智能配电终端及其标准化建模

Smart Distribution Terminal Unit and Its Standardized Modeling

智能配电终端(SDTU)分散安装于智能配电网的各测点处,完成数据采集、分布式故障检测、自愈控制、通信、与高级配电自动化系统进行信息交互等功能,是智能配电网的重要组成部分。文中描述了SDTU的功能,提出了具有分层特点的通用结构设计,基于IEC 61850标准的要求对SDTU进行了标准化建模,重点介绍了区域纵联保护功能和孤岛检测功能的模型,对新增逻辑节点和数据类进行了详细描述。在此基础上,给出了SDTU完整的功能模型,并用变电站配置描述语言对SDTU的逻辑设备配置情况进行了描述,为设计开发标准化的SDTU奠定基础。

The smart distribution terminal unit（SDTU） is installed in the smart distribution grid dispersedly as an important part to accomplish data acquisition,distributed fault detection,self-healing control,communication and information interaction with advanced distribution automation（ADA） system.SDTU functions are described,a general structure design with layered characteristics is proposed,its standardized model of IEC 61850 is built.Models of area longitudinal protection and islanding detection are described at length,newly added logical nodes are also dealt with in detail.Finally the whole function mode of SDTU is given and described by substation configuration description language for laying the foundation of designing the standardized model of SDTU.