Bridge-IED Routing GOOSE Messages Between Sub-Networks
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Solution Overview
Problem
Current substation IEDs lack the ability to route IEC 61850 GOOSE messages between multiple sub-networks, limiting the transmission of protection signals and binary/analog values across different sub-networks, which is essential for load shedding and plant protection applications.
Innovation Solution
A Bridge-IED with modular communication interfaces and signal mapping capabilities, configured using IEC 61850 standards, allows for routing GOOSE messages between sub-networks by filtering and rearranging signals across connected interfaces, similar to standard IEDs for GOOSE communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GOOSE messages are transmitted within a single sub-network using publisher-subscriber mechanism, then transmission speed and reliability are ensured, but the ability to route messages between multiple sub-networks is lost
Solution Approach 1:
The patent introduces a gateway device as an intermediary between sub-networks. This gateway receives GOOSE messages from one sub-network, processes them (including extracting GOOSE data from Ethernet packets and reconstructing messages), and forwards them to target sub-networks. This mediator enables inter-sub-network communication while preserving the reliability of individual sub-networks.
Solution Approach 2:
The system segments the overall communication network into multiple independent sub-networks, each maintaining its own publisher-subscriber GOOSE communication. The gateway operates at the boundary between segments, enabling controlled information exchange without compromising the integrity or performance of individual segments.
2Adaptability or versatility
If all IEDs are combined in one sub-network for GOOSE communication, then complete signal transmission is possible, but network complexity and loss of information increase
Solution Approach 1:
The gateway acts as an intelligent intermediary that selectively forwards GOOSE messages between sub-networks based on configuration. It processes Ethernet packets to extract GOOSE data, reconstructs messages with appropriate addressing, and forwards them only to relevant target sub-networks, preventing information loss while enabling comprehensive signal transmission across distributed networks.
3Device complexity
If standard IEDs with single Ethernet interface are used according to IEC 61850, then device simplicity is maintained, but redundancy and inter-sub-network communication capabilities are limited
Solution Approach 1:
The gateway device is designed as a multi-functional unit that performs multiple roles: it acts as an IED within its own sub-network, serves as a router between sub-networks, and provides redundancy coordination. This universal device consolidates multiple functions that would otherwise require separate components, enabling both redundancy and inter-sub-network communication without proportionally increasing overall system complexity.
Data Source
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AI summary
The invention refers to a Bridge-IED (Intelligent Electronic Device) to route IEC61850 GOOSE messages between sub-networks (SN_1, SN_2 ... SN_n), comprises a base functionality for signal mapping and more as one communication interfaces (Cl-1, Cl-2 ...Cl-n), wherein each is designed as IED with its own configurable CID-file according IEC 61850 requirement.