基于改进役龄模型和全生命周期成本的继电保护装置服役年限确定  

Determination of service life for relay protection device based on improved age-reduction model and life cycle cost

作　　者：薛安成[1] 刘中硕 刘一民 郑少明 杜鹃 李公伟 XUE Ancheng;LIU Zhongshuo;LIU Yimin;ZHENG Shaoming;DU Juan;LI Gongwei(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;North China Branch of State Grid Corporation of China,Beijing 100053,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]国家电网公司华北分部,北京100053

出　　处：《电力自动化设备》2021年第3期219-224,共6页Electric Power Automation Equipment

基　　金：国家电网公司华北分部技术服务项目(华北电网继电保护设备异常原因分析及其与检验周期和项目间关系研究)(SGNC0000DKJS1900141)。

摘　　要：继电保护装置是电力系统的第一道防线,其合理的定期检修和退役对电网安全稳定运行和保证经济效益至关重要。基于具有线性衰减特性的役龄模型,结合继电保护装置的缺陷率特性曲线,同时计及继电保护装置的缺陷率和年均运行成本,在保证可靠性的前提下,以全生命周期年均运行成本最低为目标,构建了继电保护装置最佳服役年限确定模型。基于现场运行数据,对该模型进行了验证,得到了继电保护装置的最佳服役年限。结果表明该模型在继电保护装置检修技术改进或检修计划变更时,对确定继电保护装置最佳服役年限具有一定参考意义。Relay protection device is the first line of defense for electric power system,its reasonable regular maintenance and decommission are essential for the safe and stable operation of power grid and the guarantee of economic benefits.Based on the age-reduction model with linear attenuation characteristics,combined with the defect rate characteristic curve of relay protection device,meanwhile taking the defect rate of relay protection device and annual average operating cost into account,pursuing the lowest life cycle annual average operating cost on the premise of ensuring reliability,a model of optimum service life determination for relay protection device is constructed.Based on the field operation data,the model is verified,and the optimum service life of relay protection device is obtained.Results show that the model has certain reference significance for determining optimum service life of relay protection device when improving the maintenance technology or adjusting the maintenance plan.

关 键 词：继电保护装置 役龄模型 役龄回退因子 缺陷率 全生命周期成本 

分 类 号：TM774[电气工程—电力系统及自动化]