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Impact of smart subtransmission level fault current mitigation solutions on service reliability

机译：智能子传输级故障电流缓解解决方案对服务可靠性的影响

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摘要

Superconductive fault current limiters and substation automation systems are two major smart grid technologies that can be directly or indirectly used for mitigation of high fault current levels at subtransmission systems. In comparison to the other conventional fault current mitigation solutions, it is expected that these solutions have much less negative impacts on the service reliability. This paper aims to quantitatively evaluate how these smart fault current mitigation solutions may affect the major attributes of the service reliability. Sustained interruptions, momentary interruptions and voltage sags are considered as major events that might appear in the electricity service of the customers due to a typical short circuit fault on the subtransmission systems. A typical Finnish subtransmission system is utilized in this paper for directing the quantitative reliability case studies. The study results show that in addition to the fault current mitigation aspects of the targeted solutions, their possible impacts on the service reliability should also be taken into account.
机译：超导故障限流器和变电站自动化系统是两项主要的智能电网技术，可以直接或间接用于缓解变电站高故障电流水平。与其他传统的故障电流缓解解决方案相比，预计这些解决方案对服务可靠性的负面影响要小得多。本文旨在定量评估这些智能故障电流缓解解决方案如何影响服务可靠性的主要属性。持续的中断，瞬时中断和电压骤降被认为是主要的事件，由于子传输系统上的典型短路故障，可能会在客户的电力服务中出现。本文采用了典型的芬兰子传输系统来指导定量可靠性案例研究。研究结果表明，除了目标解决方案的故障电流缓解方面之外，还应考虑其对服务可靠性的可能影响。

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