论文标题
风力涡轮机频率支持对电源系统的小信号稳定性的影响
Impact of Frequency Support by Wind Turbines on Small-Signal Stability of Power Systems
论文作者
论文摘要
风能整合不断上升，伴随着降低的系统惯性水平，需要其他辅助服务来源。配备特定对照时，基于双喂养感应发生器（DFIG）的风力涡轮机可以提供惯性和初级频率支持。本文研究了DFIGS对电力系统小信号稳定性的频率支持提供的影响。为此，采用了Kundur两面积测试系统的修改版本来分析不同的方案。风能产生要么添加到现有系统中，要么将同步生成的一部分取代。模拟表明，初级频率支持倾向于改善机电振荡的阻尼，并使基于转换器控制的机电振荡变质。另一方面，根据控制参数的调整，惯性反应可能是有益的，有害或可忽略的。
Rising wind energy integration, accompanied by a decreasing level of system inertia, requires additional sources of ancillary services. Wind turbines based on doubly fed induction generators (DFIG) can provide inertial and primary frequency support, when equipped with specific controls. This paper investigates the effect of frequency support provision by DFIGs on the small-signal stability of power systems. To this end, a modified version of the Kundur two-area test system is employed to analyze different scenarios. Wind energy generation is either added to the existing system or displaces part of the synchronous generation. Simulations show that primary frequency support tends to improve the damping of electromechanical oscillations and deteriorate it for converter control-based ones. On the other hand, inertial response may be either beneficial, detrimental or negligible to damping, depending on the tuning of control parameters.
