基于最小路算法的特高压直流换流站主接线可靠性评估  

Reliability evaluation of main wiring of UHVDC converter station based on minimum path algorithm

作　　者：任正 齐四清 窦宇宇 张怀勋 龚庆武[2] 赵洁[2] 梁忆琳 REN Zheng;QI Siqing;DOU Yuyu;ZHANG Huaixun;GONG Qingwu;ZHAO Jie;LIANG Yilin(Electric Power Research Institute,State Grid Inner Mongolia Eastern Electric Power Co.,Ltd.,Hohhot 010020,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,内蒙古呼和浩特010020 [2]武汉大学电气与自动化学院,湖北武汉430072

出　　处：《武汉大学学报(工学版)》2025年第2期261-268,共8页Engineering Journal of Wuhan University

基　　金：国网蒙东电力科技项目(编号:MD-058001)。

摘　　要：针对特高压直流系统换流站主接线系统,提出了基于最小路深度搜索算法的可靠性评估方法。针对主接线中元件建立状态模型,采用四状态模型全面考虑了元件的状态特性以及切换序列、运行方式等因素。在元件状态模型的基础上,根据复杂配电网络理论对主接线系统进行元件分区及计算,从而减少了大量的计算工作,提高了计算效率。最后基于深度搜索法对双12脉冲换流站主接线系统进行最小路遍历,根据最小路割集理论得到系统中的最小路集合,针对所得最小路集进行可靠性指标计算。算例计算结果表明,能量可用率为98.18%、总值等效停运时间为56.625 h,各种运行模式下的概率分布和频率分布结果良好,具有有效性和简便性。A reliability evaluation method based on minimum path depth search algorithm is proposed for the main wiring system of ultra-high voltage direct current(UHVDC)system converter station.A state model is established for the components in the main wiring,and the four-state model is adopted to comprehensively consider the state characteristics of the components,as well as factors such as switching sequences and operating modes.Based on the component state model,the main wiring system is divided into component zones and calculated according to the theory of complex distribution networks,thereby reducing a lot of computational work and improving computational efficiency.Finally,based on the deep search method,the minimum path traversal of the main wiring system of the dual-12 pulse converter station is carried out.According to the minimum path cut set theory,the minimum path set in the system is obtained,and the reliability index is calculated for the obtained minimum path set.The energy availability rate of the case calculated is 98.18%,and the total equivalent downtime is 56.625 h.The probability and frequency distribution results under various operating modes are good,indicating that it is effective and simple.

关 键 词：换流站 可靠性 最小路搜索 四状态模型 

分 类 号：TM722[电气工程—电力系统及自动化]