用BP网络神经算法去辨识一个具有大迟延的火电厂给水环节的闭关系统，通过自己编制的源代码进行计算之后，效果能达到理想的要求。-BP network neural algorithm to identify the closed-door system of a thermal power plant water supply links with large delay and achieve the desired effect is calculated through the preparation of their own source code.