Application For SVG In The Wind Farm

In recent year. the wind power generate technology has become the research hot point. Now the capacity of the wind power generator becomes bigger and bigger, the cost becomes lower and lower, and the reliability is get higher. quit close to the normal fire power plant, so the wind power generate has a open vast vistas. The power generator for the wind unit is belong to the power without adjust, the short cycle fluctuate for the output is very notable, and at the different place, the direction and the speed for the wind is quit different, so the output of the same wind farm is quite different. If this variational power gets in the power grid, the power quality could not be guarantee. With the wind farm quantity increase, this issue is becoming more serious, even the power quality has become the main constraint for the capacity of the wind farm. The one of the important method to solve this problem is t use reactive compensation. In this paper, for capacity of idle work is not enough and voltage fluctuate wildly of the49.5MW project APL-1of Chun Hui Ya Dian Hui Teng Liang wind farm of CGNPC, we design the SVG to solve this problem.In this paper. the SVG background and working principle is instructed. We put Hui Teng Liang wind farm as an example, set the SVG on35kV side of the wind farm, that is using Insulated Gate Bipolar Transistor (IGBT) and the35kV bus to make a self-changing bridge circuit, parallel connected to the power grid or by the electric reactor to connect, adjust the voltage phase and amplitude of the bride circuit properly, to realize the reactive compensation. According to the reactive compensation after put the SVG into operation,the power quality has improved, voltage stability of wind farms is improved, while improving the power factor, reduce the wind power fluctuation on the influence of power grid voltage, solve the fai who beam wind farms in power quality unqualified problem. Therefore, SVG can effectively achieve the wind farms fast dynamic reactive power compensation, improve power quality, to ensure the safety of power grid wind turbine and long-term stable online operation.