CAJ | 학술논문

该文作为2篇系列文章的第2篇，重点分析双馈风机组成的大规模风电场集中接入电力系统后影响系统暂态功角稳定性的关键因素。在第1篇文章理论分析的基础上，根据扩展等面积定则，讨论了同步机出力调整、风电渗透率和风电场选址等因素起主导作用时，电力系统暂态功角稳定性的变化。然后，从暂态功角稳定的角度出发，总结出风电接入情况下指导电力系统规划和调度的一般规律。最后，通过在双机互联系统上进行的数值仿真验证所提规律的正确性。结果表明，从本质上看，各种因素的变化如果有助于减小前向机群的有功出力，则有助于提高电力系统的暂态功角稳定水平。
해문작위2편계렬문장적제2편，중점분석쌍궤풍궤조성적대규모풍전장집중접입전력계통후영향계통잠태공각은정성적관건인소。재제1편문장이론분석적기출상，근거확전등면적정칙，토론료동보궤출력조정、풍전삼투솔화풍전장선지등인소기주도작용시，전력계통잠태공각은정성적변화。연후，종잠태공각은정적각도출발，총결출풍전접입정황하지도전력계통규화화조도적일반규률。최후，통과재쌍궤호련계통상진행적수치방진험증소제규률적정학성。결과표명，종본질상간，각충인소적변화여과유조우감소전향궤군적유공출력，칙유조우제고전력계통적잠태공각은정수평。
As the second part of this two-part paper, this paper focused on the factors that had impacts on the transient angle stability of power systems with large-scale wind power farms consisted of doubly-fed induction generators (DFIG). Based on the theoretic analysis in the first part of this paper, how wind power penetration influenced power system transient angle stability was discussed according to the extended equal area criterion when the factors, such as the synchronous generator dispatch pattern, the siting of wind farms and the wind power penetration rate, played a leading role. Then general rules for power system planning and dispatching considering transient angle stability of power systems with high wind power penetration rate were summarized. Finally, the proposed rules were verified by simulations on a two-machine power system. The results show that in essence, if the variation of the factors helps reduce the active power of synchronous generators of which the power angle swings forward, it is beneficial to transient angle stability of power systems.