CAJ | 학술논문

提出一种基于双曲正切函数相位特性高压长线路故障测距新算法,其在将故障位置作为已知条件看待并引入参考点与之匹配的思想基础上,构建了一个和双曲正切函数具有相同相位特性的测距函数.根据所取参考点与故障点相匹配时测距函数相位等于零这一特征进行定位.该方法理论上不存在伪根,所需运算量远小于传统方法的运算量,能有效克服传统方法存在的测距精度和测距速度此消彼长的矛盾.EMTDC仿真结果表明,该方法不受过渡电阻、故障位置和故障发生角等因素的影响,在线路参数严重不均匀情况下依然保持较高的测距精度,具有较好的鲁棒性.
제출일충기우쌍곡정절함수상위특성고압장선로고장측거신산법,기재장고장위치작위이지조건간대병인입삼고점여지필배적사상기출상,구건료일개화쌍곡정절함수구유상동상위특성적측거함수.근거소취삼고점여고장점상필배시측거함수상위등우령저일특정진행정위.해방법이론상불존재위근,소수운산량원소우전통방법적운산량,능유효극복전통방법존재적측거정도화측거속도차소피장적모순.EMTDC방진결과표명,해방법불수과도전조、고장위치화고장발생각등인소적영향,재선로삼수엄중불균균정황하의연보지교고적측거정도,구유교호적로봉성.
A fault locating algorithm based on the phase characteristics of hyperbolic tangent function is presented for high voltage long transmission lines, which builds a fault locating function with the same phase characteristics as those of hyperbolic tangent function by taking the fault location as the known condition and introducing a reference point to match it. When the reference point matches the fault location,the phase of fault locating function is zero. It has no false root in theory,and with less calculation loads than the traditional algorithms,it effectively avoids the contradiction between precision and speed. Results of EMTDC-based simulation indicate that,it is immune from the transition impedance,fault location, incidence angle,etc.,being high accurate and robust even when the line parameters are seriously asymmetrical.