【作者】 刘玲群；

【导师】 肖湘宁；

【作者基本信息】 华北电力大学 ， 电力系统及其自动化， 2001， 硕士

【摘要】 本论文在对电压凹陷和短时间断的定义、起因和影响因素进行阐述的基础上，着重探讨了如下两个问题：1）对临界距离法和故障点法这两种电压凹陷域的评估方法进行了比较和扩充后，提出将两种方法结合起来的思想，并将其应用于IEEE RBTS （Roy Billionton TestSystem），从而提高了计算凹陷域的准确度、减小了计算量。2）为计及电压凹陷和短时间断对配电系统可靠性的影响，本论文以IEEE配电系统可靠性评估试验系统DRTS（Distribution Reliability Test System）为例，分别用故障模式后果法和蒙特卡洛（Monte-Carlo）模拟法这两种可靠性评估方法计算配电系统可靠性。通过与原有结果进行比较，得出结论：考虑电压凹陷和短时间断后，配电系统可靠性指标会降低。更多还原

【Abstract】 The characteristic quantities of voltage sags and short interruptions and the factors affecting the voltage sags are analyzed first. Then the paper studies the following two questions: 1) A comparison between the critical distance method and the fault positions method, which are two methods for voltage sag estimation, is made and the two methods are extended. Then the idea of the two methods combination is presented and used to calculate the exposed areas of IEEE RBTS (Roy Bilhinton Test System), and more accurate results are got with less calculation. 2) To analyze the influences of voltage sags and short interruptions to distribution reliability, the reliability indexes are calculated by the FMEA (Failure Mode Effects Analysis) method and the Monte-Carlo simulation method on IEEE DRTS (Distribution Reliability Test System) respectively. According to the comparison with the original results, the paper reaches the conclusion that the distribution system reliability is lower when voltage sags and short interruptions are taken into account.更多还原