电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
7期
37-43
,共7页
灰色预测模型%传感器故障诊断%容错控制%系统重构
灰色預測模型%傳感器故障診斷%容錯控製%繫統重構
회색예측모형%전감기고장진단%용착공제%계통중구
grey prediction model%fault diagnosis of sensor%fault tolerant control%system reconfiguration
提出了一种新型的风力发电系统的主动容错控制策略。引入灰色动态预测模型，对传感器故障进行预测。基于风力发电系统模糊模型，设计容错控制器，利用邻近两状态反馈回路补偿失效回路的系统重构方法，重新确定系统反馈控制律。仿真结果表明在额定风速以下，传感器发生故障时系统的功率系数和叶尖速比均能保持在最优值，从而实现额定风速以下的最大风能捕获。
提齣瞭一種新型的風力髮電繫統的主動容錯控製策略。引入灰色動態預測模型，對傳感器故障進行預測。基于風力髮電繫統模糊模型，設計容錯控製器，利用鄰近兩狀態反饋迴路補償失效迴路的繫統重構方法，重新確定繫統反饋控製律。倣真結果錶明在額定風速以下，傳感器髮生故障時繫統的功率繫數和葉尖速比均能保持在最優值，從而實現額定風速以下的最大風能捕穫。
제출료일충신형적풍력발전계통적주동용착공제책략。인입회색동태예측모형，대전감기고장진행예측。기우풍력발전계통모호모형，설계용착공제기，이용린근량상태반궤회로보상실효회로적계통중구방법，중신학정계통반궤공제률。방진결과표명재액정풍속이하，전감기발생고장시계통적공솔계수화협첨속비균능보지재최우치，종이실현액정풍속이하적최대풍능포획。
A novel fault-tolerant control strategy for wind energy conversion system is proposed. Grey prediction model is introduced to diagnose the sensor fault. The Takagi-Sugeno (T-S) is adopted for modeling the wind energy conversion system and establishing fuzzy state feedback controller. When one of the sensors is failed, control action of the failed circuit is averagely shared by the remaining state feedback circuits, thus state feedback control-law is reconfigured. Experimental results show that when a sensor is failed, the system power coefficient and tip speed ratio can be still maintained at the optimal value under the rated wind speed, and the maximum wind energy capture could be realized.
