基于全寿命周期成本的继电保护装置退出时间评估  

Evaluation for Exit Time of Relay Protection Devices Based on Life Cycle Cost

作　　者：徐志超[1,2] 李晓明[1] 杨玲君[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072 [2]南水北调中线干线工程建设管理局,北京市100038

出　　处：《电力系统自动化》2013年第21期151-155,共5页Automation of Electric Power Systems

摘　　要：为实现对继电保护装置退出运行时间的合理评估,首先通过基于Marquardt法的参数估计构建了设备失效率模型。然后分析了保护装置全寿命周期成本各项因素,建立了与失效率相关的设备年均成本模型,并提出以年均成本最小化为目标的设备退出时间评估机制。最后以某类型继电保护装置为例,求解了最优的设备退出运行时间。该方法对电力生产计划部门制定合理的设备更换策略具有一定的参考价值。In order to realize rational evaluation of the exit time of relay protection devices, an equipment failure rate model is developed first based on parameter estimation of the Marquardt method. Then, the equipment annual cost model related to the failure rate is built by analyzing the various factors of its life cycle cost. Meanwhile, an assessment strategy for equipment exit time based on the minimum annual cost is proposed. Finally, an example of a certain type of relay protection devices is given to seek the optimal equipment exit time. This method is useful for power production and planning departments to design rational equipment replacement policies.

关 键 词：Marquardt法 失效率模型 继电保护 全寿命周期成本 

分 类 号：TM774[电气工程—电力系统及自动化]