小规模OPF计算程序（by FX），中间给出14节点测试系统，缺点计算时间较长（初学者想下点高手的源代码学习学习）-Small-scale OPF calculation program (by FX), in the middle gives a 14-node test system, the disadvantage of longer computing time (beginners would like to point master source code to learn from)