FlexE技术承载继电保护业务白皮书.pdf

Technical White Paper on the FlexE-based Relay Protection Service Bearer Solution HUAWEI TECHNOLOGIES CO., LTD. About This Document This document describes how to use the innovative FlexE technology to transmit relay protection services (mission-critical services in power grids) and meet the requirements of low latency, low jitter, and two-way latency consistency during the IP-based evolution of smart grids. Through analysis, modeling, and testing, this document fully demonstrates how FlexE provides independent hard pipes for relay protection services and solves the problem that the latency and jitter in case of blocking caused by long packets do not meet service requirements when the traditional hierarchical quality of service (HQoS) technology is used. The FlexE technology fully meets the bearer requirements of relay protection services and paves the way for the evolution of smart grids from traditional SDH to all-IP, ensuring grid security and reducing power outage risks. Contents About This Document 00 Smart Grid Development Towards IP 01 Requirements of Relay Protection Services for Communication Networks 02 2.1 Introduction to Relay Protection Services 02 2.2 Network Requirements of Relay Protection Services 03 Challenges Facing Traditional IP Networks in Carrying Relay Protection Services 06 3.1 Current IP Bearer Solution for Relay Protection Services 06 3.1.1 Relay Protection Service Emulation 06 3.1.2 Static Bidirectional Co-Routed LSP