Applicating Static Var Generator In Shaft Generator System

At present, the research on compensating reactive power using static compensation device is one of the most active areas in power system subject. As a new Var compensator and one of the FACTS equipments, the static Var compensator attracts extensive attention for its perfect performance such as smooth regulation of Var and dynamic capability. But at present, in the system of shaft generator, a synchronous condenser covers the system reactive power demands. The paper proposes the Static Var Generator (SVG) realization method by using IGBT inverters to replace the synchronous condenser, and achieve a better goal.Firstly, the paper discusses the characteristic of the reactive power compensator; analyze the superiority of the Static Var Generator (SVG). In this thesis, the compensation performance of SVG is studied according to dynamic compensation theory; several typical are summarized and their advantages and disadvantages are analyzed; the instantaneous reactive power theory and its application to reactive power control and detection are introduced.The paper designs an improved instantaneous reactive power detection; considering the precision and error of the phase lock loop (PLL) is inaccurate, the paper adopts a new method, which can achieve the obverse order of basic wave, and simulate the mentioned method, finally validate the feasibility of the method.The paper designs the parameter of the main circuit in Static Var Generator (SVG) and finish the design of software and hardware.