必威体育精装版风电场运维人员技能考试试卷（Latest wind, electric field operation and maintenance personnel skills examination paper）精品.doc

必威体育精装版风电场运维人员技能考试试卷（Latest wind, electric field operation and maintenance personnel skills examination paper） Wind farm operators in 2012 Skills examination paper (theoretical part) First, fill in the blanks (30 empty, 0.5 cents per minute, 15 points altogether) 1. frequency converter according to the main circuit way of classification, can be divided into voltage type inverter and current type inverter. 2. the engine room can be rotated in two directions. The direction of rotation is detected by the proximity switch. When the number of the circle in the same direction of the yaw limit is reached, the limit switch signal will be sent to the control unit, control unit and the quick stop, reverse unmoor. 3. the preventive maintenance of the wind turbine is regularly maintained in strict accordance with the maintenance schedule provided by the manufacturer. 4. when the power system is running, the frequency is controlled by the active power of the system, and the voltage is controlled by the reactive power of the system. The relationship between the resistance of the 5.PT100 sensor and the temperature conversion is as follows: when the resistance is 100, the temperature is 0 centigrade. 6. tickets should be two copies, a copy should be kept in place of work by the responsible person Shouzhi, another by Licensor receives. 7. if wind speed exceeds a limit, such as 5 or 10 minutes mean (average wind speed), 5 second average (gust speed), must stop working immediately. Maintenance and repair work shall not be carried out. The blade is located at any position between the work position and the oar position. The measured data points of the wind tower in the 8. wind farm are located at the height of the fan hub, and should include parameters such as wind speed, wind direction, temperature and air pressure. 9. increasing the tower height of the generator can reduce the influence of turbulence intensity. 10. the insulation level of the generator of the wind turbine is usually F clas