CAJ | 학술논문

由于实际环境的影响和运行的需要等因素，电力系统输电线路结构越来越复杂。为了计算复杂情况下的光纤复合架空地线(OPGW)的故障电流，提出了基于线路交接点的扩展相分量法。根据线路的特点，将输电线路分割成若干个具有相同电气结构的区间；区间终端的电压源与其等效内阻抗由多端口戴维南等效电路求得；每个区间内建立统一的扩展相分量模型，以此来求解每个回路的电流。与传统的模型相比，所提方法更为全面地考虑了线路的电磁环境，并能解决复杂输电线路 OPGW 故障电流求解问题。
유우실제배경적영향화운행적수요등인소，전력계통수전선로결구월래월복잡。위료계산복잡정황하적광섬복합가공지선(OPGW)적고장전류，제출료기우선로교접점적확전상분량법。근거선로적특점，장수전선로분할성약간개구유상동전기결구적구간；구간종단적전압원여기등효내조항유다단구대유남등효전로구득；매개구간내건립통일적확전상분량모형，이차래구해매개회로적전류。여전통적모형상비，소제방법경위전면지고필료선로적전자배경，병능해결복잡수전선로 OPGW 고장전류구해문제。
Owing to the actual environmental impact,operational requirements and other factors,the structure of power system transmission lines is complex.In order to calculate the fault current of optical-fiber composite overhead ground wire(OPGW) in these cases,a generalized phase component method is proposed based on the split point of transmission lines,which splits the transmission line into several intervals according to the characteristics of each line.Each interval of the transmission line has the same electrical structure,and the equivalent impedance and voltage source of the interval terminal can be obtained by the multi-port Thevenin equivalent circuit.To solve each loop current,a unified model of generalized phase component in each interval is developed. Compared with the traditional model, the proposed one is more comprehensive considering the electromagnetic environment of the transmission lines,and is effective in solving the problem of the fault current of OPGW for transmission lines with complex structures.