考虑未建模动态的直流输电系统鲁棒自适应控制

为提高电力系统在受到严重扰动时的稳定性，提出一种利用直流线路附加控制的鲁棒自适应控制方案。介绍带未建模动态的鲁棒自适应非线性控制原理，建立相对应的单机无穷大系统的数学模型，然后推导出考虑发电机未建模动态的直流线路附加控制规律以改善系统的响应性能。控制方案考虑了发电机未建模动态，同时设计过程简单，易于实现，对系统稳定性改善明显，鲁棒性好；从每台机组的控制仅依赖于当地机组可用信息的意义上来说，该控制方案是当地的。仿真算例证明控制方案对改善系统性能的有效性。

The Robust Adaptive Control of HVDC Transmission System with Unmodeled Dynamic

To improve the performance of ac/dc system, the robust adaptive additional control scheme of DC line is developed. This paper introduces firstly the principle of the robust adaptive control of nonlinear systems with unmodeled dynamics, then developed the robust adaptive additional control of DC line with unrnodeled dynamic of generator in order to improve stability of power system. The additional control of DC line with unmodeled dynamic only utilizes the local signals and its design is simple, furthermore it can obviously improve the stability of power system in different operational conditions. Experimental results using the presented concepts obtained on single machine infinite bus model are also included. These results prove the efficiency of the control scheme. This provided a new idea to design controller by use of simplified model.