URLLC-Aided System Protection in Smart Electric Power Distribution Systems

Priya Raghuraman,Mesut E. Baran,Ismail Guvenc

2024 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS, ICC WORKSHOPS 2024（2024）

NC State Univ

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Abstract

The increasing integration of distributed energy resources (DER) in the electrical power grid poses several challenges in protection coordination. Several electric utilities have started looking into adopting communication to solve the electric grid protection challenges. This paper explores ultra-reliable low latency communication (URLLC) in 5G as a new promising alternative communication medium for wide area protection applications in a distribution system. The paper assesses if URLLC can meet the expected latency limits for mission-critical applications like wide-area protection in power distribution systems. In particular, the physical layer constraints are studied, such as the effect of physical layer numerology, signal-to-noise ratio (SNR), hybrid automatic repeat request (HARQ), and central frequency on communication latency. Realistic simulations are carried out in ns-3 to evaluate the performance of the communication network in a distribution grid with DER. Test results on a sample distribution system illustrate the feasibility of 5G URLLC to meet the stringent latency requirements of smart grid protection.

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Key words

5G,6G,latency,smart grid protection,URLLC

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【要点】：本文探讨了5G超可靠低延迟通信（URLLC）作为配电系统大范围保护应用的新兴通信媒介，评估了其是否满足电力分配系统中关键任务应用的预期延迟限制。

【方法】：通过研究物理层参数，如物理层 numerology、信噪比（SNR）、混合自动重传请求（HARQ）以及中心频率对通信延迟的影响，评估了URLLC的性能。

【实验】：在ns-3中进行了现实主义的模拟，以评估通信网络在具有分布式能源资源（DER）的配电电网中的表现。在样本配电系统上测试的结果表明，5G URLLC能够满足智能电网保护的严格延迟要求。