Abstract
The open-platform communication (OPC) unified architecture (UA) (IEC62541) is introduced as a key technology for realizing a variety of smart grid (SG) use cases enabling relevant automation and control tasks. The OPC UA can expand interoperability between power systems. The top-level SG management platform needs independent middleware to transparently manage the power information technology (IT) systems, including the IEC 61850. To expand interoperability between the power system for a large number of stakeholders and various standards, this paper focuses on the IEC 61850 for the digital substation. In this paper, we propose the interconnection method to integrate communication with OPC UA and convert OPC UA AddressSpace using system configuration description language (SCL) of IEC 61850. We implemented the mapping process for the verification of the interconnection method. The interconnection method in this paper can expand interoperability between power systems for OPC UA integration for various data structures in the smart grid.
Highlights
In the energy field, smart grids are a much-discussed topic
The abstract approach of the open-platform communication (OPC) unified architecture (UA) enables extensions of the application area, so the focus is on general data exchange within any domain, and it can be used for integrated automation concerns [3,4,5]
We focus on communication technology mappings of the IEC 61850 and introduce the OPC UA as an alternative way of communication based on the IEC 61850 model
Summary
Smart grids are a much-discussed topic. Many views on smart grids exist, which has led to many definitions of what is understood as a smart grid [1,2]. Interconnection modules between power IT and OPC UA in the top-level SG management system have to be developed to manage the supervisory control and data acquisition (SCADA) protocol [6,7,8]. In this contribution, we focus on communication technology mappings of the IEC 61850 and introduce the OPC UA as an alternative way of communication based on the IEC 61850 model. We designed mapping between OPC UA AddressSpace and IEC 61850 model information using UA’s. OPC UA AddressSpace, provided by OPC UA, is defined along with general information models based on object type. OPC UA clients [10]
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