去年全球新增风电装机4200万千瓦,同比增长21%,全球风电连续多年保持高速增长势头。迄今为止,世界上已有82个国家在积极开发和利用风能资源。在未来十年里,我国可再生能源在能源结构中比例将达15%,其中最大份额是风电。到2020年的时候,装机将达到两亿千瓦。在风电场里,实际存在很多二次系统,所谓二次系统是针对一次发电系统,主要涉 Last year, the global installed capacity of wind turbines was 42 million kilowatts, an increase of 21% over the same period of last year. The global wind power maintained its rapid growth for many years in succession. So far, 82 countries in the world are actively developing and utilizing wind energy resources. In the next ten years, China’s renewable energy will reach 15% of its energy mix, the largest part of which is wind power. By 2020, the installed capacity will reach 200 million kilowatts. In the wind farm, there are actually many secondary systems, the so-called secondary system is a primary power generation system, the main