Intelligent And Reactive Power Control System Research And Development

The thesis firstly introduces the object, principle, significance and mathematics model of voltage and reactive-power control system in transformer substation. and analyzes the merit and demerit of existing designing and realizing methods. In the thesis, a kind of intelligent voltage and reactive-power fuzzy controller based on nzne.region controlling method is designed. Futhermore, the thesis proposes a method of using integral to reduce modulation times and restrain mistake, and provides the relization and simulation result of the fuzzy-integral method, and discusses its strongpoint and shortcoming.Considering the relization aspect, the system is designed for Windows 98/2000. To fulfill the need of network application, the approaches and the realization for distributed voltage and reactive-power control system are given in this thesis. The use of distributed control system not only retains the independence of voltage and reactive-power control installation, also makes the system more extensible and flexible, and easier to be shared by other systems. In addition, according to the need of sampling of voltage and reactive-power control system in Windows 98/2000, the method of using Windows Driver Model is presented to realize the sampling of the voltage and the current, and the program of Windows Driver Model is provided in this thesis.