基于FTA-NSMC法的风电场直流汇集系统可靠性评估  

Reliability Evaluation of DC Collection System in Wind Farms Based on FTA-NSMC Method

作　　者：刘君怡 樊艳芳[1] 白雪岩 洪雅琪 LIU Junyi;FAN Yanfang;BAI Xueyan;HONG Yaqi(School of Electrical Engineering,Xinjiang University,Urumqi 830046,China;State Grid Hubei Shiyan Power Supply Company,Shiyan 442000,China)

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830046 [2]国网湖北省电力有限公司十堰供电公司,湖北十堰442000

出　　处：《智慧电力》2025年第1期82-89,共8页Smart Power

基　　金：国家重点研发计划资助项目(2021YFB1507000);“天山英才培养”培养计划(2022TSYCLJ0019)。

摘　　要：相比于传统交流汇集系统风电场直流汇集系统能有效避免损耗大、谐波谐振等问题,而汇集系统作为风电并网的重要环节,其可靠运行是保障电能顺利送出的关键。因此,针对传统非序贯蒙特卡洛法(NSMC)在评估风电场直流汇集系统可靠性时,存在对系统运行状态的无效判断的缺陷,提出一种基于FTA-NSMC的风电场直流汇集系统可靠性评估方法。首先,获取风机出力状态的概率分布,并建立各组成设备的停运概率模型。其次,利用故障树法(FTA)分析设备故障与系统故障之间的逻辑关系,并在此基础上通过NSMC判断系统运行状态。最后,通过算例验证了所提可靠性评估方法的计算效率更高,在所提3种拓扑结构中直流并联型风电场汇集系统的可靠性最高。Wind farm DC collection system can effectively avoid the problems of large loss and harmonic resonance existing in the traditional AC collection,and the reliable operation of the collection system,as an important link in wind power integration,is key to the smooth delivery of power.Therefore,this article proposes an FTA-NSMC based reliability assessment method for the wind farm DC collection system in response to an invalid judgment of the system operation state in evaluating the reliability of the wind farm DC collection system with the traditional non-sequential Monte Carlo(NSMC).Firstly,the probability distribution of wind turbine output status is obtained,and the outage probability models for each component equipment are established.Then,the fault tree analysis(FTA)is used to analyze the logical relationship between equipment failures and system failures,and based on this,the operating status of the system is determined through NSMC.Finally,the examples are given to verify the high computational efficiency of the proposed evaluation method.By comparison,the wind farm collection system with DC parallel structure has optimal reliability.

关 键 词：可靠性评估 风电场 直流汇集 拓扑结构 FTA-NSMC 

分 类 号：TM614[电气工程—电力系统及自动化]