基于联系数的输电系统可靠性评估  

Reliability Evaluation of Transmission System Based on Connection Number

作　　者：王磊[1] 张明文[2] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]河北省电力公司,河北石家庄050021

出　　处：《江苏电机工程》2010年第6期24-27,共4页Jiangsu Electrical Engineering

摘　　要：传统输电系统可靠性评估将可靠性数据作为确切值进行评估,但是由于客观条件的影响,部分可靠性数据是不确定的,这必然会导致评估不准确。在联系数理论和输电系统可靠性评估的基础上,提出了输电系统可靠性评估的新方法。该方法用联系数表示可靠性参数,通过联系数运算处理具有不确定性的可靠性参数,计算出具有确定项与不确定项的可靠性联系数指标。该方法可反映各原始参数不确定对可靠性指标的影响,能更好地评估系统可靠性的真实程度。通过分析IEEE-RBTS和IEEE-RTS79两个算例,表明了该方法的合理性和有效性。Traditional reliability evaluation of transmission systems use fixed value to evaluate reliability,but part of the reliability date is usually uncertain because of the impact of objective conditions,which will inevitably lead to inaccuracy of the evaluation.In this paper,a new method based on the theory of connection number and reliability evaluation of transmission systems is presented for evaluating reliability of transmission systems.The method expresses reliability parameters in connection number.The connection number theory is applied to deal with various uncertainties of reliability parameters to calculate the connection number indices with certainty and uncertainty.The method can reflect the influence of original parameters＇ uncertainty on reliability indices.which give a more refined degree of truth of system reliability.Analyzing results on IEEE-RBTS and IEEE-RTS79 show the rationality and effectiveness of the approach.

关 键 词：联系数 输电系统 可靠性评估 深度优先搜索算法 最小切负荷 

分 类 号：TM732[电气工程—电力系统及自动化]