提出了一种适用于输电线路差动保护抗电流互感器(TA)饱和的新方法——电流极性比较法。
A new countermeasure to current transformer (TA) saturation, namely, current polarity comparison method, for differential current protection of transmission line is proposed.
将电气线路的三相线及中线通过零式电流互感器后，零式电流互感器会把剩余电流信号转换为电压信号。
Putting the three-phase lines and middle line of the electrical circuit through the zero current transformer, the residual current signal will be converted into the voltage signal.
然而电流互感器(CT)饱和会影响输电线路电流差动保护的可靠动作。
However, current transformer (ct) saturation is still affecting the reliability of transmission line differential protection.
本文论述了直流互感器在大功率晶闸管励磁系统中线路结构形式以及在激磁电流自动调节控制系统中所起的作用。
The paper presents the circuit structure type of the D. C. inductor in high power thyristor exciting system and the role of the D. C. inductor in the exciting current self-regulation control system.
但由于传统电磁式电流互感器存在的固有缺陷，很难从原理上根除其对线路保护造成的隐患。
However, because of the traditional electromagnetic transducer's native defect, it is hard to eradicate the trouble of it to the line's protection in principle.
从理论上分析配电线路出口故障时，电流速断和定时过电流保护拒动的原因，从而阐明电流互感器的响应特性对电流保护有很大的影响，最后提出相应的对策。
The causes of refusing action of over current protection when the short circuit arises at the beginning of distribution line have been theoretically analysed in this paper.
从理论上分析配电线路出口故障时，电流速断和定时过电流保护拒动的原因，从而阐明电流互感器的响应特性对电流保护有很大的影响，最后提出相应的对策。
The causes of refusing action of over current protection when the short circuit arises at the beginning of distribution line have been theoretically analysed in this paper.
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