Investigation of Wireless IEC 61850 MMS using Raspberry Pi

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Sungho Hwang

Abstract

IEC 61850, a smart grid standard, uses Ethernet to perform standardized information exchange. However, if wireless LAN techniques rather than Ethernet are applied, it enables lower installation cost, sufficient communication speed, and easy arrangement. In this paper, the experiment platform of substation automation based on IEC 61850 MMS is fabricated using wireless LAN. To utilize a wireless LAN, the access point is materialized using a low-cost Raspberry Pi. Libiec61850 software is used for MMS communication between substation Intelligent Electronic Devices (IEDs) at the experiment platform. IEEE 1588 was used for synchronization between Raspberry Pis, and an MMS packet is captured and analyzed through Wireshark for analyzing the results. The transfer time measurement was performed to identify whether the wireless IEC 61850 MMS traffic produced herein satisfy performance requirements depending on the IEC 61850 message type. On the basis of the results, the transfer time of IEC 61850 MMS traffic herein was confirmed to meet IEC 61850 performance requirements.

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