针对火电厂循环水加酸控制系统存在控制系统对象难以建立、非线性和时变的特性，采用了改进的粒子群优化 算法优化PID参数，使得控制器可在不同环境温度下采用不同的PID参数．实际运行结果表明，该系统能够克服环境温 度带来的干扰，使循环水pH值被控制在给定值范围内．-Water plus acid control system for thermal power plant control system exists object is difficult to establish, nonli

全国700多个气温站的数据，可以用来进行实验练习以及科研需要。-Data temperatures of more than 700 stations nationwide, can be used for laboratory exercises and research needs.

Changes in ambient temperature and sunlight for a day depending on the time. data the sunshine and temperatures are obtained the application PVGIS-Changes in ambient temperature and sunlight for a day depending on the time. data the sunshine and