35kV配电系统消弧线圈自动调谐技术应用

随着城市配电网的发展，电网的电容电流越来越大，电网中性点经消弧线圈接地已成为6～35kV城市电网减小单相接地电流、消除接地故障的一个重要手段。目前市场上自动调谐消弧线圈的种类很多，主要有调匝式、调容式、偏磁式和调气隙式等几种。针对调匝式自动调谐消弧线圈装置进行了研究，详细讨论了自动调谐消弧线圈的工作原理以及当前存在的各种问题，对其仍然存在的问题，给出了在满足正常状态和故障状态下均实现全状态补偿原理和实现方式，使消弧线圈的熄弧作用得到充分的发挥。

With distribution network developing, the grounding capacitive current has becamea more ann more higher, the neutral resonant earthing through peterson coil has been one of important measures to suppress the single phase to earth fault current and to clear the earth fault in 5-35kV city network There exist kinds of peterson coil , such as turn-regulation type , capacitor tuning type, Magnetic Bias and air gap inductance regulation arc-suppression coil . Then we study the instllation of exchange circle automatic tuning arc suppression coil, introduse more about the principle of automatic tuning arcsuppression coil and the existing problems. In order to overcome the existing problems, the paper proposes the all-state compensation principies which track the capacitor current in normal and fault states. So the all-state tuning principles can make good use of the function of Petersen coil to suppress the grounding arc .