摘要
随着科技的进步和经济的发展,电网改革不断深入。电网监测和控制范围逐渐从变电站、高中压配电线路向低压用户侧延伸,传统的配网数据采集和控制管理方式越来越不能满足要求,配电系统自动化成为必然的趋势。通信系统是配网自动化系统的重要组成部分,是整个配网自动化系统的数据来源,其整体性能的提高对提高配网自动化系统服务质量有着重要作用。
根据某公司配网运行数据自动采集与处理系统需求,对目前国内配网系统自动化进行了相关研究,设计了一种采用服务器分级体系结构的配网通信平台系统。该系统采用通信服务器和前置机二级结构,通信服务器负责任务的调度管理,前置机完成任务的执行处理。在通信服务器中设计实现了一种可配置的“多次轮询”周期任务调度算法,具有很高的灵活性;在前置机上使用了Windows完成端口(IOCP)技术,使得前置机的网络负载能力极大提高;同时在前置机上采用了合理的终端设备分片解码策略,前置机的编解码处理性能有很大提升;前置机支持TCP和串口配网终端设备,实现了101规约和负控规约模块,规约模块采用DLL库封装。系统采用模块化设计,并且在设计过程中使用了一些模块去耦合方法,使得前置机具有支持多种规约和多种通信方式的扩展性。前置机的这些扩展性使本通信平台系统的应用领域十分广泛,同时为系统的后续研究奠定了很好的基础。
With the advancement of technology and development of economic, the reform of power grid is deepening continuously. The monitoring and control area of power grid has extended from power substation and high-medium voltage distribution lines to low voltage customers. The traditional data acquisition and management of distribution network increasing unable to meet the requirements, distribution system automation has become an inevitable trend. Communication system is a very important part of the distribution automation system and it supplies the data that automation system need, to improve the performance of the communication system plays an important role in the QoS improvement of distribution automation system.
Based on the current domestic distribution automation research, according to the requirements of distribution automatic data acquisition and processing system of Guangzhou Keli company, this paper designed a distribution communication system using multilayer server architecture. The system has“communication server”and“front-end computer”secondary structure. Designed and implemented a configurable periodic task scheduling algorithm in the communication server. In the front-end computer, via the using of Windows IOCP and its optimization, the load capacity is greatly enhanced. In the design process, modular-design method was used, this made the front-end computer has the expansion of multi-protocol and multi-communication types. So the application domain of the communication platform is very extensive.
引文
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