The Simulation And Design On Static Var Compensator

The design of var compensator is becoming more and more important due to increase in reactive load and nonlinear impact load in the electrical network. The TCR static var compensator has many outstanding advantages. It can respond rapidly for change of electrical network and dynamic compensate reactive power, moreover it also can improve the power factor of the power supply system and suppress voltage fluctuations and the flickering. For those reasons, The TCR static var compensator is widely used in electric railway, arc furnace, rolling mill and many fields.The design of static var compensator is getting more complex and difficult with the complexity of nonlinear impact load. It is an important topic in research of power supply system, how to improve the accuracy of the design in the static var compensator which can work safety according to the expectation of the designer.The best method for this question is the simulation for the static var compensator in the power supply system nowadays. The effect, the stability and the security can be determined in the design stage by simulation. The design can be revised timely by simulation until satisfaction. The accuracy, the effect and the security of the SVC can be ensured. The principle of the SVC is researched thoroughly in the paper. The following aspects are included in this paper.(1) The types of the var power source have been introduced. The principle and the function of the SVC were clarified. The compensation capacity of the SVC in different conditions was determined, which is the theoretical foundation of parameter design in the 3rd chapter.(2) The types of the SVC have been listed. The principle and basis of The TCR static var compensator were analyzed. The filter has been designed and calculated, which is the theoretical basis of parameter design.(3) The computation of the impedance computation and the short circuit capacity and the main parameter of electrical energy quality have been completed. The parameter of the SVC has been optimized, which include the dynamic compensation capacity of the reactor controlled by thyristor and the assignment of the capacity in the filter condenser.(4) The simulation model has been established and researched with the MATLAB electrical power system's simulation software. The steady-state operation mode of the SVC and the combination operation mode of the filter have been simulated.