Design Of Compensation For Zhangjiakou Wind Farm

Wind power reactive power and power quality, is the most fundamental problems for wind power. This thesis studies the wind power grid generation of reactive power compensation device is leading in all electric energy-saving products.Improve the economic benefit of power grid, and improve power supply quality, the reactive power compensation device plays an important role.SVG can offer reactive power to the system of compensation, at the same time, to realize harmonic governance, but harmonic content is higher, the effect of using SVG is bad. But SVG combined with FC in used, not only can filter out harmonic, but also provide part of the reactive power to the system, This is a kind of high cost performance optimization combination.Through consulting the related literature at home and abroad, analyzed the working principle of wind turbine, the working principle of type doubly-fed generator and characteristic parameters, The relationship between wind power reactive power and active power, the source of the reactive power and adjusting method, wind power grid, etc.Analyed the working principle, system structure, control method of the compensation device, and inductive research the advantage and disadvantage of response speed, control system, harmonic current, phase adjustment, noise, energy dissipation, cover an area, costs,etc. Combined with the products of the company, focus on SVG from the device structure, analyzed the electrical principle, control method, using PWM technology to direct control. Analysis of the existing technical scheme, summed up the advantages and disadvantages of hanging SVG and SVG buck.Analysis of Zhangjiakou 100.5 MW wind power project in the environment, wiring, fan model, etc. Designed of the reactive power compensation based on SVG+FC, and then analyzed three of kinds of reactive power compensation.Finally, used PSASP to test, verify the correctness and effectiveness of the proposed method.