【摘要】 高压直流输电工程中直流远动系统的架构与实现方式是直流远动通信系统设计的基础,文中比较了队列式和直传式两种不同技术路线通信系统设计的差异,对不同通信方式下帧的分类、传输时的优先级判断和通信时延等进行了分析比较,两种通信方式虽然存在差异,但都可满足高压直流输电系统站间通信系统的设计要求,文中所述直流远动系统的设计均已在实际工程中应用。此外,对直流输电系统进行电磁暂态仿真(EMTDC)研究时也需要考虑两端换流站站间通信的影响,文中研究了站间或极间通信的等效模型实现方法,构建了模拟直流远动通信的用户自定义模型,利用该模型可模拟电磁暂态离线仿真时站间和极间的数据传输过程,提高电磁暂态仿真与实际系统的一致性。更多还原

【Abstract】 The framework and implementation of HVDC telecommunicaiton system in HVDC projests is the basis of telecommunication design.In this paper,the difference of two kind of communication system technical design,queue type and direct transmission type,are compared,which include frame classification,transmission priority judgement and time delay etc.Although the diversity of these two kinds of telecommunication,all technical designs can meet the requirements of HVDC projects,and have been put into practical application.In addition,the influence of telecommunication between two converter stations is also needed to be considered when the electromagnetic transient simulation of HVDC is studied using PSCAD/EMTDC.In the end,the equivalent model for the communication between substations or poles,and the self-defined model of HVDC telecommunicaiton is built,which can simulate the data transmission process between substations and poles to improve the consistency between electromagnetic transient simulation and actual system.更多还原