一种基于多代理理论的最优目标紧急控制策略

将多代理理论引入阀门快关紧急控制手段中，提出了一种基于多代理理论的电力系统紧急控制策略。控制结构分为区域代理和本地代理上下两层。区域代理主要负责运用相关不平衡点方法判断系统是否失稳，失稳情况下启动本地代理，由本地代理上传发电机角速度，区域代理计算惯性中心角速度，比较两者，确定需要执行紧急控制的发电机，并下达控制命令。本地代理在收到执行控制命令后，基于最优目标控制理论求得控制量，通过阀门快关手段实现紧急控制。4机系统数字仿真表明，该控制策略可提高系统稳定性。

Optimal aim emergency control strategy based on multi-agent theory

The multi-agent theory is introduced and applied in fast valving, based on which an emergency control strategy of the power system is presented. The control structure has two layers: areal agent and local agents. The areal agent judges whether the power system is stable using unstable equilibrium point method. When an unstable state occurs, the local agents are triggered to send upward the angular velocities of generators and the areal agent calculates inertia center angular velocity. By comparing them, the areal agent determines which generator needs emergency control and sends downward the control commands. After receiving the commands, the local agents calculate control variables using optimal aim theory and realize emergency control using fast closure of valve. Simulations on a 4-machine system show that the proposed control strategy improves the system stability.