接地变压器式消弧线圈的电气性能

Electric performance of arc-suppression coil based on grounding transformer

根据我国6kV和10kV中压配电网一般均为△接线、无辅助中性点供消弧线圈接入的特点,设计了一种新型的、性能优良的、制造成本相对低的接地变压器式消弧线圈。电气性能分析、实验室试验和电网运行均证明它具有调感线性度好、谐波可控、调谐深度可变、调感速度快、调谐方式简单灵活等特点。所有调节控制元件均在二次低压侧,不仅工作安全可靠,而且还有利于降低控制设备的成本。

Considering the common characteristic of trigonal connection, the auxiliary neutral point is not available to connect to arc-suppression coil in 6 ＆ 10 kV medium-voltage distribution network in China. A novel arc-suppression coil was contrived based on grounding transformer with excellent performance and low manufacture costs. It has the advantages of fine linearity of inductance tuning, controllability of harmonic, changeability of synonym tuning depth, celerity of inductance tuning and agility of tuning mode etc., which approved by performance analysis, experimentation and operational practice. The arc-suppression coil works reliably and safely due to the regulative and control cells in the secondary-side, and has benefits to decreasing the cost of control appliances.