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基于脉冲转换温度传感方法的电力设备温度监测系统研究 被引量:15
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作者 王海宝 王峥 +3 位作者 周娴姊 高阳 庞振江 刘洋 《电力系统保护与控制》 EI CSCD 北大核心 2020年第24期180-187,共8页
为了准确测量电力系统中设备关键节点的温度变化,综合考虑绝缘和电磁兼容要求,提出一种基于脉冲转换温度传感芯片的电力设备温度监测系统。该系统采用射频识别技术进行通信,同时采用蒙特卡洛分析法确定了传感器芯片误差修正方法,并提出... 为了准确测量电力系统中设备关键节点的温度变化,综合考虑绝缘和电磁兼容要求,提出一种基于脉冲转换温度传感芯片的电力设备温度监测系统。该系统采用射频识别技术进行通信,同时采用蒙特卡洛分析法确定了传感器芯片误差修正方法,并提出误差修正公式。最后,在开关柜上进行实际测试。结果显示,本系统可真实反映温度变化,提升了温度测量精度,为准确实现电力设备温度监测提供了一种有效方法。 展开更多
关键词 脉冲转换 射频识别技术 蒙特卡洛分析法 电力设备 温度监测
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Probability calculation of rebars corrosion in reinforced concrete using css algorithms 被引量:3
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作者 Mohsen-Ali Shayanfar Mohammad-Ali Barkhordari Mohammad Ghanooni-Bagha 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第8期3141-3150,共10页
Reinforcement inside the concrete is protected from corrosion and its damages until several years after the construction. After corrosion initiation, the cross section of reinforcement begins to reduce and often load ... Reinforcement inside the concrete is protected from corrosion and its damages until several years after the construction. After corrosion initiation, the cross section of reinforcement begins to reduce and often load bearing of the reinforced concrete structure will be reduced significantly. Corrosion of reinforcements in concrete in polluted and contaminated areas can occur in two ways: chloride and carbonation. In this work, meta-heuristic approach of charged system search(CSS) is used to calculate corrosion occurrence probability due to chloride ions penetration. The model efficiency is verified by comparing the available examples in technical literature and results of Monte Carlo analysis. According to the analyses performed, using different probabilistic distributions regardless of probabilistic moments based on real distribution leads to diverse results. In addition, influence of each effective parameter in corrosion occurrence varies by changing other parameters. 展开更多
关键词 reinforced concrete reliability index chloride diffusion CARBONATION charged system search (CSS) optimization
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