基于智能边缘计算的分布式紧急频率调节控制方法

Distributed frequency emergency control with coordinated edge intelligence

中文关键词: 边缘计算  频率控制  智能面板  电网功率缺额估计

英文关键词: edgecomputing  distributed frequency control  smart outlet  power loss estimation

中文摘要:

      海量分布式微小负荷参与电力系统频率调节可以增加调频容量和提升电网安全，但传统的集中控制法需要大量昂贵的高速通信信道，分布控制法又难以保证全局控制精度。针对上述海量分布式微小负荷的聚合和控制问题，提出了一种名为“电网脉”的基于物联网技术的分布式负荷调控系统，研发了一种基于智能边缘计算的电网功率缺额的本地估计方法。利用该方法，海量终端设备（如智能插座）可以在本地快速检测电网频率下跌事件，估计电力系统中的有功功率缺额，并迅速响应以准确地进行负荷切除。大量实验表明电网脉及其频率控制方法可以有效阻止严重功率缺额事故导致的电力系统频率快速大幅下降，具有较高的响应速度、全局控制精度和抗干扰性，可提升电网在大功率缺额情况下的频率恢复。

英文摘要:

      The participation of a large number of distributed loads in frequency control can improve power system security, but the conventional centralized control needs costly high -speed communication channels and the distributed methods lack sufficient global accuracy. To address the above problem, the cyber-physical design of an IoT-enabled system,“Grid Sense”is presented, and it features a local power loss estimation approach for frequency emergency control based on coordinated edge intelligence. Based on the design, smart outlets of Grid Sense detect the frequency disturbance event locally using the parameters sent from the control center to estimate active power loss in the system, and to make rapid and accurate switching decisions soon after a severe contingency.Numerical simulations and hardware experiments are conducted,and it is shown that Grid Sense can accurately and rapidly prevent the drop of frequency after a major power loss with great speed, accuracy and robustness.