Synchrophasor Stream Splitter

The Synchrophasor Stream Splitter is a service-based software application designed to generate multiple real-time data streams from a single synchrophasor stream source. Developed primarily by the Grid Protection Alliance (GPA), it serves as a network proxy for Phasor Measurement Unit (PMU) data, solving a critical bandwidth and data-sharing problem in electrical power grids. Core Purpose and Use Cases

Bandwidth Optimization: Substation environments often operate with limited telemetry bandwidth. Instead of forcing a substation PMU to broadcast multiple separate streams over a restricted connection, it sends exactly one stream to the Stream Splitter. The Splitter duplicates and distributes that data to as many end clients or systems as necessary.

Data Transparency: The tool does not disaggregate or modify the internal points of the data packets. It acts as a transparent proxy, resending exactly what was received.

Multi-Client Routing: It allows multiple control centers, operational systems, and analytical tools (like openPDC) to access the exact same live grid data concurrently. Technical Specifications

Protocol Support: It supports all common frame-based industry protocols, including IEEE C37.118 (2011 and 2019 standards), IEC 61850-90-5, F-NET, BPA-FASTNET, SEL Fast Message, and Macrodyne.

Network Configurations: Fully supports combined variations of TCP, UDP, IPv4, and IPv6. For TCP proxies, it caches configuration frames and pushes them immediately upon new client requests. For UDP rebroadcasts, it automatically forces a configuration frame transfer once per minute if the source isn’t already doing so.

Remote Management: Active configurations can be downloaded, modified, and re-uploaded remotely via management tools. Data settings are stored cleanly in an XML format. Versions and Availability

Open Source Edition: The core utility is maintained as an open-source tool hosted on the GridProtectionAlliance/phasorsplitter GitHub repository.

Enterprise Edition (EE): Features a web-browser interface, a connection status diagnostic layout, and faster processing capabilities. It supports rapid network provisioning via CSV file imports and exports.

Alternative Implementations: The concept of a PMU data stream splitter is also implemented in open-source developer libraries like the Python package pyPMU, which allows researchers to construct simulated grid testbeds.

To better assist you with this technology, please consider the context provided below.

The context of your inquiry matters because deployment strategies shift depending on whether you are working in a production environment, analyzing protocols, or researching power networks. Providing details about your intended environment helps pinpoint the most relevant architecture guidelines.

Are you planning to deploy the open-source GPA app, or are you building your own stream manager via libraries like pyPMU?

What specific synchrophasor protocol (e.g., IEEE C37.118, IEC 61850) is your system primarily utilizing?

Are you routing this data to an archival database, a real-time PDC like openPDC, or external utility partners? GridProtectionAlliance/phasorsplitter: Creates … – GitHub