CAJ | 학술논문

大容量风电的接入使得系统的稳定性发生变化。本文推导出了含有大容量风电的网络暂态能量函数的表达式，分析了大容量基于双馈感应电机（DFIG）的风电机组接入系统后暂态能量在网络中的分布特性。根据大容量基于DFIG的风电机组接入系统，暂态能量的分布同样具有聚积性的特点，分析了可控串联补偿装置对系统暂态稳定性的影响，并以网络能量函数为依据提出了仅依赖于支路信息的控制策略。以单机无穷大系统和New England 10机39节点系统为算例进行了仿真计算，结果表明了所提控制策略可以有效提高系统暂态稳定性，并能改善风电场在电网发生故障后电压的恢复。
대용량풍전적접입사득계통적은정성발생변화。본문추도출료함유대용량풍전적망락잠태능량함수적표체식，분석료대용량기우쌍궤감응전궤（DFIG）적풍전궤조접입계통후잠태능량재망락중적분포특성。근거대용량기우DFIG적풍전궤조접입계통，잠태능량적분포동양구유취적성적특점，분석료가공천련보상장치대계통잠태은정성적영향，병이망락능량함수위의거제출료부의뢰우지로신식적공제책략。이단궤무궁대계통화New England 10궤39절점계통위산례진행료방진계산，결과표명료소제공제책략가이유효제고계통잠태은정성，병능개선풍전장재전망발생고장후전압적회복。
Transient stability of the power system is changed with large-scale wind power integration of the system. The network transient energy function of the system with wind farms is derived, and the distribution of transient energy over the network of the power system, which is integrated with large scale wind turbines utilizing doubly fed induction generators(DFIG), is analyzed. Based on the feature that the majority of the transient energy of the system integrated with DFIG accumulates in the local section of the network, the impact of thyristor controlled series compensation(TCSC) on power system transient stability is studied. The network transient energy function is used to determine the control strategy of TCSC in transient stability process, which is only based on branch dynamic variables. As an example, the New England 10-generator 39-bus system and one machine infinite bus system are simulated. Simulation results demonstrate that the method can improve power system transient stability and voltage recovery of the wind farm.