CAJ | 학술논문

将配电线路分为架空线路和电缆线路两大类，并建立精确、简化和近似3种线路模型。给出负荷不平衡线路伏安特性的计算方法，通过分析线路模型对电压不平衡度的影响，进而研究线路模型对配电网状态估计的影响。通过 IEEE 33节点系统对不同线路模型进行测试，得出结论：精确模型对实时量测的影响较小，对精度不高的伪量测影响较大；若要提高伪量测的精度，可采用简化模型。
장배전선로분위가공선로화전람선로량대류，병건립정학、간화화근사3충선로모형。급출부하불평형선로복안특성적계산방법，통과분석선로모형대전압불평형도적영향，진이연구선로모형대배전망상태고계적영향。통과 IEEE 33절점계통대불동선로모형진행측시，득출결론：정학모형대실시량측적영향교소，대정도불고적위량측영향교대；약요제고위량측적정도，가채용간화모형。
This paper divides power distribution lines into two classifications including overhead lines and cable lines and es-tablishes three line models including precise line model,simplified line model and approximate line model.It provides calcu-lation method for V-I characteristics of load unbalanced lines and studies impact on state estimation on distributed network of line modes by analyzing impact of line models on voltage unbalanced degree.Based on IEEE 33 node system,it proceeds tes-ting for different line models and draws conclusions that the precise model has smaller impact on real-time metering while it may has more impact on false metering with low precision.In addition,it suggests to use simplified model to improve preci-sion of false metering.