摘要
为更符合实际地评估断路器的开断能力裕度,需要考虑感应电动机对短路电流的贡献。以C++语言编程为依托,实现节点类型的转换、负荷分配的计算以及感应电动机参数BKD文件形式的导出等功能。利用"胶水"语言Python的良好粘合性及可移植性作为中间粘合剂实现C++程序与PSS/E内置各功能程序的结合,完成PSS/E BKDY模块考虑动态负荷的短路电流衰减计算。利用改进模块和PSS/E暂态稳定模块,考虑动态负荷对经典三机九节点电网进行了短路电流周期分量衰减计算,两者的计算结果非常接近,表明改进模块具有较强的精准性及实用性。
In order to evaluate the breaking capacity margin of the circuit breaker more accurately,it is necessary to consider the contribution of induction motor to short-circuit current.Taking the C++language programming as the basis,the system realized the conversion of node types,the calculation of load distribution and the export of induction motor parameters in BKD file form etc functions.Because the C++program couldn't be directly compatible with the PSS/E's built-in program,therefore the"glue"language Python,which had good adhesion and portability,was used as an intermediate binder to achieve the combination of C++program and PSS/E built-in function program.The calculation about the attenuation of short-circuit current could be completed through the PSS/E BKDY module under considering the dynamic load.This paper used both the improved PSS/E BKDY module and PSS/E transient stability module and considered the dynamic load to carry out the short-circuit current periodic component attenuation calculation for the classic three-machine nine-node grid.The very close calculated results show that the improved module possesses the stronger accuracy and practicability.
作者
王晓虎
闫宇星
WANG Xiao-hu;YAN Yu-xing(Suzhou Industrial Park Blue Sky Gas Cogen-Power Co., Ltd, Suzhou 215024, China)
出处
《电工电气》
2017年第12期26-32,共7页
Electrotechnics Electric
作者简介
王晓虎(1986-)，男，工程师，本科，从事燃机管理工作；;闫宇星(1987-)，男，助理工程师，硕士，从事电气检修工作。
