Abstract: A set of intelligent energy management system has been designed to ensure the stability and quality of power supplied to the negative ion source neutral beam injection (NNBI) system. This system utilizes a Siemens programmable logic controller (PLC) in combination with a distributed input/output (I/O) system that continuously monitors the operational status of the power supply system circuits. The Modbus communication protocol is implemented to interact with multifunctional energy meters for this purpose. Additionally, an intuitive human-machine interface design has been incorporated into the system to provide the experiment operators with a convenient tool to assess the system status directly. This intelligent energy management system has a certain degree of compatibility and scalability. The test results show that the system is stable and reliable, and effectively fulfills the requirements for the NNBI system.

Key words: Neutral beam injection, Intelligent energy management system, Modbus communication, Human- computer interaction interface

摘要： 为保障负离子源中性束注入(NNBI)系统用电的电能质量和稳定性，设计一套智慧能源管理系统。该系统以西门子PLC及分布式I/O系统为控制核心，通过对供配电系统各回路状态监控，基于Modbus通讯协议与多功能表的信息交互，实现对用电系统能耗监测及管理。通过可视化人机交互界面设计，为实验运行人员提供直观便捷的系统状态诊断工具。该系统具备一定的兼容性和扩展能力。相关台面测试表明，智慧能源管理系统运行稳定，控制可靠，能满足供配电系统的智能化管理和监测需求。

关键词: 中性束注入, 智慧能源管理系统, Modbus通讯, 人机交互界面