Impact of Fault Current Limiter on VSC-HVDC DC Protection
Impact of Fault Current Limiter on VSC-HVDC DC Protection
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DOI：
10.1049/cp.2016.0426
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Bin Chang;O. Cwikowski;X. Pei;M. Barnes;R. Shuttleworth;Alexander C. Smith
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文献类型：
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作者：
Bin Chang;O. Cwikowski;X. Pei;M. Barnes;R. Shuttleworth;Alexander C. Smith
多端电压源型换流器(VSC)高压直流输电有望在未来电网中发挥关键作用。与交流输电相比，直流输电由于采用了较低的直流侧阻抗和敏感的电力电子设备，因此更容易发生故障。在建立任何多端VSC-HVDC电网之前，必须解决直流保护问题。在直流保护方面，除了使用直流断路器来中断和隔离直流故障外，还可以使用故障限流器(FCL)来限制故障电流。FCL可能会成为未来任何直流保护系统的重要组成部分。本文就是针对这样一种FCL进行研究的。本文的主要贡献在于，在高保真的四端VSC-HVDC系统模型中，对阻性超导限流器(SCFCL)进行了详细的建模，以实现ABB混合式断路器的直流保护。仿真结果表明，SCFCL在直流保护中具有很大的应用潜力。
Multi-terminal Voltage-Sourced Converter (VSC) High Voltage Direct Current (HVDC) transmission is expected to play a key role in future power transmission grids. Compared with AC transmission, DC transmission is more vulnerable to faults due to the lower DC side impedances and sensitive power electronics used in the converters. DC protection issues must be solved before any multi-terminal VSC-HVDC grid can be established. In terms of DC protection, apart from using a DC circuit breaker to interrupt and isolate a DC fault, a Fault Current Limiter (FCL) may be employed to limit the fault current. FCLs could potentially form an important part of any future DC protection system. This paper investigates such a FCL. The main contribution of this paper is that, the resistive type superconducting FCL (SCFCL) is modelled in detail to perform DC protection with the ABB hybrid circuit breaker, in a high fidelity four-terminal VSC-HVDC system model. The simulation results show that the SCFCL has great potential to be employed for DC protection.