As one of the energy bases of China, Xinjiang Uygur Autonomous Region has participated in a series of developing programs, such as The Western Development (2000), The Belt and the Road (2014), and The Global Energy Internet Strategy (2015), which signify that China places considerable importance to the sustainable development of the energy industry in Xinjiang. As an important part of the energy industry in Xinjiang, the emerging wind power industry in this region has developed rapidly in recent years. However, many problems have emerged, such as the abandoned wind power rationing, which seriously restricts the healthy development of the wind power industry. In this study, we introduce the development of the renewable energy industry and analyze the wind energy resources in Xinjiang. We mainly investigate the development situation and existing problems in the wind power industry. Then we focus on the problem of wind power curtailment, analyze the causes, and propose measures and strategies to alleviate this problem. Our findings will contribute to the sustainable development of the wind power industry in Xinjiang.
To solve the problem of grid-connected control of differential speed-regulating wind turbines, the wind turbine, transmission chain, speed-regulating motor, and generator model of the unit are constructed using the MATLAB/Simulink platform. The differential speed-regulating control system is designed on the basis of slip-frequency and fuzzy control theories. The speed control function and characteristics on maximum power tracing of wind turbine is tested via simulation. Meanwhile, the experimental bench for the differential speed-regulating wind power system is set up. Test results indicate that the generator speed is controlled by speed-regulating motor with output voltage and frequency that are approximately synchronized with those of power grid under idle load condition. The maximum wind-power utilization coefficient is maintained by fuzzy controller under the rated wind speed. Thus, the accuracy and efficiency of the designed control system is proven and provide important implications for further investigations on the grid-connected control of wind turbines with differential speed regulation.
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