Method and device for identifying icing of blades of wind generating set

• Main Authors: YOON KYUNG-HOON, WANG QIJUN, YAO SEN, PENG XIANWEI, LI YING, ZHAO WEI, LEI YI, LAN JIE, YANG BIN, PENG XIAODI
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention discloses a wind generating set blade icing identification method and device, and the method comprises the steps: obtaining the rotating speed of a current set, carrying out the filtering processing of the rotating speed, carrying out the standard deviation calculation, comparing the standard deviation with a preset rotating speed fluctuation threshold value, and obtaining whether the rotating speed of the set has abnormal fluctuation or not at present; the current wind speed and the effective wind speed of the wind wheel face are obtained and filtered respectively, the deviation value of the filtered effective wind speed of the wind wheel face and the filtered measured wind speed is calculated, the deviation percentage is calculated, and whether wind speed power mismatching abnormity exists in the unit currently or not is obtained; according to the obtained current environment temperature and current environment humidity, a current environment index is calculated, and whether the blade freezing