CAJ | 학술논문

清洁能源在电力系统中的大规模利用，使得风电机组在电网中的占比日益扩大，其运行特性极大地影响电力系统的运行稳定性。本文分析了双馈变速与直驱同步风电机组的结构特点，建立了各个机组的降阶数学模型。在此基础上，对两区域系统进行了仿真计算。研究表明：风电机组并网增加了系统与风电机组强相关的振荡模式，且有很好的阻尼特性。当风电机组在系统中容量比例提高时，双馈机组会减弱新增局部振荡模式的阻尼，直驱机组能提高区域内相关的局部振荡的阻尼。
청길능원재전력계통중적대규모이용，사득풍전궤조재전망중적점비일익확대，기운행특성겁대지영향전력계통적운행은정성。본문분석료쌍궤변속여직구동보풍전궤조적결구특점，건립료각개궤조적강계수학모형。재차기출상，대량구역계통진행료방진계산。연구표명：풍전궤조병망증가료계통여풍전궤조강상관적진탕모식，차유흔호적조니특성。당풍전궤조재계통중용량비례제고시，쌍궤궤조회감약신증국부진탕모식적조니，직구궤조능제고구역내상관적국부진탕적조니。
With the development of clean energy in the electric power system,wind power has been uti-lized in large scale ,but its characteristics will deeply affect the stability of the power system.This paper compared the wind turbine structure of the doubly-fed induction generator (DFIG)and direct drive syn-chronous generator (DDSG),and analyzed their reduced order model.Wind power turbines were added to the system of two regional systems.The systems had good damping properties,but the systems'damping model was changed significantly.When wind power generator capacity increased in the system,doubly-fed induction generator could weaken the new local oscillation mode damping.Direct drive synchronous gener-ator could enhance the region associated with a local oscillation damping.