电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2013年
4期
7-12
,共6页
风电机组%电磁耦合器%惯性反馈%转速特性%稳定性分析
風電機組%電磁耦閤器%慣性反饋%轉速特性%穩定性分析
풍전궤조%전자우합기%관성반궤%전속특성%은정성분석
wind turbine%electromagnetic coupler%inertia adjustment%speed characteristic%stability analysis
对运行在最大风能捕获状态,风力机负载转矩采用转速离散惯性反馈控制的基于电磁耦合器调速的变速恒频风电机组的风力机转速特性进行理论分析和仿真计算.分析了单点扰动和持续扰动下风力机转速特性的稳定性,对单点扰动下惯性时间常数、扰动的大小、风速等对稳定性的影响,以及持续扰动下风速的频率和变化幅值对稳定性的影响进行了详细分析.提出了惯性时间常数的设计原则.
對運行在最大風能捕穫狀態,風力機負載轉矩採用轉速離散慣性反饋控製的基于電磁耦閤器調速的變速恆頻風電機組的風力機轉速特性進行理論分析和倣真計算.分析瞭單點擾動和持續擾動下風力機轉速特性的穩定性,對單點擾動下慣性時間常數、擾動的大小、風速等對穩定性的影響,以及持續擾動下風速的頻率和變化幅值對穩定性的影響進行瞭詳細分析.提齣瞭慣性時間常數的設計原則.
대운행재최대풍능포획상태,풍력궤부재전구채용전속리산관성반궤공제적기우전자우합기조속적변속항빈풍전궤조적풍력궤전속특성진행이론분석화방진계산.분석료단점우동화지속우동하풍력궤전속특성적은정성,대단점우동하관성시간상수、우동적대소、풍속등대은정성적영향,이급지속우동하풍속적빈솔화변화폭치대은정성적영향진행료상세분석.제출료관성시간상수적설계원칙.
When the variable speed constant frequency wind turbine based on electromagnetic coupler speed control, whose load torque uses the speed discrete inertial feedback, works at the state of maximum power point tracking, the speed characteristics of wind turbine is analyzed theoretically and simulated. The stability of wind turbine speed characteristics in the situation of both small perturbations and persistent disturbances is analyzed. For small perturbations, the effects of inertia time constant, amplitude of perturbation, wind speed on the stability are studied. For persistent disturbances, the effects of the frequency and the amplitude of wind variation on the stability are analyzed. At last, the design principle of inertia time constant is proposed.
