Fast and Reliable Sending of Generic Object Oriented Substation Event Frames between Remote Locations over Loss-Prone...

Area of Science:

• Electrical Engineering
• Computer Networking
• Power Systems

Background:

• Wide Area Monitoring Protection and Control (WAMPAC) systems are vital for stable electricity transmission grids.
• Phasor Measurement Units (PMUs) collect real-time data from substations.
• Generic Object Oriented Substation Events (GOOSE) protocol, via IEC 61850, facilitates critical command transmissions with strict delay and reliability needs.

Purpose of the Study:

• To propose and evaluate two novel methods for tunneling GOOSE frames over IP networks.
• To address limitations in existing methods like Routed-GOOSE and VX-GOOSE, particularly concerning data loss and delay.
• To enhance the flexibility, security, and reliability of WAMPAC communication.

Main Methods:

• Development of VX-GOOSE, utilizing standard protocols for tunneling GOOSE frames over UDP/IP.
• Introduction of Simplemux blast mode, featuring a new mechanism for guaranteed delivery and reduced latency.
• Experimental testing and performance analysis of both proposed methods under various network conditions.

Main Results:

• VX-GOOSE, similar to Routed-GOOSE, can experience GOOSE frame loss under certain network conditions, potentially impacting system stability.
• Simplemux blast mode demonstrates significant delay reduction over unreliable networks and provides delivery guarantees.
• Redundancy in Simplemux blast mode results in manageable bandwidth increases.

Conclusions:

• Standard IP tunneling for GOOSE frames presents reliability challenges.
• Simplemux blast mode offers a robust solution for low-delay, guaranteed delivery of critical substation communications.
• The proposed approach has broader applicability for other low-latency, high-reliability data flows.