独立运行的风力发电系统.pptVIP

The Research of Stand-alone DFIG Systems and Its Control Stratagy Outline Applicable occasions and system components Applicable occasions: Stand-alone wind power systems are generally used in remote areas where are not covered by the conventional power grid. In addition to regular grid, we should promote stand-alone wind power systems vigorously and supply the power of daily lives and production for remote area residents (such as remote rural, pastoral area, island and so on). Applicable occasions and system components Advantages compared with general wind power generation : High mobility ; b. Diversification of energy use ; c. Easy installation. Applicable occasions and system components system components Due to the characteristics of the wind energy instability, for the stable power supply to the regional load,wind power generation system is often combined with other forms of energy such as solar energy, fuel, or adding energy storage devices ( batteries, fly wheels and so on), which can store up the wind energy . When wind energy is insufficient, energy storage devices supply to the loads together with wind power generation system. Applicable occasions and system components Structure of stand-alone DFIG systems The research of fixed-pitch wind turbine Wind turbines are the primary energy conversion parts in wind power generation system i. Its used to intercept the air flowing with the kinetic energy, and the part of the kinetic energy of wind turbine blades wind swept area is converted into mechanical energy. It not only determines the effective output power of the wind power generation system, but also directly affecting the safety of the crew and stable operation,which is one of the key components in the wind power generation system. According to the aerodynamics, the input power of the wind turbine: The research of fixed-pitch wind turbine Mechanical power output of the wind turbine: The research of fixed-pitch wind turbine