According to the existing method including testing the frequency and establishing the relationship between moisture content and frequency, a corresponding instrument was designed. In order to further improve the accur...According to the existing method including testing the frequency and establishing the relationship between moisture content and frequency, a corresponding instrument was designed. In order to further improve the accuracy and rapidity of the system, a new approach to describe the relationship between the measurement error and the temperature was proposed. The error band could be obtained and divided into several parts（based on the range of temperature） to indicate the error value that should compensate the grain moisture content for the changes in temperature. By calculating the error band at the maximum and the minimum operating temperatures, as well as by determining the error compensation value from the error band based on the measurement moisture content, the final effective result was derived.展开更多
广域测量系统实测信息及故障集仿真结果构成了电网时空大数据,如何采用大数据技术对它们进行快速、高效地挖掘,实现大电网在线安全评估与防御是智能电网核心目标之一。从电网广域时空量测信息角度,解释了电网时空大数据的内涵,提出大电...广域测量系统实测信息及故障集仿真结果构成了电网时空大数据,如何采用大数据技术对它们进行快速、高效地挖掘,实现大电网在线安全评估与防御是智能电网核心目标之一。从电网广域时空量测信息角度,解释了电网时空大数据的内涵,提出大电网在线稳定态势评估与自适应防御体系(stability situation assessment and adaptive defense control system,ST-SADC)的整体架构及关键技术。ST-SADC以大数据分析与处理为底层技术支撑,基于广域时空量测信息实现大电网稳定态势量化评估及主导环节的反映射虚拟建模,进而实现轨迹型自适应防御控制。针对当前技术现状,讨论了ST-SADC循环递进式研究路线。该体系可进一步提高广域时空量测信息的挖掘深度和广度,最终提升大电网轨迹型智能化预警和防控能力。展开更多
基金Supported by the National Natural Science Foundation of China(51275145)
文摘According to the existing method including testing the frequency and establishing the relationship between moisture content and frequency, a corresponding instrument was designed. In order to further improve the accuracy and rapidity of the system, a new approach to describe the relationship between the measurement error and the temperature was proposed. The error band could be obtained and divided into several parts（based on the range of temperature） to indicate the error value that should compensate the grain moisture content for the changes in temperature. By calculating the error band at the maximum and the minimum operating temperatures, as well as by determining the error compensation value from the error band based on the measurement moisture content, the final effective result was derived.
文摘广域测量系统实测信息及故障集仿真结果构成了电网时空大数据,如何采用大数据技术对它们进行快速、高效地挖掘,实现大电网在线安全评估与防御是智能电网核心目标之一。从电网广域时空量测信息角度,解释了电网时空大数据的内涵,提出大电网在线稳定态势评估与自适应防御体系(stability situation assessment and adaptive defense control system,ST-SADC)的整体架构及关键技术。ST-SADC以大数据分析与处理为底层技术支撑,基于广域时空量测信息实现大电网稳定态势量化评估及主导环节的反映射虚拟建模,进而实现轨迹型自适应防御控制。针对当前技术现状,讨论了ST-SADC循环递进式研究路线。该体系可进一步提高广域时空量测信息的挖掘深度和广度,最终提升大电网轨迹型智能化预警和防控能力。
