CAJ | 학술논문

从抑制电力系统区域间低频振荡以及减少风电机组传动链轴系扭振方面，提出双馈风电附加阻尼控制策略。首先，建立了考虑传动链柔性的风电机组暂态模型及控制策略。其次，提出考虑电力系统传输线功率信号的双馈风电机组无功功率环的附加阻尼控制策略。最后，以双馈电场接入IEEE两区域四机系统为例，针对电网传输线三相短路故障和区域内同步发电机有功率小扰动2种情况，分别对不同阻尼信号增益下的有功功率环和无功功率环附加阻尼控制策略系统动态性能进行仿真。比较结果表明，与无附加阻尼控制相比，基于有功功率环或无功功率环附加阻尼控制能够更好地抑制传输线功率振荡，且无功功率环附加阻尼控制不会导致风电机组动链轴系扭矩振荡幅值增加。
종억제전력계통구역간저빈진탕이급감소풍전궤조전동련축계뉴진방면，제출쌍궤풍전부가조니공제책략。수선，건립료고필전동련유성적풍전궤조잠태모형급공제책략。기차，제출고필전력계통전수선공솔신호적쌍궤풍전궤조무공공솔배적부가조니공제책략。최후，이쌍궤전장접입IEEE량구역사궤계통위례，침대전망전수선삼상단로고장화구역내동보발전궤유공솔소우동2충정황，분별대불동조니신호증익하적유공공솔배화무공공솔배부가조니공제책략계통동태성능진행방진。비교결과표명，여무부가조니공제상비，기우유공공솔배혹무공공솔배부가조니공제능구경호지억제전수선공솔진탕，차무공공솔배부가조니공제불회도치풍전궤조동련축계뉴구진탕폭치증가。
From the viewpoint of damping the inter-area low frequency oscillation and decreasing the shaft torsion oscillation of the wind turbine drive train, an ancillary damping control strategy is proposed for wind farms with doubly-fed induction generators (DFIG). Firstly, the transient state models of DFIG considering the drive train shaft tensional flexibility and control strategies are presented. Secondly, ancillary damping control strategies considering the power signals in transmission lines are developed on the reactive power control loop. Finally, an example of two-area four-machine power system of IEEE integrated with wind farms with DFIG is presented, with three-phase short-circuit fault on the transmission lines and the small disturbance of active power on the synchronous generator, dynamic performances of additional damping control are simulated by using different gains on the active power loop and reactive power loop respectively. The simulation results show that the power oscillation in the transmission lines is reduced by using the ancillary damping control strategy .on the active power loop and reactive power loop, and that the shaft torsion torque oscillation of the wind turbine drive train cannot be increased by the reactive power loop with this strategy. This work is supported by Program for New Century Excellent Talents in University (No. NCET-10-0878), Key Technologies Research and Development Program of Chongqing (No. CSTC, 2011AB3069) and Scientific Research Foundation of State Key Laboratory of Power Transmission Equipment & System Security and New Technology (No. 2007DA10512710101)