线故障电弧模型研究[J]. 电力系统及其自动化学报, 2009, 21(4): 20-24. Jiang Binfeng, Wang Li.Research on arc model in AC low-voltage electrical wire fault[J]. Proceedings of the Chinese Society of Universities for Electric Power System and Its Automation, 2009, 21(4): 20-24. [17] Li Shurong, Xue Yongduan, Feng Guang, et al.Simulation analysis of intermittent arc grounding fault applying with improved cybernetic arc model[J]. The Journal of Engineering, 2019(16): 3196-3201. [18] 尚振球. 麦也尔电弧数学模型的表达形式及其参数的确定方法[J]. 高压电器, 1985, 21(6): 40-45. Shang Zhenqiu.Expressions of O.Mayr’s mathematical model of electrical arc and the determination of their parameters[J]. High Voltage Apparatus, 1985, 21(6): 40-45. [19] Li Tian, Li Huawei.Simulation of electric arc characteristics based on MATLAB/simulink[J]. IOP Conference Series: Materials Science and Engineering, 2018, 452: 042080. [20] 杨明波, 龙毅, 樊三军, 等. 基于组合Mayr和Cassie电弧模型的弧光接地故障仿真及分析[J]. 电测与仪表, 2019, 56(10): 8-13. Yang Mingbo, Long Yi, Fan Sanjun, et al.Simulation and analysis of arc grounding fault based on combined Mayr and Cassie arc models[J]. Electrical Measurement & Instrumentation, 2019, 56(10): 8-13. [21] 李景丽, 袁豪, 徐铭铭, 等. 小电阻接地系统高阻接地故障检测技术综述[J]. 电测与仪表, 2023, 60(6): 10-18, 51. Li Jingli, Yuan Hao, Xu Mingming, et al.Overview of high impedance fault detection technology in small resistance grounding system[J]. Electrical Measurement & Instrumentation, 2023, 60(6): 10-18, 51. [22] Khan U A, Lee J G, Amir F, et al.A novel model of HVDC hybrid-type superconducting circuit breaker and its performance analysis for limiting and breaking DC fault currents[J]. IEEE Transactions on Applied Superconductivity, 2015, 25(6): 1-9. [23] 刘守豹, 侯玉成, 盛明珺, 等. 特高压直流换流站金属回线转换开关电磁暂态特性分析[J]. 电力自动化设备, 2021, 41(6): 220-226. Liu Shoubao, Hou Yucheng, Sheng Mingjun, et al.Analysis of electromagnetic transient characteristics of metallic return transfer breaker in UHVDC converter station[J]. Electric Power Automation Equipment, 2021, 41(6): 220-226. [24] 孙舒捷, 邰能灵, 薄志谦. 高压直流输电工程中的直流断路器设计及应用仿真[J]. 华东电力, 2009, 37(3): 412-417. Sun Shujie, Tai Nengling, Bo Zhiqian.Design and simulation of DC breakers for HVDC projects[J]. East China Electric Power, 2009, 37(3): 412-417.
2023, Vol. 38 
