IED Process Bus Switch Configuration via Multicast Filtering Simulation
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Solution Overview
Problem
Current methods for configuring Ethernet switches in process bus networks for Intelligent Electronic Devices (IEDs) in electrical substation automation systems are complex, time-consuming, and prone to errors due to the need for manual setup of Multicast Filtering White Lists, which are not adequately supported by existing tools like Substation Configuration Language (.SCL) files that lack communication network topology and bandwidth information.
Innovation Solution
A method and system for configuring IED process bus network switches by calculating and generating Multicast Filtering rules based on substation topology, traffic demand, and destination MAC addresses, using a data processor and memory to simulate the network and translate rules into compatible formats for various switch manufacturers, thereby reducing human intervention and ensuring accurate traffic policing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual configuration of Multicast Filtering White Lists is performed, then configuration accuracy can be achieved, but the process becomes complex and time-consuming
Solution Approach 1:
The system performs preliminary simulation of the process bus network to pre-calculate all necessary Multicast Filtering White List entries before actual switch configuration. This includes simulating traffic flows, identifying all multicast groups, and generating the complete filtering rule set in advance, thereby eliminating time-consuming manual configuration while ensuring accuracy through automated calculation based on the simulated network state
Solution Approach 2:
An intermediary simulation environment is introduced between the network topology specification and the actual switch configuration. This simulation layer automatically translates topology requirements into precise Multicast Filtering White List rules, serving as a mediator that converts high-level network design into low-level configuration parameters without requiring manual intervention, thus achieving both accuracy and efficiency
2Adaptability or versatility
If existing configuration tools like .SCL files are used, then standardization is maintained, but they lack communication network topology and bandwidth information
Solution Approach 1:
The system merges the standardized .SCL file format with additional network topology and bandwidth information that traditionally was separate. By integrating process bus network specifications, traffic flow requirements, and bandwidth constraints directly into the configuration workflow alongside IED descriptions, the system maintains IEC 61850 standardization while eliminating information loss through unified data structure that contains both device and network layer information
Solution Approach 2:
The configuration system is designed with multi-functionality to handle both traditional IED configuration tasks and network topology simulation in a single integrated platform. It can process .SCL files for device configuration while simultaneously simulating process bus networks, calculating traffic flows, and generating Multicast Filtering rules, thereby maintaining standardization benefits while adding comprehensive network awareness through a universal tool that performs multiple functions
3Productivity
If multicast filtering is applied to reduce traffic, then network performance improves, but configuration complexity increases
Solution Approach 1:
The system implements self-service by automatically generating Multicast Filtering White List configurations based on simulated network traffic patterns. Instead of requiring operators to manually analyze traffic flows and create filtering rules, the simulation automatically identifies all multicast groups, calculates required filtering entries, and produces ready-to-import configuration files, thereby achieving network performance improvement through filtering while eliminating configuration complexity through automation
Solution Approach 2:
The manual mechanical process of configuring multicast filters is replaced with an automated computational system. The simulation environment programmatically analyzes network topology, generates traffic flow matrices, and automatically creates Multicast Filtering White List configurations without manual intervention. This substitution of manual configuration mechanics with automated computational mechanics achieves both performance improvement through proper filtering and complexity reduction through elimination of manual steps
4Reliability
If traffic partitioning is implemented, then deterministic network behavior is achieved, but the setup process becomes more complex
Solution Approach 1:
The system performs preliminary simulation of the entire process bus network to pre-determine all traffic partitioning requirements before actual deployment. By simulating network behavior, identifying all traffic flows, and pre-calculating the complete set of Multicast Filtering rules needed for deterministic behavior, the system establishes the traffic partitioning framework in advance through automated calculation rather than complex manual setup, achieving reliability through proper partitioning while reducing setup complexity through automation
Data Source
AI summary
Method and system arranged for configuring Intelligent Electronic Device, IED, process bus network switches from a substation specification according to IEC 61850 standard, said method comprising: calculating, from a substation topology file and from control function and substation bay library files, a Substation Specification Description file and substation traffic demand flow files comprising a GOOSE message profile subscription file and a Sampled Values message profile subscription file; generating destination MAC addresses; simulating the process bus communication network using said substation traffic demand flow files and process bus communication network topology, said topology comprising said process bus network switches, respective links and IED links; calculating the shortest path between each publisher IED and each subscriber IED; calculating a switch multicast filtering rule file, for each switch output port, comprising a multicast filter rule that allows the calculated shortest paths; translating the filtering rule file into a file acceptable by the switch.