配电网余能发电机超瞬态电抗的选择方法  

Selection Method of Super-transient Reactance of Waste Energy Generator in Distribution Network

作　　者：杨冶 孙震 郑伟 巴月娥 高贵军 李鹏 YANG Ye;SUN Zhen;ZHENG Wei;BA Yue-e;GAO Gui-jun;LI Peng(Angang Group Engineering&Technology Co.,Ltd.,Anshan 114021)

机构地区：[1]鞍钢集团工程技术有限公司,鞍山114021

出　　处：《冶金设备管理与维修》2022年第2期61-63,66,共4页Metallurgical Equipment Management and Maintenance

摘　　要：余能发电机接入配电网中会导致配电系统的短路容量大幅度增加,而短路电流的增加与发电机的超瞬态电抗值有着直接关系,文章分析了发电机并网后的短路电流计算方法,利用EXCEL的拟合曲线找到了短路电流与电抗值的量化关系,并给出了相关的计算公式。The waste energy generator paralleled in distribution network will cause a substantial increase of the short-circuit capacity in distribution system.The increase of short-circuit runent has a direct relation with super-transient reactance value of the generator.Make an analysis on the calculation method of short-circuit current after grid-connection.The quantitative relation between short-circuit cuiTent and reactanre is found by means of EXCEL fitted curve,and the related calculation formula is given.

关 键 词：短路电流 超瞬态电抗 拟合曲线 

分 类 号：TM7[电气工程—电力系统及自动化]