智能变电站二次设备即插即用文件自动配置技术研究及平台研发

智能变电站SCD文件生成复杂，同时这些过程均需人工配置，易由于人为因素引起错误。针对这些问题，提出了智能变电站二次设备即插即用文件自动配置技术。首先，对智能变电站二次设备配置文件自动生成下发的机制进行了说明，从智能变电站二次PNP对象、智能变电站PNP注册管理和智能变电站PNP对象通信接口阐述了P2P信息交互架构。设计了配置文件自动配置逻辑，并对SCD配置文件自动配置、间隔层二次设备自动配置和过程层二次设备自动配置分别进行了说明。提出了基于IEC61850的即插即用标准接口模型，并对各类接口分别进行了说明。最后，智能变电站二次设备配置文件自动配置应用证明了所设计系统的可行性。

A multi-agent FTU based on deep-merging of primary and secondary equipment

In an active distribution network (ADN), the function and performance of a Feeder Terminal Unit (FTU) need to be improved and expanded. In this paper a multi-agent system (MAS) FTU based on deep-merging of primary and secondary equipment is proposed. The proposed FTU includes four parts: a wide-band voltage sensor, a wide-band current sensor, an analog to digital converter and control output unit (ADCU) and a main control unit (MCU). Among them, ADCU is responsible for data acquisition, electric energy metering and the conversion of switching control commands. The MCU with a Beidou /GPS receiver undertakes the tasks of PMU, fault identification, fault isolation and wireless communications. High-speed optical fiber communication is adopted for the data exchanging between the MCU and the ADCU, in which the communication protocol can be flexibly selected or customized. The only electrical connection between the MCU and ADCU is for working power supply, and this eliminates the electrical connection loop and effectively improves the anti-interference ability. The system structure of the proposed multi-agent FTU, the wide-band voltage sensor based on Wien bridge circuit, and the wide-band current sensor with iron core and air gaps are designed in detail. The key aspects studied are the construction method of the MAS environment, the design of the MAS synchronized coordination mechanism, and the design principles and structures of specific function agents. The proposed technical scheme fulfills the design concept of integration and intelligence of distribution automation equipment, expanding the functions of the FTU, improving the performance of the FTU, and providing a new idea for research in the field.This work is supported by the National Key Research and Development Program of China (No. 2017YFB0902800).