基于全程状态监测量的继电保护故障率模型  

Research on fault rate model of relay protection based on the whole process condition monitoring

作　　者：黄炳翔 梁欣瑜 李伟[1] 周俊宇 HUANG Bing-xiang;LIANG Xin-yu;LI Wei;ZHOU Jun-yu(Foshan Power Supply Company,China Southern Power Grid Guangdong Power Grid Company,Foshan 528000,China)

机构地区：[1]中国南方电网广东电网有限责任公司佛山供电局

出　　处：《电力科学与技术学报》2019年第4期148-157,共10页Journal of Electric Power Science And Technology

基　　金：广东电网有限责任公司佛山供电局生产技改项目(030600GS62190081)

摘　　要：继电保护的可靠运行对维持电网安全稳定具有重要作用。评估运行中的继电保护故障率是研究继电保护可靠性的一个关键性问题。该文通过分析某一地区的故障率分布,提出基于全程状态监测量与故障数据的广义比例故障率模型,并采用自适应同伦算法估计广义比例故障率模型的参数,求解继电保护故障率表达式。最后,3个算例结果表明:与牛顿同伦算法相比,自适应同伦算法求解故障率参数速度更快,收敛性更好;与威布尔模型相比,采用全程状态监测量与故障数据的广义比例故障率模型可以更好地拟合继电保护故障率,实时反映设备的运行状态,为设备检修类型的选择提供理论基础。The reliable operation of relay protection plays an important role in maintaining the security and stability of power grid. Evaluating the failure rate of relay protection in operation is a key problem to study the reliability of relay protection. Based on the analysis of fault rate distribution in a certain area, a generalized proportional hazard model(GPHM) is proposed based on the whole process state monitoring quantity and fault data at first. Next, the adaptive homotopy algorithm is utilized to estimate the parameters of GPHM and solve the expression of failure rate of relay protection. Finally, three case results are included for simulation and it is shown that: 1) compared with the Newton homotopy algorithm, the adaptive homotopy algorithm has a faster solution of failure rate parameters and better convergence;2) compared with the Weibull model, GPHM can better fit the fault rate of relay protection, reflect the running state of equipment in real time, and also provide the theory fundamentals for the selection of equipment maintenance type.

关 键 词：全程状态监测量 广义比例故障率模型 自适应同伦算法 可逆矩阵 

分 类 号：TM863[电气工程—高电压与绝缘技术]