A Novel Model of HVDC Hybrid-Type Superconducting Circuit Breaker and Its Performance Analysis for Limiting and Breaking DC Fault Currents
A Novel Model of HVDC Hybrid-Type Superconducting Circuit Breaker and Its Performance Analysis for Limiting and Breaking DC Fault Currents
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DOI：
10.1109/tasc.2015.2477373
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发表时间：
2015-09
影响因子：
1.8
通讯作者：
Umer Amir Khan;Jong-Geon Lee;Faisal Amir;Bang-wook Lee
中科院分区：
文献类型：
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作者：
Umer Amir Khan;Jong-Geon Lee;Faisal Amir;Bang-wook Lee
高压直流（HVDC）点对点网络并入网状多端HVDC网络（MTDC）的关键障碍是缺少直流断路器（DCCB），其能够及时可靠地将故障HVDC网络与MTDC隔离。提出了一种新的混合型超导DCCB模型（SDCCB）。SDCCB在主线路中有一个超导故障限流器（SFCL），用于限制故障电流，直到向SDCCB发出最终跳闸信号。跳闸信号发出后，位于主线路中的绝缘栅双极晶体管（IGBT）开关将故障电流分流到并联线路中，在并联线路中，IGBT和电涌放电器的组合将直流电流强制为零。介绍了MTDC中直流故障电流的特性和DCCB对MTDC的基本要求，并对SDCCB的工作原理进行了说明。为了证明SDCCB的可行性，仿真分析表明SDCCB电流中断性能进行了改变直流故障电流的强度。据观察，SFCL的被动限流引起SDCCB的故障电流开断应力显着降低。此外，SFCL的基本设计要求，包括SFCL的失超阻抗的SFCL额定电压和能量耗散能力的影响，进行了研究。最后，强调了SDCCB的优点和局限性。
The key obstacle in integrating high-voltage direct current (HVDC) point-to-point networks into meshed multiterminal HVDC networks (MTDC) is the absence of dc circuit breakers (DCCBs), which can timely and reliably isolate the faulty HVDC network from the MTDC. In this paper, a novel hybrid-type superconducting DCCB model (SDCCB) is proposed. The SDCCB has a superconducting fault current limiter (SFCL) located in the main line, to limit the fault current until the final trip signal to the SDCCB is given. After the trip signal, insulated-gate bipolar transistor (IGBT) switches located in the main line will commutate the fault current into a parallel line, where dc current is forced to zero by combination of IGBTs and surge arresters. DC fault current behavior in MTDC and fundamental requirements of DCCB for MTDC were described, followed by an explanation of the working principles of the SDCCB. To prove the viability of the SDCCB, a simulation analysis demonstrating SDCCB current interruption performance was done for changing the intensity of dc fault current. It was observed that the passive current limiting by SFCL caused significant reduction in fault current interruption stress for SDCCB. Furthermore, fundamental design requirements for SFCL, including the effect of SFCL quenching impedance on SFCL voltage rating and energy dissipation capacity, were investigated. Finally, advantages and limitations of the SDCCB were highlighted.