CAJ | 학술논문

为了研究220V 低压线路接触不良放电的一般规律，系统的开展了低压线路接触不良放电的模拟试验。在大量试验的基础上，总结了低压线路接触不良放电的一般规律：相线和中性线接触不良放电时相线电压波形存在相同的放电多发区域，该区域的放电次数均达到最大放电次数的70％，相位区间分别为0°～20°、40°～80°、100°～140°、160°～200°、220°～260°、280°～320°、340°～360°。该相位分布规律不随接触类型、间隙大小、负荷类型和负荷大小的改变而出现偏移或缺失；在电流增大到一定值，接触不良放电的平均放电量随不良接触面积和间隙的增大而线性增大且值均大于25pC；最后由 ANSYS 仿真结果分析了低压接触不良放电影响因素的放电机理。
위료연구220V 저압선로접촉불량방전적일반규률，계통적개전료저압선로접촉불량방전적모의시험。재대량시험적기출상，총결료저압선로접촉불량방전적일반규률：상선화중성선접촉불량방전시상선전압파형존재상동적방전다발구역，해구역적방전차수균체도최대방전차수적70％，상위구간분별위0°～20°、40°～80°、100°～140°、160°～200°、220°～260°、280°～320°、340°～360°。해상위분포규률불수접촉류형、간극대소、부하류형화부하대소적개변이출현편이혹결실；재전류증대도일정치，접촉불량방전적평균방전량수불량접촉면적화간극적증대이선성증대차치균대우25pC；최후유 ANSYS 방진결과분석료저압접촉불량방전영향인소적방전궤리。
To study the law of discharge for contact failure of 220V low voltage line, a series of simulation experiments are carried out in the paper.Based on the results, the general law of discharge is summarized , which shows that same frequent discharge regions exist in phase voltage waveforms when the discharge happens due to poor contact of phase line and neutral line.The number of discharge reaches 70% of the maximum number of discharge.The phase regions are 0°~20°、40°~80°、100°~140°、160°~200°、220°~260°、280°~320°、340°~360°, and the phase distribution law does not change with contact type , gap size, load category and load size.When the current increases to a certain value, the average discharge magnitude of poor contact linearly increases with gap size and contact area , and the value is greater than 25 pC.Finally, analysis on the discharge mechanism of poor contact and the factors affecting the poor contact discharge are given with ANSYS simulation results .