CAJ | 학술논문

随着风力发电的大力发展，风电出力的随机性、波动性以及其吸收无功的特点，使得风电并网后成为电网的一个扰动源，进一步对系统的脆弱性产生影响。文中结合静态能量函数模型和电气介数，提出一种能够反映节点的状态脆弱性和结构脆弱性的综合评估指标，同时将离散指标连续化，得到随时间变化而变化的综合评估指标。通过搭建含双馈风电场的电网模型进行仿真计算，得到随综合风速变化的节点综合评估指标的连续变化曲线，比较了不同接入点情况下的系统节点脆弱性的变化，并对结果进行分析。
수착풍력발전적대력발전，풍전출력적수궤성、파동성이급기흡수무공적특점，사득풍전병망후성위전망적일개우동원，진일보대계통적취약성산생영향。문중결합정태능량함수모형화전기개수，제출일충능구반영절점적상태취약성화결구취약성적종합평고지표，동시장리산지표련속화，득도수시간변화이변화적종합평고지표。통과탑건함쌍궤풍전장적전망모형진행방진계산，득도수종합풍속변화적절점종합평고지표적련속변화곡선，비교료불동접입점정황하적계통절점취약성적변화，병대결과진행분석。
With the development of wind power , the characteristics such as stochastic volatility and absorbing reactive power of wind power make it become a disturbance source of power grid , and further impact the vulnerability of the system.This paper proposed a new comprehensive assessment indicator which reflected both the state and structure vulnerability of node by combining static energy function model with electrical betweenness .It also made discrete indi-cator serialization to gain a comprehensive assessment indicator that change with time .Simulating by building grid model with double-fed wind farm, a continuous curve that comprehensive assessment indicator changes with integrated wind is obtained .The paper also compared the vulnerability of nodes change of different access points and analyzed the results.