Substation Automation Data Flow Visualization
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Solution Overview
Problem
In substation automation systems, analyzing data traffic and identifying message exchanges between Intelligent Electronic Devices (IEDs) is complex, especially in high and medium-voltage power networks, due to the vast amount of real-time critical data and the complexity of message flows, making it difficult to verify consistency, completeness, and correctness of data flow definitions.
Innovation Solution
A method and engineering tool that analyze data packets transmitted between Logical Nodes (LNs) of IEDs, identifying events and determining sender and receiver LNs, generating a time-sorted graphical representation of events, and grouping LNs by operational aspects to facilitate understanding and visualization of data flow, using a Substation Configuration Description (SCD) file for operational aspect retrieval and data object value comparison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data packets are analyzed and graphical representation is generated to visualize message exchanges, then ease of operation and understanding is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent creates a graphical copy or representation of the actual data packet exchanges between IEDs. Instead of directly analyzing raw data packets, the system generates visual models showing message flows, event sequences, and communication patterns. This graphical copy makes complex data traffic easily assessable while the processing complexity is confined to the background analysis engine.
Solution Approach 2:
The analysis tool acts as an intermediary between the raw data packets and the operator. It intercepts, analyzes, and transforms complex communication data into simplified graphical representations. This intermediary layer shields the operator from complexity while providing intuitive visualization of message exchanges and system behavior.
2Measurement precision
If all data packets are captured and analyzed in real-time, then measurement precision and completeness are improved, but loss of time and processing overhead increase
Solution Approach 1:
The system extracts only the essential and relevant information from the complete data packet stream for graphical representation. Instead of processing every single packet detail, it identifies and extracts key events, message types, and communication patterns that are most important for verification and diagnosis, reducing processing time while maintaining accuracy.
Solution Approach 2:
The patent applies partial action by focusing analysis on specific aspects of data flow that are most critical for verification (consistency, completeness, correctness). Rather than equally analyzing all data packets, it selectively processes packets based on their importance, message type, and relevance to the verification objectives, optimizing the balance between precision and time consumption.
3Loss of information
If detailed graphical representation with time sorting and grouping is generated, then information completeness and diagnostic capability are improved, but device complexity and computational requirements increase
Solution Approach 1:
The graphical representation is segmented into multiple organized dimensions: time-sorted sequences, event-type groupings, IED-specific views, and message-category classifications. This segmentation allows comprehensive information to be presented in an structured, manageable way that enhances diagnostic capability while the organization logic handles the complexity internally.
Solution Approach 2:
The patent adds multiple organizational dimensions to the graphical representation beyond simple linear display. Data packets are visualized across time dimensions, grouped by event types, categorized by message protocols, and organized by involved IEDs. These additional dimensions allow complete information to be conveyed through structured multi-faceted visualization rather than overwhelming single-view complexity.
Data Source
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AI summary
The present invention is concerned with a method and an engineering tool for analyzing a communication of secondary devices (205, 210) in a Substation Automation System (200) for a substation (100), wherein the secondary devices are connected to a communication network for controlling an industrial process, which industrial process comprises a plurality of operational aspects of primary devices, wherein sender secondary devices are configured to send data packets, which comprise a multitude of data objects, to predetermined receiver secondary devices via the communication network, wherein the data packets transmitted via the communication network are captured, a functional interrelation or operational aspect of the secondary devices and the primary devices is retrieved from an SCD-file (250) representing the formal configuration of the substation is retrieved, and the secondary devices are grouped according to the retrieved operational aspect and a time sorted graphical representation of the data objects, the secondary devices and the operational aspects is generated.