Substation Switch Device GOOSE Packet Fault Detection
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Solution Overview
Problem
Conventional substation systems face inefficiencies in detecting failures in switch devices due to complex network structures, leading to longer recovery times and increased losses in power supply systems.
Innovation Solution
A switch device with modules for receiving and transmitting GOOSE packets, determining abnormal conditions, and generating confirmation requests and warning messages to quickly identify and isolate faulty devices, facilitating faster maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If maintenance staff manually check communication statuses of all switch devices one by one to find the cause of failure, then they can identify the faulty device, but the troubleshooting efficiency is poor and recovery time is long
Solution Approach 1:
The switch device performs preliminary actions by automatically generating abnormal condition event confirmation requests when GOOSE packet abnormalities are detected, and proactively sends queries to upstream switch devices before manual intervention is required. This preliminary automated detection and querying eliminates the need for manual checking of all switch devices, directly reducing recovery time while maintaining accurate fault identification.
2Quantity of substance
If the network structure of the substation is made complicated to accommodate more devices, then the system capacity increases, but the efficiency in troubleshooting decreases
Solution Approach 1:
The system implements automated feedback mechanisms where switch devices monitor GOOSE packet transmission and reception statuses, automatically generate abnormal condition events, send confirmation requests to upstream devices, and receive responses to identify faults. This automated feedback loop allows the system to scale to more devices without proportionally increasing troubleshooting complexity, as each device independently monitors and reports its status.
Solution Approach 2:
Each switch device performs self-service by automatically detecting abnormal conditions in received GOOSE packets, generating confirmation requests, querying upstream devices, and identifying faults without requiring manual intervention. This self-service capability enables the system to handle increased numbers of devices efficiently, as each device autonomously contributes to fault detection rather than requiring centralized manual checking.
3Measurement precision
If manual checking of all switch devices is performed to ensure accurate fault identification, then the fault detection is thorough, but the maintenance time increases
Solution Approach 1:
The system extracts the fault detection function from manual operations and implements it automatically through switch devices that monitor GOOSE packet transmission and reception. By extracting this function and automating it, the system maintains thorough fault identification accuracy while eliminating the time-consuming manual checking process, thereby improving maintenance efficiency.
4Speed
If the switch device automatically generates confirmation requests and sends queries to upstream devices, then the fault detection speed increases, but the device complexity increases
Solution Approach 1:
The switch device implements self-service by automatically generating abnormal condition event confirmation requests when GOOSE packet abnormalities are detected, and autonomously sending queries to upstream switch devices. This self-service capability enables rapid fault detection without requiring complex external monitoring systems, as each device independently performs detection and querying functions.
Data Source
AI summary
The present disclosure illustrates a switch device for substation and an error warning method thereof. The switch device accesses and copies a generic object oriented substation event (GOOSE) packet, and when the copied GOOSE packet is determined to trigger an abnormal condition event, the switch device generates and transmits an abnormal condition event confirmation request to an upstream switch device. A warning message is issued when a ready response cannot be received by the switch device from the upstream switch device. Therefore, the technical effect of quickly and accurately finding the switch device triggering the abnormal condition event first to facilitate repair may be achieved.