CAJ | 학술논문

分析比较了元件状态持续时间采样(state duration sampling，SDS)和等时间间隔采样(time interval sampling， TIS)2种常用序贯蒙特卡洛仿真方法在电力系统可靠性评估中的应用差异。针对SDS方法执行效率低但精度高，而TIS方法计算速度快但精度不足的特点，提出通过选择合适的采样间隔，并采用修正系数对与采样次数直接有关的电力不足持续时间(LOLD)指标进行修正，来改善TIS方法的仿真精度和计算速度。IEEE-RTS79测试系统的仿真结果验证了所提方法的有效性，并且表明修正后的TIS方法在系统故障率增加时效率优势更加明显。
분석비교료원건상태지속시간채양(state duration sampling，SDS)화등시간간격채양(time interval sampling， TIS)2충상용서관몽특잡락방진방법재전력계통가고성평고중적응용차이。침대SDS방법집행효솔저단정도고，이TIS방법계산속도쾌단정도불족적특점，제출통과선택합괄적채양간격，병채용수정계수대여채양차수직접유관적전력불족지속시간(LOLD)지표진행수정，래개선TIS방법적방진정도화계산속도。IEEE-RTS79측시계통적방진결과험증료소제방법적유효성，병차표명수정후적TIS방법재계통고장솔증가시효솔우세경가명현。
The differences of two kinds of commonly used sequential Monte Carlo simulation methods, namely the state duration sampling (SDS) and time interval sampling (TIS), applied in power grid reliability assessment are analyzed and compared. In allusion to the features of low efficiency and high accuracy of SDS method and insufficient accuracy and high computation speed of TIS method, it is proposed by means of choosing suitable sampling intervals and using correction coefficient to correct the loss of load duration (LOLD) indicator directly related to sampling times to improve the simulation accuracy and computing speed of TIS method. The effectiveness of the proposed method is validated by simulation results of IEEE-RTS79, and it is indicated that the modified TIS method possesses evident superiority in efficiency while the power grid failure rate increases.