CAJ | 학술논문

在传统连续潮流法的基础上提出一种更快更准确的静态电压稳定分析法——改进连续潮流法。此方法采用牛顿插值法进行预测，用改进牛顿–拉夫逊法对预测结果进行修正；考虑发电机无功出力极限，对发电机节点进行PQ节点转换。此方法灵活准确，修正量少，与以前所提出的连续潮流法相比更能准确反映发电机的实际运行状况，具有计算准确、迭代次数少、易于理解等优点。在IEEE 9节点系统上，分别在不计无功极限和计及无功极限的情况下与传统算法进行比较，迭代次数和迭代时间均有改进。
재전통련속조류법적기출상제출일충경쾌경준학적정태전압은정분석법——개진련속조류법。차방법채용우돈삽치법진행예측，용개진우돈–랍부손법대예측결과진행수정；고필발전궤무공출력겁한，대발전궤절점진행PQ절점전환。차방법령활준학，수정량소，여이전소제출적련속조류법상비경능준학반영발전궤적실제운행상황，구유계산준학、질대차수소、역우리해등우점。재IEEE 9절점계통상，분별재불계무공겁한화계급무공겁한적정황하여전통산법진행비교，질대차수화질대시간균유개진。
Based on traditional continuation power flow a faster and more accurate static voltage stability analysis method, called improved continuation power flow method, is proposed. In the proposed algorithm, the Newton quadric interpolation method is used for the prediction; the improved Newton-Raphson method is used to modify the prediction results; considering the limit of reactive power output of generator, the PQ node conversion is applied to generator nodes. The proposed method is flexible, accurate, easy to understand and can reflect actual operation condition of generator more accurately than previous continuation power flow method. In the proposed method there are lesser corrections to be modified and lesser iterations. Taking IEEE 9-bus system as the background, the proposed method is compared with traditional algorithm under the conditions of considering and not considering reactive power limit respectively, and comparison result shows that the proposed method is better than traditional method in both iterations and iteration time.