通过DDE、OPC客户端的底层通信方法,以较低的成本扩充组态王的功能.完善水电厂上位机系统的功能 利用组态王和H9000系统进行OPC通信实现AGC、AVC功能-Through the DDE, OPC client, the underlying communication method in order to lower the cost of expansion KingView function. Improve the function of the PC System of Hydr