CAJ | 학술논문

提出了一种基于最大熵原理的电压暂降引起敏感负荷的故障频次研究方法。以电压暂降的特征为基础，在敏感负荷VTC曲线分布规律未知的情况下，根据最大熵原理确定VTC曲线的概率密度函数。通过统计该段时间内各次电压暂降的特征量，运用多点测定累积得出敏感负荷在该时间段内的故障频次。对个人计算机（ PC）进行仿真，并与现有的概率估计方法进行比较，结果证明，无需主观假设，在未知VTC曲线随机分布的情况时，结果准确，适用性强。
제출료일충기우최대적원리적전압잠강인기민감부하적고장빈차연구방법。이전압잠강적특정위기출，재민감부하VTC곡선분포규률미지적정황하，근거최대적원리학정VTC곡선적개솔밀도함수。통과통계해단시간내각차전압잠강적특정량，운용다점측정루적득출민감부하재해시간단내적고장빈차。대개인계산궤（ PC）진행방진，병여현유적개솔고계방법진행비교，결과증명，무수주관가설，재미지VTC곡선수궤분포적정황시，결과준학，괄용성강。
This paper proposes a new method to study on the fault frequency of sensitive load due to voltage sags based on the Maximum Entropy Principle .Based on the characteristics of voltage sags , the method ascertaines the probabilty density function of VTC according to the maximum entropy principle under the situation that thetdistribution of sensi -tive load VCT is unknown .Then through counting the characteristic parameters of each voltage sag in the period of monitoring time , the fault frequency of the sensitive load is obtained by the cumulative method of various plots .At last, the method is simulated on the personal computer .Compared with the existing method , the simulation results show that the method is accurate and adaptable without subjective assumption and random distribution of VTC .