作者：丁恒春¹, 巨汉基¹, 祝恩国², 余力³, 袁瑞铭¹, 田海亭¹, 杨怀庄³

作者单位：1. 国网冀北电力有限公司电力科学研究院, 北京 100045;
2. 中国电力科学研究院, 北京 100192;
3. 威胜集团质量中心, 湖南 长沙 410205

关键词：电气工程;加速寿命试验;威布尔分布;Peck模型;采集终端

摘要：

为保证用电信息采集系统的长期稳定运行,根据采集终端的硬件构造和功能特点,研究采集终端可靠性特征量的预测方法。利用威布尔分布模型建立采集终端的寿命分布函数,通过开展温度湿度加速寿命试验获得60只样本在4种应力水平下的失效数据,观察到失效类型主要为通信失效和模拟量测量失效。基于Peck模型推导出正常使用条件下的采集终端可靠寿命估计值。利用开发的可靠性特征量预计软件,计算得到某型号集中器在可靠度要求为0.9时的可靠寿命约为6.6年,计算结果基本符合现场运行情况。

Research on reliability experiment of electric energy data acquire terminal

DING Hengchun¹, JU Hanji¹, ZHU Enguo², YU Li³, YUAN Ruiming¹, TIAN Haiting¹, YANG Huaizhuang³

1. State Grid Jibei Electric Power Co., Ltd., Research Institute, Beijing 100045, China;
2. China Electric Power Research Institute, Beijing 100192, China;
3. Quality Centre of Wasion Group, Changsha 410205, China

Abstract: Terminal reliability indexes need to be evaluated scientifically to ensure the long-term steady operation of the electric energy data acquisition system. A method to predict terminal reliability is proposed according to the hardware construction and functional characteristics of the terminal. The Weibull distribution function is used to model the life distribution of the terminal. The temperature and humidity constant-stress accelerated life test is carried out to attain the failure data of 60 samples at 4 different stress levels. It is observed that communication failure and analog measurement failure are made up of the main failure type. The reliability life under normal conditions is estimated with the Peck model. Reliability characteristic quantity prediction software is developed and the reliable life of this concentrator model is computed with the software to be about 6.6 years when the reliability is required to be 0.9. The calculation result is basically consistent with the actual result of field operation.

Keywords: electrical engineering;accelerated life test;Weibull distribution;Peck model;data acquire terminal

2016, 42(4): 136-139,144  收稿日期: 2015-07-28;收到修改稿日期: 2015-09-23

基金项目: 华北电力科学研究院有限责任公司自有资金项目(KJZ14044)

作者简介: 丁恒春(1967-),男,河南孟津县人,高级工程师,硕士,主要从事电能测量技术研究和管理工作。

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