July 12, the first leaf extension wing test unit in the new energy company in Shandong Laizhou Tang Zhen wind farm put into operation. The wing extension wing technology independently designed and manufactured by New Energy Experimental Research Institute is to extend the airfoil at the blade tip without disassembling the original blade so that the diameter of the impeller is increased from 77m to 80m and the area of ​​the swept wind is increased A 117.75 square meters, effectively improve the generating capacity of active units. As the technology is the first application in China, in order to ensure the safety of the unit, rigorous theoretical calculations and ground model tests were carried out before the transformation. The first day of operation of the unit experienced a strong wind test, the instantaneous maximum wind speed reached 14 m / s, the unit instantaneous maximum power reached 1547 kilowatts. After two days of data analysis, the unit vibration, pitch torque, temperature are in the normal range. The technology will effectively solve the unit design wind speed and local wind resources do not match the situation, and other efficiency than the way, with strong technical and economic competitiveness.