光伏系统中接地变压器及消弧线圈装置的计算选型  

The selection method of the grounding transformer and arcsuppression coil equipment in PV generation system

作　　者：吕丹 潘甲龙 

机构地区：[1]特变电工新疆新能源股份有限公司,陕西西安710065

出　　处：《可再生能源》2013年第9期18-20,25,共4页Renewable Energy Resources

摘　　要：在大型光伏发电系统中，由于使用高压电力电缆，当发生单相接地时，接地电容电流严重超过标准。文章针对系统接地变压器接入消弧线圈的中性点接地方式，深入研究了光伏电站中接地变压器及消弧线圈的容量计算方法和设备选型：给出了在不同电压等级下10—50MW光伏电站的装置容量计算和选型方法；在建成项目中验证了算法的正确性和适用性，为大型光伏电站优化设计提供参考依据。Because of using high voltage power cable, one-phase grounding capacitive current could be more than the rated value seriously in large-scale PV generation system. The grounding transformer and arc-suppression coil could solve that problem effectively. The calculation and selection method of the grounding transformer and arc-suppression coifs capacities are studied. The calculation and selection method for 10-50 MW PV systems at different voltages are proposed, which have been applied into competed projects and provide a basis for optimal design for other PV generation systems.

关 键 词：光伏发电系统 接地变压器 消弧线圈 

分 类 号：TM615[电气工程—电力系统及自动化] TM403