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SMVsubscriber - IEC 61850
Hardware Processing of Sampled Measured Frames
The IEC 61850-9-2 standard introduces the concept of a sampled measurement value (SMV or SV) process bus. The standard proposes to digitize current and voltage transformer (CT, PT) outputs and other signals at the source and then communicate with these devices using an Ethernet-based local area network (LAN).
Sampled values are transmitted as a high-speed data stream of dataset samples encoded as multicast Ethernet frames. The protocol uses a publisher/subscriber model where the publisher transmits unrecognized data to the subscriber. For example, in the IEC 61850-9-2 LE profile, the sampled values are published at a rate of 4000 frames per second for 50Hz grid frequencies and 4800 frames per second for 60Hz.
SoC-e develops an innovative technology that leverages the advantages of parallel hardware processing on FPGAs to process large numbers of SMV streams with certainty and very low latency.
The SMVsubscriber analyzes the incoming traffic and detects IEC 61850-9-2 Sampled Measurement Value (SMV) frames. Processes selected SMV frames according to several configuration parameters, extracting current and voltage sample values for four phases (A, B, C, and N).The IP uses these sample values to perform a Discrete Fourier Transform (DFT) calculation to obtain the angle and magnitude of each phase as well as the Root Mean Square (RMS). It also provides user-defined extraction rates for the samples.
Main functions of the SMVsubscriber subscriber
- Layer 2 IEC 61850-9-2 (SMV) frame processor
- High-performance realization of the DFT calculation module for calculating the amplitude and phase of primary harmonics (50 or 60 Hz).
- High-performance RMS calculation module (up to 1562500 calculations/second)
- Supports up to 128 concurrent SMV streams (up to 320 streams, depending on process window configuration)
- Waiting time for the complete calculation of the 6us certainty
- Status, Configuration and Statistics Counter Registers
- 1000 Mbps AXI-Stream interface for seamless on-chip communication and combination with SoC-e network IP (HSR/PRP, Ethernet, TSN)
The SMVsubscriber can also be configured with the
SMVsubscriber can be flexibly and easily customized (GUI interface) to generate optimal implementations based on the required trade-offs in performance resources. Among other parameters, the SMVsubscriber can be configured:
- Maximum number of data streams supported
- Parallelism of Hardware DFT Processing Modules
- Parallelism of RMS processing modules can be implemented.
- Extraction rate of RAW SMV frames sent to advanced software applications
- Sample processing rate and window for adjusting the frequency of each stream for calculating DFT and RMS
Keeping up with the times and innovating - Explore more potentials of TSN with Hongke
Time Sensitive Networking (TSN) is a new generation of network technology based on the evolution of the standard Ethernet architecture. It takes traditional Ethernet as the network foundation and provides a data link layer protocol specification for deterministic data transmission capability through mechanisms such as clock synchronization, data scheduling, and network configuration. Compared with traditional Ethernet, TSN can provide microsecond-level deterministic services, reduce the complexity of the entire communication network, and realize the convergence of information technology (IT) and operation technology (OT). With its precise clock synchronization, deterministic traffic scheduling, and intelligent and open operation and maintenance management framework, TSN can ensure the high-quality transmission of multiple business traffic in a common network, and it has both performance and cost advantages, and it is the development trend of the future network. This is the future trend of network development.
Currently, TSN technology has a high level of discussion in the automotive, industrial, rail transportation, and aerospace fields. As a non-vendor-bound real-time communication protocol, we believe that TSN technology has a good application prospect.
Welcome to contact us to explore and learn the integration of TSN technology with various industries, and actively promote more applications on the ground to jointly build a new world of intelligent interconnection.
