基于电阻分流原理的电流互感器二次侧开路预判装置的研制

Research and Development of Anticipation Device for Open Circuit in Secondary Side of Current Transformer

本文基于电阻分流的原理,利用调档电阻的分流实时检测,确保电流互感器二次回路上的检修设备的回路完整性,防止出现开路。经过对现场电流互感器二次侧负荷的统计,得出合适的装置阻抗值,研制出一种安全可靠的电流互感器二次侧开路预判装置,实验证明其能够在不停电检修的工况中,对电流互感器二次侧检修段开路发挥很好的预防作用。

Online-testing in current of shifiting resistance is applied to ensure the integrated circuit in secondary side of current transformer basing on the theory of the shunt resistance,what could prevent open circuit, the suitable resistance value is counted because of the statistics in many actual values, the anticipation device for open circuit in secondary side of current is developed considering some important safety factors, the tests results show ideal effect of the device in the anticipation of open circuit in secondary side of current transformer