On September 10, 2021, more than 20 inspectors from Shandong Taikai Testing Co., Ltd. went to Chengfengling Wind Farm in Wuzhai County, Xinzhou City, Shanxi Province. After 5 days and nights of continuous fighting, the preventive test for the entire station equipment of the 220kV wind farm was completed, which ensured the smooth power transmission in the early morning on September 16, and has been unanimously praised by users.