基于背板总线的站域保护控制装置设计

Design of Substation-area Protection and Control Equipment Based on Backboard Bus

提出一种基于背板总线的智能变电站站域保护控制装置设计方案。设计出一种基于多点低电压差分信号的多主通信背板总线结构;基于资源配置和逻辑图分割描述装置功能协作模型,以背板总线为核心,建立模件内虚拟逻辑总线、背板总线、过程总线以及广域通信网等多层次数据集交互及其控制模型。重点分析了背板总线原理、逻辑图实现及功能分割、多层次数据交互实现等问题。该方案在110kV智能变电站站域保护控制装置设计中得到应用,可集成实现功能迁移、冗余保护、集中后备保护、安全自动控制类功能等。现场运行结果表明该设计方案的有效性和实用性。

A backboard bus based design scheme for substation-area protection and control equipment used in smart substations is proposed. A multiple master communication backboard bus is designed based on multi-point low voltage differential signaling （M-LVDS）. The cooperation model is described according to resource configuration and logic diagram division. With backboard bus as the core, a multi-level dataset interaction and control model is developed between the virtual logic bus, backboard bus, process bus and wide area communication network. Several topics are discussed, such as the principle of backboard, realization and function division of logic diagram, realization of multi-level data exchange. The design scheme proposed is applied in substation-area protection and control equipment for a 110 kV smart substation for function transfer, redundancy protection, concentrated backup protection, safety automatic control, etc. Site operation has proved its effectiveness and practicality.