CAJ | 학술논문

针对同塔四回线故障测距方程难以求解的问题,通过将优化算法引入测距方程,提出一种基于蚁群算法的故障测距新方法.该算法基于分布参数模型,利用线路参数解耦后得到的两端同向正序基频故障分量,依据从线路两端分别推算至故障点电压幅值相等的原理列出故障测距方程.最后构造一元单峰值函数,引入蚁群算法对函数进行优化求解.通过PSCAD/EMTDC仿真验证了该算法的可靠性和精确性.仿真结果表明该算法不受线路故障类型、系统电源功角差、过渡电阻、故障位置等因素的影响,具有很强的工程实用价值.
침대동탑사회선고장측거방정난이구해적문제,통과장우화산법인입측거방정,제출일충기우의군산법적고장측거신방법.해산법기우분포삼수모형,이용선로삼수해우후득도적량단동향정서기빈고장분량,의거종선로량단분별추산지고장점전압폭치상등적원리렬출고장측거방정.최후구조일원단봉치함수,인입의군산법대함수진행우화구해.통과PSCAD/EMTDC방진험증료해산법적가고성화정학성.방진결과표명해산법불수선로고장류형、계통전원공각차、과도전조、고장위치등인소적영향,구유흔강적공정실용개치.
Through combining the ranging equation and optimization, a new method of fault location based on ant colony algorithm is presented to resolve the difficult ranging equation. Based on the distributing parameter transmission line model, the common positive sequence fundamental frequency fault component is obtained after decoupling the line parameters, the fault location function is educed according to the principle that the amplitude of fault point's voltage calculated from the two ends of a line is equal, then one unknown number and single peak function is constructed, and the ant colony algorithm is introduced to resolve the function. PSCAD/EMTDC proved it is reliable and accurate, the results of simulation indicate the algorithm is immune to the effect of fault type, power phase shift, fault impedance, fault position and other factors on locating precision, which has very strong practical value. This work is supported by National Natural Science Foundation of China (No. 51177066).