| By the end of 2010, China's newly-added installed capacity of wind power reached 16 million kilowatts for the whole year, and the total installation capacity is 41.83 million kilowatts-making the country exceed American for the first time and the global leader in terms of total installation capacity. China's wind power industry has shown strong development momentum, however factors such as grid still restricted the use of wind power. The share of wind power in electricity consumption is still small, by the end of 2009, wind power only accounts for 1.85 percent of China's total installation capacity for power generation, and 0.75 percent of the total power generated.How to make the construction of the grid adapt the requirement of the rapid wind power development will become the biggest challenge that China's wind power industry would face. This paper will focus on the problem of how to enhance the ability of grid absorbing large amount wind farm, from the point of reinforcement of grid construction, conducted composite evaluation for different schemes of the integration of wind farm. (1) established the model of wind power generation system based on Monte Carlo Simulation method, conducted reliability analysis for different schemes of the integration of wind farm using probabilistic methods; (2) by turning reliability indicators into the economic ones and joining optimization goals, the most optimize scheme of the wind farm integration has been obtained considering both the reliability and economy; (3) from the network security perspective, conducted static voltage stability analysis for different schemes of the wind farm integration using electric power system simulation software PSASP, and all the comprehensive assessment of all schemes. Come to the conclusion that building the key contact line between wind farms and heavy-load regions is the key to improve the system reliability and security after the wind farm integration, and increase the capacity of grid absorbing wind power.
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