Substation Configuration Tool in Engineering Base
Efficient description of digital substations according to IEC 61850-6
Overview of advantages:
1) No redundant data entry and maintenance
2) More consistency, fewer errors
3) Only one system configuration tool
4) Transfer of SSD data into IEC 61850-compliant plant configuration at any time
5) Automated IID file creation, simpler configuration
Security of investment
Substations for the distribution of electrical power contain numerous devices such as control and protection systems. They must communicate with each other in order to coordinate the switching operations in the plants. The accompanying comprehensive IEC standard 61850 is the consequence of digitizing the industry with increasing intelligence and complexity in today’s substations. In addition to the uniform description of the plant structure, the standard also determines the type of communication in order to increase plant availability. The decisive factor is the IEC specification for a manufacturer-neutral description of a plant. For example, according to IEC 61850-6, the description of the configuration and the structures of the protection and control technology in digital substations should be carried out in the SCL format (Substation Configuration Language). Thus, the standard introduces an effective and unique feature for the area of substation automation (SA). However, conventional engineering tools are still having difficulty supporting the IEC properly and efficiently. This concerns both the structuring of the plants and the understanding of the neutral SCL. Currently, manufacturer-specific tools are used to engineer an SA system, each covering only a specific system level. As a result, designers have to “juggle” with a variety of tools and waste a lot of time on data entry and translation between the tools.
The communication standard IEC 61850 promises to simplify this process. With its object-oriented data model and formal description language, it supports reusability, component interoperability, and a consistent engineering process. The Substation Configuration Tool (SCT) from H&S is the consistent implementation of the IEC 61850 requirement for a manufacturer-neutral configuration tool based on SCL. From the graphical input of the primary technology to the modeling of abstract function nodes and data objects to the linking of plant model and system components, SCT generates the target system-independent configuration data for station control systems in compliance with the standard. This way, SCT enables integrated system engineering, and valuable data is archived securely for the future in a standardized format. In cooperation with H&S and AUCOTEC, SCT has been seamlessly integrated into the database-based platform Engineering Base (EB). The result: an optimal combination of electrotechnical planning and the standard-compliant description of the switchgear according to IEC 61850-6 in a user-friendly interface. This makes it easy to create single-line diagrams in EB. The synchronous coupling enables EB to transfer the plant model to the SCT. This creates the SSD file in the further workflow, which is synchronously assigned to the respective object in EB in the same work step. In addition, EB recognizes Intelligent Electronic Devices (IEDs) and is able to automatically generate the associated IID files (IEC Capability Description). The logical nodes of the individual devices are created in EB by simple graphical connection with the IEDs. By generating suitable instances of the data objects (e.g. XSWI, CSWI, CILO) the engineering platform can map the control and protection devices in the IEC 61850 range. Since all device information is contained in EB’s data model, the system can generate the IED’s IID file. Thanks to the coupling, the information is also seamlessly available for further processing in the SCT tool. There basic communication settings (e.g. IP addresses) and system configurations can be made.