振动监测与状态评估是保障大型风电机组安全运行的重要技术手段和管理措施，特别在云贵高原冬季凝冻环境下抗凝冻试验风电机组的振动监测和状态评估显得尤为重要。风电机组叶片结冰的随机分布可能导致三支叶片质量不平衡和气动外形变化，加之机组叶片防/除冰需要而新增设备或辅材的安装差异，综合作用或将引发机组振动而产生设备安全隐患。文中采用主动气热法构造3台5MW抗凝冻试验风电机组，深入分析机组振动主要影响因素；利用 3台 5MW 抗凝冻试验机组历时 4个月运行期间的振动监测数据，计算机组 9个关键振动状态变量参数并结合特征量限值综合评估试验机组振动状态，通过纵向/横向对比判定每台机组振动状态及发展趋势。评估结果表明，3台试验机组振动烈度及差异较小，均可长周期安全运行，叶片结冰以及抗凝冻改造对机组振动影响不显著。

Vibration monitoring and condition assessment are crucial technical means and management measures for ensuring the safe operation of large wind turbines， especially in the winter freezing environment of Yunnan-Guizhou Plateau， the vibration monitoring and state assessment of the antifreezing test wind turbine is particularly important. The icing random distribution of the wind turbine blade may lead to mass imbalance and aerodynamic shape change among three blades， combined with installation differences of new equipment or auxiliary materials in three blades of wind turbine for antiicing/deicing requirement， so these factors may collectively induce severe vibration of the wind turbine to result with equipment safety hazards. This study employs the active aerothermal method to construct three 5MW test wind turbines， and the primary influencing factors of turbine vibration is analyzed deeply. The vibration monitoring data during four months from three 5MW antifreezing test turbines were employed to calculate 9 key turbine vibration condition variables and comprehensively evaluate the vibration condition in combination with characteristic limit values， and the vibration development trend of each turbine was judged by longitudinally and horizontally comparing. The assessment results indicate that the vibration intensity and its difference among three test wind turbines are smaller， which can operate safely for a long period， and the impact of blade icing and antiicing modifications on vibration is not significant.