复杂电力系统鲁棒性协调控制研究

Research of Robust Coordinated Control in Big Power System

针对现有的电力系统鲁棒控制策略中存在的不足,提出了将关联测量控制理论与鲁棒控制相结合的控制策略,即先建立复杂电力系统中各子系统数学模型,再视各控制器的关联量为扰动项来设计鲁棒控制器,该控制器不仅能显著改善电力系统的小干扰稳定性,而且还无需采集远方测量信号,装置复杂度低。最后,通过对8机36节点测试算例的建模与仿真计算,证明投入该鲁棒励磁控制器,与传统分散协调控制器相比,对运行方式的变化有满意的鲁棒性。

Based on some shortcomings of robust control law in power system, a novel control law that is blending robust control and associated and decentralized control is presented in this paper. Firstly, independent subsystems mathematical models of big power system are built. Secondly, the robust controller is designed when interconnected effect of generators is considered as disturbance. This controller cannot only improve dynamic stability of power system, but also the difficulty of calculation is reduced because the signals of other area Need not to be collected. Finally, the result of simulation based on EPRI - 36 test system shows that the method is efficient.