Devolopment And Research On Hydraulic Turbine Governor Based On PAC

Hydraulic turbine governor is an important controlling device of hydroelectric generating unit. Its performance will influence the electric power quality and hydroelectric generating unit's safe and reliable operation directly. Therefore,it has important significance to research the hardware and software of hydraulic turbine governor. At present,there mainly are hydraulic turbine governor based on single chip microcomputer, Industrial Personal Computer,Programmable Logic Controller,Programmable Computer Controller and so on. The thesis' main research is to develop the control software of the hydraulic turbine governor based on PAC.Firstly,it introduces the PAC,Wincon8000,I/O modules, VB .NET and WinconSDK API.Then,it introduces the general structure of hydraulic turbine governor and the used structure of hydraulic turbine governor based on PAC developed by the thesis,PID algorithm,basic regulation models and the working state of hydraulic turbine governor.Then,the hardware components of the hydraulic turbine governor based on PAC is introduced. Adanced Programmable Automation Controller Wincon8000 is brought into the turbine regulation field as the core hardware of hydraulic turbine governor by the thesis. It will measure frequency with frequency module. It will transfer the guide vane opening, control output of the servomotor and the water head input of hydropower station with analog module. It will receive commands and transfer state output with digital module.On the basis of PAC and Windows CE.NET,the software system of the hydraulic turbine governor based on PAC is described in detail. It first creats the project and then designs interfaces correspondence with programs accroding to the desired function of the hydraulic turbine governor. The procedure of the programming is as following. The variables are defined firstly.Then,the running state marks are judged accroding to the frequency,opening,water head signal and received commands obtained by the I/O modules of the Wincon8000.And then,the subprograms of start,noload,load,phrase modulation,load rejection and stop are called. Each subprogram chooses its regulation models,PID regulation laws and parameters and obtains the control outputs.After the software has been downloaded to the (PAC)Wincon8000 by TCP/IP or ActiveSync,connecting the hydraulic turbine governor based on PAC with hydro-turbine regulative simulation system, the function of the software is tested by simulation. It shows that the software can need the related requirements.Finally,the hardware and software system of different hydraulic turbine governors,which using PAC as its core hardware, using different electrical to mechanical converting equipments, are discussed.