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发明公开
CN107037388A 一种电压互感器二次负荷改进装置 无效 - 驳回

一种电压互感器二次负荷改进装置
摘要：
本发明涉及电力系统中计量用电压互感器技术领域，尤其涉及一种电压互感器二次负荷改进装置，具体是一种三相三线制电能表用电压互感器二次负荷改进装置。本发明包括被检电压互感器、标准电压互感器及互感器校验仪，是在被检电压互感器二次回路中并联负荷改进装置，通过对负荷改进装置开关的调节进行额定值和下限值的测量；然后将标准电压互感器和被检电压互感器的二次端子与互感器校验仪相连接。可以有效解决三相三线制电能表用电压互感器误差测量问题，可以代替传统检定的电压互感器负荷箱，直接并联在被检电压互感器二次回路中，不同于电压互感器负荷箱无需拆卸。具有结构简单，成本低廉，实施容易，无需携带电压互感器负荷箱等优点。
摘要（英）：

The invention relates to the technical field of metering voltage transformers in a power system, and especially relates to a device for improving a secondary load of a voltage transformer, specifically a device for improving the secondary load of a voltage transformer for a three-phase three-line electric energy meter. The device comprises a detected voltage transformer, a standard voltage transformer, and a transformer calibrator. The load improving the device is connected in parallel in a secondary loop of the detected voltage transformer, and the measurement of the rated value and a lower limit value are carried out through the on/off adjustment of the load improving device. The secondary terminals of the standard voltage transformer and the detected voltage transformer are connected with the transformer calibrator. The system can effectively solve a problem of error measurement of the voltage transformer for the three-phase three-line electric energy meter, can be used for replacing a conventional verification voltage transformer load box, is directly connected in the secondary loop of the detected voltage transformer in a parallel manner, is different from a voltage transformer load box, and does not need to be disassembled. The device is simple in structure, is low in cost, is easy to implement, and does not need to carry the voltage transformer load box.

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