变电站35kV消弧线圈档位的选择与计算分析

Selection and Calculation Analysis of Tap Position of 35 kV Arc Suppression Coil in Substation

介绍了中性点不接地系统的特点,基于电容电流、消弧线圈容量、脱谐度、中性点位移电压的计算公式,开发了变压器并列运行计算分析软件。以A变电站为例,计算和确定了35 kV消弧线圈档位,可供实际工作参考。

This paper introduces the characteristics of ungrounded neutral system,and develops a calculation and analysis software for parallel operation of transformer based on calculation formulas of capacitance current,arc suppression coil capacity,detuning degree and neutral displacement voltage.With substation A as an example,the tap position of 35 kV arc suppression coil is calculated and determined,which has guiding significance for practical work.