| In the development of China’s economy to have great progress today, thedevelopment of the rural economy is still relatively backward, the quality of electricenergy and electric power safety plays an important role in the development ofrural power grid. Large asynchronous motor, transformer and other large inductanceload exists, especially the impact, nonlinear load increasing, a lot of harmonic, reactivepower and other flows into the power grid, the grid voltage distortion, voltagefluctuation, flicker and three phase imbalance of power quality problems, components ofthe increase of various kinds of interference in the utility grid, lead to the powerquality is becoming worse and worse, serious impact on the safety of the electricequipment. No power compensation device compared with the traditional, without staticvar generator (SVG) can compensate the instantaneous reactive power, especially thenonlinear impulsive load, therefore become the of research focus reactive compensationtechnique. Taking into account the rural power grid power is small, and subjectto harmonic influence certain circumstances, has designed a stationary harmonicsuppression function without power generator.This paper introduce the significance of the topic, introduces the development statusof reactive power compensation technology and equipment, emphatically introducesthe current SVG reactive compensation device, analyzes the basic principle and thestructure without static var compensator, focuses on the application of non instantaneouspower theory in no power compensation device, and emphasis on the use of specificharmonic detection method. In the analysis of existing reactive compensationcontrol strategy, we put forward a reactive compensation control strategy for harmonicsuppression function, the simulation of the proposed control method proved byMATLAB software, proved the validity of the method.This paper finally introduces the design method of main circuit deviceparameters, and the design of the DSP software design based on SVG. |
