基于一二次深度融合的多智能体FTU研究

在主动配电网条件下，馈线终端单元FTU的功能和性能都需要拓展与提升。针对以上背景，提出了一种基于一二次深度融合的多智能体FTU。这种FTU包括宽带电压传感器、宽带电流传感器、信号转换单元ADCU和主控单元MCU 4个部分。其中：ADCU承担数据采集、电能计量及分合闸控制命令转换任务；MCU配置了北斗/GPS接收机，承担PMU、故障识别与隔离以及无线通信任务；MCU与ADCU的数据交换采用高速光纤通信，通信协议可以灵活选择或自定义；MCU与ADCU之间仅工作电源有电气连接，消除了电气连接环路，有效地提高了抗干扰能力。详细设计了所提多智能体FTU的系统结构、基于文氏桥电路的宽带电压传感器和铁芯带气隙的宽带电流传感器。重点研究了多智能体的“环境”构建方法和同步协调机制、特定功能智能体的设计原则和结构。所提技术方案满足配电自动化设备集成化和智能化的设计理念，拓展了FTU的功能，提高了FTU的性能，为本领域研究者提供了一种新的思路。

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).