考虑可修多状态的输电线路可靠性评价模型-电力系统保护与控制.pdfVIP

第 38 卷 第 4 期 电力系统保护与控制 Vol.38 No.4 2010 年2 月 16 日 Power System Protection and Control Feb.16, 2010 考虑可修多状态的输电线路可靠性评估模型 1 2,3 何金定 ，贺星棋 （1.云南电力调度中心，云南 昆明 650011；2.四川大学电气信息学院，四川 成都 610065； 3.四川省电力公司直流运行分公司，四川 成都 610041） 摘要：为了能够更好评估输电线路的可靠性，结合运行实际考虑影响线路可用性的外部因素，提出用 Markov 模型计算输电 线路可靠性指标的方法。在常规的维护、完好状态之外，通过在模型中考虑日常维护工作对线路可靠性的影响引入待维护状 态，建立能够反映线路当前状态的相应的状态空间图，并应用状态空间图求解系统的可靠性指标。计算结果表明在一定范围 内适当增加线路的日常有效维护能够有效提高线路的可靠性，对于状态检修的应用有重要的参考意义。 关键词：电力系统；输电线路；可靠性；马尔可夫 Evaluation model of reliability for overhead transmission line with considerations of repairable multi-state 1 2,3 HE Jin-ding , HE Xing-qi (1. Yunnan Electric Power Dispatching Center, Kunming 650011, China; 2. School of Electrical Engineering and Information, Sichuan University, Chengdu 610065，China; 3. DC Operation Branch, Sichuan Electric Power Company, Chengdu 610041, China) Abstract: A Markov analysis technique is used to calculate reliability measures for overhead transmission line that involve several typical reliability related factors. Considering the effectiveness of routine maintenance, awaiting maintenance state is introduced and state-space graph that can reflect the current running state is established. The calculations of reliability measures can be obtained by state-space graph. The results show that the routine maintenance work within a certain appropriate range can effectively improve the reliability of the line. The technique has important reference value for the practical application of condition-based maintenance. Key words: power system; transmission line; reliability; Markov 中图分类号： TM726.1 文献标识码：