电力系统保护与控制2016，Vol.44Issue(12)：108-113,6.DOI:10.7667/PSPC151291
大风电机组变桨用超级电容模组健康状态在线监测方法研究
Online monitoring method of health state of ultracapacitor for wind turbine pitching
摘要
Abstract
With the safe operation of the whole wind turbine generator to be paid moreattention, the reliability of the ultracapacitor modules for wind turbine pitching hasbecome more and more important. For continuously monitoring to the health status of the ultracapacitor modules and ensuring the reliability, this paper presents an on-line monitoringmethodof the health state of the module. When wind turbines LVRT and feathering after power down, it can measure the electronic quantity that the ultracapacitor discharges respectively by open circuit voltage measurement methods and current integral measurement methods in the master system. The ratio of the difference of the calculated electronic quantity to the failure thresholds of theultracapacitor module determines the health state of the ultracapacitor module. Experimentalresults show that the master-controlled system can monitor the ultracapacitor module health status by the above methods, particularly when the ultracapacitoraging failure occurs, this method can continuously effectively monitor the health status of the ultracapacitorfor wind turbine pitching, thus improve the reliability of wind turbines for safe operation.关键词
风电机组变桨距系统/超级电容模组/健康状态/老化失效/在线监测Key words
wind turbine pitch system/ultracapacitor modules/health state/aging failure/online failure monitoring引用本文复制引用
石建,周腊吾,葛召炎,陈浩..大风电机组变桨用超级电容模组健康状态在线监测方法研究[J].电力系统保护与控制,2016,44(12):108-113,6.基金项目
国家自然科学基金青年科学基金项目(51207048)This work is supported by National Natural Science Foundation of China (No.51207048) （51207048）
