三相短路电流计算程序在水利工程中的应用

Application of Three-phase Short Circuit Current Calculation Program in Water Conservancy Project

在电气主接线方案设计、电气设备和导体选择中,都需要进行短路电流计算。针对目前短路电流计算程序所需原始数据较多、不适用于水利工程前期设计阶段的问题,文章提出以电力网络的数学模型为算法的理论支撑,运用VB编程技术,实现三相短路电流计算算法并加以阐述,通过实际工程案例,介绍该三相短路电流计算程序的操作方法和优越性。实践证明,程序操作简单,结果准确可靠,值得推广与应用。

It is necessary to calculate the short circuit current during main electrical wiring scheme design, electrical equipment and conductor selection. Aiming at the current problems that too much original data is required for short circuit current calculation program, which is not suitable for the preliminary design stage of water conservancy projects. The mathematical model of the power network is adopted as the theoretical support of the algorithm in the paper. VB programming technology is used for realizing and describing the three-phase short circuit current calculation algorithm. The operation method and superiority of the program for calculating three-phase short-circuit current are introduced through practical engineering cases. Practice shows that the program is simple in operation, the result is accurate and reliable, which is worthy of popularization and application.