Comparative study between HDP and PSS on DFIG damping control
Comparative study between HDP and PSS on DFIG damping control
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DOI：
10.1109/ciasg.2013.6611499
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
Yufei Tang;Haibo He;J. Wen
中科院分区：
文献类型：
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作者：
Yufei Tang;Haibo He;J. Wen
本文将基于启发式动态规划（HDP）的辅助控制与基于电力系统稳定器（PSS）的双馈感应发电机（DFIG）辅助控制即有功阻尼控制进行了比较。传统的双馈发电机PSS阻尼控制设计是基于特征值分析的。对于这样的分析，干扰被认为是足够小的，以允许代表电力系统的非线性模型被线性化，并表示在状态空间形式。当扰动或系统结构发生变化时，这种设计容易陷入局部极小，不能保证控制器的鲁棒性。另一方面，本文分析的基于HDP的补充阻尼控制器是“无模型”的在线学习能力：一旦观察到系统状态，随后将根据性能指标函数产生动作。在一个基准电力系统上，将这种HDP辅助控制器与传统的PSS控制器进行了比较，证明了其控制性能和鲁棒性的改善。
In this paper, heuristic dynamic programming (HDP) based supplementary control is compared with the power system stabilizer (PSS) based supplementary control for doubly-fed induction generators (DFIG), namely, the active power damping control. The traditional design of PSS control on DFIG damping is based on eigenvalue analysis. For such analysis, disturbances are considered sufficiently small to permit the nonlinear model representing the power system to be linearized and expressed in state space form. When the disturbance or the system configuration changes, this kind of design is easy to become entrapped in local minimal and the robust ability of the controller is not guaranteed. On the other side, the HDP based supplementary damping controller analyzed in this paper is “model-free” with on-line learning capability: once a system state is observed, an action will be subsequently produced based on the performance index function. The obtained results by such a HDP supplementary controller on a benchmark power system are compared with the traditional PSS controller, demonstrating the improved control performance and robustness.