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发明公开
CN104808049A 一种便携式变压器中性点电流监测装置 无效 - 驳回 复审申请

一种便携式变压器中性点电流监测装置
摘要：
本发明提供一种便携式变压器中性点电流监测装置，所述监测装置包括电源模块、信号采集模块、数据处理模块、存储模块和液晶显示模块；所述信号采集模块与数据处理模块单向连接，所述数据处理模块与存储模块双向连接，且与液晶显示模块单向连接，所述电源模块与信号采集模块、数据处理模块、存储模块、液晶显示模块均双向连接。本发明提供一种便携式变压器中性点电流监测装置，能够对电网中电力变压器的直流偏磁情况进行普测，同时可监测电力变压器中性点接地线上的直流电流、交流电流及全电流有效值，并为系统中的故障情况提供预警信号。
摘要（英）：

The invention provides a portable transformer neutral point current monitoring device, which comprises a power source module, a signal collection module, a data processing module, a storage module and a liquid crystal display module, wherein the signal collection module is unidirectionally connected with the data processing module; the data processing module is bidirectionally connected with the storage module and is unidirectionally connected with the display module; the power source module is bidirectionally connected with the signal collection module, the data processing module, the storage module and the liquid crystal display module. The invention provides the portable transformer neutral point current monitoring device, a direct current magnetic bias condition of a power transformer in a grid can be used for commonly measuring, effective values of direct current, alternating current and total current of an earthing wire at a power transformer neutral point can be measured, and an early warning signal can be provided for a fault condition of the system.

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