A Novel Design Method of Saturated Core Type HVDC System Fault Current Limiter Considering the Leakage Effect of Permanent Magnet
Zhou Hang1, Yuan Jiaxin1, Chen Fan1, Zhang Zhaoyang1, Hu Hongjiao2
1. School of Electrical Engineering and Automation Wuhan University Wuhan 430072 China; 2. Enshi Power Supply Company State Grid Hubei Electric Power Co. Ltd Enshi 445000 China
Abstract:The extremely fast rising speed of the fault current in modern HVDC system has always been a big threat to both operating devices and system. Permanent magnet biased saturated core type fault current limiter is a promising way to limit the fault current of HVDC system by inserting an automatically changed inductor. However, the existing calculation and design process neglects the leakage effect caused by permanent magnet, resulting in a compromised accuracy. A precise design method, therefore, is necessary. In this study, a novel design and calculation method based on the high order Maclaurin approximation segment fitting strategy of the magnetic conductance was proposed, which considered the leakage effect of the permanent magnet. In this case, a more precise design method can be derived for this kind of electric facility. Firstly, different parts of magnetic conductance were calculated, then the magnetic conductance matrix was reconstructed. Finally, inductance value as well as relevant parameters can be obtained. Simulations based on finite element analysis and experiment results verified that compared with traditional method, proposed method can have about 20% increase in accuracy, while the calculation time can be greatly reduced. The proposed method is suitable in practical facility design procedure.
周航, 袁佳歆, 陈凡, 张朝阳, 胡红娇. 计及永磁体漏磁效应的磁饱和型高压直流限流器设计方法[J]. 电工技术学报, 2021, 36(9): 1956-1966.
Zhou Hang, Yuan Jiaxin, Chen Fan, Zhang Zhaoyang, Hu Hongjiao. A Novel Design Method of Saturated Core Type HVDC System Fault Current Limiter Considering the Leakage Effect of Permanent Magnet. Transactions of China Electrotechnical Society, 2021, 36(9): 1956-1966.
[1] 周光阳, 李妍, 何大瑞, 等. 含限流器的多端柔直系统故障保护策略[J]. 电工技术学报, 2020, 35(7): 1432-1443. Zhou Guangyang, Li Yan, He Darui, et al.Protection scheme for VSC-MTDC system with fault current limiter[J]. Transactions of China Electrotechnical Society, 2020, 35(7): 1432-1443. [2] 赵成勇, 宋冰倩, 许建中. 柔性直流电网故障电流主动控制典型方案综述[J]. 电力系统自动化, 2020, 44(5): 3-13. Zhao Chengyong, Song Bingqian, Xu Jianzhong.Overview on typical schemes for active control of fault current in flexible DC grid[J]. Automation of Electric Power Systems, 2020, 44(5): 3-13. [3] 范志华, 苗世洪, 刘子文, 等. 模块化多电平换流器子模块故障特性分析与解耦控制策略[J]. 电工技术学报, 2018, 33(16): 3707-3718. Fan Zhihua, Miao Shihong, Liu Ziwen, et al.Modular multilevel converter sub-module fault characteristics analysis and decoupling control strategy[J]. Transactions of China Electrotechnical Society, 2018, 33(16): 3707-3718. [4] 蔡洋, 郭文勇, 赵闯, 等. 模块化多电平换流器直流故障过电流精确计算与分析[J]. 电工技术学报, 2021, 36(07): 1526-1536. Cai Yang, Guo Wenyong, Zhao Chuang, et al.The accurate calculation and analysis of overcurrent under modular multilevel converter DC fault[J]. Transactions of China Electrotechnical Society, 2021, 36(7): 1526-1536. [5] 郝鑫, 王盼宝, 孙红梅, 等. 直流故障限流器工作原理分析与特性研究[J]. 电网技术, 2019, 43(12): 4414-4424. Hao Xin, Wang Panbao, Sun Hongmei, et al.Principle and characteristic analysis of existing DC fault current limiters[J]. Power System Technology, 2019, 43(12): 4414-4424. [6] 王建华, 项彬, 杨騉, 等. 超导限流直流开断技术研究[J]. 电工技术学报, 2019, 34(20): 4196-4207. Wang Jianhua, Xiang Bin, Yang Kun, et al.Superconducting fault current limiting DC current interrupting technology[J]. Transactions of China Electrotechnical Society, 2019, 34(20): 4196-4207. [7] 涂春鸣, 李庆, 郭祺, 等. 桥式限流与动态电压恢复器融合设计及控制方法[J]. 电工技术学报, 2020, 35(20): 4384-4396. Tu Chunming, Li Qing, Guo Qi, et al.Fusion design and control method of bridge current limiter and dynamic voltage restorer[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4384-4396. [8] 李承昱, 李帅, 赵成勇, 等. 适用于直流电网的限流混合式直流断路器[J]. 中国电机工程学报, 2017, 37(24): 7154-7162. Li Chengyu, Li Shuai, Zhao Chengyong, et al.A novel topology of current-limiting hybrid DC circuit breaker for DC grid[J]. Proceedings of the CSEE, 2017, 37(24): 7154-7162. [9] 刘清峰, 邱清泉, 张志丰, 等. 分裂电抗型超导限流器的交直流限流特性[J]. 高电压技术, 2018, 44(2): 456-462. Liu Qingfeng, Qiu Qingquan, Zhang Zhifeng, et al.AC/DC current limiting characteristics of the divisive reactance type superconducting fault current limiter[J]. High Voltage Engineering, 2018, 44(2): 456-462. [10] 张立晖, 石晶, 严思念, 等. 磁通约束型超导限流开关系统应用[J]. 电工技术学报, 2018, 33(22): 5292-5299. Zhang Lihui, Shi Jing, Yan Sinian, et al.System application of flux-coupling superconducting fault current limiting switch[J]. Transactions of China Electrotechnical Society, 2018, 33(22): 5292-5299. [11] 唐诵, 贾冠龙, 张成浩, 等. 适用于直流电网的预限流型直流断路器拓扑[J]. 电力系统自动化, 2020, 44(11): 152-162. Tang Song, Jia Guanlong, Zhang Chenghao, et al.Topology of DC circuit breaker with pre-current-limiting capability for DC grid[J]. Automation of Electric Power Systems, 2020, 44(11):152-162. [12] Yuan Jiaxin, Zhou Hang, Gan Pengcheng, et al.A novel concept of fault current limiter based on saturable core in high voltage DC transmission system[J]. AIP Advances, 2018, 8(5): 056636. [13] Li Botong, Jing Fangjie, Li Bin, et al.Study of the application of active saturated iron-core superconductive fault current limiters in the VSC-HVDC system[J]. IEEE Transactions on Applied Superconductivity, 2018, 28(4): 1-6. [14] Zhou Hang, Yuan Jiaxin, Chen Fan, et al.Performance investigation on a novel high inductance changing ratio MMC-based direct current system saturated core FCL[J]. IEEE Transactions on Power Delivery, 2020, 35(3): 1502-1514. [15] Dao V Q, Lee J, Kim C S, et al.Conceptual design of a saturated iron-core superconducting fault current limiter for a DC power system[J]. IEEE Transactions on Applied Superconductivity, 2020, 30(4): 1-5. [16] Ahmadvand Mohammad, Khanabdal Saheb, Hagh Mehrdad Tarafdar.A novel three phase saturable-core fault current limiter structure[J]. IEEE Transactions on Power Delivery, 2019, 34(2): 410-419. [17] 宋萌, 林哲侃, 罗运松, 等. 基于ANSYS的饱和铁心型限流器建模与仿真[J]. 广东电力, 2019, 32(4): 55-61. Song Meng, Lin Zhekan, Luo Yunsong, et al.Modeling and simulation of saturated iron core fault current limiter based on Ansys[J]. Guangdong Electric Power, 2019, 32(4): 55-61. [18] Vilhena Nuno, Arsenio Pedro, Murta-Pina Joao, et al.A methodology for modeling and simulation of saturated cores fault current limiters[J]. IEEE Transactions on Applied Superconductivity, 2015, 25(3): 5600704. [19] Eladawy Mohamed, Tarhuni Naser J, Metwally Ibrahim A.Transient dynamic analyses of presaturated core fault current limiters through flux and inductance versus current modelling[J]. IET Electric Power Applications, 2019, 13(9): 1263-1272. [20] Li Bin, Wang Changqi, Hong Wei, et al.Modelling of the DC Inductive superconducting fault current limiter[J]. IEEE Transactions on Applied Superconductivity, 2020, 30(4): 1-5. [21] 陈柏超, 魏亮亮, 雷洋, 等. 饱和铁心型桥式故障限流器的性能参数设计与实验[J]. 电工技术学报, 2017, 32(13): 185-193. Chen Baichao, Wei Liangliang, Lei Yang, et al.Performance parameter design and experiment of the bridge-type saturated core fault current limiter[J]. Transactions of China Electrotechnical Society, 2017, 32(13): 185-193. [22] Yuan Jiaxin, Zhang Zhewei, Zhou Hang, et al.Optimized design method of permanent magnets saturated core fault current limiters for HVDC applications[J]. IEEE Transactions on Power Delivery, 2021, 36(2): 721-730.