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消弧线圈是一个具有铁心的可调电感线圈

网址:www.xiaohuxianqua.cn  2021-06-23  作者:admin    阅读:

消弧线圈是一个具有铁心的可调电感线圈,接地电流通过消弧线圈呈电感电流,当单相出现短路故障时,流经消弧线圈的电感电流与流过的电容电流相加为流过短路接地点的电流,电感电容上电流相位相差180度,将接地电流补偿成较小的数值或接近于零。当两电流的量值小于发生电弧的最小电流时,电弧就不会发生,以防止电弧重燃,从而有效地降低过电压值,消除了接地处的电弧以及由此引起的各种危害,也不会出现谐振过电压现象保定平面设计培训 收费岛模具 挡土墙模具 防撞墙模具 防撞墙模具 防撞护栏模具 大棚遮阳网 遮阴网。电力系统配电线路经消弧线圈接地,为小电流接地系统的一种,10-66kV电压的等级下的电力线路多属于这种情况。
The arc suppression coil is an adjustable inductance coil with an iron core. The grounding current is an inductive current through the arc suppression coil. When a single-phase short-circuit fault occurs, the inductive current flowing through the arc suppression coil and the current flowing through the capacitor are added to form the current flowing through the short-circuit grounding point. The phase difference of the current on the inductance and capacitance is 180 degrees, so the grounding current is compensated to a smaller value or close to zero. When the value of the two currents is less than the minimum current of the arc, the arc will not occur, so as to prevent the arc from re igniting, so as to effectively reduce the over-voltage value, eliminate the arc at the grounding point and the harm caused by it, and there will be no resonance overvoltage phenomenon. The distribution line of power system is grounded by arc suppression coil, which is a kind of small current grounding system. The power line with voltage of 10-66kv mostly belongs to this situation.

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