多馈入HVDC的模糊自适应协调阻尼控制器设计

提出一种基于广域测量系统的多馈入高压直流（HVDC）模糊自适应协调阻尼控制器。该控制器在传统的单输入单输出控制结构基础上增加了一个模糊逻辑单元，自适应地在线调整系统的移相角。同时，增益K与模糊逻辑单元联调，以保证移相环节参数改变后整个控制通道的增益保持不变。利用Prony辨识算法和极点配置法对该阻尼控制器的固定参数进行了整定，并对整定后的参数进行了协调优化。以中国南方电网2007年网络结构为对象，给出了该模糊自适应协调阻尼控制器的设计过程及仿真结果。结果表明：该阻尼控制器能快速、有效地阻尼区域间振荡，提高交流联络线的传输能力，对不同的网络结构具有鲁棒性，可明显改善多馈入HVDc系统的稳定性。

Design of Fuzzy Adaptive Coordinated Damping Controller for Multi-infeed HVDC System

A wide-area measurement system(WAMS)based fuzzy adaptive coordinative damping controller is developed for multi-infeed HVDC system.Compared with traditional single input/single output controllers,the proposed damping controller applies a fuzzy logic unit to achieve on-line self-adaptive adjustment of the system phase angle.Meanwhile,its gain K is regulated jointly with the fuzzy logic unit so as to ensure the gain of the whole control channel keeps constant against parameter change during phase shifting.The parameters of proposed controllers are tuned by use of the pole placement method,Prony modal identification,and coordinative optimization theory.The simulation results on China Southern Power Grid show that the proposed damping controller is capable to damp inter-area oscillations,enhance the AC tie-lines' transfer capability,be robust in different operating conditions,and improve the stability of the multi-infeed HVDC system.