新能源场站汇集系统中性点接地方式探讨

Research of Neutral Ground Method of Collection Line System of Wind Farm

本文对风电场汇集系统四种中性点接地方式进行了梳理,包括经消弧柜接地、不接地、接地变压器经消弧线圈接地和经小电阻接地。针对这四种接地方式,分别阐述了优缺点及四种接地方式在国内外的衍变过程及现状,并给出了风电场汇集系统中性点接地方式选择的建议。

This essay discussing four neutral ground methods of collection line system of wind farm,including Arc-overvoltage Suppressor grounding method,neutral-point ungrounded method,Petersen-coil grounding method and Low-resistor grounding method.Secondly,the advantages and disadvantages of these methods are analyzed,followed by introducing their evolution process in both foreign countries and China.Finally,this essay gives the reasonable advice on choosing of neutral ground method of collection line system of wind farm.