基于eTDM总线的直流控制保护系统及工程应用

摘要

控制保护系统是整个直流输电系统的核心,主要实现顺序控制、控制算法、保护策略等功能.采用模块化思想设计了新的直流控制保护系统,包括主控制、主保护、模数(AD)、数字量输入(DI)和数字量输出(DO)模块.模块化设计方案便于实现控制保护系统多重化配置且易于维护.针对各模块间通信需求,设计了可靠性更高的新型eTDM高速串行通信总线.目前,基于eTDM总线技术的直流控制保护系统已成功应用于上海南汇风电场柔性直流输电技术改造工程,结合工程系统试验证明了该直流控制保护系统的高可靠性和优越性能.%Control and protection system is the core of entire direct current transmission system,to achieve sequential control,control algorithms,protection strategies and other functions.A new direct current control and protection system is designed with modular idea,including main control,main protection,analog data (AD),data input (DI) and data output(DO) module.The modular design facilitates multiple coniiguration of the control protection system and is easy to maintain.A new type of eTDM high-speed serial communication bus with higher reliability is designed for the communication between modules.At present,the direct current control and protection system based on eTDM bus technology has been successfully applied to the technical renovation project of Shanghai nanhui flexible direct current transmission.The engineering system test shows the high reliability and superior performance of the direct current control protection system.