C语言编程求解三相石墨电极的阻值

C language programming for three-phase graphite electrode resistance

通过C语言编程求解三相不平衡阻性负载——石墨发热体相电阻是一种简单有效的途径。首先画出三相电路的电压电流矢量图,并根据电路定律推导出求解三相相电压的方程组,三相线电压和线电流通过给发热体通电试验得到,三相电阻根据相电压和相电流计算得到。其次,画出求解以上参数的C语言方框图,编写相应的C语言程序。最后在C语言环境下调试运行程序,将试验得到的几组线电压、线电流值分别输入,得到相应的相电阻。编程用到有限元分析法和循环嵌套语句及数据类型转化。此法简单易学,适应性强,结果精确,是一种值得推广的热场设计方法。

The phase resistance of graphite electrode for heating element which is one kind of three-phase unbalance load was solved by the C language programming. First, the three-phase voltage and current vector diagram were drawn, the equations of three phase voltage according circuit law were derived, three-phase line voltage and line current were tested through the power test, and three resistances were calculated through phase voltage divided by phase current. Second, the C language block diagram was drawn and the relevant C language program was written. At last, this program in C language environment was tested and run, several groups of line voltage and line current data were input and the phase resistances were obtained. The finite element analysis, nested loop statement and data type conversion were used in the programming process. This method is easy to master, and is one good way to design thermal field of graphite electrode.