CAJ | 학술논문

提出了一种改善双馈风电场并网系统动态稳定性的控制策略。系统的振荡能量和暂态能量具有一致性，消耗振荡能量的元件能够加速系统不平衡能量的衰减，具有正阻尼。以此为基础，研究了以消耗振荡能量为目标的双馈风电场动态稳定控制方法，并讨论了机组运行极限对控制效果的影响，分析了风电场无功补偿的必要性。控制策略利用双馈风电机组快速有功、无功调节特性，暂存系统不平衡能量，并为系统提供无功补偿，改善系统的动态响应，提高系统稳定性。在DigSILENT/Power Factory中进行了仿真分析，验证了所提出控制策略的有效性及其对电网稳定性的贡献。
제출료일충개선쌍궤풍전장병망계통동태은정성적공제책략。계통적진탕능량화잠태능량구유일치성，소모진탕능량적원건능구가속계통불평형능량적쇠감，구유정조니。이차위기출，연구료이소모진탕능량위목표적쌍궤풍전장동태은정공제방법，병토론료궤조운행겁한대공제효과적영향，분석료풍전장무공보상적필요성。공제책략이용쌍궤풍전궤조쾌속유공、무공조절특성，잠존계통불평형능량，병위계통제공무공보상，개선계통적동태향응，제고계통은정성。재DigSILENT/Power Factory중진행료방진분석，험증료소제출공제책략적유효성급기대전망은정성적공헌。
A novel control strategy to enhance the dynamic stability of grid-connected wind farm based on doubly-fed induction generator ( DFIG ) was presented. The oscillation energy of system was consistent with its transient energy,the element dissipating energy had positive contribution to the attenuation of unbalancing energy and had positive damping. Then a dynamic stability control strategy based on oscillation energy consumption was studied, the impacts of DFIG operation limits on the control were also discussed, and analyzing the necessity of reactive power compensation for wind farm. The control strategy storage unbalanced energy temporarily and provided fast reactive power compensation by making use of the DFIG fast active and reactive power regulation characteristic, it could improve the dynamic stability of the system. A testing system including a DFIG-based wind farm was realized using DigSILENT/Power Factory, the strategy validation and the contribution to power system stability enhancement were verified by simulation.