一种阻感型电容换相混合式限流器
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摘要
采用半桥子模块的直流电网难以清除直流侧故障,直接采用直流断路器切断故障电流对于检测和断路设备都提出了严苛的要求。为此,该文提出一种适用于故障电流抑制的混合式故障限流器。该限流器利用限流电阻和限流电抗通过由晶闸管和换相电容组成的H桥电路实现限流过程。对所提限流器的工作原理、控制模式、电气应力和能量转移过程进行研究,并在4端直流电网中仿真验证。研究表明,所提限流器能够有效抑制电流增长,并具有较好的经济性,适用于高压直流输电的保护需求。
The traditional DC grid based on half-bridge modular multilevel converter(MMC) has difficulties in fault current clearance on DC side, thus it requires advanced technology of fault detection and dc circuit breakers(DCCB). In this paper, a novel topology of hybrid fault current limiter(hybrid FCL) suitable for current limiting was put forward. The proposed FCL use resistors and current limiting reactors to realize the current limiting process through a H-bridge circuit consisting of thyristors and commutation capacitor. The principle, control method, electrical stress and energy transformation process of the proposed FCL were studied and the FCL was verified in a 4 terminal DC grid. It is shown that the proposed FCL can satisfy the protection demand in HVDC with effective current limiting result and economic efficiency.
The traditional DC grid based on half-bridge modular multilevel converter(MMC) has difficulties in fault current clearance on DC side, thus it requires advanced technology of fault detection and dc circuit breakers(DCCB). In this paper, a novel topology of hybrid fault current limiter(hybrid FCL) suitable for current limiting was put forward. The proposed FCL use resistors and current limiting reactors to realize the current limiting process through a H-bridge circuit consisting of thyristors and commutation capacitor. The principle, control method, electrical stress and energy transformation process of the proposed FCL were studied and the FCL was verified in a 4 terminal DC grid. It is shown that the proposed FCL can satisfy the protection demand in HVDC with effective current limiting result and economic efficiency.
引文
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[15]Zou Lin,Huang Zhihui,Wang Song,et al.Simulation on the overvoltage of 500k V fault current limiter based on fault current capture technology[C]//2017 4th International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST).Xi'an,China:IEEE,2017:505-508.
[16]Keshavarzi D,Farjah E,Ghanbari T.Hybrid DC circuit breaker and fault current limiter with optional interruption capability[J].IEEE Transactions on Power Electronics,2018,33(3):2330-2338.
[17]周万迪,魏晓光,高冲,等.基于晶闸管的混合型无弧高压直流断路器[J].中国电机工程学报,2014,34(18):2990-2996.Zhou Wandi,Wei Xiaoguang,Gao Chong,et al.Thyristor based hybrid arc-less high voltage direct current circuit breaker[J].Proceedings of the CSEE,2014,34(18):2990-2996(in Chinese).
[18]高阳,贺之渊,王成昊,等.一种新型混合式直流断路器[J].电网技术,2016,40(5):1320-1325.Gao Yang,He Zhiyuan,Wang Chenghao,et al.A new hybrid circuit breaker for DC-application[J].Power System Technology,2016,40(5):1320-1325(in Chinese).
[19]Hassanpoor A,H?fner J,Jacobson B.Technical assessment of load commutation switch in hybrid HVDCbreaker[J].IEEE Transactions on Power Electronics,2015,30(10):5393-5400.
[2]汤广福,罗湘,魏晓光.多端直流输电与直流电网技术[J].中国电机工程学报,2013,33(10):8-17.Tang Guangfu,Luo Xiang,Wei Xiaoguang.Multi-terminal HVDC and DC-grid technology[J].Proceedings of the CSEE,2013,33(10):8-17(in Chinese).
[3]徐政.柔性直流输电系统[M].2版.北京:机械工业出版社,2016.Xu Zheng.Voltage source converter based HVDCtransmission system[M].2nd Edition.Beijing:China Machine Press,2016(in Chinese).
[4]王姗姗,周孝信,汤广福,等.模块化多电平换流器HVDC直流双极短路子模块过电流分析[J].中国电机工程学报,2011,31(1):1-7.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Analysis of submodule overcurrent caused by DCpole-to-pole fault in modular multilevel converter HVDCsystem[J].Proceedings of the CSEE,2011,31(1):1-7(in Chinese).
[5]Li Chengyu,Zhao Chengyong,Xu Jianzhong,et al.Apole-to-pole short-circuit fault current calculation method for DC grids[J].IEEE Transactions on Power Systems,2017,32(6):4943-4953.
[6]Xia Dong,Qiu Qingquan,Zhang Zhifeng,et al.Magnetic field and characteristic analysis of the superconducting fault current limiter for DC applications[J].IEEETransactions on Applied Superconductivity,2018,28(3):5601405.
[7]Jangale M,Thakur K D.Optimum positioning of superconducting fault current limiter for wind farm fault current in smart grid[C]//2017 International conference of Electronics,Communication and Aerospace Technology(ICECA).Coimbatore:IEEE,2017:312-316.
[8]Ma Tao,Dai Shaotao,Song Meng,et al.Electromagnetic design of high-temperature superconducting DC bias winding for single-phase 500kV saturated iron-core fault current limiter[J].IEEE Transactions on Applied Superconductivity,2018,28(3):5200805.
[9]Fereidouni A R,Vahidi B,Hosseini Mehr T.The impact of solid state fault current limiter on power network with wind-turbine power generation[J].IEEE Transactions on Smart Grid,2013,4(2):1188-1196.
[10]Radmanesh H,Fathi S H,Gharehpetian G B,et al.Bridge-type solid-state fault current limiter based on AC/DC reactor[J].IEEE Transactions on Power Delivery,2016,31(1):200-209.
[11]信赢.超导限流器综述[J].南方电网技术,2015,9(3):1-9.Xin Ying.Review on superconducting fault current limiters[J].Southern Power System Technology,2015,9(3):1-9(in Chinese).
[12]胡杰,王莉,穆建国.直流固态断路器现状及应用前景[J].电力系统保护与控制,2009,37(19):145-150.Hu Jie,Wang Li,Mu Jianguo.Present status of DCsolid-state circuit breaker and its potential application[J].Power System Protection and Control,2009,37(19):145-150(in Chinese).
[13]Nourmohamadi H,Nazari-Heris M,Sabahi M,et al.Anovel structure for bridge-type fault current limiter:capacitor-based nonsuperconducting FCL[J].IEEETransactions on Power Electronics,2018,33(4):3044-3051.
[14]Beheshtaein S,Savaghebi M,Cuzner R,et al.A Modified secondary-control based fault current limiter for four-wire three phase DGs[C]//Proceedings of the IEEETransactions on Industrial Electronics.Beijing,China:IEEE,2017:2363-2368.
[15]Zou Lin,Huang Zhihui,Wang Song,et al.Simulation on the overvoltage of 500k V fault current limiter based on fault current capture technology[C]//2017 4th International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST).Xi'an,China:IEEE,2017:505-508.
[16]Keshavarzi D,Farjah E,Ghanbari T.Hybrid DC circuit breaker and fault current limiter with optional interruption capability[J].IEEE Transactions on Power Electronics,2018,33(3):2330-2338.
[17]周万迪,魏晓光,高冲,等.基于晶闸管的混合型无弧高压直流断路器[J].中国电机工程学报,2014,34(18):2990-2996.Zhou Wandi,Wei Xiaoguang,Gao Chong,et al.Thyristor based hybrid arc-less high voltage direct current circuit breaker[J].Proceedings of the CSEE,2014,34(18):2990-2996(in Chinese).
[18]高阳,贺之渊,王成昊,等.一种新型混合式直流断路器[J].电网技术,2016,40(5):1320-1325.Gao Yang,He Zhiyuan,Wang Chenghao,et al.A new hybrid circuit breaker for DC-application[J].Power System Technology,2016,40(5):1320-1325(in Chinese).
[19]Hassanpoor A,H?fner J,Jacobson B.Technical assessment of load commutation switch in hybrid HVDCbreaker[J].IEEE Transactions on Power Electronics,2015,30(10):5393-5400.