• Journal of IKEEE
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• v.18 no.1
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• pp.140-145
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• 2014

OPC UA(IEC62541) is a communication protocol for SG(Smart Grid) application platform. It was standardized by IEC TC57 group in December 2012. The IEC61850 has been used in Digital Substation Systems and Smart Distributed Systems. The DNP3.0 has been used for device's data collection/control in Distributed Systems. The DLMS/COSEM has been used to control metering and collect information in the Smart Metering. The top-level SG management platform needs an independent middleware to manage transparently the Power Information Technology, including the IEC61850, DNP3.0, DLMS/COSEM. In this paper, we propose the SDG(Scada Data Gateway) platform. It manages Power Information Technology based Digital Substation Systems and Smart Distributed systems, Smart Metering through OPC UA.

• The Journal of the Convergence on Culture Technology
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• v.10 no.6
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• pp.855-861
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• 2024

The power industry is undergoing a rapid transformation with the adoption of smart grid standards, advanced communication infrastructure, and new technologies for distributed power. MVDC (Medium Voltage Direct Current) technology plays a vital role in promoting efficient energy transmission and reducing greenhouse gas emissions, necessitating a structured architecture for stable management. This paper implements services defined in IEC 61850 and IEC 62541, defining a Virtual Manufacturing Device (VMD) to objectify the DTS (Digital Twin System). The VMD abstracts essential functions for control and monitoring, which are realized in DTS to enhance capabilities. The objectified DTS data facilitates server-client data exchange. Additionally, the proposed DTS-MS communication protocol defines transmitted data in JSON for remote access, providing node functionality for MVDC testing environments. The paper analyzes reference models for Digital Twin, proposes an Ethernet-based DTS architecture using international standards, and verifies the real-time performance improvements of the proposed system through mathematical simulations.